Gnumed.business.gmMedication API documentation
Description: Medication handling code …

# Module `Gnumed.business.gmMedication`

Medication handling code.

license: GPL v2 or later

intake regimen:

        beim Aufstehen / Frühstück / Mittag / abends / zum Schlafengehen

        "19 Uhr"

        "Mittwochs"                     (Alendronsäure)

        "1x/Monat"                      (Alendronsäure)

        "Mo Di Mi Do Fr Sa So" (Falithrom)

        "Tag 1: 4, Tag 2: 3, Tag 3: 2, Tag 4: 1"        (Prednisonstoß)

        "1T:4, 1T:3, 2T:2, 3T:1, 4T:1/2"                        (Prednisonstoß)

        "bei Bedarf"

Expand source code

    # -*- coding: utf-8 -*-
    """Medication handling code.

    license: GPL v2 or later

    intake regimen:

            beim Aufstehen / Frühstück / Mittag / abends / zum Schlafengehen

            "19 Uhr"

            "Mittwochs"                     (Alendronsäure)

            "1x/Monat"                      (Alendronsäure)

            "Mo Di Mi Do Fr Sa So" (Falithrom)

            "Tag 1: 4, Tag 2: 3, Tag 3: 2, Tag 4: 1"        (Prednisonstoß)

            "1T:4, 1T:3, 2T:2, 3T:1, 4T:1/2"                        (Prednisonstoß)

            "bei Bedarf"
    """
    #============================================================
    __author__ = "K.Hilbert <Karsten.Hilbert@gmx.net>"

    import sys
    import logging
    import io
    import uuid
    import re as regex
    import datetime as pydt

    if __name__ == '__main__':
            sys.path.insert(0, '../../')
            _ = lambda x:x  # make pyflakes happy
            from Gnumed.pycommon import gmI18N
            gmI18N.activate_locale()
            gmI18N.install_domain('gnumed')
    from Gnumed.pycommon import gmBusinessDBObject
    from Gnumed.pycommon import gmTools
    from Gnumed.pycommon import gmPG2
    from Gnumed.pycommon import gmDispatcher
    from Gnumed.pycommon import gmMatchProvider
    from Gnumed.pycommon import gmHooks
    from Gnumed.pycommon import gmDateTime

    from Gnumed.business import gmATC
    from Gnumed.business import gmAllergy
    from Gnumed.business import gmEMRStructItems

    _log = logging.getLogger('gm.meds')

    #============================================================
    DEFAULT_MEDICATION_HISTORY_EPISODE = _('Medication history')

    URL_renal_insufficiency = 'https://www.dosing.de/nierebck.php'
    URL_renal_insufficiency_search_template = 'https://www.google.com/search?q=site:dosing.de+%s'

    URL_long_qt = 'https://www.crediblemeds.org'

    # http://www.akdae.de/Arzneimittelsicherheit/UAW-Meldung/UAW-Meldung-online.html
    # https://dcgma.org/uaw/meldung.php
    URL_drug_adr_german_default = 'https://nebenwirkungen.pei.de'

    (
            USE_TYPE_MEDICATION,
            USE_TYPE_NON_HARMFUL,
            USE_TYPE_PRESENTLY_HARMFUL,
            USE_TYPE_PRESENTLY_ADDICTED, USE_TYPE_PREVIOUSLY_ADDICTED
    ) = (
            None, 0, 1, 2, 3
    )

    USE_TYPES_ACTIVE_MISUSE = [
            USE_TYPE_PRESENTLY_HARMFUL,
            USE_TYPE_PRESENTLY_ADDICTED
    ]

    #============================================================
    def _on_substance_intake_modified():
            """Always relates to the active patient."""
            gmHooks.run_hook_script(hook = 'after_substance_intake_modified')

    gmDispatcher.connect(_on_substance_intake_modified, 'clin.intake_mod_db')

    #============================================================
    def drug2renal_insufficiency_url(search_term=None):

            if search_term is None:
                    return URL_renal_insufficiency

            if isinstance(search_term, str):
                    if search_term.strip() == '':
                            return URL_renal_insufficiency

            terms = []
            names = []

            if isinstance(search_term, cDrugProduct):
                    if search_term['atc'] is not None:
                            terms.append(search_term['atc'])

            elif isinstance(search_term, cSubstanceIntakeEntry):
                    names.append(search_term['substance'])
                    if search_term['atc_drug'] is not None:
                            terms.append(search_term['atc_drug'])
                    if search_term['atc_substance'] is not None:
                            terms.append(search_term['atc_substance'])

            elif isinstance(search_term, cDrugComponent):
                    names.append(search_term['substance'])
                    if search_term['atc_drug'] is not None:
                            terms.append(search_term['atc_drug'])
                    if search_term['atc_substance'] is not None:
                            terms.append(search_term['atc_substance'])

            elif isinstance(search_term, cSubstance):
                    names.append(search_term['substance'])
                    if search_term['atc'] is not None:
                            terms.append(search_term['atc'])

            elif isinstance(search_term, cSubstanceDose):
                    names.append(search_term['substance'])
                    if search_term['atc'] is not None:
                            terms.append(search_term['atc_substance'])

            elif search_term is not None:
                    names.append('%s' % search_term)
                    terms.extend(gmATC.text2atc(text = '%s' % search_term, fuzzy = True))

            for name in names:
                    if name.endswith('e'):
                            terms.append(name[:-1])
                    else:
                            terms.append(name)

            url = URL_renal_insufficiency_search_template % '+OR+'.join(terms)

            _log.debug('renal insufficiency URL: %s', url)

            return url

    #============================================================
    #============================================================
    # plain substances
    #------------------------------------------------------------
    _SQL_get_substance = "SELECT * FROM ref.v_substances WHERE %s"

    class cSubstance(gmBusinessDBObject.cBusinessDBObject):

            _cmd_fetch_payload = _SQL_get_substance % "pk_substance = %s"
            _cmds_store_payload = [
                    """UPDATE ref.substance SET
                                    description = %(substance)s,
                                    atc = gm.nullify_empty_string(%(atc)s),
                                    intake_instructions = gm.nullify_empty_string(%(intake_instructions)s)
                            WHERE
                                    pk = %(pk_substance)s
                                            AND
                                    xmin = %(xmin_substance)s
                            RETURNING
                                    xmin AS xmin_substance
                    """
            ]
            _updatable_fields = [
                    'substance',
                    'atc',
                    'intake_instructions'
            ]
            #--------------------------------------------------------
            def format(self, left_margin=0):
                    if len(self._payload[self._idx['loincs']]) == 0:
                            loincs = ''
                    else:
                            loincs = """
    %s %s
    %s  %s"""       % (
                                    (' ' * left_margin),
                                    _('LOINCs to monitor:'),
                                    (' ' * left_margin),
                                    ('\n' + (' ' * (left_margin + 1))).join ([
                                            '%s%s%s' % (
                                                    l['loinc'],
                                                    gmTools.coalesce(l['max_age_str'], '', ': ' + _('once within %s')),
                                                    gmTools.coalesce(l['comment'], '', ' (%s)')
                                            ) for l in self._payload[self._idx['loincs']]
                                    ])
                            )
                    return (' ' * left_margin) + '%s: %s%s%s%s' % (
                            _('Substance'),
                            self._payload[self._idx['substance']],
                            gmTools.coalesce(self._payload[self._idx['atc']], '', ' [%s]'),
                            gmTools.coalesce(self._payload[self._idx['intake_instructions']], '', _('\n Instructions: %s')),
                            loincs
                    )

            #--------------------------------------------------------
            def save_payload(self, conn=None):
                    success, data = super().save_payload(conn = conn)
                    if not success:
                            return (success, data)

                    if self._payload[self._idx['atc']] is not None:
                            atc = self._payload[self._idx['atc']].strip()
                            if atc != '':
                                    gmATC.propagate_atc (
                                            substance = self._payload[self._idx['substance']].strip(),
                                            atc = atc
                                    )
                    return (success, data)

            #--------------------------------------------------------
            def exists_as_intake(self, pk_patient=None):
                    return substance_intake_exists (
                            pk_substance = self.pk_obj,
                            pk_identity = pk_patient
                    )

            #--------------------------------------------------------
            # properties
            #--------------------------------------------------------
            def _set_loincs(self, loincs):
                    args = {'pk_subst': self.pk_obj, 'loincs': loincs}
                    # insert new entries
                    for loinc in loincs:
                            cmd = """INSERT INTO ref.lnk_loinc2substance (fk_substance, loinc)
                            SELECT
                                    %(pk_subst)s, %(loinc)s
                            WHERE NOT EXISTS (
                                    SELECT 1 from ref.lnk_loinc2substance WHERE fk_substance = %(pk_subst)s AND loinc = %(loinc)s
                            )"""
                            args['loinc'] = loinc
                            gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': args}])

                    # delete old entries
                    cmd = 'DELETE FROM ref.lnk_loinc2substance WHERE fk_substance = %(pk_subst)s AND loinc <> ALL(%(loincs)s)'
                    gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': args}])

            loincs = property(lambda x:x, _set_loincs)

            #--------------------------------------------------------
            def _get_is_in_use_by_patients(self):
                    cmd = """
                            SELECT EXISTS (
                                    SELECT 1
                                    FROM clin.v_intakes
                                    WHERE pk_substance = %(pk)s
                                    LIMIT 1
                            )"""
                    args = {'pk': self.pk_obj}

                    rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = False)
                    return rows[0][0]

            is_in_use_by_patients = property(_get_is_in_use_by_patients)

            #--------------------------------------------------------
            def _get_is_drug_component(self):
                    cmd = """
                            SELECT EXISTS (
                                    SELECT 1
                                    FROM ref.v_drug_components
                                    WHERE pk_substance = %(pk)s
                                    LIMIT 1
                            )"""
                    args = {'pk': self.pk_obj}

                    rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = False)
                    return rows[0][0]

            is_drug_component = property(_get_is_drug_component)

    #------------------------------------------------------------
    def get_substances(order_by=None, return_pks=False):
            if order_by is None:
                    order_by = 'true'
            else:
                    order_by = 'true ORDER BY %s' % order_by
            cmd = _SQL_get_substance % order_by
            rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd}], get_col_idx = True)
            if return_pks:
                    return [ r['pk_substance'] for r in rows ]
            return [ cSubstance(row = {'data': r, 'idx': idx, 'pk_field': 'pk_substance'}) for r in rows ]

    #------------------------------------------------------------
    def create_substance(link_obj=None, substance=None, atc=None):
            if atc is not None:
                    atc = atc.strip()

            args = {
                    'desc': substance.strip(),
                    'atc': atc
            }
            cmd = "SELECT pk FROM ref.substance WHERE lower(description) = lower(%(desc)s)"
            rows, idx = gmPG2.run_ro_queries(link_obj = link_obj, queries = [{'cmd': cmd, 'args': args}])

            if len(rows) == 0:
                    cmd = """
                            INSERT INTO ref.substance (description, atc) VALUES (
                                    %(desc)s,
                                    coalesce (
                                            gm.nullify_empty_string(%(atc)s),
                                            (SELECT code FROM ref.atc WHERE term = %(desc)s LIMIT 1)
                                    )
                            ) RETURNING pk"""
                    rows, idx = gmPG2.run_rw_queries(link_obj = link_obj, queries = [{'cmd': cmd, 'args': args}], return_data = True, get_col_idx = False)

            if atc is not None:
                    gmATC.propagate_atc(link_obj = link_obj, substance = substance.strip(), atc = atc)

            return cSubstance(aPK_obj = rows[0]['pk'], link_obj = link_obj)

    #------------------------------------------------------------
    def create_substance_by_atc(substance=None, atc=None, link_obj=None):

            if atc is None:
                    raise ValueError('<atc> must be supplied')
            atc = atc.strip()
            if atc == '':
                    raise ValueError('<atc> cannot be empty: [%s]', atc)

            queries = []
            args = {
                    'desc': substance.strip(),
                    'atc': atc
            }
            # in case the substance already exists: add ATC
            cmd = "UPDATE ref.substance SET atc = %(atc)s WHERE lower(description) = lower(%(desc)s) AND atc IS NULL"
            queries.append({'cmd': cmd, 'args': args})
            # or else INSERT the substance
            cmd = """
                    INSERT INTO ref.substance (description, atc)
                            SELECT
                                    %(desc)s,
                                    %(atc)s
                            WHERE NOT EXISTS (
                                    SELECT 1 FROM ref.substance WHERE atc = %(atc)s
                            )
                    RETURNING pk"""
            queries.append({'cmd': cmd, 'args': args})
            rows, idx = gmPG2.run_rw_queries(link_obj = link_obj, queries = queries, return_data = True, get_col_idx = False)
            if len(rows) == 0:
                    cmd = "SELECT pk FROM ref.substance WHERE atc = %(atc)s LIMIT 1"
                    rows, idx = gmPG2.run_ro_queries(link_obj = link_obj, queries = [{'cmd': cmd, 'args': args}])

            return cSubstance(aPK_obj = rows[0]['pk'], link_obj = link_obj)

    #------------------------------------------------------------
    def delete_substance(pk_substance=None):
            args = {'pk': pk_substance}
            cmd = """
                    DELETE FROM ref.substance WHERE
                            pk = %(pk)s
                                    AND
                            -- must not currently be used with a patient
                            NOT EXISTS (
                                    SELECT 1 FROM clin.v_intakes
                                    WHERE pk_substance = %(pk)s
                                    LIMIT 1
                            )
                                    AND
                            -- must not currently have doses defined for it
                            NOT EXISTS (
                                    SELECT 1 FROM ref.dose
                                    WHERE fk_substance = %(pk)s
                                    LIMIT 1
                            )
            """
            gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': args}])
            return True

    #============================================================
    # substance doses
    #------------------------------------------------------------
    _SQL_get_substance_dose = "SELECT * FROM ref.v_substance_doses WHERE %s"

    class cSubstanceDose(gmBusinessDBObject.cBusinessDBObject):

            _cmd_fetch_payload = _SQL_get_substance_dose % "pk_dose = %s"
            _cmds_store_payload = [
                    """UPDATE ref.dose SET
                                    amount = %(amount)s,
                                    unit = %(unit)s,
                                    dose_unit = gm.nullify_empty_string(%(dose_unit)s)
                            WHERE
                                    pk = %(pk_dose)s
                                            AND
                                    xmin = %(xmin_dose)s
                            RETURNING
                                    xmin as xmin_dose,
                                    pk as pk_dose
                    """
            ]
            _updatable_fields = [
                    'amount',
                    'unit',
                    'dose_unit'
            ]

            #--------------------------------------------------------
            def format(self, left_margin=0, include_loincs=False):
                    loincs = ''
                    if include_loincs and (len(self._payload[self._idx['loincs']]) > 0):
                            loincs = """
    %s %s
    %s  %s"""       % (
                                    (' ' * left_margin),
                                    _('LOINCs to monitor:'),
                                    (' ' * left_margin),
                                    ('\n' + (' ' * (left_margin + 1))).join ([
                                            '%s%s%s' % (
                                                    l['loinc'],
                                                    gmTools.coalesce(l['max_age_str'], '', ': ' + _('once within %s')),
                                                    gmTools.coalesce(l['comment'], '', ' (%s)')
                                            ) for l in self._payload[self._idx['loincs']]
                                    ])
                            )
                    return (' ' * left_margin) + '%s: %s %s%s%s%s%s' % (
                            _('Substance dose'),
                            self._payload[self._idx['substance']],
                            self._payload[self._idx['amount']],
                            self.formatted_units,
                            gmTools.coalesce(self._payload[self._idx['atc_substance']], '', ' [%s]'),
                            gmTools.coalesce(self._payload[self._idx['intake_instructions']], '', '\n' + (' ' * left_margin) + ' ' + _('Instructions: %s')),
                            loincs
                    )

            #--------------------------------------------------------
            def exists_as_intake(self, pk_patient=None):
                    return substance_intake_exists (
                            pk_dose = self.pk_obj,
                            pk_identity = pk_patient
                    )

            #--------------------------------------------------------
            # properties
            #--------------------------------------------------------
            def _get_is_in_use_by_patients(self):
                    cmd = """
                            SELECT EXISTS (
                                    SELECT 1
                                    FROM clin.v_intakes
                                    WHERE pk_dose = %(pk)s
                                    LIMIT 1
                            )"""
                    args = {'pk': self.pk_obj}

                    rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = False)
                    return rows[0][0]

            is_in_use_by_patients = property(_get_is_in_use_by_patients)

            #--------------------------------------------------------
            def _get_is_drug_component(self):
                    cmd = """
                            SELECT EXISTS (
                                    SELECT 1
                                    FROM ref.v_drug_components
                                    WHERE pk_dose = %(pk)s
                                    LIMIT 1
                            )"""
                    args = {'pk': self.pk_obj}
                    rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = False)
                    return rows[0][0]

            is_drug_component = property(_get_is_drug_component)

            #--------------------------------------------------------
            def _get_formatted_units(self, short=True):
                    return format_units (
                            self._payload[self._idx['unit']],
                            gmTools.coalesce(self._payload[self._idx['dose_unit']], _('delivery unit')),
                            short = short
                    )

            formatted_units = property(_get_formatted_units)

    #------------------------------------------------------------
    def get_substance_doses(order_by=None, return_pks=False):
            if order_by is None:
                    order_by = 'true'
            else:
                    order_by = 'true ORDER BY %s' % order_by
            cmd = _SQL_get_substance_dose % order_by
            rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd}], get_col_idx = True)
            if return_pks:
                    return [ r['pk_dose'] for r in rows ]
            return [ cSubstanceDose(row = {'data': r, 'idx': idx, 'pk_field': 'pk_dose'}) for r in rows ]

    #------------------------------------------------------------
    def create_substance_dose(link_obj=None, pk_substance=None, substance=None, atc=None, amount=None, unit=None, dose_unit=None):

            if [pk_substance, substance].count(None) != 1:
                    raise ValueError('exctly one of <pk_substance> and <substance> must be None')

            converted, amount = gmTools.input2decimal(amount)
            if not converted:
                    raise ValueError('<amount> must be a number: %s (is: %s)', amount, type(amount))

            if pk_substance is None:
                    pk_substance = create_substance(link_obj = link_obj, substance = substance, atc = atc)['pk_substance']

            args = {
                    'pk_subst': pk_substance,
                    'amount': amount,
                    'unit': unit.strip(),
                    'dose_unit': dose_unit
            }
            cmd = """
                    SELECT pk FROM ref.dose
                    WHERE
                            fk_substance = %(pk_subst)s
                                    AND
                            amount = %(amount)s
                                    AND
                            unit = %(unit)s
                                    AND
                            dose_unit IS NOT DISTINCT FROM gm.nullify_empty_string(%(dose_unit)s)
                    """
            rows, idx = gmPG2.run_ro_queries(link_obj = link_obj, queries = [{'cmd': cmd, 'args': args}])

            if len(rows) == 0:
                    cmd = """
                            INSERT INTO ref.dose (fk_substance, amount, unit, dose_unit) VALUES (
                                    %(pk_subst)s,
                                    %(amount)s,
                                    gm.nullify_empty_string(%(unit)s),
                                    gm.nullify_empty_string(%(dose_unit)s)
                            ) RETURNING pk"""
                    rows, idx = gmPG2.run_rw_queries(link_obj = link_obj, queries = [{'cmd': cmd, 'args': args}], return_data = True, get_col_idx = False)

            return cSubstanceDose(aPK_obj = rows[0]['pk'], link_obj = link_obj)

    #------------------------------------------------------------
    def create_substance_dose_by_atc(link_obj=None, substance=None, atc=None, amount=None, unit=None, dose_unit=None):
            subst = create_substance_by_atc (
                    link_obj = link_obj,
                    substance = substance,
                    atc = atc
            )
            return create_substance_dose (
                    link_obj = link_obj,
                    pk_substance = subst['pk_substance'],
                    amount = amount,
                    unit = unit,
                    dose_unit = dose_unit
            )

    #------------------------------------------------------------
    def delete_substance_dose(pk_dose=None):
            args = {'pk_dose': pk_dose}
            cmd = """
                    DELETE FROM ref.dose WHERE
                            pk = %(pk_dose)s
                                    AND
                            -- must not currently be used with a patient
                            NOT EXISTS (
                                    SELECT 1 FROM clin.v_intakes
                                    WHERE pk_dose = %(pk_dose)s
                                    LIMIT 1
                            )
                                    AND
                            -- must not currently be linked to a drug
                            NOT EXISTS (
                                    SELECT 1 FROM ref.lnk_dose2drug
                                    WHERE fk_dose = %(pk_dose)s
                                    LIMIT 1
                            )
            """
            gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': args}])
            return True

    #------------------------------------------------------------
    class cSubstanceDoseMatchProvider(gmMatchProvider.cMatchProvider_SQL2):

            _pattern = regex.compile(r'^\D+\s*\d+$', regex.UNICODE)

            # the "normal query" is run when the search fragment
            # does NOT match the regex ._pattern (which is: "chars SPACE digits")
            _normal_query = """
                    SELECT
                            r_vsd.pk_dose
                                    AS data,
                            (r_vsd.substance || ' ' || r_vsd.amount || ' ' || r_vsd.unit || coalesce(' / ' r_vsd.dose_unit ||, ''))
                                    AS field_label,
                            (r_vsd.substance || ' ' || r_vsd.amount || ' ' || r_vsd.unit || coalesce(' / ' r_vsd.dose_unit ||, ''))
                                    AS list_label
                    FROM
                            ref.v_substance_doses r_vsd
                    WHERE
                            r_vsd.substance %%(fragment_condition)s
                    ORDER BY
                            list_label
                    LIMIT 50"""

            # the "regex query" is run when the search fragment
            # DOES match the regex ._pattern (which is: "chars SPACE digits")
            _regex_query =  """
                    SELECT
                            r_vsd.pk_dose
                                    AS data,
                            (r_vsd.substance || ' ' || r_vsd.amount || ' ' || r_vsd.unit || coalesce(' / ' r_vsd.dose_unit ||, ''))
                                    AS field_label,
                            (r_vsd.substance || ' ' || r_vsd.amount || ' ' || r_vsd.unit || coalesce(' / ' r_vsd.dose_unit ||, ''))
                                    AS list_label
                    FROM
                            ref.v_substance_doses r_vsd
                    WHERE
                            %%(fragment_condition)s
                    ORDER BY
                            list_label
                    LIMIT 50"""

            #--------------------------------------------------------
            def getMatchesByPhrase(self, aFragment):
                    """Return matches for aFragment at start of phrases."""

                    if cSubstanceDoseMatchProvider._pattern.match(aFragment):
                            self._queries = [cSubstanceDoseMatchProvider._regex_query]
                            fragment_condition = """substance ILIKE %(subst)s
                                    AND
                            amount::text ILIKE %(amount)s"""
                            self._args['subst'] = '%s%%' % regex.sub(r'\s*\d+$', '', aFragment)
                            self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                    else:
                            self._queries = [cSubstanceDoseMatchProvider._normal_query]
                            fragment_condition = "ILIKE %(fragment)s"
                            self._args['fragment'] = "%s%%" % aFragment

                    return self._find_matches(fragment_condition)

            #--------------------------------------------------------
            def getMatchesByWord(self, aFragment):
                    """Return matches for aFragment at start of words inside phrases."""

                    if cSubstanceDoseMatchProvider._pattern.match(aFragment):
                            self._queries = [cSubstanceDoseMatchProvider._regex_query]

                            subst = regex.sub(r'\s*\d+$', '', aFragment)
                            subst = gmPG2.sanitize_pg_regex(expression = subst, escape_all = False)

                            fragment_condition = """substance ~* %(subst)s
                                    AND
                            amount::text ILIKE %(amount)s"""

                            self._args['subst'] = "( %s)|(^%s)" % (subst, subst)
                            self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                    else:
                            self._queries = [cSubstanceDoseMatchProvider._normal_query]
                            fragment_condition = "~* %(fragment)s"
                            aFragment = gmPG2.sanitize_pg_regex(expression = aFragment, escape_all = False)
                            self._args['fragment'] = "( %s)|(^%s)" % (aFragment, aFragment)

                    return self._find_matches(fragment_condition)

            #--------------------------------------------------------
            def getMatchesBySubstr(self, aFragment):
                    """Return matches for aFragment as a true substring."""

                    if cSubstanceDoseMatchProvider._pattern.match(aFragment):
                            self._queries = [cSubstanceDoseMatchProvider._regex_query]
                            fragment_condition = """substance ILIKE %(subst)s
                                    AND
                            amount::text ILIKE %(amount)s"""
                            self._args['subst'] = '%%%s%%' % regex.sub(r'\s*\d+$', '', aFragment)
                            self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                    else:
                            self._queries = [cSubstanceDoseMatchProvider._normal_query]
                            fragment_condition = "ILIKE %(fragment)s"
                            self._args['fragment'] = "%%%s%%" % aFragment

                    return self._find_matches(fragment_condition)

    #------------------------------------------------------------
    #------------------------------------------------------------
    class cProductOrSubstanceMatchProvider(gmMatchProvider.cMatchProvider_SQL2):

            # by product name
            _query_drug_product_by_name = """
                    SELECT
                            ARRAY[1, pk]::INTEGER[]
                                    AS data,
                            (description || ' (' || preparation || ')' || coalesce(' [' || atc_code || ']', ''))
                                    AS list_label,
                            (description || ' (' || preparation || ')' || coalesce(' [' || atc_code || ']', ''))
                                    AS field_label,
                            1 AS rank
                    FROM ref.drug_product
                    WHERE description %(fragment_condition)s
                    LIMIT 50
            """
            _query_drug_product_by_name_and_strength = """
                    SELECT
                            ARRAY[1, pk_drug_product]::INTEGER[]
                                    AS data,
                            (product || ' (' || preparation || ' %s ' || amount || unit || coalesce('/' || dose_unit, '') || ' ' || substance || ')' || coalesce(' [' || atc_drug || ']', ''))
                                    AS list_label,
                            (product || ' (' || preparation || ' %s ' || amount || unit || coalesce('/' || dose_unit, '') || ' ' || substance || ')' || coalesce(' [' || atc_drug || ']', ''))
                                    AS field_label,
                            1 AS rank
                    FROM
                            (SELECT *, product AS description FROM ref.v_drug_components) AS _components
                    WHERE %%(fragment_condition)s
                    LIMIT 50
            """ % (
                    _('w/'),
                    _('w/')
            )

            # by component
    #       _query_component_by_name = u"""
    #               SELECT
    #                       ARRAY[3, r_vdc1.pk_component]::INTEGER[]
    #                               AS data,
    #                       (r_vdc1.substance || ' ' || r_vdc1.amount || r_vdc1.unit || ' ' || r_vdc1.preparation || ' ('
    #                               || r_vdc1.product || ' ['
    #                                       || (
    #                                               SELECT array_to_string(array_agg(r_vdc2.amount), ' / ')
    #                                               FROM ref.v_drug_components r_vdc2
    #                                               WHERE r_vdc2.pk_drug_product = r_vdc1.pk_drug_product
    #                                       )
    #                               || ']'
    #                       || ')'
    #                       )       AS field_label,
    #                       (r_vdc1.substance || ' ' || r_vdc1.amount || r_vdc1.unit || ' ' || r_vdc1.preparation || ' ('
    #                               || r_vdc1.product || ' ['
    #                                       || (
    #                                               SELECT array_to_string(array_agg(r_vdc2.amount), ' / ')
    #                                               FROM ref.v_drug_components r_vdc2
    #                                               WHERE r_vdc2.pk_drug_product = r_vdc1.pk_drug_product
    #                                       )
    #                               || ']'
    #                       || ')'
    #                       )       AS list_label,
    #                       1 AS rank
    #               FROM
    #                       (SELECT *, product AS description FROM ref.v_drug_components) AS r_vdc1
    #               WHERE
    #                       r_vdc1.substance %(fragment_condition)s
    #               LIMIT 50"""

    #       _query_component_by_name_and_strength = u"""
    #               SELECT
    #                       ARRAY[3, r_vdc1.pk_component]::INTEGER[]
    #                               AS data,
    #                       (r_vdc1.substance || ' ' || r_vdc1.amount || r_vdc1.unit || ' ' || r_vdc1.preparation || ' ('
    #                               || r_vdc1.product || ' ['
    #                                       || (
    #                                               SELECT array_to_string(array_agg(r_vdc2.amount), ' / ')
    #                                               FROM ref.v_drug_components r_vdc2
    #                                               WHERE r_vdc2.pk_drug_product = r_vdc1.pk_drug_product
    #                                       )
    #                               || ']'
    #                       || ')'
    #                       )       AS field_label,
    #                       (r_vdc1.substance || ' ' || r_vdc1.amount || r_vdc1.unit || ' ' || r_vdc1.preparation || ' ('
    #                               || r_vdc1.product || ' ['
    #                                       || (
    #                                               SELECT array_to_string(array_agg(r_vdc2.amount), ' / ')
    #                                               FROM ref.v_drug_components r_vdc2
    #                                               WHERE r_vdc2.pk_drug_product = r_vdc1.pk_drug_product
    #                                       )
    #                               || ']'
    #                       || ')'
    #                       )       AS list_label,
    #                       1 AS rank
    #               FROM (SELECT *, substance AS description FROM ref.v_drug_components) AS r_vdc1
    #               WHERE
    #                       %(fragment_condition)s
    #               ORDER BY list_label
    #               LIMIT 50"""

            # by substance name in doses
            _query_substance_by_name = """
                    SELECT
                            data,
                            field_label,
                            list_label,
                            rank
                    FROM ((
                            -- first: substance intakes which match, because we tend to reuse them often
                            SELECT
                                    ARRAY[2, pk_substance]::INTEGER[] AS data,
                                    (description || ' ' || amount || unit || coalesce('/' || dose_unit, '')) AS field_label,
                                    (description || ' ' || amount || unit || coalesce('/' || dose_unit, '') || ' (%s)') AS list_label,
                                    1 AS rank
                            FROM (
                                    SELECT DISTINCT ON (description, amount, unit, dose_unit)
                                            pk_substance,
                                            substance AS description,
                                            amount,
                                            unit,
                                            dose_unit
                                    FROM clin.v_intakes
                            ) AS normalized_intakes
                            WHERE description %%(fragment_condition)s

                    ) UNION ALL (
    xxxxxxxxxxxxxxxxxxxxxxxxxxxx
                            -- second: consumable substances which match but are not intakes
                            SELECT
                                    ARRAY[2, pk]::INTEGER[] AS data,
                                    (description || ' ' || amount || ' ' || unit) AS field_label,
                                    (description || ' ' || amount || ' ' || unit) AS list_label,
                                    2 AS rank
                            FROM ref.consumable_substance
                            WHERE
                                    description %%(fragment_condition)s
                                            AND
                                    pk NOT IN (
                                            SELECT fk_substance
                                            FROM clin.substance_intake
                                            WHERE fk_substance IS NOT NULL
                                    )
                    )) AS candidates
                    --ORDER BY rank, list_label
                    LIMIT 50""" % _('in use')

            _query_substance_by_name_and_strength =         """
                    SELECT
                            data,
                            field_label,
                            list_label,
                            rank
                    FROM ((
                            SELECT
                                    ARRAY[2, pk_substance]::INTEGER[] AS data,
                                    (description || ' ' || amount || ' ' || unit) AS field_label,
                                    (description || ' ' || amount || ' ' || unit || ' (%s)') AS list_label,
                                    1 AS rank
                            FROM (
                                    SELECT DISTINCT ON (description, amount, unit)
                                            pk_substance,
                                            substance AS description,
                                            amount,
                                            unit
                                    FROM clin.v_nonbraXXXnd_intakes
                            ) AS normalized_intakes
                            WHERE
                                    %%(fragment_condition)s

                    ) UNION ALL (

                            -- matching substances which are not in intakes
                            SELECT
                                    ARRAY[2, pk]::INTEGER[] AS data,
                                    (description || ' ' || amount || ' ' || unit) AS field_label,
                                    (description || ' ' || amount || ' ' || unit) AS list_label,
                                    2 AS rank
                            FROM ref.consumable_substance
                            WHERE
                                    %%(fragment_condition)s
                                            AND
                                    pk NOT IN (
                                            SELECT fk_substance
                                            FROM clin.substance_intake
                                            WHERE fk_substance IS NOT NULL
                                    )
                    )) AS candidates
                    --ORDER BY rank, list_label
                    LIMIT 50""" % _('in use')

            _pattern = regex.compile(r'^\D+\s*\d+$', regex.UNICODE)

            _master_query = """
                    SELECT
                            data, field_label, list_label, rank
                    FROM ((%s) UNION (%s) UNION (%s))
                            AS _union
                    ORDER BY rank, list_label
                    LIMIT 50
            """
            #--------------------------------------------------------
            def getMatchesByPhrase(self, aFragment):
                    """Return matches for aFragment at start of phrases."""

                    if cProductOrSubstanceMatchProvider._pattern.match(aFragment):
                            self._queries = [
                                    cProductOrSubstanceMatchProvider._master_query % (
                                            cProductOrSubstanceMatchProvider._query_drug_product_by_name_and_strength,
                                            cProductOrSubstanceMatchProvider._query_substance_by_name_and_strength,
                                            cProductOrSubstanceMatchProvider._query_component_by_name_and_strength
                                    )
                            ]
                            #self._queries = [cProductOrSubstanceMatchProvider._query_substance_by_name_and_strength]
                            fragment_condition = """description ILIKE %(desc)s
                                    AND
                            amount::text ILIKE %(amount)s"""
                            self._args['desc'] = '%s%%' % regex.sub(r'\s*\d+$', '', aFragment)
                            self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                    else:
                            self._queries = [
                                    cProductOrSubstanceMatchProvider._master_query % (
                                            cProductOrSubstanceMatchProvider._query_drug_product_by_name,
                                            cProductOrSubstanceMatchProvider._query_substance_by_name,
                                            cProductOrSubstanceMatchProvider._query_component_by_name
                                    )
                            ]
                            #self._queries = [cProductOrSubstanceMatchProvider._query_substance_by_name]
                            fragment_condition = "ILIKE %(fragment)s"
                            self._args['fragment'] = "%s%%" % aFragment

                    return self._find_matches(fragment_condition)

            #--------------------------------------------------------
            def getMatchesByWord(self, aFragment):
                    """Return matches for aFragment at start of words inside phrases."""

                    if cProductOrSubstanceMatchProvider._pattern.match(aFragment):
                            self._queries = [
                                    cProductOrSubstanceMatchProvider._master_query % (
                                            cProductOrSubstanceMatchProvider._query_drug_product_by_name_and_strength,
                                            cProductOrSubstanceMatchProvider._query_substance_by_name_and_strength,
                                            cProductOrSubstanceMatchProvider._query_component_by_name_and_strength
                                    )
                            ]
                            #self._queries = [cProductOrSubstanceMatchProvider._query_substance_by_name_and_strength]

                            desc = regex.sub(r'\s*\d+$', '', aFragment)
                            desc = gmPG2.sanitize_pg_regex(expression = desc, escape_all = False)

                            fragment_condition = """description ~* %(desc)s
                                    AND
                            amount::text ILIKE %(amount)s"""

                            self._args['desc'] = "( %s)|(^%s)" % (desc, desc)
                            self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                    else:
                            self._queries = [
                                    cProductOrSubstanceMatchProvider._master_query % (
                                            cProductOrSubstanceMatchProvider._query_drug_product_by_name,
                                            cProductOrSubstanceMatchProvider._query_substance_by_name,
                                            cProductOrSubstanceMatchProvider._query_component_by_name
                                    )
                            ]
                            #self._queries = [cProductOrSubstanceMatchProvider._query_substance_by_name]
                            fragment_condition = "~* %(fragment)s"
                            aFragment = gmPG2.sanitize_pg_regex(expression = aFragment, escape_all = False)
                            self._args['fragment'] = "( %s)|(^%s)" % (aFragment, aFragment)

                    return self._find_matches(fragment_condition)

            #--------------------------------------------------------
            def getMatchesBySubstr(self, aFragment):
                    """Return matches for aFragment as a true substring."""

                    if cProductOrSubstanceMatchProvider._pattern.match(aFragment):
                            self._queries = [
                                    cProductOrSubstanceMatchProvider._master_query % (
                                            cProductOrSubstanceMatchProvider._query_drug_product_by_name_and_strength,
                                            cProductOrSubstanceMatchProvider._query_substance_by_name_and_strength,
                                            cProductOrSubstanceMatchProvider._query_component_by_name_and_strength
                                    )
                            ]
                            #self._queries = [cProductOrSubstanceMatchProvider._query_substance_by_name_and_strength]
                            fragment_condition = """description ILIKE %(desc)s
                                    AND
                            amount::text ILIKE %(amount)s"""
                            self._args['desc'] = '%%%s%%' % regex.sub(r'\s*\d+$', '', aFragment)
                            self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                    else:
                            self._queries = [
                                    cProductOrSubstanceMatchProvider._master_query % (
                                            cProductOrSubstanceMatchProvider._query_drug_product_by_name,
                                            cProductOrSubstanceMatchProvider._query_substance_by_name,
                                            cProductOrSubstanceMatchProvider._query_component_by_name
                                    )
                            ]
                            #self._queries = [cProductOrSubstanceMatchProvider._query_substance_by_name]
                            fragment_condition = "ILIKE %(fragment)s"
                            self._args['fragment'] = "%%%s%%" % aFragment

                    return self._find_matches(fragment_condition)

    #------------------------------------------------------------
    class cSubstanceIntakeObjectMatchProvider(gmMatchProvider.cMatchProvider_SQL2):

            # (product name) -> product
            _SQL_drug_product_by_name = """
                    SELECT
                            pk_drug_product
                                    AS data,
                            (product || ' (' || preparation || ')' || coalesce(' [' || atc || ']', ''))
                                    AS list_label,
                            (product || ' (' || preparation || ')' || coalesce(' [' || atc || ']', ''))
                                    AS field_label
                    FROM ref.v_drug_products
                    WHERE
                            is_vaccine IS FALSE
                                    AND
                            product %(fragment_condition)s
                    LIMIT 50
            """
            # (component name) -> product
            _SQL_drug_product_by_component_name = """
                    SELECT
                            pk_drug_product
                                    AS data,
                            (product || ' (' || preparation || ' %s ' || amount || unit || coalesce('/' || dose_unit, '') || ' ' || substance || ')' || coalesce(' [' || atc_drug || ']', ''))
                                    AS list_label,
                            (product || ' (' || preparation || ' %s ' || amount || unit || coalesce('/' || dose_unit, '') || ' ' || substance || ')' || coalesce(' [' || atc_drug || ']', ''))
                                    AS field_label
                    FROM
                            ref.v_drug_components
                    WHERE substance %%(fragment_condition)s
                    LIMIT 50
            """ % (
                    _('w/'),
                    _('w/')
            )
            # (product name + component strength) -> product
            _SQL_drug_product_by_name_and_strength = """
                    SELECT
                            pk_drug_product
                                    AS data,
                            (product || ' (' || preparation || ' %s ' || amount || unit || coalesce('/' || dose_unit, '') || ' ' || substance || ')' || coalesce(' [' || atc_drug || ']', ''))
                                    AS list_label,
                            (product || ' (' || preparation || ' %s ' || amount || unit || coalesce('/' || dose_unit, '') || ' ' || substance || ')' || coalesce(' [' || atc_drug || ']', ''))
                                    AS field_label
                    FROM
                            (SELECT *, product AS description FROM ref.v_drug_components) AS _components
                    WHERE %%(fragment_condition)s
                    LIMIT 50
            """ % (
                    _('w/'),
                    _('w/')
            )
            # (component name + component strength) -> product
            _SQL_drug_product_by_component_name_and_strength = """
                    SELECT
                            pk_drug_product
                                    AS data,
                            (product || ' (' || preparation || ' %s ' || amount || unit || coalesce('/' || dose_unit, '') || ' ' || substance || ')' || coalesce(' [' || atc_drug || ']', ''))
                                    AS list_label,
                            (product || ' (' || preparation || ' %s ' || amount || unit || coalesce('/' || dose_unit, '') || ' ' || substance || ')' || coalesce(' [' || atc_drug || ']', ''))
                                    AS field_label
                    FROM
                            (SELECT *, substance AS description FROM ref.v_drug_components) AS _components
                    WHERE %%(fragment_condition)s
                    LIMIT 50
            """ % (
                    _('w/'),
                    _('w/')
            )
            # non-drug substance name
            _SQL_substance_name = """
                    SELECT DISTINCT ON (field_label)
                            data, list_label, field_label
                    FROM (
                            SELECT DISTINCT ON (term)
                                    NULL::integer
                                            AS data,
                                    term || ' (ATC: ' || code || ')'
                                            AS list_label,
                                    term
                                            AS field_label
                            FROM
                                    ref.atc
                            WHERE
                                    lower(term) %(fragment_condition)s

                            UNION ALL

                            SELECT DISTINCT ON (description)
                                    NULL::integer
                                            AS data,
                                    description || coalesce(' (ATC: ' || atc || ')', '')
                                            AS list_label,
                                    description
                                            AS field_label
                            FROM
                                    ref.substance
                            WHERE
                                    lower(description) %(fragment_condition)s
                    ) AS nondrug_substances
                    WHERE NOT EXISTS (
                            SELECT 1 FROM ref.v_drug_components WHERE lower(substance) = lower(nondrug_substances.field_label)
                    )
                    LIMIT 30
            """

            # this query UNIONs together individual queries
            _SQL_regex_master_query = """
                    SELECT
                            data, field_label, list_label
                    FROM ((%s) UNION (%s))
                            AS _union
                    ORDER BY list_label
                    LIMIT 50
            """ % (
                    _SQL_drug_product_by_name_and_strength,
                    _SQL_drug_product_by_component_name_and_strength
            )
            _SQL_nonregex_master_query = """
                    SELECT
                            data, field_label, list_label
                    FROM ((%s) UNION (%s) UNION (%s))
                            AS _union
                    ORDER BY list_label
                    LIMIT 50
            """ % (
                    _SQL_drug_product_by_name,
                    _SQL_drug_product_by_component_name,
                    _SQL_substance_name
            )

            _REGEX_name_and_strength = regex.compile(r'^\D+\s*\d+$', regex.UNICODE)

            #--------------------------------------------------------
            def getMatchesByPhrase(self, aFragment):
                    """Return matches for aFragment at start of phrases."""

                    if cSubstanceIntakeObjectMatchProvider._REGEX_name_and_strength.match(aFragment):
                            self._queries = [cSubstanceIntakeObjectMatchProvider._SQL_regex_master_query]
                            fragment_condition = """description ILIKE %(desc)s
                                    AND
                            amount::text ILIKE %(amount)s"""
                            self._args['desc'] = '%s%%' % regex.sub(r'\s*\d+$', '', aFragment)
                            self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                    else:
                            self._queries = [ cSubstanceIntakeObjectMatchProvider._SQL_nonregex_master_query ]
                            fragment_condition = "ILIKE %(fragment)s"
                            self._args['fragment'] = "%s%%" % aFragment

                    return self._find_matches(fragment_condition)

            #--------------------------------------------------------
            def getMatchesByWord(self, aFragment):
                    """Return matches for aFragment at start of words inside phrases."""

                    if cSubstanceIntakeObjectMatchProvider._REGEX_name_and_strength.match(aFragment):
                            self._queries = [cSubstanceIntakeObjectMatchProvider._SQL_regex_master_query]

                            desc = regex.sub(r'\s*\d+$', '', aFragment)
                            desc = gmPG2.sanitize_pg_regex(expression = desc, escape_all = False)

                            fragment_condition = """description ~* %(desc)s
                                    AND
                            amount::text ILIKE %(amount)s"""

                            self._args['desc'] = "( %s)|(^%s)" % (desc, desc)
                            self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                    else:
                            self._queries = [ cSubstanceIntakeObjectMatchProvider._SQL_nonregex_master_query ]
                            fragment_condition = "~* %(fragment)s"
                            aFragment = gmPG2.sanitize_pg_regex(expression = aFragment, escape_all = False)
                            self._args['fragment'] = "( %s)|(^%s)" % (aFragment, aFragment)

                    return self._find_matches(fragment_condition)

            #--------------------------------------------------------
            def getMatchesBySubstr(self, aFragment):
                    """Return matches for aFragment as a true substring."""

                    if cSubstanceIntakeObjectMatchProvider._REGEX_name_and_strength.match(aFragment):
                            self._queries = [cSubstanceIntakeObjectMatchProvider._SQL_regex_master_query]
                            fragment_condition = """description ILIKE %(desc)s
                                    AND
                            amount::text ILIKE %(amount)s"""
                            self._args['desc'] = '%%%s%%' % regex.sub(r'\s*\d+$', '', aFragment)
                            self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                    else:
                            self._queries = [ cSubstanceIntakeObjectMatchProvider._SQL_nonregex_master_query ]
                            fragment_condition = "ILIKE %(fragment)s"
                            self._args['fragment'] = "%%%s%%" % aFragment

                    return self._find_matches(fragment_condition)

    #============================================================
    # drug components
    #------------------------------------------------------------
    _SQL_get_drug_components = 'SELECT * FROM ref.v_drug_components WHERE %s'

    class cDrugComponent(gmBusinessDBObject.cBusinessDBObject):

            _cmd_fetch_payload = _SQL_get_drug_components % 'pk_component = %s'
            _cmds_store_payload = [
                    """UPDATE ref.lnk_dose2drug SET
                                    fk_drug_product = %(pk_drug_product)s,
                                    fk_dose = %(pk_dose)s
                            WHERE
                                    pk = %(pk_component)s
                                            AND
                                    NOT EXISTS (
                                            SELECT 1
                                            FROM clin.substance_intake
                                            WHERE fk_drug_component = %(pk_component)s
                                            LIMIT 1
                                    )
                                            AND
                                    xmin = %(xmin_lnk_dose2drug)s
                            RETURNING
                                    xmin AS xmin_lnk_dose2drug
                    """
            ]
            _updatable_fields = [
                    'pk_drug_product',
                    'pk_dose'
            ]
            #--------------------------------------------------------
            def format(self, left_margin=0, include_loincs=False):
                    lines = []
                    lines.append('%s %s%s' % (
                            self._payload[self._idx['substance']],
                            self._payload[self._idx['amount']],
                            self.formatted_units
                    ))
                    lines.append(_('Component of %s (%s)') % (
                            self._payload[self._idx['drug_product']],
                            self._payload[self._idx['l10n_preparation']]
                    ))
                    if self._payload[self._idx['is_fake_product']]:
                            lines.append(' ' + _('(not a real drug product)'))

                    if self._payload[self._idx['intake_instructions']] is not None:
                            lines.append(_('Instructions: %s') % self._payload[self._idx['intake_instructions']])
                    if self._payload[self._idx['atc_substance']] is not None:
                            lines.append(_('ATC (substance): %s') % self._payload[self._idx['atc_substance']])
                    if self._payload[self._idx['atc_drug']] is not None:
                            lines.append(_('ATC (drug): %s') % self._payload[self._idx['atc_drug']])
                    if self._payload[self._idx['external_code']] is not None:
                            lines.append('%s: %s' % (
                                    self._payload[self._idx['external_code_type']],
                                    self._payload[self._idx['external_code']]
                            ))

                    if include_loincs:
                            if len(self._payload[self._idx['loincs']]) > 0:
                                    lines.append(_('LOINCs to monitor:'))
                            lines.extend ([
                                    ' %s%s%s' % (
                                            loinc['loinc'],
                                            gmTools.coalesce(loinc['max_age_str'], '', ': ' + _('once within %s')),
                                            gmTools.coalesce(loinc['comment'], '', ' (%s)')
                                    ) for loinc in self._payload[self._idx['loincs']]
                            ])

                    return (' ' * left_margin) + ('\n' + (' ' * left_margin)).join(lines)

            #--------------------------------------------------------
            def exists_as_intake(self, pk_patient=None):
                    return substance_intake_exists (
                            pk_component = self._payload[self._idx['pk_component']],
                            pk_identity = pk_patient
                    )

            #--------------------------------------------------------
            def turn_into_intake(self, emr=None, encounter=None, episode=None):
                    return create_substance_intake (
                            pk_component = self._payload[self._idx['pk_component']],
                            pk_encounter = encounter,
                            pk_episode = episode
                    )

            #--------------------------------------------------------
            # properties
            #--------------------------------------------------------
            def _get_containing_drug(self):
                    return cDrugProduct(aPK_obj = self._payload[self._idx['pk_drug_product']])

            containing_drug = property(_get_containing_drug)

            #--------------------------------------------------------
            def _get_is_in_use_by_patients(self):
                    return self._payload[self._idx['is_in_use']]

            is_in_use_by_patients = property(_get_is_in_use_by_patients)

            #--------------------------------------------------------
            def _get_substance_dose(self):
                    return cSubstanceDose(aPK_obj = self._payload[self._idx['pk_dose']])

            substance_dose =  property(_get_substance_dose)

            #--------------------------------------------------------
            def _get_substance(self):
                    return cSubstance(aPK_obj = self._payload[self._idx['pk_substance']])

            substance =  property(_get_substance)

            #--------------------------------------------------------
            def _get_formatted_units(self, short=True):
                    return format_units (
                            self._payload[self._idx['unit']],
                            self._payload[self._idx['dose_unit']],
                            self._payload[self._idx['l10n_preparation']]
                    )

            formatted_units = property(_get_formatted_units)

    #------------------------------------------------------------
    def get_drug_components(return_pks=False):
            cmd = _SQL_get_drug_components % 'true ORDER BY product, substance'
            rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd}], get_col_idx = True)
            if return_pks:
                    return [ r['pk_component'] for r in rows ]
            return [ cDrugComponent(row = {'data': r, 'idx': idx, 'pk_field': 'pk_component'}) for r in rows ]

    #------------------------------------------------------------
    class cDrugComponentMatchProvider(gmMatchProvider.cMatchProvider_SQL2):

            _pattern = regex.compile(r'^\D+\s*\d+$', regex.UNICODE)

            _query_desc_only = """
                    SELECT DISTINCT ON (list_label)
                            r_vdc1.pk_component
                                    AS data,
                            (r_vdc1.substance || ' '
                                    || r_vdc1.amount || r_vdc1.unit || ' '
                                    || r_vdc1.preparation || ' ('
                                    || r_vdc1.product || ' ['
                                            || (
                                                    SELECT array_to_string(array_agg(r_vdc2.amount), ' / ')
                                                    FROM ref.v_drug_components r_vdc2
                                                    WHERE r_vdc2.pk_drug_product = r_vdc1.pk_drug_product
                                            )
                                    || ']'
                             || ')'
                            )       AS field_label,
                            (r_vdc1.substance || ' '
                                    || r_vdc1.amount || r_vdc1.unit || ' '
                                    || r_vdc1.preparation || ' ('
                                    || r_vdc1.product || ' ['
                                            || (
                                                    SELECT array_to_string(array_agg(r_vdc2.amount), ' / ')
                                                    FROM ref.v_drug_components r_vdc2
                                                    WHERE r_vdc2.pk_drug_product = r_vdc1.pk_drug_product
                                            )
                                    || ']'
                             || ')'
                            )       AS list_label
                    FROM ref.v_drug_components r_vdc1
                    WHERE
                            r_vdc1.substance %(fragment_condition)s
                                    OR
                            r_vdc1.product %(fragment_condition)s
                    ORDER BY list_label
                    LIMIT 50"""

            _query_desc_and_amount = """
                    SELECT DISTINCT ON (list_label)
                            pk_component AS data,
                            (r_vdc1.substance || ' '
                                    || r_vdc1.amount || r_vdc1.unit || ' '
                                    || r_vdc1.preparation || ' ('
                                    || r_vdc1.product || ' ['
                                            || (
                                                    SELECT array_to_string(array_agg(r_vdc2.amount), ' / ')
                                                    FROM ref.v_drug_components r_vdc2
                                                    WHERE r_vdc2.pk_drug_product = r_vdc1.pk_drug_product
                                            )
                                    || ']'
                             || ')'
                            )       AS field_label,
                            (r_vdc1.substance || ' '
                                    || r_vdc1.amount || r_vdc1.unit || ' '
                                    || r_vdc1.preparation || ' ('
                                    || r_vdc1.product || ' ['
                                            || (
                                                    SELECT array_to_string(array_agg(r_vdc2.amount), ' / ')
                                                    FROM ref.v_drug_components r_vdc2
                                                    WHERE r_vdc2.pk_drug_product = r_vdc1.pk_drug_product
                                            )
                                    || ']'
                             || ')'
                            )       AS list_label
                    FROM ref.v_drug_components
                    WHERE
                            %(fragment_condition)s
                    ORDER BY list_label
                    LIMIT 50"""
            #--------------------------------------------------------
            def getMatchesByPhrase(self, aFragment):
                    """Return matches for aFragment at start of phrases."""

                    if cDrugComponentMatchProvider._pattern.match(aFragment):
                            self._queries = [cDrugComponentMatchProvider._query_desc_and_amount]
                            fragment_condition = """(substance ILIKE %(desc)s OR product ILIKE %(desc)s)
                                    AND
                            amount::text ILIKE %(amount)s"""
                            self._args['desc'] = '%s%%' % regex.sub(r'\s*\d+$', '', aFragment)
                            self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                    else:
                            self._queries = [cDrugComponentMatchProvider._query_desc_only]
                            fragment_condition = "ILIKE %(fragment)s"
                            self._args['fragment'] = "%s%%" % aFragment

                    return self._find_matches(fragment_condition)
            #--------------------------------------------------------
            def getMatchesByWord(self, aFragment):
                    """Return matches for aFragment at start of words inside phrases."""

                    if cDrugComponentMatchProvider._pattern.match(aFragment):
                            self._queries = [cDrugComponentMatchProvider._query_desc_and_amount]

                            desc = regex.sub(r'\s*\d+$', '', aFragment)
                            desc = gmPG2.sanitize_pg_regex(expression = desc, escape_all = False)

                            fragment_condition = """(substance ~* %(desc)s OR product ~* %(desc)s)
                                    AND
                            amount::text ILIKE %(amount)s"""

                            self._args['desc'] = "( %s)|(^%s)" % (desc, desc)
                            self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                    else:
                            self._queries = [cDrugComponentMatchProvider._query_desc_only]
                            fragment_condition = "~* %(fragment)s"
                            aFragment = gmPG2.sanitize_pg_regex(expression = aFragment, escape_all = False)
                            self._args['fragment'] = "( %s)|(^%s)" % (aFragment, aFragment)

                    return self._find_matches(fragment_condition)
            #--------------------------------------------------------
            def getMatchesBySubstr(self, aFragment):
                    """Return matches for aFragment as a true substring."""

                    if cDrugComponentMatchProvider._pattern.match(aFragment):
                            self._queries = [cDrugComponentMatchProvider._query_desc_and_amount]
                            fragment_condition = """(substance ILIKE %(desc)s OR product ILIKE %(desc)s)
                                    AND
                            amount::text ILIKE %(amount)s"""
                            self._args['desc'] = '%%%s%%' % regex.sub(r'\s*\d+$', '', aFragment)
                            self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                    else:
                            self._queries = [cDrugComponentMatchProvider._query_desc_only]
                            fragment_condition = "ILIKE %(fragment)s"
                            self._args['fragment'] = "%%%s%%" % aFragment

                    return self._find_matches(fragment_condition)

    #============================================================
    # drug products
    #------------------------------------------------------------
    _SQL_get_drug_product = "SELECT * FROM ref.v_drug_products WHERE %s"

    class cDrugProduct(gmBusinessDBObject.cBusinessDBObject):
            """Represents a drug as marketed by a manufacturer or a generic drug product."""

            _cmd_fetch_payload = _SQL_get_drug_product % 'pk_drug_product = %s'
            _cmds_store_payload = [
                    """UPDATE ref.drug_product SET
                                    description = %(product)s,
                                    preparation = %(preparation)s,
                                    atc_code = gm.nullify_empty_string(%(atc)s),
                                    external_code = gm.nullify_empty_string(%(external_code)s),
                                    external_code_type = gm.nullify_empty_string(%(external_code_type)s),
                                    is_fake = %(is_fake_product)s,
                                    fk_data_source = %(pk_data_source)s
                            WHERE
                                    pk = %(pk_drug_product)s
                                            AND
                                    xmin = %(xmin_drug_product)s
                            RETURNING
                                    xmin AS xmin_drug_product
                    """
            ]
            _updatable_fields = [
                    'drug_product',
                    'preparation',
                    'atc',
                    'is_fake_product',
                    'external_code',
                    'external_code_type',
                    'pk_data_source'
            ]
            #--------------------------------------------------------
            def format(self, left_margin=0, include_component_details=False):
                    lines = []
                    lines.append('%s (%s)' % (
                            self._payload[self._idx['drug_product']],
                            self._payload[self._idx['l10n_preparation']]
                            )
                    )
                    if self._payload[self._idx['atc']] is not None:
                            lines.append('ATC: %s' % self._payload[self._idx['atc']])
                    if self._payload[self._idx['external_code']] is not None:
                            lines.append('%s: %s' % (self._payload[self._idx['external_code_type']], self._payload[self._idx['external_code']]))
                    if len(self._payload[self._idx['components']]) > 0:
                            lines.append(_('Components:'))
                            for comp in self._payload[self._idx['components']]:
                                    lines.append(' %s %s %s' % (
                                            comp['substance'],
                                            comp['amount'],
                                            format_units(comp['unit'], comp['dose_unit'], short = False)
                                    ))
                                    if include_component_details:
                                            if comp['intake_instructions'] is not None:
                                                    lines.append(comp['intake_instructions'])
                                            lines.extend([ '%s%s%s' % (
                                                    l['loinc'],
                                                    gmTools.coalesce(l['max_age_str'], '', ': ' + _('once within %s')),
                                                    gmTools.coalesce(l['comment'], '', ' (%s)')
                                            ) for l in comp['loincs'] ])

                    if self._payload[self._idx['is_fake_product']]:
                            lines.append('')
                            lines.append(_('this is a fake drug product'))
                    if self.is_vaccine:
                            lines.append(_('this is a vaccine'))

                    return (' ' * left_margin) + ('\n' + (' ' * left_margin)).join(lines)

            #--------------------------------------------------------
            def save_payload(self, conn=None):
                    success, data = super().save_payload(conn = conn)

                    if not success:
                            return (success, data)

                    if self._payload[self._idx['atc']] is not None:
                            atc = self._payload[self._idx['atc']].strip()
                            if atc != '':
                                    gmATC.propagate_atc (
                                            link_obj = conn,
                                            substance = self._payload[self._idx['drug_product']].strip(),
                                            atc = atc
                                    )

                    return (success, data)

            #--------------------------------------------------------
            def set_substance_doses_as_components(self, substance_doses=None, link_obj=None):
                    if self.is_in_use_by_patients:
                            return False

                    pk_doses2keep = [ s['pk_dose'] for s in substance_doses ]
                    _log.debug('setting components of "%s" from doses: %s', self._payload[self._idx['drug_product']], pk_doses2keep)

                    args = {'pk_drug_product': self._payload[self._idx['pk_drug_product']]}
                    queries = []
                    # INSERT those which are not there yet
                    cmd = """
                            INSERT INTO ref.lnk_dose2drug (
                                    fk_drug_product,
                                    fk_dose
                            )
                            SELECT
                                    %(pk_drug_product)s,
                                    %(pk_dose)s
                            WHERE NOT EXISTS (
                                    SELECT 1 FROM ref.lnk_dose2drug
                                    WHERE
                                            fk_drug_product = %(pk_drug_product)s
                                                    AND
                                            fk_dose = %(pk_dose)s
                            )"""
                    for pk_dose in pk_doses2keep:
                            args['pk_dose'] = pk_dose
                            queries.append({'cmd': cmd, 'args': args.copy()})

                    # DELETE those that don't belong anymore
                    args['doses2keep'] = pk_doses2keep
                    cmd = """
                            DELETE FROM ref.lnk_dose2drug
                            WHERE
                                    fk_drug_product = %(pk_drug_product)s
                                            AND
                                    fk_dose <> ALL(%(doses2keep)s)"""
                    queries.append({'cmd': cmd, 'args': args})
                    gmPG2.run_rw_queries(link_obj = link_obj, queries = queries)
                    self.refetch_payload(link_obj = link_obj)

                    return True

            #--------------------------------------------------------
            def add_component(self, substance=None, atc=None, amount=None, unit=None, dose_unit=None, pk_dose=None, pk_substance=None):

                    if pk_dose is None:
                            if pk_substance is None:
                                    pk_dose = create_substance_dose(substance = substance, atc = atc, amount = amount, unit = unit, dose_unit = dose_unit)['pk_dose']
                            else:
                                    pk_dose = create_substance_dose(pk_substance = pk_substance, atc = atc, amount = amount, unit = unit, dose_unit = dose_unit)['pk_dose']

                    args = {
                            'pk_dose': pk_dose,
                            'pk_drug_product': self.pk_obj
                    }

                    cmd = """
                            INSERT INTO ref.lnk_dose2drug (fk_drug_product, fk_dose)
                            SELECT
                                    %(pk_drug_product)s,
                                    %(pk_dose)s
                            WHERE NOT EXISTS (
                                    SELECT 1 FROM ref.lnk_dose2drug
                                    WHERE
                                            fk_drug_product = %(pk_drug_product)s
                                                    AND
                                            fk_dose = %(pk_dose)s
                            )"""
                    gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': args}])
                    self.refetch_payload()

            #------------------------------------------------------------
            def remove_component(self, pk_dose=None, pk_component=None):
                    if len(self._payload[self._idx['components']]) == 1:
                            _log.error('will not remove the only component of a drug')
                            return False

                    args = {'pk_drug_product': self.pk_obj, 'pk_dose': pk_dose, 'pk_component': pk_component}

                    if pk_component is None:
                            cmd = """DELETE FROM ref.lnk_dose2drug WHERE
                                                    fk_drug_product = %(pk_drug_product)s
                                                            AND
                                                    fk_dose = %(pk_dose)s
                                                            AND
                                                    NOT EXISTS (
                                                            SELECT 1 FROM clin.v_intakes
                                                            WHERE pk_dose = %(pk_dose)s
                                                            LIMIT 1
                                                    )"""
                    else:
                            cmd = """DELETE FROM ref.lnk_dose2drug WHERE
                                                    pk = %(pk_component)s
                                                            AND
                                                    NOT EXISTS (
                                                            SELECT 1 FROM clin.substance_intake
                                                            WHERE fk_drug_component = %(pk_component)s
                                                            LIMIT 1
                                                    )"""

                    gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': args}])
                    self.refetch_payload()
                    return True

            #--------------------------------------------------------
            def exists_as_intake(self, pk_patient=None):
                    return substance_intake_exists (
                            pk_drug_product = self._payload[self._idx['pk_drug_product']],
                            pk_identity = pk_patient
                    )

            #--------------------------------------------------------
            def turn_into_intake(self, emr=None, encounter=None, episode=None):
                    return create_substance_intake (
                            pk_drug_product = self._payload[self._idx['pk_drug_product']],
                            pk_encounter = encounter,
                            pk_episode = episode
                    )

            #--------------------------------------------------------
            def delete_associated_vaccine(self):
                    if self._payload[self._idx['is_vaccine']] is False:
                            return True

                    args = {'pk_product': self._payload[self._idx['pk_drug_product']]}
                    cmd = """DELETE FROM ref.vaccine
                    WHERE
                            fk_drug_product = %(pk_product)s
                                    AND
                            -- not in use:
                            NOT EXISTS (
                                    SELECT 1 FROM clin.vaccination WHERE fk_vaccine = (
                                            select pk from ref.vaccine where fk_drug_product = %(pk_product)s
                                    )
                            )
                    RETURNING *"""
                    rows, idx = gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = False, return_data = True)
                    if len(rows) == 0:
                            _log.debug('cannot delete vaccine on: %s', self)
                            return False
                    return True

            #--------------------------------------------------------
            # properties
            #--------------------------------------------------------
            def _get_external_code(self):
                    return self._payload[self._idx['external_code']]

            external_code = property(_get_external_code)

            #--------------------------------------------------------
            def _get_external_code_type(self):
                    # FIXME: maybe evaluate fk_data_source ?
                    return self._payload[self._idx['external_code_type']]

            external_code_type = property(_get_external_code_type)

            #--------------------------------------------------------
            def _get_components(self):
                    cmd = _SQL_get_drug_components % 'pk_drug_product = %(product)s'
                    args = {'drug_product': self._payload[self._idx['pk_drug_product']]}
                    rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = True)
                    return [ cDrugComponent(row = {'data': r, 'idx': idx, 'pk_field': 'pk_component'}) for r in rows ]

            components = property(_get_components)

            #--------------------------------------------------------
            def _get_components_as_doses(self):
                    pk_doses = [ c['pk_dose'] for c in self._payload[self._idx['components']] ]
                    if len(pk_doses) == 0:
                            return []
                    cmd = _SQL_get_substance_dose % 'pk_dose = ANY(%(pks)s)'
                    args = {'pks': pk_doses}
                    rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = True)
                    return [ cSubstanceDose(row = {'data': r, 'idx': idx, 'pk_field': 'pk_dose'}) for r in rows ]

            components_as_doses = property(_get_components_as_doses)

            #--------------------------------------------------------
            def _get_components_as_substances(self):
                    pk_substances = [ c['pk_substance'] for c in self._payload[self._idx['components']] ]
                    if len(pk_substances) == 0:
                            return []
                    cmd = _SQL_get_substance % 'pk_substance = ANY(%(pks)s)'
                    args = {'pks': pk_substances}
                    rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = True)
                    return [ cSubstance(row = {'data': r, 'idx': idx, 'pk_field': 'pk_substance'}) for r in rows ]

            components_as_substances = property(_get_components_as_substances)

            #--------------------------------------------------------
            def _get_is_fake_product(self):
                    return self._payload[self._idx['is_fake_product']]

            is_fake_product = property(_get_is_fake_product)

            #--------------------------------------------------------
            def _get_is_vaccine(self):
                    return self._payload[self._idx['is_vaccine']]

            is_vaccine = property(_get_is_vaccine)

            #--------------------------------------------------------
            def _get_is_in_use_by_patients(self):
                    cmd = """
                            SELECT EXISTS (
                                    SELECT 1 FROM clin.substance_intake WHERE
                                            fk_drug_component IN (
                                                    SELECT pk FROM ref.lnk_dose2drug WHERE fk_drug_product = %(pk)s
                                            )
                                    LIMIT 1
                            )"""
                    args = {'pk': self.pk_obj}
                    rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = False)
                    return rows[0][0]

            is_in_use_by_patients = property(_get_is_in_use_by_patients)

            #--------------------------------------------------------
            def _get_is_in_use_as_vaccine(self):
                    if self._payload[self._idx['is_vaccine']] is False:
                            return False
                    cmd = 'SELECT EXISTS(SELECT 1 FROM clin.vaccination WHERE fk_vaccine = (select pk from ref.vaccine where fk_drug_product = %(pk)s))'
                    args = {'pk': self.pk_obj}
                    rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = False)
                    return rows[0][0]

            is_in_use_as_vaccine = property(_get_is_in_use_as_vaccine)

    #------------------------------------------------------------
    def get_drug_products(return_pks=False):
            cmd = _SQL_get_drug_product % 'TRUE ORDER BY product'
            rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd}], get_col_idx = True)
            if return_pks:
                    return [ r['pk_drug_product'] for r in rows ]
            return [ cDrugProduct(row = {'data': r, 'idx': idx, 'pk_field': 'pk_drug_product'}) for r in rows ]

    #------------------------------------------------------------
    def get_drug_by_name(product_name=None, preparation=None, link_obj=None):
            args = {'prod_name': product_name, 'prep': preparation}
            cmd = 'SELECT * FROM ref.v_drug_products WHERE lower(product) = lower(%(prod_name)s) AND lower(preparation) = lower(%(prep)s)'
            rows, idx = gmPG2.run_ro_queries(link_obj = link_obj, queries = [{'cmd': cmd, 'args': args}], get_col_idx = True)
            if len(rows) == 0:
                    return None
            return cDrugProduct(row = {'data': rows[0], 'idx': idx, 'pk_field': 'pk_drug_product'})

    #------------------------------------------------------------
    def get_drug_by_atc(atc=None, preparation=None, link_obj=None):
            args = {'atc': atc, 'prep': preparation}
            cmd = 'SELECT * FROM ref.v_drug_products WHERE lower(atc) = lower(%(atc)s) AND lower(preparation) = lower(%(prep)s)'
            rows, idx = gmPG2.run_ro_queries(link_obj = link_obj, queries = [{'cmd': cmd, 'args': args}], get_col_idx = True)
            if len(rows) == 0:
                    return None
            return cDrugProduct(row = {'data': rows[0], 'idx': idx, 'pk_field': 'pk_drug_product'}, link_obj = link_obj)

    #------------------------------------------------------------
    def create_drug_product(product_name=None, preparation=None, return_existing=False, link_obj=None, doses=None):
            if preparation is None:
                    preparation = _('units')
            if preparation.strip() == '':
                    preparation = _('units')
            if return_existing:
                    drug = get_drug_by_name(product_name = product_name, preparation = preparation, link_obj = link_obj)
                    if drug is not None:
                            return drug

            if link_obj is None:
                    link_obj = gmPG2.get_connection(readonly = False)
                    conn_commit = link_obj.commit
                    conn_close = link_obj.close
            else:
                    conn_commit = lambda *x: None
                    conn_close = lambda *x: None
            cmd = 'INSERT INTO ref.drug_product (description, preparation) VALUES (%(prod_name)s, %(prep)s) RETURNING pk'
            args = {'prod_name': product_name, 'prep': preparation}
            rows, idx = gmPG2.run_rw_queries(link_obj = link_obj, queries = [{'cmd': cmd, 'args': args}], return_data = True, get_col_idx = False)
            product = cDrugProduct(aPK_obj = rows[0]['pk'], link_obj = link_obj)
            if doses is not None:
                    product.set_substance_doses_as_components(substance_doses = doses, link_obj = link_obj)
            conn_commit()
            conn_close()
            return product

    #------------------------------------------------------------
    def create_drug_product_by_atc(atc=None, product_name=None, preparation=None, return_existing=False, link_obj=None):

            if atc is None:
                    raise ValueError('cannot create drug product by ATC without ATC')

            if preparation is None:
                    preparation = _('units')

            if preparation.strip() == '':
                    preparation = _('units')

            if return_existing:
                    drug = get_drug_by_atc(atc = atc, preparation = preparation, link_obj = link_obj)
                    if drug is not None:
                            return drug

            drug = create_drug_product (
                    link_obj = link_obj,
                    product_name = product_name,
                    preparation = preparation,
                    return_existing = False
            )
            drug['atc'] = atc
            drug.save(conn = link_obj)
            return drug

    #------------------------------------------------------------
    def delete_drug_product(pk_drug_product=None):
            args = {'pk': pk_drug_product}
            queries = []
            # delete components
            cmd = """
                    DELETE FROM ref.lnk_dose2drug
                    WHERE
                            fk_drug_product = %(pk)s
                                    AND
                            NOT EXISTS (
                                    SELECT 1
                                    FROM clin.v_intakes
                                    WHERE pk_drug_product = %(pk)s
                                    LIMIT 1
                            )"""
            queries.append({'cmd': cmd, 'args': args})
            # delete drug
            cmd = """
                    DELETE FROM ref.drug_product
                    WHERE
                            pk = %(pk)s
                                    AND
                            NOT EXISTS (
                                    SELECT 1 FROM clin.v_intakes
                                    WHERE pk_drug_product = %(pk)s
                                    LIMIT 1
                            )"""
            queries.append({'cmd': cmd, 'args': args})
            gmPG2.run_rw_queries(queries = queries)

    #============================================================
    # substance intake regimen
    #------------------------------------------------------------
    _SQL_get_intake_regimen = 'SELECT * FROM clin.v_intake_regimen WHERE %s'

    class cIntakeRegimen(gmBusinessDBObject.cBusinessDBObject):
            """Represents an intake regimen, either active or inactive."""

            _cmd_fetch_payload = _SQL_get_intake_regimen % 'pk_intake_regimen = %s'
            _cmds_store_payload = [
                    """ UPDATE clin.intake_regimen SET
                                    clin_when = %(started)s,
                                    comment_on_start = gm.nullify_empty_string(%(comment_on_start)s),
                                    planned_duration = %(planned_duration)s,
                                    discontinued = %(discontinued)s,
                                    discontinue_reason = gm.nullify_empty_string(%(discontinue_reason)s),
                                    narrative = gm.nullify_empty_string(%(schedule)s),
                                    fk_encounter = %(pk_encounter)s,
                                    fk_episode = %(pk_episode)s,
                                    fk_dose = %(pk_dose)s,
                                    fk_drug_product = %(pk_drug_product)s,
                                    fk_intake = %(pk_intake)s
                            WHERE
                                    pk = %(pk_intake_regimen)s
                                            AND
                                    xmin = %(xmin_intake_regimen)s
                            RETURNING
                                    xmin AS xmin_intake_regimen
                                    -- also return columns which are calculated in the view used by
                                    -- the initial SELECT such that they will further on contain their
                                    -- updated value:
                                    --, ...
                    """
            ]
            # view columns that can be updated:
            _updatable_fields = [
                    'started',
                    'comment_on_start',
                    'planned_duration',
                    'discontinued',
                    'discontinue_reason',
                    'pk_encounter',
                    'pk_episode',
                    'pk_dose',
                    'pk_drug_product',
                    'pk_intake',
                    'schedule'
            ]
            #--------------------------------------------------------
    #       def format(self):
    #               return u'%s' % self

            #--------------------------------------------------------
            def _get_parsed_schedule(self):
                    tests = [
                            # lead, trail
                            '       1-1-1-1 ',
                            # leading dose
                            '1-1-1-1',
                            '22-1-1-1',
                            '1/3-1-1-1',
                            '/4-1-1-1'
                    ]
                    pattern = "^(\d\d|/\d|\d/\d|\d)[\s-]{1,5}\d{0,2}[\s-]{1,5}\d{0,2}[\s-]{1,5}\d{0,2}$"
                    for test in tests:
                            print(test.strip(), ":", regex.match(pattern, test.strip()))

    #------------------------------------------------------------
    def get_intake_regimen(order_by=None):
            if order_by is None:
                    order_by = u'true'
            else:
                    order_by = u'true ORDER BY %s' % order_by
            cmd = _SQL_get_intake_regimen % order_by
            rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd}], get_col_idx = True)
            return [ cIntakeRegimen(row = {'data': r, 'idx': idx, 'pk_field': 'pk_intake_regimen'}) for r in rows ]

    #------------------------------------------------------------
    def create_intake_regimen(pk_intake=None, started=None, pk_encounter=None, pk_episode=None, schedule=None, discontinued=None, link_obj=None):
            cols = [
                    'fk_intake',
                    'clin_when',
                    'fk_encounter',
                    'fk_episode',
                    'narrative'
            ]
            vals = [
                    '%(pk_intake)s',
                    '%(started)s',
                    '%(pk_encounter)s',
                    '%(pk_episode)s',
                    'gm.nullify_empty_string(%(schedule)s)'
            ]
            query_args = {
                    'pk_intake': pk_intake,
                    'started': started,
                    'pk_encounter': pk_encounter,
                    'pk_episode': pk_episode,
                    'schedule': schedule
            }
            if discontinued:
                    cols.append('discontinued')
                    vals.append('%(discontinued)s')
                    query_args['discontinued'] = discontinued
            cmd = u"""
                    INSERT INTO clin.intake_regimen (
                            %s
                    ) VALUES (
                            %s
                    )
                    RETURNING pk
            """ % (', '.join(cols), ', '.join(vals))
            rows, idx = gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': query_args}], return_data = True, get_col_idx = False, link_obj = link_obj)
            return cIntakeRegimen(aPK_obj = rows[0]['pk'], link_obj = link_obj)

    #------------------------------------------------------------
    def delete_intake_regimen(pk_intake_regimen=None, link_obj=None):
            args = {'pk': pk_intake_regimen}
            cmd = 'DELETE FROM clin.intake_regimen WHERE pk = %(pk)s'
            gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': args}], link_obj = link_obj)
            return True

    #------------------------------------------------------------

    #------------------------------------------------------------
    # widget code
    #------------------------------------------------------------
    #def edit_xxx(parent=None, xxx=None, single_entry=False, presets=None):
    #       pass

    #------------------------------------------------------------
    #def delete_intake_regimen():
    #       pass

    #------------------------------------------------------------
    #def manage_xxx():
    #       pass

    #------------------------------------------------------------
    # remember to add in clinical item generic workflows and generic clinical item formatting

    #============================================================
    # substance intakes
    #------------------------------------------------------------
    _SQL_get_substance_intake = "SELECT * FROM clin.v_intakes WHERE %s"

    class cSubstanceIntakeEntry(gmBusinessDBObject.cBusinessDBObject):
            """Represents a substance having been/being taken by a patient."""

            _cmd_fetch_payload = _SQL_get_substance_intake % 'pk_intake = %s'
            _cmds_store_payload = [
                    """UPDATE clin.intake SET
                                    clin_when = %(last_checked_when)s,
                                    notes4patient = gm.nullify_empty_string(%(notes4patient)s),
                                    narrative = gm.nullify_empty_string(%(notes4provider)s),
                                    use_type = %(use_type)s,
                                    fk_episode = %(pk_episode)s,
                                    fk_encounter = %(pk_encounter)s
                            WHERE
                                    pk = %(pk_intake)s
                                            AND
                                    xmin = %(xmin_intake)s
                            RETURNING
                                    xmin as xmin_intake
                    """
            ]
            _updatable_fields = [
                    'last_checked_when',
                    'notes4patient',
                    'notes4provider'
                    'use_type',
                    'pk_episode',
                    'pk_encounter'
            ]

            #--------------------------------------------------------
            def format_maximum_information(self, patient=None):
                    return self.format (
                            single_line = False,
                            show_all_product_components = True,
                            include_metadata = True,
                            date_format = '%Y %b %d',
                            include_instructions = True,
                            include_loincs = True
                    ).split('\n')

            #--------------------------------------------------------
            def format(self, left_margin=0, date_format='%Y %b %d', single_line=True, allergy=None, show_all_product_components=False, include_metadata=True, include_instructions=False, include_loincs=False, eol='\n'):

                    # medication
                    if self._payload[self._idx['use_type']] is None:
                            if single_line:
                                    return self.format_as_single_line(left_margin = left_margin, date_format = date_format)

                            return self.format_as_multiple_lines (
                                    left_margin = left_margin,
                                    date_format = date_format,
                                    allergy = allergy,
                                    show_all_product_components = show_all_product_components,
                                    include_instructions = include_instructions,
                                    eol = eol
                            )

                    # abuse
                    if single_line:
                            return self.format_as_single_line_abuse(left_margin = left_margin, date_format = date_format)

                    return self.format_as_multiple_lines_abuse(left_margin = left_margin, date_format = date_format, include_metadata = include_metadata, eol = eol)

            #--------------------------------------------------------
            def format_as_single_line_abuse(self, left_margin=0, date_format='%Y %b %d'):
                    return '%s%s: %s (%s)' % (
                            ' ' * left_margin,
                            self._payload[self._idx['substance']],
                            self.use_type_string,
                            gmDateTime.pydt_strftime(self._payload[self._idx['last_checked_when']], '%b %Y')
                    )

            #--------------------------------------------------------
            def format_as_single_line(self, left_margin=0, date_format='%Y %b %d'):

                    if self._payload[self._idx['planned_duration']] is not None:
                            duration = gmDateTime.format_interval (
                                    self._payload[self._idx['planned_duration']],
                                    accuracy_wanted = gmDateTime.acc_days
                            )
                    elif self._payload[self._idx['discontinued']] is not None:
                            duration = gmDateTime.pydt_strftime(self._payload[self._idx['discontinued']], date_format)
                    else:
                            duration = _('?')
                    line = '%s%s (%s %s): %s %s%s' % (
                            ' ' * left_margin,
                            self.medically_formatted_start,
                            gmTools.u_arrow2right,
                            duration,
                            self._payload[self._idx['substance']],
                            self._payload[self._idx['amount']],
                            self.formatted_units
                    )

                    return line

            #--------------------------------------------------------
            def format_as_multiple_lines_abuse(self, left_margin=0, date_format='%Y %b %d', include_metadata=True, eol='\n'):
                    lines = []
                    if include_metadata:
                            lines.append(_('Substance abuse entry                                              [#%s]') % self._payload[self._idx['pk_intake']])
                    lines.append(' ' + _('Substance: %s [#%s]%s') % (
                            self._payload[self._idx['substance']],
                            self._payload[self._idx['pk_substance']],
                            gmTools.coalesce(self._payload[self._idx['atc_substance']], '', ' ATC %s')
                    ))
                    lines.append(' ' + _('Use type: %s') % self.use_type_string)
                    lines.append(' ' + _('Last checked: %s') % gmDateTime.pydt_strftime(self._payload[self._idx['last_checked_when']], '%Y %b %d'))
                    if self._payload[self._idx['discontinued']]:
                            lines.append(_(' Discontinued %s') % (
                                    gmDateTime.pydt_strftime (
                                            self._payload[self._idx['discontinued']],
                                            format = date_format,
                                            accuracy = gmDateTime.acc_days
                                    )
                            ))
                    if self._payload[self._idx['notes4provider']]:
                            lines.append(_(' Notes: %s') % self._payload[self._idx['notes4provider']])
                    if include_metadata:
                            lines.append('')
                            lines.append(_('Revision: #%(row_ver)s, %(mod_when)s by %(mod_by)s.') % {
                                    'row_ver': self._payload[self._idx['row_version']],
                                    'mod_when': gmDateTime.pydt_strftime(self._payload[self._idx['modified_when']]),
                                    'mod_by': self._payload[self._idx['modified_by']]
                            })
                    if eol is None:
                            return lines

                    return eol.join(lines)

            #--------------------------------------------------------
            def format_as_multiple_lines(self, left_margin:int=0, date_format:str='%Y %b %d', allergy=None, show_all_product_components:bool=False, include_instructions:bool=False, include_loincs:bool=False, eol='\n'):# -> list | str:
                    lines = []
                    # header
                    status = _('inactive')
                    if self._payload[self._idx['discontinued']] is None:
                            status = _('active')
                    elif self._payload[self._idx['discontinued']] > gmDateTime.pydt_now_here():
                            status = _('active')
                    lines.append(_('Substance intake entry (%s)   [#%s]                     ') % (
                            status,
                            self._payload[self._idx['pk_intake']]
                    ))
                    # caveat
                    if allergy:
                            certainty = gmTools.bool2subst(allergy['definite'], _('definite'), _('suspected'))
                            lines.append('')
                            lines.append(' !! ---- Cave ---- !!')
                            lines.append(' %s (%s): %s (%s)' % (
                                    allergy['l10n_type'],
                                    certainty,
                                    allergy['descriptor'],
                                    gmTools.coalesce(allergy['reaction'], '')[:40]
                            ))
                            lines.append('')
                    # what
                    lines.append(' ' + _('Substance: %s   [#%s]') % (self._payload[self._idx['substance']], self._payload[self._idx['pk_substance']]))
                    if self._payload[self._idx['l10n_preparation']]:
                            lines.append(' ' + _('Preparation: %s') % self._payload[self._idx['l10n_preparation']])
                    if self._payload[self._idx['amount']]:
                            lines.append(' ' + _('Amount per dose: %s %s') % (
                                    self._payload[self._idx['amount']],
                                    self._get_formatted_units(short = False)
                            ))
                    # codes
                    if self._payload[self._idx['atc_substance']]:
                            lines.append(_(' ATC (substance): %s') % self._payload[self._idx['atc_substance']])
                    if include_loincs and self._payload[self._idx['loincs']]:
                            lines.append('%s %s' % (' ' * left_margin, _('LOINCs to monitor:')))
                            lines.extend(['%s%s%s%s' % (
                                    ' ' * (left_margin + 1),
                                    l['loinc'],
                                    gmTools.coalesce(l['max_age_str'], '', ': ' + _('once within %s')),
                                    gmTools.coalesce(l['comment'], '', ' (%s)')
                            ) for l in self._payload[self._idx['loincs']]
                    ])
                    lines.append('')
                    lines.append('')
                    # drug product
                    product = self.containing_drug
                    if product:
                            lines.append(_(' Product name: %s   [#%s]') % (self._payload[self._idx['drug_product']], self._payload[self._idx['pk_drug_product']]))
                            if self._payload[self._idx['atc_drug']]:
                                    lines.append(_(' ATC (drug): %s') % self._payload[self._idx['atc_drug']])
                            if show_all_product_components and (len(product['components']) > 1):
                                    for comp in product['components']:
                                            if comp['pk_substance'] == self._payload[self._idx['substance']]:
                                                    continue
                                            lines.append('  ' + _('Other component: %s %s %s') % (
                                                    comp['substance'],
                                                    comp['amount'],
                                                    format_units(comp['unit'], comp['dose_unit'])
                                            ))
                                            if comp['intake_instructions']:
                                                    lines.append('   ' + _('Intake: %s') % comp['intake_instructions'])
                                            if include_loincs and comp['loincs']:
                                                    lines.append('   ' + _('LOINCs to monitor:'))
                                                    lines.extend(['    %s%s%s' % (
                                                            l['loinc'],
                                                            gmTools.coalesce(l['max_age_str'], '', ': %s'),
                                                            gmTools.coalesce(l['comment'], '', ' (%s)')
                                                    ) for l in comp['loincs'] ])
                            lines.append('')
                    # regimen
                    if self._payload[self._idx['schedule']]:
                            lines.append(_(' Regimen: %s') % self._payload[self._idx['schedule']])
                    if self._payload[self._idx['planned_duration']] is None:
                            duration = ''
                    else:
                            duration = ' %s %s' % (gmTools.u_arrow2right, gmDateTime.format_interval(self._payload[self._idx['planned_duration']], gmDateTime.acc_days))
                    lines.append(_(' Started %s%s') % (self.medically_formatted_start, duration))
                    if self._payload[self._idx['discontinued']]:
                            lines.append(_(' Discontinued %s') % (
                                    gmDateTime.pydt_strftime (
                                            self._payload[self._idx['discontinued']],
                                            format = date_format,
                                            accuracy = gmDateTime.acc_days
                                    )
                            ))
                    if self._payload[self._idx['discontinue_reason']]:
                            lines.append(_(' Reason: %s') % self._payload[self._idx['discontinue_reason']])
                    lines.append('')
                    # further notes
                    lines.append(_(' Episode: %s')% self._payload[self._idx['episode']])
                    if self._payload[self._idx['health_issue']]:
                            lines.append(_(' Health issue: %s') % self._payload[self._idx['health_issue']])
                    if self._payload[self._idx['notes4provider']]:
                            lines.append(_(' Provider notes: %s') % self._payload[self._idx['notes4provider']])
                    if self._payload[self._idx['notes4patient']]:
                            lines.append(_(' Patient advice: %s') % self._payload[self._idx['notes4patient']])
                    if self._payload[self._idx['intake_instructions']]:
                            lines.append(' ' + _('Intake: %s') % self._payload[self._idx['intake_instructions']])
                    lines.append('')
                    lines.append(_('Revision: #%(row_ver)s, %(mod_when)s by %(mod_by)s.') % {
                            'row_ver': self._payload[self._idx['row_version']],
                            'mod_when': gmDateTime.pydt_strftime(self._payload[self._idx['modified_when']]),
                            'mod_by': self._payload[self._idx['modified_by']]
                    })
                    if eol is None:
                            return lines

                    return eol.join(lines)

            #--------------------------------------------------------
            def turn_into_allergy(self, encounter_id=None, allergy_type='allergy'):
                    allg = gmAllergy.create_allergy (
                            allergene = self._payload[self._idx['substance']],
                            allg_type = allergy_type,
                            episode_id = self._payload[self._idx['pk_episode']],
                            encounter_id = encounter_id
                    )
                    allg['substance'] = gmTools.coalesce (
                            self._payload[self._idx['drug_product']],
                            self._payload[self._idx['substance']]
                    )
                    allg['reaction'] = self._payload[self._idx['discontinue_reason']]
                    allg['atc_code'] = gmTools.coalesce(self._payload[self._idx['atc_substance']], self._payload[self._idx['atc_drug']])
                    if self._payload[self._idx['external_code_product']] is not None:
                            allg['substance_code'] = '%s::::%s' % (self._payload[self._idx['external_code_type_product']], self._payload[self._idx['external_code_product']])

                    if self._payload[self._idx['pk_drug_product']] is None:
                            allg['generics'] = self._payload[self._idx['substance']]
                    else:
                            comps = [ c['substance'] for c in self.containing_drug.components ]
                            if len(comps) == 0:
                                    allg['generics'] = self._payload[self._idx['substance']]
                            else:
                                    allg['generics'] = '; '.join(comps)

                    allg.save()
                    return allg

            #--------------------------------------------------------
            def delete(self):
                    return delete_substance_intake(pk_intake = self._payload[self._idx['pk_intake']])

            #--------------------------------------------------------
            # properties
            #--------------------------------------------------------
            def _get_use_type_string(self):

                    if self._payload[self._idx['use_type']] is None:
                            return _('medication, not abuse')
                    if self._payload[self._idx['use_type']] == 0:
                            return _('no or non-harmful use')
                    if self._payload[self._idx['use_type']] == 1:
                            return _('presently harmful use')
                    if self._payload[self._idx['use_type']] == 2:
                            return _('presently addicted')
                    if self._payload[self._idx['use_type']] == 3:
                            return _('previously addicted')

            use_type_string = property(_get_use_type_string)

            #--------------------------------------------------------
            def _get_external_code(self):
                    drug = self.containing_drug

                    if drug is None:
                            return None

                    return drug.external_code

            external_code = property(_get_external_code)

            #--------------------------------------------------------
            def _get_external_code_type(self):
                    drug = self.containing_drug

                    if drug is None:
                            return None

                    return drug.external_code_type

            external_code_type = property(_get_external_code_type)

            #--------------------------------------------------------
            def _get_containing_drug(self):
                    if self._payload[self._idx['pk_drug_product']] is None:
                            return None

                    return cDrugProduct(aPK_obj = self._payload[self._idx['pk_drug_product']])

            containing_drug = property(_get_containing_drug)

            #--------------------------------------------------------
            def _get_formatted_units(self, short=True):
                    return format_units (
                            self._payload[self._idx['unit']],
                            self._payload[self._idx['dose_unit']],
                            self._payload[self._idx['l10n_preparation']],
                            short = short
                    )

            formatted_units = property(_get_formatted_units)

            #--------------------------------------------------------
            def _get_medically_formatted_start(self):
                    if self._payload[self._idx['comment_on_start']] == '?':
                            return '?'

                    start_prefix = ''
                    if self._payload[self._idx['comment_on_start']] is not None:
                            start_prefix = gmTools.u_almost_equal_to

                    duration_taken = gmDateTime.pydt_now_here() - self._payload[self._idx['started']]

                    three_months = pydt.timedelta(weeks = 13, days = 3)
                    if duration_taken < three_months:
                            return _('%s%s: %s ago%s') % (
                                    start_prefix,
                                    gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%Y %b %d', 'utf8', gmDateTime.acc_days),
                                    gmDateTime.format_interval_medically(duration_taken),
                                    gmTools.coalesce(self._payload[self._idx['comment_on_start']], '', ' (%s)')
                            )

                    five_years = pydt.timedelta(weeks = 265)
                    if duration_taken < five_years:
                            return _('%s%s: %s ago (%s)') % (
                                    start_prefix,
                                    gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%Y %b', 'utf8', gmDateTime.acc_months),
                                    gmDateTime.format_interval_medically(duration_taken),
                                    gmTools.coalesce (
                                            self._payload[self._idx['comment_on_start']],
                                            gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%b %d', 'utf8', gmDateTime.acc_days),
                                    )
                            )

                    return _('%s%s: %s ago (%s)') % (
                            start_prefix,
                            gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%Y', 'utf8', gmDateTime.acc_years),
                            gmDateTime.format_interval_medically(duration_taken),
                            gmTools.coalesce (
                                    self._payload[self._idx['comment_on_start']],
                                    gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%b %d', 'utf8', gmDateTime.acc_days),
                            )
                    )

            medically_formatted_start = property(_get_medically_formatted_start)

            #--------------------------------------------------------
            def _get_medically_formatted_start_end_of_stopped(self, now):

                    # format intro
                    if gmDateTime.pydt_is_today(self._payload[self._idx['discontinued']]):
                            intro = _('until today')
                    else:
                            ended_ago = now - self._payload[self._idx['discontinued']]
                            intro = _('until %s%s ago') % (
                                    gmTools.u_almost_equal_to,
                                    gmDateTime.format_interval_medically(ended_ago),
                            )

                    # format start
                    if self._payload[self._idx['started']] is None:
                            start = gmTools.coalesce(self._payload[self._idx['comment_on_start']], '?')
                    else:
                            start = '%s%s%s' % (
                                    gmTools.bool2subst((self._payload[self._idx['comment_on_start']] is None), '', gmTools.u_almost_equal_to),
                                    gmDateTime.pydt_strftime(self._payload[self._idx['started']], format = '%Y %b %d', accuracy = gmDateTime.acc_days),
                                    gmTools.coalesce(self._payload[self._idx['comment_on_start']], '', ' [%s]')
                            )

                    # format duration taken
                    if self._payload[self._idx['started']] is None:
                            duration_taken_str = '?'
                    else:
                            duration_taken = self._payload[self._idx['discontinued']] - self._payload[self._idx['started']] + pydt.timedelta(days = 1)
                            duration_taken_str = gmDateTime.format_interval (duration_taken, gmDateTime.acc_days)

                    # format duration planned
                    if self._payload[self._idx['planned_duration']] is None:
                            duration_planned_str = ''
                    else:
                            duration_planned_str = _(' [planned: %s]') % gmDateTime.format_interval(self._payload[self._idx['planned_duration']], gmDateTime.acc_days)

                    # format end
                    end = gmDateTime.pydt_strftime(self._payload[self._idx['discontinued']], '%Y %b %d', 'utf8', gmDateTime.acc_days)

                    # assemble
                    txt = '%s (%s %s %s%s %s %s)' % (
                            intro,
                            start,
                            gmTools.u_arrow2right_thick,
                            duration_taken_str,
                            duration_planned_str,
                            gmTools.u_arrow2right_thick,
                            end
                    )
                    return txt

            #--------------------------------------------------------
            def _get_medically_formatted_start_end(self):

                    now = gmDateTime.pydt_now_here()

                    # medications stopped today or before today
                    if self._payload[self._idx['discontinued']] is not None:
                            if (self._payload[self._idx['discontinued']] < now) or (gmDateTime.pydt_is_today(self._payload[self._idx['discontinued']])):
                                    return self._get_medically_formatted_start_end_of_stopped(now)

                    # ongoing medications
                    arrow_parts = []

                    # format start
                    if self._payload[self._idx['started']] is None:
                            start_str = gmTools.coalesce(self._payload[self._idx['comment_on_start']], '?')
                    else:
                            start_prefix = gmTools.bool2subst((self._payload[self._idx['comment_on_start']] is None), '', gmTools.u_almost_equal_to)
                            # starts today
                            if gmDateTime.pydt_is_today(self._payload[self._idx['started']]):
                                    start_str = _('today (%s)') % gmDateTime.pydt_strftime(self._payload[self._idx['started']], format = '%Y %b %d', accuracy = gmDateTime.acc_days)
                            # started in the past
                            elif self._payload[self._idx['started']] < now:
                                    started_ago = now - self._payload[self._idx['started']]
                                    three_months = pydt.timedelta(weeks = 13, days = 3)
                                    five_years = pydt.timedelta(weeks = 265)
                                    if started_ago < three_months:
                                            start_str = _('%s%s%s (%s%s ago, in %s)') % (
                                                    start_prefix,
                                                    gmDateTime.pydt_strftime(self._payload[self._idx['started']], format = '%b %d', accuracy = gmDateTime.acc_days),
                                                    gmTools.coalesce(self._payload[self._idx['comment_on_start']], '', ' [%s]'),
                                                    gmTools.u_almost_equal_to,
                                                    gmDateTime.format_interval_medically(started_ago),
                                                    gmDateTime.pydt_strftime(self._payload[self._idx['started']], format = '%Y', accuracy = gmDateTime.acc_days)
                                            )
                                    elif started_ago < five_years:
                                            start_str = _('%s%s%s (%s%s ago, %s)') % (
                                                    start_prefix,
                                                    gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%Y %b', 'utf8', gmDateTime.acc_months),
                                                    gmTools.coalesce(self._payload[self._idx['comment_on_start']], '', ' [%s]'),
                                                    gmTools.u_almost_equal_to,
                                                    gmDateTime.format_interval_medically(started_ago),
                                                    gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%b %d', 'utf8', gmDateTime.acc_days)
                                            )
                                    else:
                                            start_str = _('%s%s%s (%s%s ago, %s)') % (
                                                    start_prefix,
                                                    gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%Y', 'utf8', gmDateTime.acc_years),
                                                    gmTools.coalesce(self._payload[self._idx['comment_on_start']], '', ' [%s]'),
                                                    gmTools.u_almost_equal_to,
                                                    gmDateTime.format_interval_medically(started_ago),
                                                    gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%b %d', 'utf8', gmDateTime.acc_days),
                                            )
                            # starts in the future
                            else:
                                    starts_in = self._payload[self._idx['started']] - now
                                    start_str = _('%s%s%s (in %s%s)') % (
                                            start_prefix,
                                            gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%Y %b %d', 'utf8', gmDateTime.acc_days),
                                            gmTools.coalesce(self._payload[self._idx['comment_on_start']], '', ' [%s]'),
                                            gmTools.u_almost_equal_to,
                                            gmDateTime.format_interval_medically(starts_in)
                                    )

                    arrow_parts.append(start_str)

                    # format durations
                    durations = []
                    if self._payload[self._idx['discontinued']] is not None:
                            if self._payload[self._idx['started']] is not None:
                                    duration_documented = self._payload[self._idx['discontinued']] - self._payload[self._idx['started']]
                                    durations.append(_('%s (documented)') % gmDateTime.format_interval(duration_documented, gmDateTime.acc_days))
                    if self._payload[self._idx['planned_duration']] is not None:
                            durations.append(_('%s (plan)') % gmDateTime.format_interval(self._payload[self._idx['planned_duration']], gmDateTime.acc_days))
                    if len(durations) == 0:
                            duration_str = '?'
                    else:
                            duration_str = ', '.join(durations)

                    arrow_parts.append(duration_str)

                    # format end
                    if self._payload[self._idx['discontinued']] is None:
                            if self._payload[self._idx['planned_duration']] is None:
                                    end_str = '?'
                            else:
                                    if self._payload[self._idx['started']] is None:
                                            end_str = '?'
                                    else:
                                            planned_end = self._payload[self._idx['started']] + self._payload[self._idx['planned_duration']] - pydt.timedelta(days = 1)
                                            if planned_end.year == now.year:
                                                    end_template = '%b %d'
                                                    if planned_end < now:
                                                            planned_end_from_now_str = _('%s ago, in %s') % (gmDateTime.format_interval(now - planned_end, gmDateTime.acc_days), planned_end.year)
                                                    else:
                                                            planned_end_from_now_str = _('in %s, %s') % (gmDateTime.format_interval(planned_end - now, gmDateTime.acc_days), planned_end.year)
                                            else:
                                                    end_template = '%Y'
                                                    if planned_end < now:
                                                            planned_end_from_now_str = _('%s ago = %s') % (
                                                                    gmDateTime.format_interval(now - planned_end, gmDateTime.acc_days),
                                                                    gmDateTime.pydt_strftime(planned_end, '%b %d', 'utf8', gmDateTime.acc_days)
                                                            )
                                                    else:
                                                            planned_end_from_now_str = _('in %s = %s') % (
                                                                    gmDateTime.format_interval(planned_end - now, gmDateTime.acc_days),
                                                                    gmDateTime.pydt_strftime(planned_end, '%b %d', 'utf8', gmDateTime.acc_days)
                                                            )
                                            end_str = '%s (%s)' % (
                                                    gmDateTime.pydt_strftime(planned_end, end_template, 'utf8', gmDateTime.acc_days),
                                                    planned_end_from_now_str
                                            )
                    else:
                            if gmDateTime.pydt_is_today(self._payload[self._idx['discontinued']]):
                                    end_str = _('today')
                            elif self._payload[self._idx['discontinued']].year == now.year:
                                    end_date_template = '%b %d'
                                    if self._payload[self._idx['discontinued']] < now:
                                            planned_end_from_now_str = _('%s ago, in %s') % (
                                                    gmDateTime.format_interval(now - self._payload[self._idx['discontinued']], gmDateTime.acc_days),
                                                    self._payload[self._idx['discontinued']].year
                                            )
                                    else:
                                            planned_end_from_now_str = _('in %s, %s') % (
                                                    gmDateTime.format_interval(self._payload[self._idx['discontinued']] - now, gmDateTime.acc_days),
                                                    self._payload[self._idx['discontinued']].year
                                            )
                            else:
                                    end_date_template = '%Y'
                                    if self._payload[self._idx['discontinued']] < now:
                                            planned_end_from_now_str = _('%s ago = %s') % (
                                                    gmDateTime.format_interval(now - self._payload[self._idx['discontinued']], gmDateTime.acc_days),
                                                    gmDateTime.pydt_strftime(self._payload[self._idx['discontinued']], '%b %d', 'utf8', gmDateTime.acc_days)
                                            )
                                    else:
                                            planned_end_from_now_str = _('in %s = %s') % (
                                                    gmDateTime.format_interval(self._payload[self._idx['discontinued']] - now, gmDateTime.acc_days),
                                                    gmDateTime.pydt_strftime(self._payload[self._idx['discontinued']], '%b %d', 'utf8', gmDateTime.acc_days)
                                            )
                            end_str = '%s (%s)' % (
                                    gmDateTime.pydt_strftime(self._payload[self._idx['discontinued']], end_date_template, 'utf8', gmDateTime.acc_days),
                                    planned_end_from_now_str
                            )

                    arrow_parts.append(end_str)

                    # assemble
                    return (' %s ' % gmTools.u_arrow2right_thick).join(arrow_parts)

            medically_formatted_start_end = property(_get_medically_formatted_start_end)

            #--------------------------------------------------------
            def _get_as_amts_latex(self, strict=True):
                    return format_substance_intake_as_amts_latex(intake = self, strict=strict)

            as_amts_latex = property(_get_as_amts_latex)

            #--------------------------------------------------------
            def _get_as_amts_data(self, strict=True):
                    return format_substance_intake_as_amts_data(intake = self, strict = strict)

            as_amts_data = property(_get_as_amts_data)

    #------------------------------------------------------------
    def get_substance_intakes(pk_patient=None, return_pks=False):
            args = {'pat': pk_patient}
            if pk_patient is None:
                    cmd = _SQL_get_substance_intake % 'true'
            else:
                    cmd = _SQL_get_substance_intake % 'pk_patient = %(pat)s'
            rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = True)
            if return_pks:
                    return [ r['pk_intake'] for r in rows ]

            return [ cSubstanceIntakeEntry(row = {'data': r, 'idx': idx, 'pk_field': 'pk_intake'}) for r in rows ]

    #------------------------------------------------------------
    def substance_intake_exists(pk_component=None, pk_identity=None, pk_drug_product=None, pk_dose=None, pk_substance=None):

            if [pk_component, pk_drug_product, pk_dose].count(None) != 2:
                    raise ValueError('only one of pk_component, pk_dose, and pk_drug_product can be non-NULL')

            args = {
                    'pk_comp': pk_component,
                    'pk_pat': pk_identity,
                    'pk_drug_product': pk_drug_product,
                    'pk_dose': pk_dose
            }
            where_parts = ['fk_encounter IN (SELECT pk FROM clin.encounter WHERE fk_patient = %(pk_pat)s)']

            if pk_dose is not None:
                    where_parts.append('fk_drug_component IN (SELECT pk FROM ref.lnk_dose2drug WHERE fk_dose = %(pk_dose)s)')
            if pk_component is not None:
                    where_parts.append('fk_drug_component = %(pk_comp)s')
            if pk_drug_product is not None:
                    where_parts.append('fk_drug_component IN (SELECT pk FROM ref.lnk_dose2drug WHERE fk_drug_product = %(pk_drug_product)s)')

            cmd = """
                    SELECT EXISTS (
                            SELECT 1 FROM clin.substance_intake
                            WHERE
                                    %s
                            LIMIT 1
                    )
            """ % '\nAND\n'.join(where_parts)

            rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}])
            return rows[0][0]

    #------------------------------------------------------------
    def substance_intake_exists_by_atc(pk_identity=None, atc=None):

            if (atc is None) or (pk_identity is None):
                    raise ValueError('atc and pk_identity cannot be None')

            args = {
                    'pat': pk_identity,
                    'atc': atc
            }
            where_parts = [
                    'pk_patient = %(pat)s',
                    '((atc_substance = %(atc)s) OR (atc_drug = %(atc)s))'
            ]
            cmd = """
                    SELECT EXISTS (
                            SELECT 1 FROM clin.v_intakes
                            WHERE
                                    %s
                            LIMIT 1
                    )
            """ % '\nAND\n'.join(where_parts)

            rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}])
            return rows[0][0]

    #------------------------------------------------------------
    def create_substance_intake(pk_encounter=None, pk_episode=None, pk_substance=None, pk_component=None, pk_drug_product=None):
            args = {
                    'pk_enc': pk_encounter,
                    'pk_epi': pk_episode,
                    'pk_subst': pk_substance
            }
            cmd = """
                    INSERT INTO clin.intake (
                            fk_encounter,
                            fk_episode,
                            fk_substance
                    ) VALUES (
                            %(pk_enc)s,
                            %(pk_epi)s,
                            %(pk_subst)s
                    )
                    RETURNING pk
            """
            rows, idx = gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': args}], return_data = True)
            return cSubstanceIntakeEntry(aPK_obj = rows[0][0])

    #------------------------------------------------------------
    def delete_substance_intake(pk_intake=None, delete_regimen=False):
            args = {'pk_intake': pk_intake}
            queries = []
            if delete_regimen:
                    queries.append ({
                            'cmd': 'DELETE FROM clin.intake_regimen c_ir WHERE fk_intake = %(pk_intake)s',
                            'args': args
                    })
            queries.append ({
                    'cmd': 'DELETE FROM clin.intake WHERE pk = %(pk_intake)s',
                    'args': args
            })
            gmPG2.run_rw_queries(queries = queries)
            return True

    #------------------------------------------------------------
    # AMTS formatting
    #------------------------------------------------------------
    def format_substance_intake_as_amts_latex(intake=None, strict=True):

            _esc = gmTools.tex_escape_string

            # %(contains)s & %(product)s & %(amount)s%(unit)s & %(preparation)s & \multicolumn{4}{l|}{%(schedule)s} & Einheit & %(notes)s & %(aim)s \tabularnewline{}\hline
            cells = []
            # components
            components = intake.containing_drug['components']
            if len(components) > 3:
                    cells.append(_esc('WS-Kombi.'))
            elif len(components) == 1:
                    c = components[0]
                    if strict:
                            cells.append('\\mbox{%s}' % _esc(c['substance'][:80]))
                    else:
                            cells.append('\\mbox{%s}' % _esc(c['substance']))
            else:
                    if strict:
                            cells.append('\\fontsize{10pt}{12pt}\selectfont %s ' % '\\newline '.join(['\\mbox{%s}' % _esc(c['substance'][:80]) for c in components]))
                    else:
                            cells.append('\\fontsize{10pt}{12pt}\selectfont %s ' % '\\newline '.join(['\\mbox{%s}' % _esc(c['substance']) for c in components]))
            # product
            if strict:
                    cells.append(_esc(intake['drug_product'][:50]))
            else:
                    cells.append(_esc(intake['drug_product']))
            # Wirkstärken
            if len(components) > 3:
                    cells.append('')
            elif len(components) == 1:
                    c = components[0]
                    dose = ('%s%s' % (c['amount'], format_units(c['unit'], c['dose_unit'], short = True))).replace('.', ',')
                    if strict:
                            dose = dose[:11]
                    cells.append(_esc(dose))
            else:           # 2
                    if strict:
                            doses = '\\fontsize{10pt}{12pt}\selectfont %s ' % '\\newline\\ '.join ([
                                    _esc(('%s%s' % (
                                            ('%s' % c['amount']).replace('.', ','),
                                            format_units(c['unit'], c['dose_unit'], short = True)
                                    ))[:11]) for c in components
                            ])
                    else:
                            doses = '\\fontsize{10pt}{12pt}\selectfont %s ' % '\\newline\\ '.join ([
                                    _esc('%s%s' % (
                                            ('%s' % c['amount']).replace('.', ','),
                                            format_units(c['unit'], c['dose_unit'], short = True)
                                    )) for c in components
                            ])
                    cells.append(doses)
            # preparation
            if strict:
                    cells.append(_esc(intake['l10n_preparation'][:7]))
            else:
                    cells.append(_esc(intake['l10n_preparation']))
            # schedule - for now be simple - maybe later parse 1-1-1-1 etc
            if intake['schedule'] is None:
                    cells.append('\\multicolumn{4}{p{3.2cm}|}{\\ }')
            else:
                    # spec says [:20] but implementation guide says: never trim
                    if len(intake['schedule']) > 20:
                            cells.append('\\multicolumn{4}{>{\\RaggedRight}p{3.2cm}|}{\\fontsize{10pt}{12pt}\selectfont %s}' % _esc(intake['schedule']))
                    else:
                            cells.append('\\multicolumn{4}{>{\\RaggedRight}p{3.2cm}|}{%s}' % _esc(intake['schedule']))
            # Einheit to take
            cells.append('')#[:20]
            # notes
            if intake['notes'] is None:
                    cells.append(' ')
            else:
                    if strict:
                            cells.append(_esc(intake['notes'][:80]))
                    else:
                            cells.append('\\fontsize{10pt}{12pt}\selectfont %s ' % _esc(intake['notes']))
            # aim
            if intake['aim'] is None:
                    #cells.append(' ')
                    cells.append(_esc(intake['episode'][:50]))
            else:
                    if strict:
                            cells.append(_esc(intake['aim'][:50]))
                    else:
                            cells.append('\\fontsize{10pt}{12pt}\selectfont %s ' % _esc(intake['aim']))

            table_row = ' & '.join(cells)
            table_row += '\\tabularnewline{}\n\\hline'

            return table_row

    #------------------------------------------------------------
    def format_substance_intake_as_amts_data(intake=None, strict=True):
            """
            <M a="Handelsname" fd="freie Formangabe" t="freies Dosierschema" dud="freie Dosiereinheit (Stück Tab)" r="reason" i="info">
                    <W w="Metformin" s="500 mg"/>
                    <W ...>
            </M>
            """
            if not strict:
                    pass
                    # relax length checks

            M_fields = []
            M_fields.append('a="%s"' % intake['drug_product'])
            M_fields.append('fd="%s"' % intake['l10n_preparation'])
            if intake['schedule'] is not None:
                    M_fields.append('t="%s"' % intake['schedule'])
            #M_fields.append(u'dud="%s"' % intake['dose unit, like Stück'])
            if intake['aim'] is None:
                    M_fields.append('r="%s"' % intake['episode'])
            else:
                    M_fields.append('r="%s"' % intake['aim'])
            if intake['notes'] is not None:
                    M_fields.append('i="%s"' % intake['notes'])
            M_line = '<M %s>' % ' '.join(M_fields)

            W_lines = []
            for comp in intake.containing_drug['components']:
                    W_lines.append('<W w="%s" s="%s %s"/>' % (
                            comp['substance'],
                            comp['amount'],
                            format_units(comp['unit'], comp['dose_unit'], short = True)
                    ))

            return M_line + ''.join(W_lines) + '</M>'

    #------------------------------------------------------------
    def generate_amts_data_template_definition_file(work_dir=None, strict=True):

            _log.debug('generating AMTS data template definition file(workdir=%s, strict=%s)', work_dir, strict)

            if not strict:
                    return __generate_enhanced_amts_data_template_definition_file(work_dir = work_dir)

            amts_lines = [ l for l in ('<MP v="023" U="%s"' % uuid.uuid4().hex + """ l="de-DE"$<<if_not_empty::$<amts_page_idx::::1>$// a="%s"//::>>$$<<if_not_empty::$<amts_page_idx::::>$// z="$<amts_total_pages::::1>$"//::>>$>
    <P g="$<name::%(firstnames)s::45>$" f="$<name::%(lastnames)s::45>$" b="$<date_of_birth::%Y%m%d::8>$"/>
    <A
     n="$<<range_of::$<praxis::%(praxis)s,%(branch)s::>$,$<current_provider::::>$::30>>$"
    $<praxis_address:: s="%(street)s"::>$
    $<praxis_address:: z="%(postcode)s"::>$
    $<praxis_address:: c="%(urb)s"::>$
    $<praxis_comm::workphone// p="%(url)s"::20>$
    $<praxis_comm::email// e="%(url)s"::80>$
     t="$<today::%Y%m%d::8>$"
    />
    <O ai="s.S.$<amts_total_pages::::1>$ unten"/>
    $<amts_intakes_as_data::::9999999>$
    </MP>""").split('\n') ]
    #$<<if_not_empty::$<allergy_list::%(descriptor)s//,::>$//<O ai="%s"/>::>>$

            amts_fname = gmTools.get_unique_filename (
                    prefix = 'gm2amts_data-',
                    suffix = '.txt',
                    tmp_dir = work_dir
            )
            amts_template = io.open(amts_fname, mode = 'wt', encoding = 'utf8')
            amts_template.write('[form]\n')
            amts_template.write('template = $template$\n')
            amts_template.write(''.join(amts_lines))
            amts_template.write('\n')
            amts_template.write('$template$\n')
            amts_template.close()

            return amts_fname

    #------------------------------------------------------------
    def __generate_enhanced_amts_data_template_definition_file(work_dir=None):

            amts_lines = [ l for l in ('<MP v="023" U="%s"' % uuid.uuid4().hex + """ l="de-DE" a="1" z="1">
    <P g="$<name::%(firstnames)s::>$" f="$<name::%(lastnames)s::>$" b="$<date_of_birth::%Y%m%d::8>$"/>
    <A
     n="$<praxis::%(praxis)s,%(branch)s::>$,$<current_provider::::>$"
    $<praxis_address:: s="%(street)s %(number)s %(subunit)s"::>$
    $<praxis_address:: z="%(postcode)s"::>$
    $<praxis_address:: c="%(urb)s"::>$
    $<praxis_comm::workphone// p="%(url)s"::>$
    $<praxis_comm::email// e="%(url)s"::>$
     t="$<today::%Y%m%d::8>$"
    />
    <O ai="Seite 1 unten"/>
    $<amts_intakes_as_data_enhanced::::9999999>$
    </MP>""").split('\n') ]
    #$<<if_not_empty::$<allergy_list::%(descriptor)s//,::>$//<O ai="%s"/>::>>$

            amts_fname = gmTools.get_unique_filename (
                    prefix = 'gm2amts_data-utf8-unabridged-',
                    suffix = '.txt',
                    tmp_dir = work_dir
            )
            amts_template = io.open(amts_fname, mode = 'wt', encoding = 'utf8')
            amts_template.write('[form]\n')
            amts_template.write('template = $template$\n')
            amts_template.write(''.join(amts_lines))
            amts_template.write('\n')
            amts_template.write('$template$\n')
            amts_template.close()

            return amts_fname

    #------------------------------------------------------------
    # AMTS v2.0 -- outdated
    #------------------------------------------------------------
    def format_substance_intake_as_amts_data_v2_0(intake=None, strict=True):

            if not strict:
                    pass
                    # relax length checks

            fields = []

            # components
            components = [ c.split('::') for c in intake.containing_drug['components'] ]
            if len(components) > 3:
                    fields.append('WS-Kombi.')
            elif len(components) == 1:
                    c = components[0]
                    fields.append(c[0][:80])
            else:
                    fields.append('~'.join([c[0][:80] for c in components]))
            # product
            fields.append(intake['drug_product'][:50])
            # Wirkstärken
            if len(components) > 3:
                    fields.append('')
            elif len(components) == 1:
                    c = components[0]
                    fields.append(('%s%s' % (c[1], c[2]))[:11])
            else:
                    fields.append('~'.join([('%s%s' % (c[1], c[2]))[:11] for c in components]))
            # preparation
            fields.append(intake['l10n_preparation'][:7])
            # schedule - for now be simple - maybe later parse 1-1-1-1 etc
            fields.append(gmTools.coalesce(intake['schedule'], '')[:20])
            # Einheit to take
            fields.append('')#[:20]
            # notes
            fields.append(gmTools.coalesce(intake['notes'], '')[:80])
            # aim
            fields.append(gmTools.coalesce(intake['aim'], '')[:50])

            return '|'.join(fields)

    #------------------------------------------------------------
    def calculate_amts_data_check_symbol_v2_0(intakes=None):

            # first char of generic substance or product name
            first_chars = []
            for intake in intakes:
                    first_chars.append(intake['drug_product'][0])

            # add up_per page
            val_sum = 0
            for first_char in first_chars:
                    # ziffer: ascii+7
                    if first_char.isdigit():
                            val_sum += (ord(first_char) + 7)
                    # großbuchstabe: ascii
                    # kleinbuchstabe ascii(großbuchstabe)
                    if first_char.isalpha():
                            val_sum += ord(first_char.upper())
                    # other: 0

            # get remainder of sum mod 36
            tmp, remainder = divmod(val_sum, 36)
            # 0-9 -> '0' - '9'
            if remainder < 10:
                    return '%s' % remainder
            # 10-35 -> 'A' - 'Z'
            return chr(remainder + 55)

    #------------------------------------------------------------
    def generate_amts_data_template_definition_file_v2_0(work_dir=None, strict=True):

            if not strict:
                    return __generate_enhanced_amts_data_template_definition_file(work_dir = work_dir)

            amts_fields = [
                    'MP',
                    '020',  # Version
                    'DE',   # Land
                    'DE',   # Sprache
                    '1',    # Zeichensatz 1 = Ext ASCII (fest) = ISO8859-1 = Latin1
                    '$<today::%Y%m%d::8>$',
                    '$<amts_page_idx::::1>$',                               # to be set by code using the template
                    '$<amts_total_pages::::1>$',                    # to be set by code using the template
                    '0',    # Zertifizierungsstatus

                    '$<name::%(firstnames)s::45>$',
                    '$<name::%(lastnames)s::45>$',
                    '',     # Patienten-ID
                    '$<date_of_birth::%Y%m%d::8>$',

                    '$<<range_of::$<praxis::%(praxis)s,%(branch)s::>$,$<current_provider::::>$::30>>$',
                    '$<praxis_address::%(street)s %(number)s %(subunit)s|%(postcode)s|%(urb)s::57>$',               # 55+2 because of 2 embedded "|"s
                    '$<praxis_comm::workphone::20>$',
                    '$<praxis_comm::email::80>$',

                    #u'264 $<allergy_state::::21>$',                                # param 1, Allergien 25-4 (4 for "264 ", spec says max of 25)
                    '264 Seite $<amts_total_pages::::1>$ unten',    # param 1, Allergien 25-4 (4 for "264 ", spec says max of 25)
                    '', # param 2, not used currently
                    '', # param 3, not used currently

                    # Medikationseinträge
                    '$<amts_intakes_as_data::::9999999>$',

                    '$<amts_check_symbol::::1>$',   # Prüfzeichen, value to be set by code using the template, *per page* !
                    '#@',                                                   # Endesymbol
            ]

            amts_fname = gmTools.get_unique_filename (
                    prefix = 'gm2amts_data-',
                    suffix = '.txt',
                    tmp_dir = work_dir
            )
            amts_template = io.open(amts_fname, mode = 'wt', encoding = 'utf8')
            amts_template.write('[form]\n')
            amts_template.write('template = $template$\n')
            amts_template.write('|'.join(amts_fields))
            amts_template.write('\n')
            amts_template.write('$template$\n')
            amts_template.close()

            return amts_fname

    #------------------------------------------------------------
    def __generate_enhanced_amts_data_template_definition_file_v2_0(work_dir=None):

            amts_fields = [
                    'MP',
                    '020',  # Version
                    'DE',   # Land
                    'DE',   # Sprache
                    '1',    # Zeichensatz 1 = Ext ASCII (fest) = ISO8859-1 = Latin1
                    '$<today::%Y%m%d::8>$',
                    '1',    # idx of this page
                    '1',    # total pages
                    '0',    # Zertifizierungsstatus

                    '$<name::%(firstnames)s::>$',
                    '$<name::%(lastnames)s::>$',
                    '',     # Patienten-ID
                    '$<date_of_birth::%Y%m%d::8>$',

                    '$<praxis::%(praxis)s,%(branch)s::>$,$<current_provider::::>$',
                    '$<praxis_address::%(street)s %(number)s %(subunit)s::>$',
                    '$<praxis_address::%(postcode)s::>$',
                    '$<praxis_address::%(urb)s::>$',
                    '$<praxis_comm::workphone::>$',
                    '$<praxis_comm::email::>$',

                    #u'264 $<allergy_state::::>$',                                  # param 1, Allergien
                    '264 Seite 1 unten',                                                    # param 1, Allergien
                    '', # param 2, not used currently
                    '', # param 3, not used currently

                    # Medikationseinträge
                    '$<amts_intakes_as_data_enhanced::::>$',

                    '$<amts_check_symbol::::1>$',   # Prüfzeichen, value to be set by code using the template, *per page* !
                    '#@',                                                   # Endesymbol
            ]

            amts_fname = gmTools.get_unique_filename (
                    prefix = 'gm2amts_data-utf8-unabridged-',
                    suffix = '.txt',
                    tmp_dir = work_dir
            )
            amts_template = io.open(amts_fname, mode = 'wt', encoding = 'utf8')
            amts_template.write('[form]\n')
            amts_template.write('template = $template$\n')
            amts_template.write('|'.join(amts_fields))
            amts_template.write('\n')
            amts_template.write('$template$\n')
            amts_template.close()

            return amts_fname

    #------------------------------------------------------------
    # other formatting
    #------------------------------------------------------------
    def format_substance_intake_notes(emr=None, output_format='latex', table_type=u'by-product'):

            tex = '%s\n' % _('Additional notes for healthcare professionals')
            tex += '%%%% requires "\\usepackage{longtable}"\n'
            tex += '%%%% requires "\\usepackage{tabu}"\n'
            tex += '\\begin{longtabu} to \\textwidth {|X[,L]|r|X[,L]|}\n'
            tex += '\\hline\n'
            tex += '%s {\\scriptsize (%s)} & %s & %s\\\\\n' % (_('Substance'), _('Drug Product'), _('Strength'), _('Aim'))
            tex += '\\hline\n'
            tex += '%s\n'                   # this is where the lines end up
            tex += '\\end{longtabu}\n'

            current_meds = emr.get_current_medications (
                    include_inactive = False,
                    include_unapproved = False,
                    order_by = 'product, substance'
            )
            # create lines
            lines = []
            for med in current_meds:
                    if med['aim'] is None:
                            aim = ''
                    else:
                            aim = '{\\scriptsize %s}' % gmTools.tex_escape_string(med['aim'])
                    lines.append('%s {\\small (%s: {\\tiny %s})} & %s%s & %s\\\\' % (
                            gmTools.tex_escape_string(med['substance']),
                            gmTools.tex_escape_string(med['l10n_preparation']),
                            gmTools.tex_escape_string(med['drug_product']),
                            med['amount'],
                            gmTools.tex_escape_string(med.formatted_units),
                            aim
                    ))
                    lines.append(u'\\hline')

            return tex % '\n'.join(lines)

    #------------------------------------------------------------
    def format_substance_intake(emr=None, output_format='latex', table_type='by-product'):

            # FIXME: add intake_instructions

            tex = '%s {\\tiny (%s)}\n' % (
                    gmTools.tex_escape_string(_('Medication list')),
                    gmTools.tex_escape_string(_('ordered by brand'))
            )
            tex += '%% requires "\\usepackage{longtable}"\n'
            tex += '%% requires "\\usepackage{tabu}"\n'
            tex += u'\\begin{longtabu} to \\textwidth {|X[-1,L]|X[2.5,L]|}\n'
            tex += u'\\hline\n'
            tex += u'%s & %s\\\\\n' % (
                    gmTools.tex_escape_string(_('Drug')),
                    gmTools.tex_escape_string(_('Regimen / Advice'))
            )
            tex += '\\hline\n'
            tex += '%s\n'
            tex += '\\end{longtabu}\n'

            # aggregate medication data
            current_meds = emr.get_current_medications (
                    include_inactive = False,
                    include_unapproved = False,
                    order_by = 'product, substance'
            )
            line_data = {}
            for med in current_meds:
                    identifier = med['drug_product']

                    try:
                            line_data[identifier]
                    except KeyError:
                            line_data[identifier] = {'drug_product': '', 'l10n_preparation': '', 'schedule': '', 'notes': [], 'strengths': []}

                    line_data[identifier]['drug_product'] = identifier
                    line_data[identifier]['strengths'].append('%s %s%s' % (med['substance'][:20], med['amount'], med.formatted_units))
                    if med['l10n_preparation'] not in identifier:
                            line_data[identifier]['l10n_preparation'] = med['l10n_preparation']
                    sched_parts = []
                    if med['planned_duration'] is not None:
                            sched_parts.append(gmDateTime.format_interval(med['planned_duration'], gmDateTime.acc_days, verbose = True))
                    if med['schedule'] is not None:
                            sched_parts.append(med['schedule'])
                    line_data[identifier]['schedule'] = ': '.join(sched_parts)
                    if med['notes'] is not None:
                            if med['notes'] not in line_data[identifier]['notes']:
                                    line_data[identifier]['notes'].append(med['notes'])
            # format aggregated data
            already_seen = []
            lines = []
            #line1_template = u'\\rule{0pt}{3ex}{\\Large %s} %s & %s \\\\'
            line1_template = u'{\\Large %s} %s & %s\\\\'
            line2_template = u'{\\tiny %s}                     & {\\scriptsize %s}\\\\'
            line3_template = u'                                & {\\scriptsize %s}\\\\'
            for med in current_meds:
                    identifier = med['drug_product']
                    if identifier in already_seen:
                            continue
                    already_seen.append(identifier)
                    lines.append (line1_template % (
                            gmTools.tex_escape_string(line_data[identifier]['drug_product']),
                            gmTools.tex_escape_string(line_data[identifier]['l10n_preparation']),
                            gmTools.tex_escape_string(line_data[identifier]['schedule'])
                    ))
                    strengths = gmTools.tex_escape_string(' / '.join(line_data[identifier]['strengths']))
                    if len(line_data[identifier]['notes']) == 0:
                            first_note = ''
                    else:
                            first_note = gmTools.tex_escape_string(line_data[identifier]['notes'][0])
                    lines.append(line2_template % (strengths, first_note))
                    if len(line_data[identifier]['notes']) > 1:
                            for note in line_data[identifier]['notes'][1:]:
                                    lines.append(line3_template % gmTools.tex_escape_string(note))
                    lines.append('\\hline')

            return tex % '\n'.join(lines)

    #============================================================
    # convenience functions
    #------------------------------------------------------------
    def create_default_medication_history_episode(pk_health_issue=None, encounter=None, link_obj=None):
            return gmEMRStructItems.create_episode (
                    pk_health_issue = pk_health_issue,
                    episode_name = DEFAULT_MEDICATION_HISTORY_EPISODE,
                    is_open = False,
                    allow_dupes = False,
                    encounter = encounter,
                    link_obj = link_obj
            )

    #------------------------------------------------------------
    def get_tobacco():
            nicotine = create_substance_dose_by_atc (
                    substance = _('nicotine'),
                    atc = gmATC.ATC_NICOTINE,
                    amount = 1,
                    unit = 'pack',
                    dose_unit = 'year'
            )
            tobacco = create_drug_product (
                    product_name = _('nicotine'),
                    preparation = _('tobacco'),
                    doses = [nicotine],
                    return_existing = True
            )
            tobacco['is_fake_product'] = True
            tobacco.save()
            return tobacco

    #------------------------------------------------------------
    def get_alcohol():
            ethanol = create_substance_dose_by_atc (
                    substance = _('ethanol'),
                    atc = gmATC.ATC_ETHANOL,
                    amount = 1,
                    unit = 'g',
                    dose_unit = 'ml'
            )
            drink = create_drug_product (
                    product_name = _('alcohol'),
                    preparation = _('liquid'),
                    doses = [ethanol],
                    return_existing = True
            )
            drink['is_fake_product'] = True
            drink.save()
            return drink

    #------------------------------------------------------------
    def get_other_drug(name=None, pk_dose=None):
            if pk_dose is None:
                    content = create_substance_dose (
                            substance = name,
                            amount = 1,
                            unit = _('unit'),
                            dose_unit = _('unit')
                    )
            else:
                    content = {'pk_dose': pk_dose}          #cSubstanceDose(aPK_obj = pk_dose)
            drug = create_drug_product (
                    product_name = name,
                    preparation = _('unit'),
                    doses = [content],
                    return_existing = True
            )
            drug['is_fake_product'] = True
            drug.save()
            return drug

    #------------------------------------------------------------
    def format_units(unit, dose_unit, preparation=None, short=True):
            if short:
                    return '%s%s' % (unit, gmTools.coalesce(dose_unit, '', '/%s'))

            return '%s / %s' % (
                    unit,
                    gmTools.coalesce (
                            dose_unit,
                            _('delivery unit%s') % gmTools.coalesce(preparation, '', ' (%s)'),
                            '%s'
                    )
            )

    #============================================================
    # main
    #------------------------------------------------------------
    if __name__ == "__main__":

            if len(sys.argv) < 2:
                    sys.exit()

            if sys.argv[1] != 'test':
                    sys.exit()

            gmDateTime.init()

            #--------------------------------------------------------
            # generic
            #--------------------------------------------------------
            def test_create_substance_intake():
                    intake = create_substance_intake (
                            pk_encounter = 1,
                            pk_episode = 1,
                            pk_substance = 99
                    )
                    print(intake)

            #--------------------------------------------------------
            def test_get_substances():
                    for s in get_substances():
                            ##print s
                            print("--------------------------")
                            print(s.format())
                            print('in use:', s.is_in_use_by_patients)
                            print('is component:', s.is_drug_component)

                    s = cSubstance(1)
                    print(s)
                    print(s['loincs'])
                    print(s.format())
                    print('in use:', s.is_in_use_by_patients)
                    print('is component:', s.is_drug_component)

            #--------------------------------------------------------
            def test_get_doses():
                    for d in get_substance_doses():
                            #print d
                            print("--------------------------")
                            print(d.format(left_margin = 1, include_loincs = True))
                            print('in use:', d.is_in_use_by_patients)
                            print('is component:', d.is_drug_component)

            #--------------------------------------------------------
            def test_get_components():
                    for c in get_drug_components():
                            #print c
                            print('--------------------------------------')
                            print(c.format())
                            print('dose:', c.substance_dose.format())
                            print('substance:', c.substance.format())

            #--------------------------------------------------------
            def test_get_drugs():
                    for d in get_drug_products():
                            if d['is_fake_product'] or d.is_vaccine:
                                    continue
                            print('--------------------------------------')
                            print(d.format())
                            for c in d.components:
                                    print('-------')
                                    print(c.format())
                                    print(c.substance_dose.format())
                                    print(c.substance.format())
                            input()

            #--------------------------------------------------------
            def test_intake_regimen():
                    conn = gmPG2.get_connection(readonly = False)
    #               for reg in get_intake_regimen():
    #                       #print reg
    #                       print('------------------------------------------------')
    #                       #print('\n'.join(reg.format_maximum_information()))
    #                       print('\n'.join(reg.format()))
    #                       input()
                    start = gmDateTime.pydt_replace(gmDateTime.pydt_now_here(), year = 1965)
                    end = gmDateTime.pydt_replace(start, second = start.second + 1)
                    reg = create_intake_regimen (
                            pk_intake = 1,
                            started = start,
                            pk_encounter = 1,
                            pk_episode = 1,
                            schedule = 'test schedule',
                            discontinued = end,
                            link_obj = conn
                    )
                    print('\n'.join(reg.format()))
                    input()
                    reg['schedule'] = 'every now and then'
                    reg.save(conn=conn)
                    print('\n'.join(reg.format()))
                    input()
                    reg['pk_drug_product'] = 139
                    reg['pk_dose'] = 474
                    reg.save(conn=conn)
                    print('\n'.join(reg.format()))
                    input()
                    print(delete_intake_regimen(pk_intake_regimen = reg['pk_intake_regimen'], link_obj = conn))

                    conn.rollback()
                    conn.close()

            #--------------------------------------------------------
            def test_get_intake_regimen():
                    for i in get_intake_regimen():
                            #print i
                            print('------------------------------------------------')
                            #print('\n'.join(i.format_maximum_information()))
                            print('\n'.join(i.format()))
                            input()

            #--------------------------------------------------------
            def test_get_intakes():
                    for i in get_substance_intakes():
                            #print i
                            print('------------------------------------------------')
                            print('\n'.join(i.format_maximum_information()))

            #--------------------------------------------------------
            def test_intake_formatting():
                    i = get_substance_intakes()[0]
                    print('------------------------------------------------')
                    print('\n'.join(i.format_maximum_information()))
                    input()
                    print('------------------------------------------------')
                    print(i.format())
                    input()
                    print('------------------------------------------------')
                    print(i.format_as_single_line())
                    input()
                    print('------------------------------------------------')
                    print(i.format_as_single_line_abuse())
                    input()
                    print('------------------------------------------------')
                    print(i.format_as_multiple_lines())
                    input()
                    print('------------------------------------------------')
                    print(i.format_as_multiple_lines_abuse())

            #--------------------------------------------------------
            def test_get_habit_drugs():
                    print(get_tobacco().format())
                    print(get_alcohol().format())
                    print(get_other_drug(name = 'LSD').format())

            #--------------------------------------------------------
            def test_drug2renal_insufficiency_url():
                    drug2renal_insufficiency_url(search_term = 'Metoprolol')

            #--------------------------------------------------------
            def test_medically_formatted_start_end():
                    cmd = "SELECT pk_intake FROM clin.v_intakes"
                    rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd}])
                    for row in rows:
                            entry = cSubstanceIntakeEntry(row['pk_intake'])
                            print('===============================================================')
                            print(entry.format(left_margin = 1, single_line = False, show_all_product_components = True))
                            print('--------------------------------')
                            print(entry.medically_formatted_start_end)
                            gmTools.prompted_input()

            #--------------------------------------------------------
            def test_generate_amts_data_template_definition_file(work_dir=None, strict=True):
                    print('file:', generate_amts_data_template_definition_file(strict = True))

            #--------------------------------------------------------
            def test_format_substance_intake_as_amts_data():
                    #print format_substance_intake_as_amts_data(cSubstanceIntakeEntry(1))
                    print(cSubstanceIntakeEntry(1).as_amts_data)

            #--------------------------------------------------------
            def test_delete_intake():
                    delete_substance_intake(pk_intake = 9, delete_regimen = False)

            #--------------------------------------------------------
            def test_URLs():
                    import webbrowser
                    import time
                    urls = [
                            URL_renal_insufficiency,
                            URL_renal_insufficiency_search_template % 'Metoprolol',
                            URL_long_qt,
                            URL_drug_adr_german_default
                    ]
                    for url in urls:
                            print(url)
                            webbrowser.open(url, new = 2, autoraise = True)
                            input('enter for next')
                            time.sleep(0.1)

            #--------------------------------------------------------
            # generic
            test_URLs()
            #test_drug2renal_insufficiency_url()
            #test_interaction_check()
            #test_medically_formatted_start_end()

            gmPG2.request_login_params(setup_pool = True)
            #test_get_substances()
            #test_get_doses()
            #test_get_components()
            #test_get_drugs()
            #test_get_intakes()
            #test_get_intake_regimen()
            #test_intake_formatting()
            #test_intake_regimen()
            #test_create_substance_intake()
            #test_delete_intake()

            #test_get_habit_drugs()

            # AMTS
            #test_generate_amts_data_template_definition_file()
            #test_format_substance_intake_as_amts_data()

## Functions

`def calculate_amts_data_check_symbol_v2_0(intakes=None)`
  Expand source code

      def calculate_amts_data_check_symbol_v2_0(intakes=None):

              # first char of generic substance or product name
              first_chars = []
              for intake in intakes:
                      first_chars.append(intake['drug_product'][0])

              # add up_per page
              val_sum = 0
              for first_char in first_chars:
                      # ziffer: ascii+7
                      if first_char.isdigit():
                              val_sum += (ord(first_char) + 7)
                      # großbuchstabe: ascii
                      # kleinbuchstabe ascii(großbuchstabe)
                      if first_char.isalpha():
                              val_sum += ord(first_char.upper())
                      # other: 0

              # get remainder of sum mod 36
              tmp, remainder = divmod(val_sum, 36)
              # 0-9 -> '0' - '9'
              if remainder < 10:
                      return '%s' % remainder
              # 10-35 -> 'A' - 'Z'
              return chr(remainder + 55)

`def create_default_medication_history_episode(pk_health_issue=None, encounter=None, link_obj=None)`
  Expand source code

      def create_default_medication_history_episode(pk_health_issue=None, encounter=None, link_obj=None):
              return gmEMRStructItems.create_episode (
                      pk_health_issue = pk_health_issue,
                      episode_name = DEFAULT_MEDICATION_HISTORY_EPISODE,
                      is_open = False,
                      allow_dupes = False,
                      encounter = encounter,
                      link_obj = link_obj
              )

`def create_drug_product(product_name=None, preparation=None, return_existing=False, link_obj=None, doses=None)`
  Expand source code

      def create_drug_product(product_name=None, preparation=None, return_existing=False, link_obj=None, doses=None):
              if preparation is None:
                      preparation = _('units')
              if preparation.strip() == '':
                      preparation = _('units')
              if return_existing:
                      drug = get_drug_by_name(product_name = product_name, preparation = preparation, link_obj = link_obj)
                      if drug is not None:
                              return drug

              if link_obj is None:
                      link_obj = gmPG2.get_connection(readonly = False)
                      conn_commit = link_obj.commit
                      conn_close = link_obj.close
              else:
                      conn_commit = lambda *x: None
                      conn_close = lambda *x: None
              cmd = 'INSERT INTO ref.drug_product (description, preparation) VALUES (%(prod_name)s, %(prep)s) RETURNING pk'
              args = {'prod_name': product_name, 'prep': preparation}
              rows, idx = gmPG2.run_rw_queries(link_obj = link_obj, queries = [{'cmd': cmd, 'args': args}], return_data = True, get_col_idx = False)
              product = cDrugProduct(aPK_obj = rows[0]['pk'], link_obj = link_obj)
              if doses is not None:
                      product.set_substance_doses_as_components(substance_doses = doses, link_obj = link_obj)
              conn_commit()
              conn_close()
              return product

`def create_drug_product_by_atc(atc=None, product_name=None, preparation=None, return_existing=False, link_obj=None)`
  Expand source code

      def create_drug_product_by_atc(atc=None, product_name=None, preparation=None, return_existing=False, link_obj=None):

              if atc is None:
                      raise ValueError('cannot create drug product by ATC without ATC')

              if preparation is None:
                      preparation = _('units')

              if preparation.strip() == '':
                      preparation = _('units')

              if return_existing:
                      drug = get_drug_by_atc(atc = atc, preparation = preparation, link_obj = link_obj)
                      if drug is not None:
                              return drug

              drug = create_drug_product (
                      link_obj = link_obj,
                      product_name = product_name,
                      preparation = preparation,
                      return_existing = False
              )
              drug['atc'] = atc
              drug.save(conn = link_obj)
              return drug

`def create_intake_regimen(pk_intake=None, started=None, pk_encounter=None, pk_episode=None, schedule=None, discontinued=None, link_obj=None)`
  Expand source code

      def create_intake_regimen(pk_intake=None, started=None, pk_encounter=None, pk_episode=None, schedule=None, discontinued=None, link_obj=None):
              cols = [
                      'fk_intake',
                      'clin_when',
                      'fk_encounter',
                      'fk_episode',
                      'narrative'
              ]
              vals = [
                      '%(pk_intake)s',
                      '%(started)s',
                      '%(pk_encounter)s',
                      '%(pk_episode)s',
                      'gm.nullify_empty_string(%(schedule)s)'
              ]
              query_args = {
                      'pk_intake': pk_intake,
                      'started': started,
                      'pk_encounter': pk_encounter,
                      'pk_episode': pk_episode,
                      'schedule': schedule
              }
              if discontinued:
                      cols.append('discontinued')
                      vals.append('%(discontinued)s')
                      query_args['discontinued'] = discontinued
              cmd = u"""
                      INSERT INTO clin.intake_regimen (
                              %s
                      ) VALUES (
                              %s
                      )
                      RETURNING pk
              """ % (', '.join(cols), ', '.join(vals))
              rows, idx = gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': query_args}], return_data = True, get_col_idx = False, link_obj = link_obj)
              return cIntakeRegimen(aPK_obj = rows[0]['pk'], link_obj = link_obj)

`def create_substance(link_obj=None, substance=None, atc=None)`
  Expand source code

      def create_substance(link_obj=None, substance=None, atc=None):
              if atc is not None:
                      atc = atc.strip()

              args = {
                      'desc': substance.strip(),
                      'atc': atc
              }
              cmd = "SELECT pk FROM ref.substance WHERE lower(description) = lower(%(desc)s)"
              rows, idx = gmPG2.run_ro_queries(link_obj = link_obj, queries = [{'cmd': cmd, 'args': args}])

              if len(rows) == 0:
                      cmd = """
                              INSERT INTO ref.substance (description, atc) VALUES (
                                      %(desc)s,
                                      coalesce (
                                              gm.nullify_empty_string(%(atc)s),
                                              (SELECT code FROM ref.atc WHERE term = %(desc)s LIMIT 1)
                                      )
                              ) RETURNING pk"""
                      rows, idx = gmPG2.run_rw_queries(link_obj = link_obj, queries = [{'cmd': cmd, 'args': args}], return_data = True, get_col_idx = False)

              if atc is not None:
                      gmATC.propagate_atc(link_obj = link_obj, substance = substance.strip(), atc = atc)

              return cSubstance(aPK_obj = rows[0]['pk'], link_obj = link_obj)

`def create_substance_by_atc(substance=None, atc=None, link_obj=None)`
  Expand source code

      def create_substance_by_atc(substance=None, atc=None, link_obj=None):

              if atc is None:
                      raise ValueError('<atc> must be supplied')
              atc = atc.strip()
              if atc == '':
                      raise ValueError('<atc> cannot be empty: [%s]', atc)

              queries = []
              args = {
                      'desc': substance.strip(),
                      'atc': atc
              }
              # in case the substance already exists: add ATC
              cmd = "UPDATE ref.substance SET atc = %(atc)s WHERE lower(description) = lower(%(desc)s) AND atc IS NULL"
              queries.append({'cmd': cmd, 'args': args})
              # or else INSERT the substance
              cmd = """
                      INSERT INTO ref.substance (description, atc)
                              SELECT
                                      %(desc)s,
                                      %(atc)s
                              WHERE NOT EXISTS (
                                      SELECT 1 FROM ref.substance WHERE atc = %(atc)s
                              )
                      RETURNING pk"""
              queries.append({'cmd': cmd, 'args': args})
              rows, idx = gmPG2.run_rw_queries(link_obj = link_obj, queries = queries, return_data = True, get_col_idx = False)
              if len(rows) == 0:
                      cmd = "SELECT pk FROM ref.substance WHERE atc = %(atc)s LIMIT 1"
                      rows, idx = gmPG2.run_ro_queries(link_obj = link_obj, queries = [{'cmd': cmd, 'args': args}])

              return cSubstance(aPK_obj = rows[0]['pk'], link_obj = link_obj)

`def create_substance_dose(link_obj=None, pk_substance=None, substance=None, atc=None, amount=None, unit=None, dose_unit=None)`
  Expand source code

      def create_substance_dose(link_obj=None, pk_substance=None, substance=None, atc=None, amount=None, unit=None, dose_unit=None):

              if [pk_substance, substance].count(None) != 1:
                      raise ValueError('exctly one of <pk_substance> and <substance> must be None')

              converted, amount = gmTools.input2decimal(amount)
              if not converted:
                      raise ValueError('<amount> must be a number: %s (is: %s)', amount, type(amount))

              if pk_substance is None:
                      pk_substance = create_substance(link_obj = link_obj, substance = substance, atc = atc)['pk_substance']

              args = {
                      'pk_subst': pk_substance,
                      'amount': amount,
                      'unit': unit.strip(),
                      'dose_unit': dose_unit
              }
              cmd = """
                      SELECT pk FROM ref.dose
                      WHERE
                              fk_substance = %(pk_subst)s
                                      AND
                              amount = %(amount)s
                                      AND
                              unit = %(unit)s
                                      AND
                              dose_unit IS NOT DISTINCT FROM gm.nullify_empty_string(%(dose_unit)s)
                      """
              rows, idx = gmPG2.run_ro_queries(link_obj = link_obj, queries = [{'cmd': cmd, 'args': args}])

              if len(rows) == 0:
                      cmd = """
                              INSERT INTO ref.dose (fk_substance, amount, unit, dose_unit) VALUES (
                                      %(pk_subst)s,
                                      %(amount)s,
                                      gm.nullify_empty_string(%(unit)s),
                                      gm.nullify_empty_string(%(dose_unit)s)
                              ) RETURNING pk"""
                      rows, idx = gmPG2.run_rw_queries(link_obj = link_obj, queries = [{'cmd': cmd, 'args': args}], return_data = True, get_col_idx = False)

              return cSubstanceDose(aPK_obj = rows[0]['pk'], link_obj = link_obj)

`def create_substance_dose_by_atc(link_obj=None, substance=None, atc=None, amount=None, unit=None, dose_unit=None)`
  Expand source code

      def create_substance_dose_by_atc(link_obj=None, substance=None, atc=None, amount=None, unit=None, dose_unit=None):
              subst = create_substance_by_atc (
                      link_obj = link_obj,
                      substance = substance,
                      atc = atc
              )
              return create_substance_dose (
                      link_obj = link_obj,
                      pk_substance = subst['pk_substance'],
                      amount = amount,
                      unit = unit,
                      dose_unit = dose_unit
              )

`def create_substance_intake(pk_encounter=None, pk_episode=None, pk_substance=None, pk_component=None, pk_drug_product=None)`
  Expand source code

      def create_substance_intake(pk_encounter=None, pk_episode=None, pk_substance=None, pk_component=None, pk_drug_product=None):
              args = {
                      'pk_enc': pk_encounter,
                      'pk_epi': pk_episode,
                      'pk_subst': pk_substance
              }
              cmd = """
                      INSERT INTO clin.intake (
                              fk_encounter,
                              fk_episode,
                              fk_substance
                      ) VALUES (
                              %(pk_enc)s,
                              %(pk_epi)s,
                              %(pk_subst)s
                      )
                      RETURNING pk
              """
              rows, idx = gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': args}], return_data = True)
              return cSubstanceIntakeEntry(aPK_obj = rows[0][0])

`def delete_drug_product(pk_drug_product=None)`
  Expand source code

      def delete_drug_product(pk_drug_product=None):
              args = {'pk': pk_drug_product}
              queries = []
              # delete components
              cmd = """
                      DELETE FROM ref.lnk_dose2drug
                      WHERE
                              fk_drug_product = %(pk)s
                                      AND
                              NOT EXISTS (
                                      SELECT 1
                                      FROM clin.v_intakes
                                      WHERE pk_drug_product = %(pk)s
                                      LIMIT 1
                              )"""
              queries.append({'cmd': cmd, 'args': args})
              # delete drug
              cmd = """
                      DELETE FROM ref.drug_product
                      WHERE
                              pk = %(pk)s
                                      AND
                              NOT EXISTS (
                                      SELECT 1 FROM clin.v_intakes
                                      WHERE pk_drug_product = %(pk)s
                                      LIMIT 1
                              )"""
              queries.append({'cmd': cmd, 'args': args})
              gmPG2.run_rw_queries(queries = queries)

`def delete_intake_regimen(pk_intake_regimen=None, link_obj=None)`
  Expand source code

      def delete_intake_regimen(pk_intake_regimen=None, link_obj=None):
              args = {'pk': pk_intake_regimen}
              cmd = 'DELETE FROM clin.intake_regimen WHERE pk = %(pk)s'
              gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': args}], link_obj = link_obj)
              return True

`def delete_substance(pk_substance=None)`
  Expand source code

      def delete_substance(pk_substance=None):
              args = {'pk': pk_substance}
              cmd = """
                      DELETE FROM ref.substance WHERE
                              pk = %(pk)s
                                      AND
                              -- must not currently be used with a patient
                              NOT EXISTS (
                                      SELECT 1 FROM clin.v_intakes
                                      WHERE pk_substance = %(pk)s
                                      LIMIT 1
                              )
                                      AND
                              -- must not currently have doses defined for it
                              NOT EXISTS (
                                      SELECT 1 FROM ref.dose
                                      WHERE fk_substance = %(pk)s
                                      LIMIT 1
                              )
              """
              gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': args}])
              return True

`def delete_substance_dose(pk_dose=None)`
  Expand source code

      def delete_substance_dose(pk_dose=None):
              args = {'pk_dose': pk_dose}
              cmd = """
                      DELETE FROM ref.dose WHERE
                              pk = %(pk_dose)s
                                      AND
                              -- must not currently be used with a patient
                              NOT EXISTS (
                                      SELECT 1 FROM clin.v_intakes
                                      WHERE pk_dose = %(pk_dose)s
                                      LIMIT 1
                              )
                                      AND
                              -- must not currently be linked to a drug
                              NOT EXISTS (
                                      SELECT 1 FROM ref.lnk_dose2drug
                                      WHERE fk_dose = %(pk_dose)s
                                      LIMIT 1
                              )
              """
              gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': args}])
              return True

`def delete_substance_intake(pk_intake=None, delete_regimen=False)`
  Expand source code

      def delete_substance_intake(pk_intake=None, delete_regimen=False):
              args = {'pk_intake': pk_intake}
              queries = []
              if delete_regimen:
                      queries.append ({
                              'cmd': 'DELETE FROM clin.intake_regimen c_ir WHERE fk_intake = %(pk_intake)s',
                              'args': args
                      })
              queries.append ({
                      'cmd': 'DELETE FROM clin.intake WHERE pk = %(pk_intake)s',
                      'args': args
              })
              gmPG2.run_rw_queries(queries = queries)
              return True

`def drug2renal_insufficiency_url(search_term=None)`
  Expand source code

      def drug2renal_insufficiency_url(search_term=None):

              if search_term is None:
                      return URL_renal_insufficiency

              if isinstance(search_term, str):
                      if search_term.strip() == '':
                              return URL_renal_insufficiency

              terms = []
              names = []

              if isinstance(search_term, cDrugProduct):
                      if search_term['atc'] is not None:
                              terms.append(search_term['atc'])

              elif isinstance(search_term, cSubstanceIntakeEntry):
                      names.append(search_term['substance'])
                      if search_term['atc_drug'] is not None:
                              terms.append(search_term['atc_drug'])
                      if search_term['atc_substance'] is not None:
                              terms.append(search_term['atc_substance'])

              elif isinstance(search_term, cDrugComponent):
                      names.append(search_term['substance'])
                      if search_term['atc_drug'] is not None:
                              terms.append(search_term['atc_drug'])
                      if search_term['atc_substance'] is not None:
                              terms.append(search_term['atc_substance'])

              elif isinstance(search_term, cSubstance):
                      names.append(search_term['substance'])
                      if search_term['atc'] is not None:
                              terms.append(search_term['atc'])

              elif isinstance(search_term, cSubstanceDose):
                      names.append(search_term['substance'])
                      if search_term['atc'] is not None:
                              terms.append(search_term['atc_substance'])

              elif search_term is not None:
                      names.append('%s' % search_term)
                      terms.extend(gmATC.text2atc(text = '%s' % search_term, fuzzy = True))

              for name in names:
                      if name.endswith('e'):
                              terms.append(name[:-1])
                      else:
                              terms.append(name)

              url = URL_renal_insufficiency_search_template % '+OR+'.join(terms)

              _log.debug('renal insufficiency URL: %s', url)

              return url

`def format_substance_intake(emr=None, output_format='latex', table_type='by-product')`
  Expand source code

      def format_substance_intake(emr=None, output_format='latex', table_type='by-product'):

              # FIXME: add intake_instructions

              tex = '%s {\\tiny (%s)}\n' % (
                      gmTools.tex_escape_string(_('Medication list')),
                      gmTools.tex_escape_string(_('ordered by brand'))
              )
              tex += '%% requires "\\usepackage{longtable}"\n'
              tex += '%% requires "\\usepackage{tabu}"\n'
              tex += u'\\begin{longtabu} to \\textwidth {|X[-1,L]|X[2.5,L]|}\n'
              tex += u'\\hline\n'
              tex += u'%s & %s\\\\\n' % (
                      gmTools.tex_escape_string(_('Drug')),
                      gmTools.tex_escape_string(_('Regimen / Advice'))
              )
              tex += '\\hline\n'
              tex += '%s\n'
              tex += '\\end{longtabu}\n'

              # aggregate medication data
              current_meds = emr.get_current_medications (
                      include_inactive = False,
                      include_unapproved = False,
                      order_by = 'product, substance'
              )
              line_data = {}
              for med in current_meds:
                      identifier = med['drug_product']

                      try:
                              line_data[identifier]
                      except KeyError:
                              line_data[identifier] = {'drug_product': '', 'l10n_preparation': '', 'schedule': '', 'notes': [], 'strengths': []}

                      line_data[identifier]['drug_product'] = identifier
                      line_data[identifier]['strengths'].append('%s %s%s' % (med['substance'][:20], med['amount'], med.formatted_units))
                      if med['l10n_preparation'] not in identifier:
                              line_data[identifier]['l10n_preparation'] = med['l10n_preparation']
                      sched_parts = []
                      if med['planned_duration'] is not None:
                              sched_parts.append(gmDateTime.format_interval(med['planned_duration'], gmDateTime.acc_days, verbose = True))
                      if med['schedule'] is not None:
                              sched_parts.append(med['schedule'])
                      line_data[identifier]['schedule'] = ': '.join(sched_parts)
                      if med['notes'] is not None:
                              if med['notes'] not in line_data[identifier]['notes']:
                                      line_data[identifier]['notes'].append(med['notes'])
              # format aggregated data
              already_seen = []
              lines = []
              #line1_template = u'\\rule{0pt}{3ex}{\\Large %s} %s & %s \\\\'
              line1_template = u'{\\Large %s} %s & %s\\\\'
              line2_template = u'{\\tiny %s}                     & {\\scriptsize %s}\\\\'
              line3_template = u'                                & {\\scriptsize %s}\\\\'
              for med in current_meds:
                      identifier = med['drug_product']
                      if identifier in already_seen:
                              continue
                      already_seen.append(identifier)
                      lines.append (line1_template % (
                              gmTools.tex_escape_string(line_data[identifier]['drug_product']),
                              gmTools.tex_escape_string(line_data[identifier]['l10n_preparation']),
                              gmTools.tex_escape_string(line_data[identifier]['schedule'])
                      ))
                      strengths = gmTools.tex_escape_string(' / '.join(line_data[identifier]['strengths']))
                      if len(line_data[identifier]['notes']) == 0:
                              first_note = ''
                      else:
                              first_note = gmTools.tex_escape_string(line_data[identifier]['notes'][0])
                      lines.append(line2_template % (strengths, first_note))
                      if len(line_data[identifier]['notes']) > 1:
                              for note in line_data[identifier]['notes'][1:]:
                                      lines.append(line3_template % gmTools.tex_escape_string(note))
                      lines.append('\\hline')

              return tex % '\n'.join(lines)

`def format_substance_intake_as_amts_data(intake=None, strict=True)`

  Expand source code

      def format_substance_intake_as_amts_data(intake=None, strict=True):
              """
              <M a="Handelsname" fd="freie Formangabe" t="freies Dosierschema" dud="freie Dosiereinheit (Stück Tab)" r="reason" i="info">
                      <W w="Metformin" s="500 mg"/>
                      <W ...>
              </M>
              """
              if not strict:
                      pass
                      # relax length checks

              M_fields = []
              M_fields.append('a="%s"' % intake['drug_product'])
              M_fields.append('fd="%s"' % intake['l10n_preparation'])
              if intake['schedule'] is not None:
                      M_fields.append('t="%s"' % intake['schedule'])
              #M_fields.append(u'dud="%s"' % intake['dose unit, like Stück'])
              if intake['aim'] is None:
                      M_fields.append('r="%s"' % intake['episode'])
              else:
                      M_fields.append('r="%s"' % intake['aim'])
              if intake['notes'] is not None:
                      M_fields.append('i="%s"' % intake['notes'])
              M_line = '<M %s>' % ' '.join(M_fields)

              W_lines = []
              for comp in intake.containing_drug['components']:
                      W_lines.append('<W w="%s" s="%s %s"/>' % (
                              comp['substance'],
                              comp['amount'],
                              format_units(comp['unit'], comp['dose_unit'], short = True)
                      ))

              return M_line + ''.join(W_lines) + '</M>'

`def format_substance_intake_as_amts_data_v2_0(intake=None, strict=True)`
  Expand source code

      def format_substance_intake_as_amts_data_v2_0(intake=None, strict=True):

              if not strict:
                      pass
                      # relax length checks

              fields = []

              # components
              components = [ c.split('::') for c in intake.containing_drug['components'] ]
              if len(components) > 3:
                      fields.append('WS-Kombi.')
              elif len(components) == 1:
                      c = components[0]
                      fields.append(c[0][:80])
              else:
                      fields.append('~'.join([c[0][:80] for c in components]))
              # product
              fields.append(intake['drug_product'][:50])
              # Wirkstärken
              if len(components) > 3:
                      fields.append('')
              elif len(components) == 1:
                      c = components[0]
                      fields.append(('%s%s' % (c[1], c[2]))[:11])
              else:
                      fields.append('~'.join([('%s%s' % (c[1], c[2]))[:11] for c in components]))
              # preparation
              fields.append(intake['l10n_preparation'][:7])
              # schedule - for now be simple - maybe later parse 1-1-1-1 etc
              fields.append(gmTools.coalesce(intake['schedule'], '')[:20])
              # Einheit to take
              fields.append('')#[:20]
              # notes
              fields.append(gmTools.coalesce(intake['notes'], '')[:80])
              # aim
              fields.append(gmTools.coalesce(intake['aim'], '')[:50])

              return '|'.join(fields)

`def format_substance_intake_as_amts_latex(intake=None, strict=True)`
  Expand source code

      def format_substance_intake_as_amts_latex(intake=None, strict=True):

              _esc = gmTools.tex_escape_string

              # %(contains)s & %(product)s & %(amount)s%(unit)s & %(preparation)s & \multicolumn{4}{l|}{%(schedule)s} & Einheit & %(notes)s & %(aim)s \tabularnewline{}\hline
              cells = []
              # components
              components = intake.containing_drug['components']
              if len(components) > 3:
                      cells.append(_esc('WS-Kombi.'))
              elif len(components) == 1:
                      c = components[0]
                      if strict:
                              cells.append('\\mbox{%s}' % _esc(c['substance'][:80]))
                      else:
                              cells.append('\\mbox{%s}' % _esc(c['substance']))
              else:
                      if strict:
                              cells.append('\\fontsize{10pt}{12pt}\selectfont %s ' % '\\newline '.join(['\\mbox{%s}' % _esc(c['substance'][:80]) for c in components]))
                      else:
                              cells.append('\\fontsize{10pt}{12pt}\selectfont %s ' % '\\newline '.join(['\\mbox{%s}' % _esc(c['substance']) for c in components]))
              # product
              if strict:
                      cells.append(_esc(intake['drug_product'][:50]))
              else:
                      cells.append(_esc(intake['drug_product']))
              # Wirkstärken
              if len(components) > 3:
                      cells.append('')
              elif len(components) == 1:
                      c = components[0]
                      dose = ('%s%s' % (c['amount'], format_units(c['unit'], c['dose_unit'], short = True))).replace('.', ',')
                      if strict:
                              dose = dose[:11]
                      cells.append(_esc(dose))
              else:           # 2
                      if strict:
                              doses = '\\fontsize{10pt}{12pt}\selectfont %s ' % '\\newline\\ '.join ([
                                      _esc(('%s%s' % (
                                              ('%s' % c['amount']).replace('.', ','),
                                              format_units(c['unit'], c['dose_unit'], short = True)
                                      ))[:11]) for c in components
                              ])
                      else:
                              doses = '\\fontsize{10pt}{12pt}\selectfont %s ' % '\\newline\\ '.join ([
                                      _esc('%s%s' % (
                                              ('%s' % c['amount']).replace('.', ','),
                                              format_units(c['unit'], c['dose_unit'], short = True)
                                      )) for c in components
                              ])
                      cells.append(doses)
              # preparation
              if strict:
                      cells.append(_esc(intake['l10n_preparation'][:7]))
              else:
                      cells.append(_esc(intake['l10n_preparation']))
              # schedule - for now be simple - maybe later parse 1-1-1-1 etc
              if intake['schedule'] is None:
                      cells.append('\\multicolumn{4}{p{3.2cm}|}{\\ }')
              else:
                      # spec says [:20] but implementation guide says: never trim
                      if len(intake['schedule']) > 20:
                              cells.append('\\multicolumn{4}{>{\\RaggedRight}p{3.2cm}|}{\\fontsize{10pt}{12pt}\selectfont %s}' % _esc(intake['schedule']))
                      else:
                              cells.append('\\multicolumn{4}{>{\\RaggedRight}p{3.2cm}|}{%s}' % _esc(intake['schedule']))
              # Einheit to take
              cells.append('')#[:20]
              # notes
              if intake['notes'] is None:
                      cells.append(' ')
              else:
                      if strict:
                              cells.append(_esc(intake['notes'][:80]))
                      else:
                              cells.append('\\fontsize{10pt}{12pt}\selectfont %s ' % _esc(intake['notes']))
              # aim
              if intake['aim'] is None:
                      #cells.append(' ')
                      cells.append(_esc(intake['episode'][:50]))
              else:
                      if strict:
                              cells.append(_esc(intake['aim'][:50]))
                      else:
                              cells.append('\\fontsize{10pt}{12pt}\selectfont %s ' % _esc(intake['aim']))

              table_row = ' & '.join(cells)
              table_row += '\\tabularnewline{}\n\\hline'

              return table_row

`def format_substance_intake_notes(emr=None, output_format='latex', table_type='by-product')`
  Expand source code

      def format_substance_intake_notes(emr=None, output_format='latex', table_type=u'by-product'):

              tex = '%s\n' % _('Additional notes for healthcare professionals')
              tex += '%%%% requires "\\usepackage{longtable}"\n'
              tex += '%%%% requires "\\usepackage{tabu}"\n'
              tex += '\\begin{longtabu} to \\textwidth {|X[,L]|r|X[,L]|}\n'
              tex += '\\hline\n'
              tex += '%s {\\scriptsize (%s)} & %s & %s\\\\\n' % (_('Substance'), _('Drug Product'), _('Strength'), _('Aim'))
              tex += '\\hline\n'
              tex += '%s\n'                   # this is where the lines end up
              tex += '\\end{longtabu}\n'

              current_meds = emr.get_current_medications (
                      include_inactive = False,
                      include_unapproved = False,
                      order_by = 'product, substance'
              )
              # create lines
              lines = []
              for med in current_meds:
                      if med['aim'] is None:
                              aim = ''
                      else:
                              aim = '{\\scriptsize %s}' % gmTools.tex_escape_string(med['aim'])
                      lines.append('%s {\\small (%s: {\\tiny %s})} & %s%s & %s\\\\' % (
                              gmTools.tex_escape_string(med['substance']),
                              gmTools.tex_escape_string(med['l10n_preparation']),
                              gmTools.tex_escape_string(med['drug_product']),
                              med['amount'],
                              gmTools.tex_escape_string(med.formatted_units),
                              aim
                      ))
                      lines.append(u'\\hline')

              return tex % '\n'.join(lines)

`def format_units(unit, dose_unit, preparation=None, short=True)`
  Expand source code

      def format_units(unit, dose_unit, preparation=None, short=True):
              if short:
                      return '%s%s' % (unit, gmTools.coalesce(dose_unit, '', '/%s'))

              return '%s / %s' % (
                      unit,
                      gmTools.coalesce (
                              dose_unit,
                              _('delivery unit%s') % gmTools.coalesce(preparation, '', ' (%s)'),
                              '%s'
                      )
              )

`def generate_amts_data_template_definition_file(work_dir=None, strict=True)`
  Expand source code

      def generate_amts_data_template_definition_file(work_dir=None, strict=True):

              _log.debug('generating AMTS data template definition file(workdir=%s, strict=%s)', work_dir, strict)

              if not strict:
                      return __generate_enhanced_amts_data_template_definition_file(work_dir = work_dir)

              amts_lines = [ l for l in ('<MP v="023" U="%s"' % uuid.uuid4().hex + """ l="de-DE"$<<if_not_empty::$<amts_page_idx::::1>$// a="%s"//::>>$$<<if_not_empty::$<amts_page_idx::::>$// z="$<amts_total_pages::::1>$"//::>>$>
      <P g="$<name::%(firstnames)s::45>$" f="$<name::%(lastnames)s::45>$" b="$<date_of_birth::%Y%m%d::8>$"/>
      <A
       n="$<<range_of::$<praxis::%(praxis)s,%(branch)s::>$,$<current_provider::::>$::30>>$"
      $<praxis_address:: s="%(street)s"::>$
      $<praxis_address:: z="%(postcode)s"::>$
      $<praxis_address:: c="%(urb)s"::>$
      $<praxis_comm::workphone// p="%(url)s"::20>$
      $<praxis_comm::email// e="%(url)s"::80>$
       t="$<today::%Y%m%d::8>$"
      />
      <O ai="s.S.$<amts_total_pages::::1>$ unten"/>
      $<amts_intakes_as_data::::9999999>$
      </MP>""").split('\n') ]
      #$<<if_not_empty::$<allergy_list::%(descriptor)s//,::>$//<O ai="%s"/>::>>$

              amts_fname = gmTools.get_unique_filename (
                      prefix = 'gm2amts_data-',
                      suffix = '.txt',
                      tmp_dir = work_dir
              )
              amts_template = io.open(amts_fname, mode = 'wt', encoding = 'utf8')
              amts_template.write('[form]\n')
              amts_template.write('template = $template$\n')
              amts_template.write(''.join(amts_lines))
              amts_template.write('\n')
              amts_template.write('$template$\n')
              amts_template.close()

              return amts_fname

`def generate_amts_data_template_definition_file_v2_0(work_dir=None, strict=True)`
  Expand source code

      def generate_amts_data_template_definition_file_v2_0(work_dir=None, strict=True):

              if not strict:
                      return __generate_enhanced_amts_data_template_definition_file(work_dir = work_dir)

              amts_fields = [
                      'MP',
                      '020',  # Version
                      'DE',   # Land
                      'DE',   # Sprache
                      '1',    # Zeichensatz 1 = Ext ASCII (fest) = ISO8859-1 = Latin1
                      '$<today::%Y%m%d::8>$',
                      '$<amts_page_idx::::1>$',                               # to be set by code using the template
                      '$<amts_total_pages::::1>$',                    # to be set by code using the template
                      '0',    # Zertifizierungsstatus

                      '$<name::%(firstnames)s::45>$',
                      '$<name::%(lastnames)s::45>$',
                      '',     # Patienten-ID
                      '$<date_of_birth::%Y%m%d::8>$',

                      '$<<range_of::$<praxis::%(praxis)s,%(branch)s::>$,$<current_provider::::>$::30>>$',
                      '$<praxis_address::%(street)s %(number)s %(subunit)s|%(postcode)s|%(urb)s::57>$',               # 55+2 because of 2 embedded "|"s
                      '$<praxis_comm::workphone::20>$',
                      '$<praxis_comm::email::80>$',

                      #u'264 $<allergy_state::::21>$',                                # param 1, Allergien 25-4 (4 for "264 ", spec says max of 25)
                      '264 Seite $<amts_total_pages::::1>$ unten',    # param 1, Allergien 25-4 (4 for "264 ", spec says max of 25)
                      '', # param 2, not used currently
                      '', # param 3, not used currently

                      # Medikationseinträge
                      '$<amts_intakes_as_data::::9999999>$',

                      '$<amts_check_symbol::::1>$',   # Prüfzeichen, value to be set by code using the template, *per page* !
                      '#@',                                                   # Endesymbol
              ]

              amts_fname = gmTools.get_unique_filename (
                      prefix = 'gm2amts_data-',
                      suffix = '.txt',
                      tmp_dir = work_dir
              )
              amts_template = io.open(amts_fname, mode = 'wt', encoding = 'utf8')
              amts_template.write('[form]\n')
              amts_template.write('template = $template$\n')
              amts_template.write('|'.join(amts_fields))
              amts_template.write('\n')
              amts_template.write('$template$\n')
              amts_template.close()

              return amts_fname

`def get_alcohol()`
  Expand source code

      def get_alcohol():
              ethanol = create_substance_dose_by_atc (
                      substance = _('ethanol'),
                      atc = gmATC.ATC_ETHANOL,
                      amount = 1,
                      unit = 'g',
                      dose_unit = 'ml'
              )
              drink = create_drug_product (
                      product_name = _('alcohol'),
                      preparation = _('liquid'),
                      doses = [ethanol],
                      return_existing = True
              )
              drink['is_fake_product'] = True
              drink.save()
              return drink

`def get_drug_by_atc(atc=None, preparation=None, link_obj=None)`
  Expand source code

      def get_drug_by_atc(atc=None, preparation=None, link_obj=None):
              args = {'atc': atc, 'prep': preparation}
              cmd = 'SELECT * FROM ref.v_drug_products WHERE lower(atc) = lower(%(atc)s) AND lower(preparation) = lower(%(prep)s)'
              rows, idx = gmPG2.run_ro_queries(link_obj = link_obj, queries = [{'cmd': cmd, 'args': args}], get_col_idx = True)
              if len(rows) == 0:
                      return None
              return cDrugProduct(row = {'data': rows[0], 'idx': idx, 'pk_field': 'pk_drug_product'}, link_obj = link_obj)

`def get_drug_by_name(product_name=None, preparation=None, link_obj=None)`
  Expand source code

      def get_drug_by_name(product_name=None, preparation=None, link_obj=None):
              args = {'prod_name': product_name, 'prep': preparation}
              cmd = 'SELECT * FROM ref.v_drug_products WHERE lower(product) = lower(%(prod_name)s) AND lower(preparation) = lower(%(prep)s)'
              rows, idx = gmPG2.run_ro_queries(link_obj = link_obj, queries = [{'cmd': cmd, 'args': args}], get_col_idx = True)
              if len(rows) == 0:
                      return None
              return cDrugProduct(row = {'data': rows[0], 'idx': idx, 'pk_field': 'pk_drug_product'})

`def get_drug_components(return_pks=False)`
  Expand source code

      def get_drug_components(return_pks=False):
              cmd = _SQL_get_drug_components % 'true ORDER BY product, substance'
              rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd}], get_col_idx = True)
              if return_pks:
                      return [ r['pk_component'] for r in rows ]
              return [ cDrugComponent(row = {'data': r, 'idx': idx, 'pk_field': 'pk_component'}) for r in rows ]

`def get_drug_products(return_pks=False)`
  Expand source code

      def get_drug_products(return_pks=False):
              cmd = _SQL_get_drug_product % 'TRUE ORDER BY product'
              rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd}], get_col_idx = True)
              if return_pks:
                      return [ r['pk_drug_product'] for r in rows ]
              return [ cDrugProduct(row = {'data': r, 'idx': idx, 'pk_field': 'pk_drug_product'}) for r in rows ]

`def get_intake_regimen(order_by=None)`
  Expand source code

      def get_intake_regimen(order_by=None):
              if order_by is None:
                      order_by = u'true'
              else:
                      order_by = u'true ORDER BY %s' % order_by
              cmd = _SQL_get_intake_regimen % order_by
              rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd}], get_col_idx = True)
              return [ cIntakeRegimen(row = {'data': r, 'idx': idx, 'pk_field': 'pk_intake_regimen'}) for r in rows ]

`def get_other_drug(name=None, pk_dose=None)`
  Expand source code

      def get_other_drug(name=None, pk_dose=None):
              if pk_dose is None:
                      content = create_substance_dose (
                              substance = name,
                              amount = 1,
                              unit = _('unit'),
                              dose_unit = _('unit')
                      )
              else:
                      content = {'pk_dose': pk_dose}          #cSubstanceDose(aPK_obj = pk_dose)
              drug = create_drug_product (
                      product_name = name,
                      preparation = _('unit'),
                      doses = [content],
                      return_existing = True
              )
              drug['is_fake_product'] = True
              drug.save()
              return drug

`def get_substance_doses(order_by=None, return_pks=False)`
  Expand source code

      def get_substance_doses(order_by=None, return_pks=False):
              if order_by is None:
                      order_by = 'true'
              else:
                      order_by = 'true ORDER BY %s' % order_by
              cmd = _SQL_get_substance_dose % order_by
              rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd}], get_col_idx = True)
              if return_pks:
                      return [ r['pk_dose'] for r in rows ]
              return [ cSubstanceDose(row = {'data': r, 'idx': idx, 'pk_field': 'pk_dose'}) for r in rows ]

`def get_substance_intakes(pk_patient=None, return_pks=False)`
  Expand source code

      def get_substance_intakes(pk_patient=None, return_pks=False):
              args = {'pat': pk_patient}
              if pk_patient is None:
                      cmd = _SQL_get_substance_intake % 'true'
              else:
                      cmd = _SQL_get_substance_intake % 'pk_patient = %(pat)s'
              rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = True)
              if return_pks:
                      return [ r['pk_intake'] for r in rows ]

              return [ cSubstanceIntakeEntry(row = {'data': r, 'idx': idx, 'pk_field': 'pk_intake'}) for r in rows ]

`def get_substances(order_by=None, return_pks=False)`
  Expand source code

      def get_substances(order_by=None, return_pks=False):
              if order_by is None:
                      order_by = 'true'
              else:
                      order_by = 'true ORDER BY %s' % order_by
              cmd = _SQL_get_substance % order_by
              rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd}], get_col_idx = True)
              if return_pks:
                      return [ r['pk_substance'] for r in rows ]
              return [ cSubstance(row = {'data': r, 'idx': idx, 'pk_field': 'pk_substance'}) for r in rows ]

`def get_tobacco()`
  Expand source code

      def get_tobacco():
              nicotine = create_substance_dose_by_atc (
                      substance = _('nicotine'),
                      atc = gmATC.ATC_NICOTINE,
                      amount = 1,
                      unit = 'pack',
                      dose_unit = 'year'
              )
              tobacco = create_drug_product (
                      product_name = _('nicotine'),
                      preparation = _('tobacco'),
                      doses = [nicotine],
                      return_existing = True
              )
              tobacco['is_fake_product'] = True
              tobacco.save()
              return tobacco

`def substance_intake_exists(pk_component=None, pk_identity=None, pk_drug_product=None, pk_dose=None, pk_substance=None)`
  Expand source code

      def substance_intake_exists(pk_component=None, pk_identity=None, pk_drug_product=None, pk_dose=None, pk_substance=None):

              if [pk_component, pk_drug_product, pk_dose].count(None) != 2:
                      raise ValueError('only one of pk_component, pk_dose, and pk_drug_product can be non-NULL')

              args = {
                      'pk_comp': pk_component,
                      'pk_pat': pk_identity,
                      'pk_drug_product': pk_drug_product,
                      'pk_dose': pk_dose
              }
              where_parts = ['fk_encounter IN (SELECT pk FROM clin.encounter WHERE fk_patient = %(pk_pat)s)']

              if pk_dose is not None:
                      where_parts.append('fk_drug_component IN (SELECT pk FROM ref.lnk_dose2drug WHERE fk_dose = %(pk_dose)s)')
              if pk_component is not None:
                      where_parts.append('fk_drug_component = %(pk_comp)s')
              if pk_drug_product is not None:
                      where_parts.append('fk_drug_component IN (SELECT pk FROM ref.lnk_dose2drug WHERE fk_drug_product = %(pk_drug_product)s)')

              cmd = """
                      SELECT EXISTS (
                              SELECT 1 FROM clin.substance_intake
                              WHERE
                                      %s
                              LIMIT 1
                      )
              """ % '\nAND\n'.join(where_parts)

              rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}])
              return rows[0][0]

`def substance_intake_exists_by_atc(pk_identity=None, atc=None)`
  Expand source code

      def substance_intake_exists_by_atc(pk_identity=None, atc=None):

              if (atc is None) or (pk_identity is None):
                      raise ValueError('atc and pk_identity cannot be None')

              args = {
                      'pat': pk_identity,
                      'atc': atc
              }
              where_parts = [
                      'pk_patient = %(pat)s',
                      '((atc_substance = %(atc)s) OR (atc_drug = %(atc)s))'
              ]
              cmd = """
                      SELECT EXISTS (
                              SELECT 1 FROM clin.v_intakes
                              WHERE
                                      %s
                              LIMIT 1
                      )
              """ % '\nAND\n'.join(where_parts)

              rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}])
              return rows[0][0]

## Classes

`class cDrugComponent (aPK_obj: Union[int, dict] = None, row: psycopg2.extras.DictRow = None, link_obj=None)`

  Represents business objects in the database.

  ## Rules

  - instances ARE ASSUMED TO EXIST in the database
  - PK construction (aPK_obj): DOES verify its existence on instantiation (fetching data fails)
  - Row construction (row): allowed by using a dict of pairs of field name: field value (PERFORMANCE improvement)
  - does NOT verify FK target existence
  - does NOT create new entries in the database
  - does NOT lazy-fetch fields on access

  Class scope SQL commands and variables:

  _cmd_fetch_payload:

  - must return exactly one row
  - WHERE clause argument values are expected in self.pk_obj (taken from init(aPK_obj))
  - must return xmin of all rows that _cmds_store_payload will be updating, so views must support the xmin columns of their underlying tables

  _cmds_store_payload:

  - one or multiple "update … set … where xmin_ = … and pk = …" statements which actually update the database from the data in self._payload,
  - the last query must refetch at least the XMIN values needed to detect concurrent updates, their field names had better be the same as in _cmd_fetch_payload,
  - the last query CAN return other fields which is particularly useful when those other fields are computed in the backend and may thus change upon save but will not have been set by the client code explicitly - this is only really of concern if the saved subclass is to be reused after saving rather than re-instantiated
  - when subclasses tend to live a while after save_payload() was called and they support computed fields (say, _(some_column) you need to return all columns (see cEncounter)

  _updatable_fields:

  - a list of fields available for update via object['field']

  Call init from child classes like so:

          super().__init__(aPK_obj = aPK_obj, row = row, link_obj = link_obj)

  ## Args

  `aPK_obj`
    retrieve data from backend
  - a simple value the primary key WHERE condition must be a simple column
  - a dictionary of values the primary key WHERE condition must be a subselect consuming the dict and producing the single-value primary key
  `row`
    must hold the fields
  - idx: a dict mapping field names to position
  - data: the field values in a list (as returned by cursor.fetchone() in the DB-API)
  - pk_field: the name of the primary key field OR
  - pk_obj: a dictionary suitable for passed to cursor.execute and holding the primary key values, used for composite PKs
  - for example:

        row = {
                'data': rows[0],
                'idx': idx,
                'pk_field': 'pk_XXX (the PK column name)',
                'pk_obj': {'pk_col1': pk_col1_val, 'pk_col2': pk_col2_val}
        }
        rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = True)
        objects = [ cChildClass(row = {'data': r, 'idx': idx, 'pk_field': 'the PK column name'}) for r in rows ]

  Expand source code

      class cDrugComponent(gmBusinessDBObject.cBusinessDBObject):

              _cmd_fetch_payload = _SQL_get_drug_components % 'pk_component = %s'
              _cmds_store_payload = [
                      """UPDATE ref.lnk_dose2drug SET
                                      fk_drug_product = %(pk_drug_product)s,
                                      fk_dose = %(pk_dose)s
                              WHERE
                                      pk = %(pk_component)s
                                              AND
                                      NOT EXISTS (
                                              SELECT 1
                                              FROM clin.substance_intake
                                              WHERE fk_drug_component = %(pk_component)s
                                              LIMIT 1
                                      )
                                              AND
                                      xmin = %(xmin_lnk_dose2drug)s
                              RETURNING
                                      xmin AS xmin_lnk_dose2drug
                      """
              ]
              _updatable_fields = [
                      'pk_drug_product',
                      'pk_dose'
              ]
              #--------------------------------------------------------
              def format(self, left_margin=0, include_loincs=False):
                      lines = []
                      lines.append('%s %s%s' % (
                              self._payload[self._idx['substance']],
                              self._payload[self._idx['amount']],
                              self.formatted_units
                      ))
                      lines.append(_('Component of %s (%s)') % (
                              self._payload[self._idx['drug_product']],
                              self._payload[self._idx['l10n_preparation']]
                      ))
                      if self._payload[self._idx['is_fake_product']]:
                              lines.append(' ' + _('(not a real drug product)'))

                      if self._payload[self._idx['intake_instructions']] is not None:
                              lines.append(_('Instructions: %s') % self._payload[self._idx['intake_instructions']])
                      if self._payload[self._idx['atc_substance']] is not None:
                              lines.append(_('ATC (substance): %s') % self._payload[self._idx['atc_substance']])
                      if self._payload[self._idx['atc_drug']] is not None:
                              lines.append(_('ATC (drug): %s') % self._payload[self._idx['atc_drug']])
                      if self._payload[self._idx['external_code']] is not None:
                              lines.append('%s: %s' % (
                                      self._payload[self._idx['external_code_type']],
                                      self._payload[self._idx['external_code']]
                              ))

                      if include_loincs:
                              if len(self._payload[self._idx['loincs']]) > 0:
                                      lines.append(_('LOINCs to monitor:'))
                              lines.extend ([
                                      ' %s%s%s' % (
                                              loinc['loinc'],
                                              gmTools.coalesce(loinc['max_age_str'], '', ': ' + _('once within %s')),
                                              gmTools.coalesce(loinc['comment'], '', ' (%s)')
                                      ) for loinc in self._payload[self._idx['loincs']]
                              ])

                      return (' ' * left_margin) + ('\n' + (' ' * left_margin)).join(lines)

              #--------------------------------------------------------
              def exists_as_intake(self, pk_patient=None):
                      return substance_intake_exists (
                              pk_component = self._payload[self._idx['pk_component']],
                              pk_identity = pk_patient
                      )

              #--------------------------------------------------------
              def turn_into_intake(self, emr=None, encounter=None, episode=None):
                      return create_substance_intake (
                              pk_component = self._payload[self._idx['pk_component']],
                              pk_encounter = encounter,
                              pk_episode = episode
                      )

              #--------------------------------------------------------
              # properties
              #--------------------------------------------------------
              def _get_containing_drug(self):
                      return cDrugProduct(aPK_obj = self._payload[self._idx['pk_drug_product']])

              containing_drug = property(_get_containing_drug)

              #--------------------------------------------------------
              def _get_is_in_use_by_patients(self):
                      return self._payload[self._idx['is_in_use']]

              is_in_use_by_patients = property(_get_is_in_use_by_patients)

              #--------------------------------------------------------
              def _get_substance_dose(self):
                      return cSubstanceDose(aPK_obj = self._payload[self._idx['pk_dose']])

              substance_dose =  property(_get_substance_dose)

              #--------------------------------------------------------
              def _get_substance(self):
                      return cSubstance(aPK_obj = self._payload[self._idx['pk_substance']])

              substance =  property(_get_substance)

              #--------------------------------------------------------
              def _get_formatted_units(self, short=True):
                      return format_units (
                              self._payload[self._idx['unit']],
                              self._payload[self._idx['dose_unit']],
                              self._payload[self._idx['l10n_preparation']]
                      )

              formatted_units = property(_get_formatted_units)

  ### Ancestors

  - cBusinessDBObject

  ### Instance variables

  `var containing_drug`
    Expand source code

        def _get_containing_drug(self):
                return cDrugProduct(aPK_obj = self._payload[self._idx['pk_drug_product']])

  `var formatted_units`
    Expand source code

        def _get_formatted_units(self, short=True):
                return format_units (
                        self._payload[self._idx['unit']],
                        self._payload[self._idx['dose_unit']],
                        self._payload[self._idx['l10n_preparation']]
                )

  `var is_in_use_by_patients`
    Expand source code

        def _get_is_in_use_by_patients(self):
                return self._payload[self._idx['is_in_use']]

  `var substance`
    Expand source code

        def _get_substance(self):
                return cSubstance(aPK_obj = self._payload[self._idx['pk_substance']])

  `var substance_dose`
    Expand source code

        def _get_substance_dose(self):
                return cSubstanceDose(aPK_obj = self._payload[self._idx['pk_dose']])

  ### Methods

  `def exists_as_intake(self, pk_patient=None)`
    Expand source code

        def exists_as_intake(self, pk_patient=None):
                return substance_intake_exists (
                        pk_component = self._payload[self._idx['pk_component']],
                        pk_identity = pk_patient
                )

  `def turn_into_intake(self, emr=None, encounter=None, episode=None)`
    Expand source code

        def turn_into_intake(self, emr=None, encounter=None, episode=None):
                return create_substance_intake (
                        pk_component = self._payload[self._idx['pk_component']],
                        pk_encounter = encounter,
                        pk_episode = episode
                )

  ### Inherited members

  - `cBusinessDBObject`:
    - `fields_as_dict`
    - `format`
    - `get_fields`
    - `get_patient`
    - `get_updatable_fields`
    - `is_modified`
    - `patient_pk`
    - `refetch_payload`
    - `same_payload`
    - `save`
    - `save_payload`
    - `staff_id`
`class cDrugComponentMatchProvider (queries=None, context=None)`

  Match provider which searches matches in possibly several database tables.

  queries: - a list of unicode strings - each string is a query - each string must contain: "… WHERE %(fragment_condition)s …" - each string can contain in the where clause: "… %()s …" - each query must return (data, list_label, field_label)

  context definitions to be used in the queries, example: {'ctxt_key1': {'where_part': 'AND country = %(country)s', 'placeholder': 'country'}}

  client code using .set_context() must use the 'placeholder': /.set_context('country', 'Germany')

  full example query:

          query = u" " "
                  SELECT DISTINCT ON (list_label)
                          pk_encounter
                                  AS data,
                          to_char(started, 'YYYY Mon DD (HH24:MI)') || ': ' || l10n_type || ' [#' || pk_encounter || ']'
                                  AS list_label,
                          to_char(started, 'YYYY Mon DD') || ': ' || l10n_type
                                  AS field_label
                  FROM
                          clin.v_pat_encounters
                  WHERE
                          (
                                  l10n_type %(fragment_condition)s
                                          OR
                                  type %(fragment_condition)s
                          )       %(ctxt_patient)s
                  ORDER BY
                          list_label
                  LIMIT
                          30
          " " "
          context = {'ctxt_patient': {
                  'where_part': u'AND pk_patient = %(PLACEHOLDER)s',
                  'placeholder': u'PLACEHOLDER'
          }}
          self.mp = gmMatchProvider.cMatchProvider_SQL2(queries = query, context = context)
          self.set_context(context = 'PLACEHOLDER', val = '<THE VALUE>')

  _SQL_data2match: SQL to retrieve a match by, say, primary key wherein the only keyword argument is 'pk'

  Expand source code

      class cDrugComponentMatchProvider(gmMatchProvider.cMatchProvider_SQL2):

              _pattern = regex.compile(r'^\D+\s*\d+$', regex.UNICODE)

              _query_desc_only = """
                      SELECT DISTINCT ON (list_label)
                              r_vdc1.pk_component
                                      AS data,
                              (r_vdc1.substance || ' '
                                      || r_vdc1.amount || r_vdc1.unit || ' '
                                      || r_vdc1.preparation || ' ('
                                      || r_vdc1.product || ' ['
                                              || (
                                                      SELECT array_to_string(array_agg(r_vdc2.amount), ' / ')
                                                      FROM ref.v_drug_components r_vdc2
                                                      WHERE r_vdc2.pk_drug_product = r_vdc1.pk_drug_product
                                              )
                                      || ']'
                               || ')'
                              )       AS field_label,
                              (r_vdc1.substance || ' '
                                      || r_vdc1.amount || r_vdc1.unit || ' '
                                      || r_vdc1.preparation || ' ('
                                      || r_vdc1.product || ' ['
                                              || (
                                                      SELECT array_to_string(array_agg(r_vdc2.amount), ' / ')
                                                      FROM ref.v_drug_components r_vdc2
                                                      WHERE r_vdc2.pk_drug_product = r_vdc1.pk_drug_product
                                              )
                                      || ']'
                               || ')'
                              )       AS list_label
                      FROM ref.v_drug_components r_vdc1
                      WHERE
                              r_vdc1.substance %(fragment_condition)s
                                      OR
                              r_vdc1.product %(fragment_condition)s
                      ORDER BY list_label
                      LIMIT 50"""

              _query_desc_and_amount = """
                      SELECT DISTINCT ON (list_label)
                              pk_component AS data,
                              (r_vdc1.substance || ' '
                                      || r_vdc1.amount || r_vdc1.unit || ' '
                                      || r_vdc1.preparation || ' ('
                                      || r_vdc1.product || ' ['
                                              || (
                                                      SELECT array_to_string(array_agg(r_vdc2.amount), ' / ')
                                                      FROM ref.v_drug_components r_vdc2
                                                      WHERE r_vdc2.pk_drug_product = r_vdc1.pk_drug_product
                                              )
                                      || ']'
                               || ')'
                              )       AS field_label,
                              (r_vdc1.substance || ' '
                                      || r_vdc1.amount || r_vdc1.unit || ' '
                                      || r_vdc1.preparation || ' ('
                                      || r_vdc1.product || ' ['
                                              || (
                                                      SELECT array_to_string(array_agg(r_vdc2.amount), ' / ')
                                                      FROM ref.v_drug_components r_vdc2
                                                      WHERE r_vdc2.pk_drug_product = r_vdc1.pk_drug_product
                                              )
                                      || ']'
                               || ')'
                              )       AS list_label
                      FROM ref.v_drug_components
                      WHERE
                              %(fragment_condition)s
                      ORDER BY list_label
                      LIMIT 50"""
              #--------------------------------------------------------
              def getMatchesByPhrase(self, aFragment):
                      """Return matches for aFragment at start of phrases."""

                      if cDrugComponentMatchProvider._pattern.match(aFragment):
                              self._queries = [cDrugComponentMatchProvider._query_desc_and_amount]
                              fragment_condition = """(substance ILIKE %(desc)s OR product ILIKE %(desc)s)
                                      AND
                              amount::text ILIKE %(amount)s"""
                              self._args['desc'] = '%s%%' % regex.sub(r'\s*\d+$', '', aFragment)
                              self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                      else:
                              self._queries = [cDrugComponentMatchProvider._query_desc_only]
                              fragment_condition = "ILIKE %(fragment)s"
                              self._args['fragment'] = "%s%%" % aFragment

                      return self._find_matches(fragment_condition)
              #--------------------------------------------------------
              def getMatchesByWord(self, aFragment):
                      """Return matches for aFragment at start of words inside phrases."""

                      if cDrugComponentMatchProvider._pattern.match(aFragment):
                              self._queries = [cDrugComponentMatchProvider._query_desc_and_amount]

                              desc = regex.sub(r'\s*\d+$', '', aFragment)
                              desc = gmPG2.sanitize_pg_regex(expression = desc, escape_all = False)

                              fragment_condition = """(substance ~* %(desc)s OR product ~* %(desc)s)
                                      AND
                              amount::text ILIKE %(amount)s"""

                              self._args['desc'] = "( %s)|(^%s)" % (desc, desc)
                              self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                      else:
                              self._queries = [cDrugComponentMatchProvider._query_desc_only]
                              fragment_condition = "~* %(fragment)s"
                              aFragment = gmPG2.sanitize_pg_regex(expression = aFragment, escape_all = False)
                              self._args['fragment'] = "( %s)|(^%s)" % (aFragment, aFragment)

                      return self._find_matches(fragment_condition)
              #--------------------------------------------------------
              def getMatchesBySubstr(self, aFragment):
                      """Return matches for aFragment as a true substring."""

                      if cDrugComponentMatchProvider._pattern.match(aFragment):
                              self._queries = [cDrugComponentMatchProvider._query_desc_and_amount]
                              fragment_condition = """(substance ILIKE %(desc)s OR product ILIKE %(desc)s)
                                      AND
                              amount::text ILIKE %(amount)s"""
                              self._args['desc'] = '%%%s%%' % regex.sub(r'\s*\d+$', '', aFragment)
                              self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                      else:
                              self._queries = [cDrugComponentMatchProvider._query_desc_only]
                              fragment_condition = "ILIKE %(fragment)s"
                              self._args['fragment'] = "%%%s%%" % aFragment

                      return self._find_matches(fragment_condition)

  ### Ancestors

  - cMatchProvider_SQL2
  - cMatchProvider

  ### Inherited members

  - `cMatchProvider_SQL2`:
    - `getAllMatches`
    - `getMatches`
    - `getMatchesByPhrase`
    - `getMatchesBySubstr`
    - `getMatchesByWord`
    - `setThresholds`
    - `set_context`
`class cDrugProduct (aPK_obj: Union[int, dict] = None, row: psycopg2.extras.DictRow = None, link_obj=None)`

  Represents a drug as marketed by a manufacturer or a generic drug product.

  Call init from child classes like so:

          super().__init__(aPK_obj = aPK_obj, row = row, link_obj = link_obj)

  ## Args

  `aPK_obj`
    retrieve data from backend
  - a simple value the primary key WHERE condition must be a simple column
  - a dictionary of values the primary key WHERE condition must be a subselect consuming the dict and producing the single-value primary key
  `row`
    must hold the fields
  - idx: a dict mapping field names to position
  - data: the field values in a list (as returned by cursor.fetchone() in the DB-API)
  - pk_field: the name of the primary key field OR
  - pk_obj: a dictionary suitable for passed to cursor.execute and holding the primary key values, used for composite PKs
  - for example:

        row = {
                'data': rows[0],
                'idx': idx,
                'pk_field': 'pk_XXX (the PK column name)',
                'pk_obj': {'pk_col1': pk_col1_val, 'pk_col2': pk_col2_val}
        }
        rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = True)
        objects = [ cChildClass(row = {'data': r, 'idx': idx, 'pk_field': 'the PK column name'}) for r in rows ]

  Expand source code

      class cDrugProduct(gmBusinessDBObject.cBusinessDBObject):
              """Represents a drug as marketed by a manufacturer or a generic drug product."""

              _cmd_fetch_payload = _SQL_get_drug_product % 'pk_drug_product = %s'
              _cmds_store_payload = [
                      """UPDATE ref.drug_product SET
                                      description = %(product)s,
                                      preparation = %(preparation)s,
                                      atc_code = gm.nullify_empty_string(%(atc)s),
                                      external_code = gm.nullify_empty_string(%(external_code)s),
                                      external_code_type = gm.nullify_empty_string(%(external_code_type)s),
                                      is_fake = %(is_fake_product)s,
                                      fk_data_source = %(pk_data_source)s
                              WHERE
                                      pk = %(pk_drug_product)s
                                              AND
                                      xmin = %(xmin_drug_product)s
                              RETURNING
                                      xmin AS xmin_drug_product
                      """
              ]
              _updatable_fields = [
                      'drug_product',
                      'preparation',
                      'atc',
                      'is_fake_product',
                      'external_code',
                      'external_code_type',
                      'pk_data_source'
              ]
              #--------------------------------------------------------
              def format(self, left_margin=0, include_component_details=False):
                      lines = []
                      lines.append('%s (%s)' % (
                              self._payload[self._idx['drug_product']],
                              self._payload[self._idx['l10n_preparation']]
                              )
                      )
                      if self._payload[self._idx['atc']] is not None:
                              lines.append('ATC: %s' % self._payload[self._idx['atc']])
                      if self._payload[self._idx['external_code']] is not None:
                              lines.append('%s: %s' % (self._payload[self._idx['external_code_type']], self._payload[self._idx['external_code']]))
                      if len(self._payload[self._idx['components']]) > 0:
                              lines.append(_('Components:'))
                              for comp in self._payload[self._idx['components']]:
                                      lines.append(' %s %s %s' % (
                                              comp['substance'],
                                              comp['amount'],
                                              format_units(comp['unit'], comp['dose_unit'], short = False)
                                      ))
                                      if include_component_details:
                                              if comp['intake_instructions'] is not None:
                                                      lines.append(comp['intake_instructions'])
                                              lines.extend([ '%s%s%s' % (
                                                      l['loinc'],
                                                      gmTools.coalesce(l['max_age_str'], '', ': ' + _('once within %s')),
                                                      gmTools.coalesce(l['comment'], '', ' (%s)')
                                              ) for l in comp['loincs'] ])

                      if self._payload[self._idx['is_fake_product']]:
                              lines.append('')
                              lines.append(_('this is a fake drug product'))
                      if self.is_vaccine:
                              lines.append(_('this is a vaccine'))

                      return (' ' * left_margin) + ('\n' + (' ' * left_margin)).join(lines)

              #--------------------------------------------------------
              def save_payload(self, conn=None):
                      success, data = super().save_payload(conn = conn)

                      if not success:
                              return (success, data)

                      if self._payload[self._idx['atc']] is not None:
                              atc = self._payload[self._idx['atc']].strip()
                              if atc != '':
                                      gmATC.propagate_atc (
                                              link_obj = conn,
                                              substance = self._payload[self._idx['drug_product']].strip(),
                                              atc = atc
                                      )

                      return (success, data)

              #--------------------------------------------------------
              def set_substance_doses_as_components(self, substance_doses=None, link_obj=None):
                      if self.is_in_use_by_patients:
                              return False

                      pk_doses2keep = [ s['pk_dose'] for s in substance_doses ]
                      _log.debug('setting components of "%s" from doses: %s', self._payload[self._idx['drug_product']], pk_doses2keep)

                      args = {'pk_drug_product': self._payload[self._idx['pk_drug_product']]}
                      queries = []
                      # INSERT those which are not there yet
                      cmd = """
                              INSERT INTO ref.lnk_dose2drug (
                                      fk_drug_product,
                                      fk_dose
                              )
                              SELECT
                                      %(pk_drug_product)s,
                                      %(pk_dose)s
                              WHERE NOT EXISTS (
                                      SELECT 1 FROM ref.lnk_dose2drug
                                      WHERE
                                              fk_drug_product = %(pk_drug_product)s
                                                      AND
                                              fk_dose = %(pk_dose)s
                              )"""
                      for pk_dose in pk_doses2keep:
                              args['pk_dose'] = pk_dose
                              queries.append({'cmd': cmd, 'args': args.copy()})

                      # DELETE those that don't belong anymore
                      args['doses2keep'] = pk_doses2keep
                      cmd = """
                              DELETE FROM ref.lnk_dose2drug
                              WHERE
                                      fk_drug_product = %(pk_drug_product)s
                                              AND
                                      fk_dose <> ALL(%(doses2keep)s)"""
                      queries.append({'cmd': cmd, 'args': args})
                      gmPG2.run_rw_queries(link_obj = link_obj, queries = queries)
                      self.refetch_payload(link_obj = link_obj)

                      return True

              #--------------------------------------------------------
              def add_component(self, substance=None, atc=None, amount=None, unit=None, dose_unit=None, pk_dose=None, pk_substance=None):

                      if pk_dose is None:
                              if pk_substance is None:
                                      pk_dose = create_substance_dose(substance = substance, atc = atc, amount = amount, unit = unit, dose_unit = dose_unit)['pk_dose']
                              else:
                                      pk_dose = create_substance_dose(pk_substance = pk_substance, atc = atc, amount = amount, unit = unit, dose_unit = dose_unit)['pk_dose']

                      args = {
                              'pk_dose': pk_dose,
                              'pk_drug_product': self.pk_obj
                      }

                      cmd = """
                              INSERT INTO ref.lnk_dose2drug (fk_drug_product, fk_dose)
                              SELECT
                                      %(pk_drug_product)s,
                                      %(pk_dose)s
                              WHERE NOT EXISTS (
                                      SELECT 1 FROM ref.lnk_dose2drug
                                      WHERE
                                              fk_drug_product = %(pk_drug_product)s
                                                      AND
                                              fk_dose = %(pk_dose)s
                              )"""
                      gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': args}])
                      self.refetch_payload()

              #------------------------------------------------------------
              def remove_component(self, pk_dose=None, pk_component=None):
                      if len(self._payload[self._idx['components']]) == 1:
                              _log.error('will not remove the only component of a drug')
                              return False

                      args = {'pk_drug_product': self.pk_obj, 'pk_dose': pk_dose, 'pk_component': pk_component}

                      if pk_component is None:
                              cmd = """DELETE FROM ref.lnk_dose2drug WHERE
                                                      fk_drug_product = %(pk_drug_product)s
                                                              AND
                                                      fk_dose = %(pk_dose)s
                                                              AND
                                                      NOT EXISTS (
                                                              SELECT 1 FROM clin.v_intakes
                                                              WHERE pk_dose = %(pk_dose)s
                                                              LIMIT 1
                                                      )"""
                      else:
                              cmd = """DELETE FROM ref.lnk_dose2drug WHERE
                                                      pk = %(pk_component)s
                                                              AND
                                                      NOT EXISTS (
                                                              SELECT 1 FROM clin.substance_intake
                                                              WHERE fk_drug_component = %(pk_component)s
                                                              LIMIT 1
                                                      )"""

                      gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': args}])
                      self.refetch_payload()
                      return True

              #--------------------------------------------------------
              def exists_as_intake(self, pk_patient=None):
                      return substance_intake_exists (
                              pk_drug_product = self._payload[self._idx['pk_drug_product']],
                              pk_identity = pk_patient
                      )

              #--------------------------------------------------------
              def turn_into_intake(self, emr=None, encounter=None, episode=None):
                      return create_substance_intake (
                              pk_drug_product = self._payload[self._idx['pk_drug_product']],
                              pk_encounter = encounter,
                              pk_episode = episode
                      )

              #--------------------------------------------------------
              def delete_associated_vaccine(self):
                      if self._payload[self._idx['is_vaccine']] is False:
                              return True

                      args = {'pk_product': self._payload[self._idx['pk_drug_product']]}
                      cmd = """DELETE FROM ref.vaccine
                      WHERE
                              fk_drug_product = %(pk_product)s
                                      AND
                              -- not in use:
                              NOT EXISTS (
                                      SELECT 1 FROM clin.vaccination WHERE fk_vaccine = (
                                              select pk from ref.vaccine where fk_drug_product = %(pk_product)s
                                      )
                              )
                      RETURNING *"""
                      rows, idx = gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = False, return_data = True)
                      if len(rows) == 0:
                              _log.debug('cannot delete vaccine on: %s', self)
                              return False
                      return True

              #--------------------------------------------------------
              # properties
              #--------------------------------------------------------
              def _get_external_code(self):
                      return self._payload[self._idx['external_code']]

              external_code = property(_get_external_code)

              #--------------------------------------------------------
              def _get_external_code_type(self):
                      # FIXME: maybe evaluate fk_data_source ?
                      return self._payload[self._idx['external_code_type']]

              external_code_type = property(_get_external_code_type)

              #--------------------------------------------------------
              def _get_components(self):
                      cmd = _SQL_get_drug_components % 'pk_drug_product = %(product)s'
                      args = {'drug_product': self._payload[self._idx['pk_drug_product']]}
                      rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = True)
                      return [ cDrugComponent(row = {'data': r, 'idx': idx, 'pk_field': 'pk_component'}) for r in rows ]

              components = property(_get_components)

              #--------------------------------------------------------
              def _get_components_as_doses(self):
                      pk_doses = [ c['pk_dose'] for c in self._payload[self._idx['components']] ]
                      if len(pk_doses) == 0:
                              return []
                      cmd = _SQL_get_substance_dose % 'pk_dose = ANY(%(pks)s)'
                      args = {'pks': pk_doses}
                      rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = True)
                      return [ cSubstanceDose(row = {'data': r, 'idx': idx, 'pk_field': 'pk_dose'}) for r in rows ]

              components_as_doses = property(_get_components_as_doses)

              #--------------------------------------------------------
              def _get_components_as_substances(self):
                      pk_substances = [ c['pk_substance'] for c in self._payload[self._idx['components']] ]
                      if len(pk_substances) == 0:
                              return []
                      cmd = _SQL_get_substance % 'pk_substance = ANY(%(pks)s)'
                      args = {'pks': pk_substances}
                      rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = True)
                      return [ cSubstance(row = {'data': r, 'idx': idx, 'pk_field': 'pk_substance'}) for r in rows ]

              components_as_substances = property(_get_components_as_substances)

              #--------------------------------------------------------
              def _get_is_fake_product(self):
                      return self._payload[self._idx['is_fake_product']]

              is_fake_product = property(_get_is_fake_product)

              #--------------------------------------------------------
              def _get_is_vaccine(self):
                      return self._payload[self._idx['is_vaccine']]

              is_vaccine = property(_get_is_vaccine)

              #--------------------------------------------------------
              def _get_is_in_use_by_patients(self):
                      cmd = """
                              SELECT EXISTS (
                                      SELECT 1 FROM clin.substance_intake WHERE
                                              fk_drug_component IN (
                                                      SELECT pk FROM ref.lnk_dose2drug WHERE fk_drug_product = %(pk)s
                                              )
                                      LIMIT 1
                              )"""
                      args = {'pk': self.pk_obj}
                      rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = False)
                      return rows[0][0]

              is_in_use_by_patients = property(_get_is_in_use_by_patients)

              #--------------------------------------------------------
              def _get_is_in_use_as_vaccine(self):
                      if self._payload[self._idx['is_vaccine']] is False:
                              return False
                      cmd = 'SELECT EXISTS(SELECT 1 FROM clin.vaccination WHERE fk_vaccine = (select pk from ref.vaccine where fk_drug_product = %(pk)s))'
                      args = {'pk': self.pk_obj}
                      rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = False)
                      return rows[0][0]

              is_in_use_as_vaccine = property(_get_is_in_use_as_vaccine)

  ### Ancestors

  - cBusinessDBObject

  ### Instance variables

  `var components`
    Expand source code

        def _get_components(self):
                cmd = _SQL_get_drug_components % 'pk_drug_product = %(product)s'
                args = {'drug_product': self._payload[self._idx['pk_drug_product']]}
                rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = True)
                return [ cDrugComponent(row = {'data': r, 'idx': idx, 'pk_field': 'pk_component'}) for r in rows ]

  `var components_as_doses`
    Expand source code

        def _get_components_as_doses(self):
                pk_doses = [ c['pk_dose'] for c in self._payload[self._idx['components']] ]
                if len(pk_doses) == 0:
                        return []
                cmd = _SQL_get_substance_dose % 'pk_dose = ANY(%(pks)s)'
                args = {'pks': pk_doses}
                rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = True)
                return [ cSubstanceDose(row = {'data': r, 'idx': idx, 'pk_field': 'pk_dose'}) for r in rows ]

  `var components_as_substances`
    Expand source code

        def _get_components_as_substances(self):
                pk_substances = [ c['pk_substance'] for c in self._payload[self._idx['components']] ]
                if len(pk_substances) == 0:
                        return []
                cmd = _SQL_get_substance % 'pk_substance = ANY(%(pks)s)'
                args = {'pks': pk_substances}
                rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = True)
                return [ cSubstance(row = {'data': r, 'idx': idx, 'pk_field': 'pk_substance'}) for r in rows ]

  `var external_code`
    Expand source code

        def _get_external_code(self):
                return self._payload[self._idx['external_code']]

  `var external_code_type`
    Expand source code

        def _get_external_code_type(self):
                # FIXME: maybe evaluate fk_data_source ?
                return self._payload[self._idx['external_code_type']]

  `var is_fake_product`
    Expand source code

        def _get_is_fake_product(self):
                return self._payload[self._idx['is_fake_product']]

  `var is_in_use_as_vaccine`
    Expand source code

        def _get_is_in_use_as_vaccine(self):
                if self._payload[self._idx['is_vaccine']] is False:
                        return False
                cmd = 'SELECT EXISTS(SELECT 1 FROM clin.vaccination WHERE fk_vaccine = (select pk from ref.vaccine where fk_drug_product = %(pk)s))'
                args = {'pk': self.pk_obj}
                rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = False)
                return rows[0][0]

  `var is_in_use_by_patients`
    Expand source code

        def _get_is_in_use_by_patients(self):
                cmd = """
                        SELECT EXISTS (
                                SELECT 1 FROM clin.substance_intake WHERE
                                        fk_drug_component IN (
                                                SELECT pk FROM ref.lnk_dose2drug WHERE fk_drug_product = %(pk)s
                                        )
                                LIMIT 1
                        )"""
                args = {'pk': self.pk_obj}
                rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = False)
                return rows[0][0]

  `var is_vaccine`
    Expand source code

        def _get_is_vaccine(self):
                return self._payload[self._idx['is_vaccine']]

  ### Methods

  `def add_component(self, substance=None, atc=None, amount=None, unit=None, dose_unit=None, pk_dose=None, pk_substance=None)`
    Expand source code

        def add_component(self, substance=None, atc=None, amount=None, unit=None, dose_unit=None, pk_dose=None, pk_substance=None):

                if pk_dose is None:
                        if pk_substance is None:
                                pk_dose = create_substance_dose(substance = substance, atc = atc, amount = amount, unit = unit, dose_unit = dose_unit)['pk_dose']
                        else:
                                pk_dose = create_substance_dose(pk_substance = pk_substance, atc = atc, amount = amount, unit = unit, dose_unit = dose_unit)['pk_dose']

                args = {
                        'pk_dose': pk_dose,
                        'pk_drug_product': self.pk_obj
                }

                cmd = """
                        INSERT INTO ref.lnk_dose2drug (fk_drug_product, fk_dose)
                        SELECT
                                %(pk_drug_product)s,
                                %(pk_dose)s
                        WHERE NOT EXISTS (
                                SELECT 1 FROM ref.lnk_dose2drug
                                WHERE
                                        fk_drug_product = %(pk_drug_product)s
                                                AND
                                        fk_dose = %(pk_dose)s
                        )"""
                gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': args}])
                self.refetch_payload()

  `def delete_associated_vaccine(self)`
    Expand source code

        def delete_associated_vaccine(self):
                if self._payload[self._idx['is_vaccine']] is False:
                        return True

                args = {'pk_product': self._payload[self._idx['pk_drug_product']]}
                cmd = """DELETE FROM ref.vaccine
                WHERE
                        fk_drug_product = %(pk_product)s
                                AND
                        -- not in use:
                        NOT EXISTS (
                                SELECT 1 FROM clin.vaccination WHERE fk_vaccine = (
                                        select pk from ref.vaccine where fk_drug_product = %(pk_product)s
                                )
                        )
                RETURNING *"""
                rows, idx = gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = False, return_data = True)
                if len(rows) == 0:
                        _log.debug('cannot delete vaccine on: %s', self)
                        return False
                return True

  `def exists_as_intake(self, pk_patient=None)`
    Expand source code

        def exists_as_intake(self, pk_patient=None):
                return substance_intake_exists (
                        pk_drug_product = self._payload[self._idx['pk_drug_product']],
                        pk_identity = pk_patient
                )

  `def remove_component(self, pk_dose=None, pk_component=None)`
    Expand source code

        def remove_component(self, pk_dose=None, pk_component=None):
                if len(self._payload[self._idx['components']]) == 1:
                        _log.error('will not remove the only component of a drug')
                        return False

                args = {'pk_drug_product': self.pk_obj, 'pk_dose': pk_dose, 'pk_component': pk_component}

                if pk_component is None:
                        cmd = """DELETE FROM ref.lnk_dose2drug WHERE
                                                fk_drug_product = %(pk_drug_product)s
                                                        AND
                                                fk_dose = %(pk_dose)s
                                                        AND
                                                NOT EXISTS (
                                                        SELECT 1 FROM clin.v_intakes
                                                        WHERE pk_dose = %(pk_dose)s
                                                        LIMIT 1
                                                )"""
                else:
                        cmd = """DELETE FROM ref.lnk_dose2drug WHERE
                                                pk = %(pk_component)s
                                                        AND
                                                NOT EXISTS (
                                                        SELECT 1 FROM clin.substance_intake
                                                        WHERE fk_drug_component = %(pk_component)s
                                                        LIMIT 1
                                                )"""

                gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': args}])
                self.refetch_payload()
                return True

  `def set_substance_doses_as_components(self, substance_doses=None, link_obj=None)`
    Expand source code

        def set_substance_doses_as_components(self, substance_doses=None, link_obj=None):
                if self.is_in_use_by_patients:
                        return False

                pk_doses2keep = [ s['pk_dose'] for s in substance_doses ]
                _log.debug('setting components of "%s" from doses: %s', self._payload[self._idx['drug_product']], pk_doses2keep)

                args = {'pk_drug_product': self._payload[self._idx['pk_drug_product']]}
                queries = []
                # INSERT those which are not there yet
                cmd = """
                        INSERT INTO ref.lnk_dose2drug (
                                fk_drug_product,
                                fk_dose
                        )
                        SELECT
                                %(pk_drug_product)s,
                                %(pk_dose)s
                        WHERE NOT EXISTS (
                                SELECT 1 FROM ref.lnk_dose2drug
                                WHERE
                                        fk_drug_product = %(pk_drug_product)s
                                                AND
                                        fk_dose = %(pk_dose)s
                        )"""
                for pk_dose in pk_doses2keep:
                        args['pk_dose'] = pk_dose
                        queries.append({'cmd': cmd, 'args': args.copy()})

                # DELETE those that don't belong anymore
                args['doses2keep'] = pk_doses2keep
                cmd = """
                        DELETE FROM ref.lnk_dose2drug
                        WHERE
                                fk_drug_product = %(pk_drug_product)s
                                        AND
                                fk_dose <> ALL(%(doses2keep)s)"""
                queries.append({'cmd': cmd, 'args': args})
                gmPG2.run_rw_queries(link_obj = link_obj, queries = queries)
                self.refetch_payload(link_obj = link_obj)

                return True

  `def turn_into_intake(self, emr=None, encounter=None, episode=None)`
    Expand source code

        def turn_into_intake(self, emr=None, encounter=None, episode=None):
                return create_substance_intake (
                        pk_drug_product = self._payload[self._idx['pk_drug_product']],
                        pk_encounter = encounter,
                        pk_episode = episode
                )

  ### Inherited members

  - `cBusinessDBObject`:
    - `fields_as_dict`
    - `format`
    - `get_fields`
    - `get_patient`
    - `get_updatable_fields`
    - `is_modified`
    - `patient_pk`
    - `refetch_payload`
    - `same_payload`
    - `save`
    - `save_payload`
    - `staff_id`
`class cIntakeRegimen (aPK_obj: Union[int, dict] = None, row: psycopg2.extras.DictRow = None, link_obj=None)`

  Represents an intake regimen, either active or inactive.

  Call init from child classes like so:

          super().__init__(aPK_obj = aPK_obj, row = row, link_obj = link_obj)

  ## Args

  `aPK_obj`
    retrieve data from backend
  - a simple value the primary key WHERE condition must be a simple column
  - a dictionary of values the primary key WHERE condition must be a subselect consuming the dict and producing the single-value primary key
  `row`
    must hold the fields
  - idx: a dict mapping field names to position
  - data: the field values in a list (as returned by cursor.fetchone() in the DB-API)
  - pk_field: the name of the primary key field OR
  - pk_obj: a dictionary suitable for passed to cursor.execute and holding the primary key values, used for composite PKs
  - for example:

        row = {
                'data': rows[0],
                'idx': idx,
                'pk_field': 'pk_XXX (the PK column name)',
                'pk_obj': {'pk_col1': pk_col1_val, 'pk_col2': pk_col2_val}
        }
        rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = True)
        objects = [ cChildClass(row = {'data': r, 'idx': idx, 'pk_field': 'the PK column name'}) for r in rows ]

  Expand source code

      class cIntakeRegimen(gmBusinessDBObject.cBusinessDBObject):
              """Represents an intake regimen, either active or inactive."""

              _cmd_fetch_payload = _SQL_get_intake_regimen % 'pk_intake_regimen = %s'
              _cmds_store_payload = [
                      """ UPDATE clin.intake_regimen SET
                                      clin_when = %(started)s,
                                      comment_on_start = gm.nullify_empty_string(%(comment_on_start)s),
                                      planned_duration = %(planned_duration)s,
                                      discontinued = %(discontinued)s,
                                      discontinue_reason = gm.nullify_empty_string(%(discontinue_reason)s),
                                      narrative = gm.nullify_empty_string(%(schedule)s),
                                      fk_encounter = %(pk_encounter)s,
                                      fk_episode = %(pk_episode)s,
                                      fk_dose = %(pk_dose)s,
                                      fk_drug_product = %(pk_drug_product)s,
                                      fk_intake = %(pk_intake)s
                              WHERE
                                      pk = %(pk_intake_regimen)s
                                              AND
                                      xmin = %(xmin_intake_regimen)s
                              RETURNING
                                      xmin AS xmin_intake_regimen
                                      -- also return columns which are calculated in the view used by
                                      -- the initial SELECT such that they will further on contain their
                                      -- updated value:
                                      --, ...
                      """
              ]
              # view columns that can be updated:
              _updatable_fields = [
                      'started',
                      'comment_on_start',
                      'planned_duration',
                      'discontinued',
                      'discontinue_reason',
                      'pk_encounter',
                      'pk_episode',
                      'pk_dose',
                      'pk_drug_product',
                      'pk_intake',
                      'schedule'
              ]
              #--------------------------------------------------------
      #       def format(self):
      #               return u'%s' % self

              #--------------------------------------------------------
              def _get_parsed_schedule(self):
                      tests = [
                              # lead, trail
                              '       1-1-1-1 ',
                              # leading dose
                              '1-1-1-1',
                              '22-1-1-1',
                              '1/3-1-1-1',
                              '/4-1-1-1'
                      ]
                      pattern = "^(\d\d|/\d|\d/\d|\d)[\s-]{1,5}\d{0,2}[\s-]{1,5}\d{0,2}[\s-]{1,5}\d{0,2}$"
                      for test in tests:
                              print(test.strip(), ":", regex.match(pattern, test.strip()))

  ### Ancestors

  - cBusinessDBObject

  ### Inherited members

  - `cBusinessDBObject`:
    - `fields_as_dict`
    - `format`
    - `get_fields`
    - `get_patient`
    - `get_updatable_fields`
    - `is_modified`
    - `patient_pk`
    - `refetch_payload`
    - `same_payload`
    - `save`
    - `save_payload`
    - `staff_id`
`class cProductOrSubstanceMatchProvider (queries=None, context=None)`

  Match provider which searches matches in possibly several database tables.

  queries: - a list of unicode strings - each string is a query - each string must contain: "… WHERE %(fragment_condition)s …" - each string can contain in the where clause: "… %()s …" - each query must return (data, list_label, field_label)

  context definitions to be used in the queries, example: {'ctxt_key1': {'where_part': 'AND country = %(country)s', 'placeholder': 'country'}}

  client code using .set_context() must use the 'placeholder': /.set_context('country', 'Germany')

  full example query:

          query = u" " "
                  SELECT DISTINCT ON (list_label)
                          pk_encounter
                                  AS data,
                          to_char(started, 'YYYY Mon DD (HH24:MI)') || ': ' || l10n_type || ' [#' || pk_encounter || ']'
                                  AS list_label,
                          to_char(started, 'YYYY Mon DD') || ': ' || l10n_type
                                  AS field_label
                  FROM
                          clin.v_pat_encounters
                  WHERE
                          (
                                  l10n_type %(fragment_condition)s
                                          OR
                                  type %(fragment_condition)s
                          )       %(ctxt_patient)s
                  ORDER BY
                          list_label
                  LIMIT
                          30
          " " "
          context = {'ctxt_patient': {
                  'where_part': u'AND pk_patient = %(PLACEHOLDER)s',
                  'placeholder': u'PLACEHOLDER'
          }}
          self.mp = gmMatchProvider.cMatchProvider_SQL2(queries = query, context = context)
          self.set_context(context = 'PLACEHOLDER', val = '<THE VALUE>')

  _SQL_data2match: SQL to retrieve a match by, say, primary key wherein the only keyword argument is 'pk'

  Expand source code

      class cProductOrSubstanceMatchProvider(gmMatchProvider.cMatchProvider_SQL2):

              # by product name
              _query_drug_product_by_name = """
                      SELECT
                              ARRAY[1, pk]::INTEGER[]
                                      AS data,
                              (description || ' (' || preparation || ')' || coalesce(' [' || atc_code || ']', ''))
                                      AS list_label,
                              (description || ' (' || preparation || ')' || coalesce(' [' || atc_code || ']', ''))
                                      AS field_label,
                              1 AS rank
                      FROM ref.drug_product
                      WHERE description %(fragment_condition)s
                      LIMIT 50
              """
              _query_drug_product_by_name_and_strength = """
                      SELECT
                              ARRAY[1, pk_drug_product]::INTEGER[]
                                      AS data,
                              (product || ' (' || preparation || ' %s ' || amount || unit || coalesce('/' || dose_unit, '') || ' ' || substance || ')' || coalesce(' [' || atc_drug || ']', ''))
                                      AS list_label,
                              (product || ' (' || preparation || ' %s ' || amount || unit || coalesce('/' || dose_unit, '') || ' ' || substance || ')' || coalesce(' [' || atc_drug || ']', ''))
                                      AS field_label,
                              1 AS rank
                      FROM
                              (SELECT *, product AS description FROM ref.v_drug_components) AS _components
                      WHERE %%(fragment_condition)s
                      LIMIT 50
              """ % (
                      _('w/'),
                      _('w/')
              )

              # by component
      #       _query_component_by_name = u"""
      #               SELECT
      #                       ARRAY[3, r_vdc1.pk_component]::INTEGER[]
      #                               AS data,
      #                       (r_vdc1.substance || ' ' || r_vdc1.amount || r_vdc1.unit || ' ' || r_vdc1.preparation || ' ('
      #                               || r_vdc1.product || ' ['
      #                                       || (
      #                                               SELECT array_to_string(array_agg(r_vdc2.amount), ' / ')
      #                                               FROM ref.v_drug_components r_vdc2
      #                                               WHERE r_vdc2.pk_drug_product = r_vdc1.pk_drug_product
      #                                       )
      #                               || ']'
      #                       || ')'
      #                       )       AS field_label,
      #                       (r_vdc1.substance || ' ' || r_vdc1.amount || r_vdc1.unit || ' ' || r_vdc1.preparation || ' ('
      #                               || r_vdc1.product || ' ['
      #                                       || (
      #                                               SELECT array_to_string(array_agg(r_vdc2.amount), ' / ')
      #                                               FROM ref.v_drug_components r_vdc2
      #                                               WHERE r_vdc2.pk_drug_product = r_vdc1.pk_drug_product
      #                                       )
      #                               || ']'
      #                       || ')'
      #                       )       AS list_label,
      #                       1 AS rank
      #               FROM
      #                       (SELECT *, product AS description FROM ref.v_drug_components) AS r_vdc1
      #               WHERE
      #                       r_vdc1.substance %(fragment_condition)s
      #               LIMIT 50"""

      #       _query_component_by_name_and_strength = u"""
      #               SELECT
      #                       ARRAY[3, r_vdc1.pk_component]::INTEGER[]
      #                               AS data,
      #                       (r_vdc1.substance || ' ' || r_vdc1.amount || r_vdc1.unit || ' ' || r_vdc1.preparation || ' ('
      #                               || r_vdc1.product || ' ['
      #                                       || (
      #                                               SELECT array_to_string(array_agg(r_vdc2.amount), ' / ')
      #                                               FROM ref.v_drug_components r_vdc2
      #                                               WHERE r_vdc2.pk_drug_product = r_vdc1.pk_drug_product
      #                                       )
      #                               || ']'
      #                       || ')'
      #                       )       AS field_label,
      #                       (r_vdc1.substance || ' ' || r_vdc1.amount || r_vdc1.unit || ' ' || r_vdc1.preparation || ' ('
      #                               || r_vdc1.product || ' ['
      #                                       || (
      #                                               SELECT array_to_string(array_agg(r_vdc2.amount), ' / ')
      #                                               FROM ref.v_drug_components r_vdc2
      #                                               WHERE r_vdc2.pk_drug_product = r_vdc1.pk_drug_product
      #                                       )
      #                               || ']'
      #                       || ')'
      #                       )       AS list_label,
      #                       1 AS rank
      #               FROM (SELECT *, substance AS description FROM ref.v_drug_components) AS r_vdc1
      #               WHERE
      #                       %(fragment_condition)s
      #               ORDER BY list_label
      #               LIMIT 50"""

              # by substance name in doses
              _query_substance_by_name = """
                      SELECT
                              data,
                              field_label,
                              list_label,
                              rank
                      FROM ((
                              -- first: substance intakes which match, because we tend to reuse them often
                              SELECT
                                      ARRAY[2, pk_substance]::INTEGER[] AS data,
                                      (description || ' ' || amount || unit || coalesce('/' || dose_unit, '')) AS field_label,
                                      (description || ' ' || amount || unit || coalesce('/' || dose_unit, '') || ' (%s)') AS list_label,
                                      1 AS rank
                              FROM (
                                      SELECT DISTINCT ON (description, amount, unit, dose_unit)
                                              pk_substance,
                                              substance AS description,
                                              amount,
                                              unit,
                                              dose_unit
                                      FROM clin.v_intakes
                              ) AS normalized_intakes
                              WHERE description %%(fragment_condition)s

                      ) UNION ALL (
      xxxxxxxxxxxxxxxxxxxxxxxxxxxx
                              -- second: consumable substances which match but are not intakes
                              SELECT
                                      ARRAY[2, pk]::INTEGER[] AS data,
                                      (description || ' ' || amount || ' ' || unit) AS field_label,
                                      (description || ' ' || amount || ' ' || unit) AS list_label,
                                      2 AS rank
                              FROM ref.consumable_substance
                              WHERE
                                      description %%(fragment_condition)s
                                              AND
                                      pk NOT IN (
                                              SELECT fk_substance
                                              FROM clin.substance_intake
                                              WHERE fk_substance IS NOT NULL
                                      )
                      )) AS candidates
                      --ORDER BY rank, list_label
                      LIMIT 50""" % _('in use')

              _query_substance_by_name_and_strength =         """
                      SELECT
                              data,
                              field_label,
                              list_label,
                              rank
                      FROM ((
                              SELECT
                                      ARRAY[2, pk_substance]::INTEGER[] AS data,
                                      (description || ' ' || amount || ' ' || unit) AS field_label,
                                      (description || ' ' || amount || ' ' || unit || ' (%s)') AS list_label,
                                      1 AS rank
                              FROM (
                                      SELECT DISTINCT ON (description, amount, unit)
                                              pk_substance,
                                              substance AS description,
                                              amount,
                                              unit
                                      FROM clin.v_nonbraXXXnd_intakes
                              ) AS normalized_intakes
                              WHERE
                                      %%(fragment_condition)s

                      ) UNION ALL (

                              -- matching substances which are not in intakes
                              SELECT
                                      ARRAY[2, pk]::INTEGER[] AS data,
                                      (description || ' ' || amount || ' ' || unit) AS field_label,
                                      (description || ' ' || amount || ' ' || unit) AS list_label,
                                      2 AS rank
                              FROM ref.consumable_substance
                              WHERE
                                      %%(fragment_condition)s
                                              AND
                                      pk NOT IN (
                                              SELECT fk_substance
                                              FROM clin.substance_intake
                                              WHERE fk_substance IS NOT NULL
                                      )
                      )) AS candidates
                      --ORDER BY rank, list_label
                      LIMIT 50""" % _('in use')

              _pattern = regex.compile(r'^\D+\s*\d+$', regex.UNICODE)

              _master_query = """
                      SELECT
                              data, field_label, list_label, rank
                      FROM ((%s) UNION (%s) UNION (%s))
                              AS _union
                      ORDER BY rank, list_label
                      LIMIT 50
              """
              #--------------------------------------------------------
              def getMatchesByPhrase(self, aFragment):
                      """Return matches for aFragment at start of phrases."""

                      if cProductOrSubstanceMatchProvider._pattern.match(aFragment):
                              self._queries = [
                                      cProductOrSubstanceMatchProvider._master_query % (
                                              cProductOrSubstanceMatchProvider._query_drug_product_by_name_and_strength,
                                              cProductOrSubstanceMatchProvider._query_substance_by_name_and_strength,
                                              cProductOrSubstanceMatchProvider._query_component_by_name_and_strength
                                      )
                              ]
                              #self._queries = [cProductOrSubstanceMatchProvider._query_substance_by_name_and_strength]
                              fragment_condition = """description ILIKE %(desc)s
                                      AND
                              amount::text ILIKE %(amount)s"""
                              self._args['desc'] = '%s%%' % regex.sub(r'\s*\d+$', '', aFragment)
                              self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                      else:
                              self._queries = [
                                      cProductOrSubstanceMatchProvider._master_query % (
                                              cProductOrSubstanceMatchProvider._query_drug_product_by_name,
                                              cProductOrSubstanceMatchProvider._query_substance_by_name,
                                              cProductOrSubstanceMatchProvider._query_component_by_name
                                      )
                              ]
                              #self._queries = [cProductOrSubstanceMatchProvider._query_substance_by_name]
                              fragment_condition = "ILIKE %(fragment)s"
                              self._args['fragment'] = "%s%%" % aFragment

                      return self._find_matches(fragment_condition)

              #--------------------------------------------------------
              def getMatchesByWord(self, aFragment):
                      """Return matches for aFragment at start of words inside phrases."""

                      if cProductOrSubstanceMatchProvider._pattern.match(aFragment):
                              self._queries = [
                                      cProductOrSubstanceMatchProvider._master_query % (
                                              cProductOrSubstanceMatchProvider._query_drug_product_by_name_and_strength,
                                              cProductOrSubstanceMatchProvider._query_substance_by_name_and_strength,
                                              cProductOrSubstanceMatchProvider._query_component_by_name_and_strength
                                      )
                              ]
                              #self._queries = [cProductOrSubstanceMatchProvider._query_substance_by_name_and_strength]

                              desc = regex.sub(r'\s*\d+$', '', aFragment)
                              desc = gmPG2.sanitize_pg_regex(expression = desc, escape_all = False)

                              fragment_condition = """description ~* %(desc)s
                                      AND
                              amount::text ILIKE %(amount)s"""

                              self._args['desc'] = "( %s)|(^%s)" % (desc, desc)
                              self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                      else:
                              self._queries = [
                                      cProductOrSubstanceMatchProvider._master_query % (
                                              cProductOrSubstanceMatchProvider._query_drug_product_by_name,
                                              cProductOrSubstanceMatchProvider._query_substance_by_name,
                                              cProductOrSubstanceMatchProvider._query_component_by_name
                                      )
                              ]
                              #self._queries = [cProductOrSubstanceMatchProvider._query_substance_by_name]
                              fragment_condition = "~* %(fragment)s"
                              aFragment = gmPG2.sanitize_pg_regex(expression = aFragment, escape_all = False)
                              self._args['fragment'] = "( %s)|(^%s)" % (aFragment, aFragment)

                      return self._find_matches(fragment_condition)

              #--------------------------------------------------------
              def getMatchesBySubstr(self, aFragment):
                      """Return matches for aFragment as a true substring."""

                      if cProductOrSubstanceMatchProvider._pattern.match(aFragment):
                              self._queries = [
                                      cProductOrSubstanceMatchProvider._master_query % (
                                              cProductOrSubstanceMatchProvider._query_drug_product_by_name_and_strength,
                                              cProductOrSubstanceMatchProvider._query_substance_by_name_and_strength,
                                              cProductOrSubstanceMatchProvider._query_component_by_name_and_strength
                                      )
                              ]
                              #self._queries = [cProductOrSubstanceMatchProvider._query_substance_by_name_and_strength]
                              fragment_condition = """description ILIKE %(desc)s
                                      AND
                              amount::text ILIKE %(amount)s"""
                              self._args['desc'] = '%%%s%%' % regex.sub(r'\s*\d+$', '', aFragment)
                              self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                      else:
                              self._queries = [
                                      cProductOrSubstanceMatchProvider._master_query % (
                                              cProductOrSubstanceMatchProvider._query_drug_product_by_name,
                                              cProductOrSubstanceMatchProvider._query_substance_by_name,
                                              cProductOrSubstanceMatchProvider._query_component_by_name
                                      )
                              ]
                              #self._queries = [cProductOrSubstanceMatchProvider._query_substance_by_name]
                              fragment_condition = "ILIKE %(fragment)s"
                              self._args['fragment'] = "%%%s%%" % aFragment

                      return self._find_matches(fragment_condition)

  ### Ancestors

  - cMatchProvider_SQL2
  - cMatchProvider

  ### Inherited members

  - `cMatchProvider_SQL2`:
    - `getAllMatches`
    - `getMatches`
    - `getMatchesByPhrase`
    - `getMatchesBySubstr`
    - `getMatchesByWord`
    - `setThresholds`
    - `set_context`
`class cSubstance (aPK_obj: Union[int, dict] = None, row: psycopg2.extras.DictRow = None, link_obj=None)`

  Represents business objects in the database.

  ## Rules

  - instances ARE ASSUMED TO EXIST in the database
  - PK construction (aPK_obj): DOES verify its existence on instantiation (fetching data fails)
  - Row construction (row): allowed by using a dict of pairs of field name: field value (PERFORMANCE improvement)
  - does NOT verify FK target existence
  - does NOT create new entries in the database
  - does NOT lazy-fetch fields on access

  Class scope SQL commands and variables:

  _cmd_fetch_payload:

  - must return exactly one row
  - WHERE clause argument values are expected in self.pk_obj (taken from init(aPK_obj))
  - must return xmin of all rows that _cmds_store_payload will be updating, so views must support the xmin columns of their underlying tables

  _cmds_store_payload:

  - one or multiple "update … set … where xmin_ = … and pk = …" statements which actually update the database from the data in self._payload,
  - the last query must refetch at least the XMIN values needed to detect concurrent updates, their field names had better be the same as in _cmd_fetch_payload,
  - the last query CAN return other fields which is particularly useful when those other fields are computed in the backend and may thus change upon save but will not have been set by the client code explicitly - this is only really of concern if the saved subclass is to be reused after saving rather than re-instantiated
  - when subclasses tend to live a while after save_payload() was called and they support computed fields (say, _(some_column) you need to return all columns (see cEncounter)

  _updatable_fields:

  - a list of fields available for update via object['field']

  Call init from child classes like so:

          super().__init__(aPK_obj = aPK_obj, row = row, link_obj = link_obj)

  ## Args

  `aPK_obj`
    retrieve data from backend
  - a simple value the primary key WHERE condition must be a simple column
  - a dictionary of values the primary key WHERE condition must be a subselect consuming the dict and producing the single-value primary key
  `row`
    must hold the fields
  - idx: a dict mapping field names to position
  - data: the field values in a list (as returned by cursor.fetchone() in the DB-API)
  - pk_field: the name of the primary key field OR
  - pk_obj: a dictionary suitable for passed to cursor.execute and holding the primary key values, used for composite PKs
  - for example:

        row = {
                'data': rows[0],
                'idx': idx,
                'pk_field': 'pk_XXX (the PK column name)',
                'pk_obj': {'pk_col1': pk_col1_val, 'pk_col2': pk_col2_val}
        }
        rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = True)
        objects = [ cChildClass(row = {'data': r, 'idx': idx, 'pk_field': 'the PK column name'}) for r in rows ]

  Expand source code

      class cSubstance(gmBusinessDBObject.cBusinessDBObject):

              _cmd_fetch_payload = _SQL_get_substance % "pk_substance = %s"
              _cmds_store_payload = [
                      """UPDATE ref.substance SET
                                      description = %(substance)s,
                                      atc = gm.nullify_empty_string(%(atc)s),
                                      intake_instructions = gm.nullify_empty_string(%(intake_instructions)s)
                              WHERE
                                      pk = %(pk_substance)s
                                              AND
                                      xmin = %(xmin_substance)s
                              RETURNING
                                      xmin AS xmin_substance
                      """
              ]
              _updatable_fields = [
                      'substance',
                      'atc',
                      'intake_instructions'
              ]
              #--------------------------------------------------------
              def format(self, left_margin=0):
                      if len(self._payload[self._idx['loincs']]) == 0:
                              loincs = ''
                      else:
                              loincs = """
      %s %s
      %s  %s"""       % (
                                      (' ' * left_margin),
                                      _('LOINCs to monitor:'),
                                      (' ' * left_margin),
                                      ('\n' + (' ' * (left_margin + 1))).join ([
                                              '%s%s%s' % (
                                                      l['loinc'],
                                                      gmTools.coalesce(l['max_age_str'], '', ': ' + _('once within %s')),
                                                      gmTools.coalesce(l['comment'], '', ' (%s)')
                                              ) for l in self._payload[self._idx['loincs']]
                                      ])
                              )
                      return (' ' * left_margin) + '%s: %s%s%s%s' % (
                              _('Substance'),
                              self._payload[self._idx['substance']],
                              gmTools.coalesce(self._payload[self._idx['atc']], '', ' [%s]'),
                              gmTools.coalesce(self._payload[self._idx['intake_instructions']], '', _('\n Instructions: %s')),
                              loincs
                      )

              #--------------------------------------------------------
              def save_payload(self, conn=None):
                      success, data = super().save_payload(conn = conn)
                      if not success:
                              return (success, data)

                      if self._payload[self._idx['atc']] is not None:
                              atc = self._payload[self._idx['atc']].strip()
                              if atc != '':
                                      gmATC.propagate_atc (
                                              substance = self._payload[self._idx['substance']].strip(),
                                              atc = atc
                                      )
                      return (success, data)

              #--------------------------------------------------------
              def exists_as_intake(self, pk_patient=None):
                      return substance_intake_exists (
                              pk_substance = self.pk_obj,
                              pk_identity = pk_patient
                      )

              #--------------------------------------------------------
              # properties
              #--------------------------------------------------------
              def _set_loincs(self, loincs):
                      args = {'pk_subst': self.pk_obj, 'loincs': loincs}
                      # insert new entries
                      for loinc in loincs:
                              cmd = """INSERT INTO ref.lnk_loinc2substance (fk_substance, loinc)
                              SELECT
                                      %(pk_subst)s, %(loinc)s
                              WHERE NOT EXISTS (
                                      SELECT 1 from ref.lnk_loinc2substance WHERE fk_substance = %(pk_subst)s AND loinc = %(loinc)s
                              )"""
                              args['loinc'] = loinc
                              gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': args}])

                      # delete old entries
                      cmd = 'DELETE FROM ref.lnk_loinc2substance WHERE fk_substance = %(pk_subst)s AND loinc <> ALL(%(loincs)s)'
                      gmPG2.run_rw_queries(queries = [{'cmd': cmd, 'args': args}])

              loincs = property(lambda x:x, _set_loincs)

              #--------------------------------------------------------
              def _get_is_in_use_by_patients(self):
                      cmd = """
                              SELECT EXISTS (
                                      SELECT 1
                                      FROM clin.v_intakes
                                      WHERE pk_substance = %(pk)s
                                      LIMIT 1
                              )"""
                      args = {'pk': self.pk_obj}

                      rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = False)
                      return rows[0][0]

              is_in_use_by_patients = property(_get_is_in_use_by_patients)

              #--------------------------------------------------------
              def _get_is_drug_component(self):
                      cmd = """
                              SELECT EXISTS (
                                      SELECT 1
                                      FROM ref.v_drug_components
                                      WHERE pk_substance = %(pk)s
                                      LIMIT 1
                              )"""
                      args = {'pk': self.pk_obj}

                      rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = False)
                      return rows[0][0]

              is_drug_component = property(_get_is_drug_component)

  ### Ancestors

  - cBusinessDBObject

  ### Instance variables

  `var is_drug_component`
    Expand source code

        def _get_is_drug_component(self):
                cmd = """
                        SELECT EXISTS (
                                SELECT 1
                                FROM ref.v_drug_components
                                WHERE pk_substance = %(pk)s
                                LIMIT 1
                        )"""
                args = {'pk': self.pk_obj}

                rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = False)
                return rows[0][0]

  `var is_in_use_by_patients`
    Expand source code

        def _get_is_in_use_by_patients(self):
                cmd = """
                        SELECT EXISTS (
                                SELECT 1
                                FROM clin.v_intakes
                                WHERE pk_substance = %(pk)s
                                LIMIT 1
                        )"""
                args = {'pk': self.pk_obj}

                rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = False)
                return rows[0][0]

  `var loincs`
    Expand source code

        loincs = property(lambda x:x, _set_loincs)

  ### Methods

  `def exists_as_intake(self, pk_patient=None)`
    Expand source code

        def exists_as_intake(self, pk_patient=None):
                return substance_intake_exists (
                        pk_substance = self.pk_obj,
                        pk_identity = pk_patient
                )

  ### Inherited members

  - `cBusinessDBObject`:
    - `fields_as_dict`
    - `format`
    - `get_fields`
    - `get_patient`
    - `get_updatable_fields`
    - `is_modified`
    - `patient_pk`
    - `refetch_payload`
    - `same_payload`
    - `save`
    - `save_payload`
    - `staff_id`
`class cSubstanceDose (aPK_obj: Union[int, dict] = None, row: psycopg2.extras.DictRow = None, link_obj=None)`

  Represents business objects in the database.

  ## Rules

  - instances ARE ASSUMED TO EXIST in the database
  - PK construction (aPK_obj): DOES verify its existence on instantiation (fetching data fails)
  - Row construction (row): allowed by using a dict of pairs of field name: field value (PERFORMANCE improvement)
  - does NOT verify FK target existence
  - does NOT create new entries in the database
  - does NOT lazy-fetch fields on access

  Class scope SQL commands and variables:

  _cmd_fetch_payload:

  - must return exactly one row
  - WHERE clause argument values are expected in self.pk_obj (taken from init(aPK_obj))
  - must return xmin of all rows that _cmds_store_payload will be updating, so views must support the xmin columns of their underlying tables

  _cmds_store_payload:

  - one or multiple "update … set … where xmin_ = … and pk = …" statements which actually update the database from the data in self._payload,
  - the last query must refetch at least the XMIN values needed to detect concurrent updates, their field names had better be the same as in _cmd_fetch_payload,
  - the last query CAN return other fields which is particularly useful when those other fields are computed in the backend and may thus change upon save but will not have been set by the client code explicitly - this is only really of concern if the saved subclass is to be reused after saving rather than re-instantiated
  - when subclasses tend to live a while after save_payload() was called and they support computed fields (say, _(some_column) you need to return all columns (see cEncounter)

  _updatable_fields:

  - a list of fields available for update via object['field']

  Call init from child classes like so:

          super().__init__(aPK_obj = aPK_obj, row = row, link_obj = link_obj)

  ## Args

  `aPK_obj`
    retrieve data from backend
  - a simple value the primary key WHERE condition must be a simple column
  - a dictionary of values the primary key WHERE condition must be a subselect consuming the dict and producing the single-value primary key
  `row`
    must hold the fields
  - idx: a dict mapping field names to position
  - data: the field values in a list (as returned by cursor.fetchone() in the DB-API)
  - pk_field: the name of the primary key field OR
  - pk_obj: a dictionary suitable for passed to cursor.execute and holding the primary key values, used for composite PKs
  - for example:

        row = {
                'data': rows[0],
                'idx': idx,
                'pk_field': 'pk_XXX (the PK column name)',
                'pk_obj': {'pk_col1': pk_col1_val, 'pk_col2': pk_col2_val}
        }
        rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = True)
        objects = [ cChildClass(row = {'data': r, 'idx': idx, 'pk_field': 'the PK column name'}) for r in rows ]

  Expand source code

      class cSubstanceDose(gmBusinessDBObject.cBusinessDBObject):

              _cmd_fetch_payload = _SQL_get_substance_dose % "pk_dose = %s"
              _cmds_store_payload = [
                      """UPDATE ref.dose SET
                                      amount = %(amount)s,
                                      unit = %(unit)s,
                                      dose_unit = gm.nullify_empty_string(%(dose_unit)s)
                              WHERE
                                      pk = %(pk_dose)s
                                              AND
                                      xmin = %(xmin_dose)s
                              RETURNING
                                      xmin as xmin_dose,
                                      pk as pk_dose
                      """
              ]
              _updatable_fields = [
                      'amount',
                      'unit',
                      'dose_unit'
              ]

              #--------------------------------------------------------
              def format(self, left_margin=0, include_loincs=False):
                      loincs = ''
                      if include_loincs and (len(self._payload[self._idx['loincs']]) > 0):
                              loincs = """
      %s %s
      %s  %s"""       % (
                                      (' ' * left_margin),
                                      _('LOINCs to monitor:'),
                                      (' ' * left_margin),
                                      ('\n' + (' ' * (left_margin + 1))).join ([
                                              '%s%s%s' % (
                                                      l['loinc'],
                                                      gmTools.coalesce(l['max_age_str'], '', ': ' + _('once within %s')),
                                                      gmTools.coalesce(l['comment'], '', ' (%s)')
                                              ) for l in self._payload[self._idx['loincs']]
                                      ])
                              )
                      return (' ' * left_margin) + '%s: %s %s%s%s%s%s' % (
                              _('Substance dose'),
                              self._payload[self._idx['substance']],
                              self._payload[self._idx['amount']],
                              self.formatted_units,
                              gmTools.coalesce(self._payload[self._idx['atc_substance']], '', ' [%s]'),
                              gmTools.coalesce(self._payload[self._idx['intake_instructions']], '', '\n' + (' ' * left_margin) + ' ' + _('Instructions: %s')),
                              loincs
                      )

              #--------------------------------------------------------
              def exists_as_intake(self, pk_patient=None):
                      return substance_intake_exists (
                              pk_dose = self.pk_obj,
                              pk_identity = pk_patient
                      )

              #--------------------------------------------------------
              # properties
              #--------------------------------------------------------
              def _get_is_in_use_by_patients(self):
                      cmd = """
                              SELECT EXISTS (
                                      SELECT 1
                                      FROM clin.v_intakes
                                      WHERE pk_dose = %(pk)s
                                      LIMIT 1
                              )"""
                      args = {'pk': self.pk_obj}

                      rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = False)
                      return rows[0][0]

              is_in_use_by_patients = property(_get_is_in_use_by_patients)

              #--------------------------------------------------------
              def _get_is_drug_component(self):
                      cmd = """
                              SELECT EXISTS (
                                      SELECT 1
                                      FROM ref.v_drug_components
                                      WHERE pk_dose = %(pk)s
                                      LIMIT 1
                              )"""
                      args = {'pk': self.pk_obj}
                      rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = False)
                      return rows[0][0]

              is_drug_component = property(_get_is_drug_component)

              #--------------------------------------------------------
              def _get_formatted_units(self, short=True):
                      return format_units (
                              self._payload[self._idx['unit']],
                              gmTools.coalesce(self._payload[self._idx['dose_unit']], _('delivery unit')),
                              short = short
                      )

              formatted_units = property(_get_formatted_units)

  ### Ancestors

  - cBusinessDBObject

  ### Instance variables

  `var formatted_units`
    Expand source code

        def _get_formatted_units(self, short=True):
                return format_units (
                        self._payload[self._idx['unit']],
                        gmTools.coalesce(self._payload[self._idx['dose_unit']], _('delivery unit')),
                        short = short
                )

  `var is_drug_component`
    Expand source code

        def _get_is_drug_component(self):
                cmd = """
                        SELECT EXISTS (
                                SELECT 1
                                FROM ref.v_drug_components
                                WHERE pk_dose = %(pk)s
                                LIMIT 1
                        )"""
                args = {'pk': self.pk_obj}
                rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = False)
                return rows[0][0]

  `var is_in_use_by_patients`
    Expand source code

        def _get_is_in_use_by_patients(self):
                cmd = """
                        SELECT EXISTS (
                                SELECT 1
                                FROM clin.v_intakes
                                WHERE pk_dose = %(pk)s
                                LIMIT 1
                        )"""
                args = {'pk': self.pk_obj}

                rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = False)
                return rows[0][0]

  ### Methods

  `def exists_as_intake(self, pk_patient=None)`
    Expand source code

        def exists_as_intake(self, pk_patient=None):
                return substance_intake_exists (
                        pk_dose = self.pk_obj,
                        pk_identity = pk_patient
                )

  ### Inherited members

  - `cBusinessDBObject`:
    - `fields_as_dict`
    - `format`
    - `get_fields`
    - `get_patient`
    - `get_updatable_fields`
    - `is_modified`
    - `patient_pk`
    - `refetch_payload`
    - `same_payload`
    - `save`
    - `save_payload`
    - `staff_id`
`class cSubstanceDoseMatchProvider (queries=None, context=None)`

  Match provider which searches matches in possibly several database tables.

  queries: - a list of unicode strings - each string is a query - each string must contain: "… WHERE %(fragment_condition)s …" - each string can contain in the where clause: "… %()s …" - each query must return (data, list_label, field_label)

  context definitions to be used in the queries, example: {'ctxt_key1': {'where_part': 'AND country = %(country)s', 'placeholder': 'country'}}

  client code using .set_context() must use the 'placeholder': /.set_context('country', 'Germany')

  full example query:

          query = u" " "
                  SELECT DISTINCT ON (list_label)
                          pk_encounter
                                  AS data,
                          to_char(started, 'YYYY Mon DD (HH24:MI)') || ': ' || l10n_type || ' [#' || pk_encounter || ']'
                                  AS list_label,
                          to_char(started, 'YYYY Mon DD') || ': ' || l10n_type
                                  AS field_label
                  FROM
                          clin.v_pat_encounters
                  WHERE
                          (
                                  l10n_type %(fragment_condition)s
                                          OR
                                  type %(fragment_condition)s
                          )       %(ctxt_patient)s
                  ORDER BY
                          list_label
                  LIMIT
                          30
          " " "
          context = {'ctxt_patient': {
                  'where_part': u'AND pk_patient = %(PLACEHOLDER)s',
                  'placeholder': u'PLACEHOLDER'
          }}
          self.mp = gmMatchProvider.cMatchProvider_SQL2(queries = query, context = context)
          self.set_context(context = 'PLACEHOLDER', val = '<THE VALUE>')

  _SQL_data2match: SQL to retrieve a match by, say, primary key wherein the only keyword argument is 'pk'

  Expand source code

      class cSubstanceDoseMatchProvider(gmMatchProvider.cMatchProvider_SQL2):

              _pattern = regex.compile(r'^\D+\s*\d+$', regex.UNICODE)

              # the "normal query" is run when the search fragment
              # does NOT match the regex ._pattern (which is: "chars SPACE digits")
              _normal_query = """
                      SELECT
                              r_vsd.pk_dose
                                      AS data,
                              (r_vsd.substance || ' ' || r_vsd.amount || ' ' || r_vsd.unit || coalesce(' / ' r_vsd.dose_unit ||, ''))
                                      AS field_label,
                              (r_vsd.substance || ' ' || r_vsd.amount || ' ' || r_vsd.unit || coalesce(' / ' r_vsd.dose_unit ||, ''))
                                      AS list_label
                      FROM
                              ref.v_substance_doses r_vsd
                      WHERE
                              r_vsd.substance %%(fragment_condition)s
                      ORDER BY
                              list_label
                      LIMIT 50"""

              # the "regex query" is run when the search fragment
              # DOES match the regex ._pattern (which is: "chars SPACE digits")
              _regex_query =  """
                      SELECT
                              r_vsd.pk_dose
                                      AS data,
                              (r_vsd.substance || ' ' || r_vsd.amount || ' ' || r_vsd.unit || coalesce(' / ' r_vsd.dose_unit ||, ''))
                                      AS field_label,
                              (r_vsd.substance || ' ' || r_vsd.amount || ' ' || r_vsd.unit || coalesce(' / ' r_vsd.dose_unit ||, ''))
                                      AS list_label
                      FROM
                              ref.v_substance_doses r_vsd
                      WHERE
                              %%(fragment_condition)s
                      ORDER BY
                              list_label
                      LIMIT 50"""

              #--------------------------------------------------------
              def getMatchesByPhrase(self, aFragment):
                      """Return matches for aFragment at start of phrases."""

                      if cSubstanceDoseMatchProvider._pattern.match(aFragment):
                              self._queries = [cSubstanceDoseMatchProvider._regex_query]
                              fragment_condition = """substance ILIKE %(subst)s
                                      AND
                              amount::text ILIKE %(amount)s"""
                              self._args['subst'] = '%s%%' % regex.sub(r'\s*\d+$', '', aFragment)
                              self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                      else:
                              self._queries = [cSubstanceDoseMatchProvider._normal_query]
                              fragment_condition = "ILIKE %(fragment)s"
                              self._args['fragment'] = "%s%%" % aFragment

                      return self._find_matches(fragment_condition)

              #--------------------------------------------------------
              def getMatchesByWord(self, aFragment):
                      """Return matches for aFragment at start of words inside phrases."""

                      if cSubstanceDoseMatchProvider._pattern.match(aFragment):
                              self._queries = [cSubstanceDoseMatchProvider._regex_query]

                              subst = regex.sub(r'\s*\d+$', '', aFragment)
                              subst = gmPG2.sanitize_pg_regex(expression = subst, escape_all = False)

                              fragment_condition = """substance ~* %(subst)s
                                      AND
                              amount::text ILIKE %(amount)s"""

                              self._args['subst'] = "( %s)|(^%s)" % (subst, subst)
                              self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                      else:
                              self._queries = [cSubstanceDoseMatchProvider._normal_query]
                              fragment_condition = "~* %(fragment)s"
                              aFragment = gmPG2.sanitize_pg_regex(expression = aFragment, escape_all = False)
                              self._args['fragment'] = "( %s)|(^%s)" % (aFragment, aFragment)

                      return self._find_matches(fragment_condition)

              #--------------------------------------------------------
              def getMatchesBySubstr(self, aFragment):
                      """Return matches for aFragment as a true substring."""

                      if cSubstanceDoseMatchProvider._pattern.match(aFragment):
                              self._queries = [cSubstanceDoseMatchProvider._regex_query]
                              fragment_condition = """substance ILIKE %(subst)s
                                      AND
                              amount::text ILIKE %(amount)s"""
                              self._args['subst'] = '%%%s%%' % regex.sub(r'\s*\d+$', '', aFragment)
                              self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                      else:
                              self._queries = [cSubstanceDoseMatchProvider._normal_query]
                              fragment_condition = "ILIKE %(fragment)s"
                              self._args['fragment'] = "%%%s%%" % aFragment

                      return self._find_matches(fragment_condition)

  ### Ancestors

  - cMatchProvider_SQL2
  - cMatchProvider

  ### Inherited members

  - `cMatchProvider_SQL2`:
    - `getAllMatches`
    - `getMatches`
    - `getMatchesByPhrase`
    - `getMatchesBySubstr`
    - `getMatchesByWord`
    - `setThresholds`
    - `set_context`
`class cSubstanceIntakeEntry (aPK_obj: Union[int, dict] = None, row: psycopg2.extras.DictRow = None, link_obj=None)`

  Represents a substance having been/being taken by a patient.

  Call init from child classes like so:

          super().__init__(aPK_obj = aPK_obj, row = row, link_obj = link_obj)

  ## Args

  `aPK_obj`
    retrieve data from backend
  - a simple value the primary key WHERE condition must be a simple column
  - a dictionary of values the primary key WHERE condition must be a subselect consuming the dict and producing the single-value primary key
  `row`
    must hold the fields
  - idx: a dict mapping field names to position
  - data: the field values in a list (as returned by cursor.fetchone() in the DB-API)
  - pk_field: the name of the primary key field OR
  - pk_obj: a dictionary suitable for passed to cursor.execute and holding the primary key values, used for composite PKs
  - for example:

        row = {
                'data': rows[0],
                'idx': idx,
                'pk_field': 'pk_XXX (the PK column name)',
                'pk_obj': {'pk_col1': pk_col1_val, 'pk_col2': pk_col2_val}
        }
        rows, idx = gmPG2.run_ro_queries(queries = [{'cmd': cmd, 'args': args}], get_col_idx = True)
        objects = [ cChildClass(row = {'data': r, 'idx': idx, 'pk_field': 'the PK column name'}) for r in rows ]

  Expand source code

      class cSubstanceIntakeEntry(gmBusinessDBObject.cBusinessDBObject):
              """Represents a substance having been/being taken by a patient."""

              _cmd_fetch_payload = _SQL_get_substance_intake % 'pk_intake = %s'
              _cmds_store_payload = [
                      """UPDATE clin.intake SET
                                      clin_when = %(last_checked_when)s,
                                      notes4patient = gm.nullify_empty_string(%(notes4patient)s),
                                      narrative = gm.nullify_empty_string(%(notes4provider)s),
                                      use_type = %(use_type)s,
                                      fk_episode = %(pk_episode)s,
                                      fk_encounter = %(pk_encounter)s
                              WHERE
                                      pk = %(pk_intake)s
                                              AND
                                      xmin = %(xmin_intake)s
                              RETURNING
                                      xmin as xmin_intake
                      """
              ]
              _updatable_fields = [
                      'last_checked_when',
                      'notes4patient',
                      'notes4provider'
                      'use_type',
                      'pk_episode',
                      'pk_encounter'
              ]

              #--------------------------------------------------------
              def format_maximum_information(self, patient=None):
                      return self.format (
                              single_line = False,
                              show_all_product_components = True,
                              include_metadata = True,
                              date_format = '%Y %b %d',
                              include_instructions = True,
                              include_loincs = True
                      ).split('\n')

              #--------------------------------------------------------
              def format(self, left_margin=0, date_format='%Y %b %d', single_line=True, allergy=None, show_all_product_components=False, include_metadata=True, include_instructions=False, include_loincs=False, eol='\n'):

                      # medication
                      if self._payload[self._idx['use_type']] is None:
                              if single_line:
                                      return self.format_as_single_line(left_margin = left_margin, date_format = date_format)

                              return self.format_as_multiple_lines (
                                      left_margin = left_margin,
                                      date_format = date_format,
                                      allergy = allergy,
                                      show_all_product_components = show_all_product_components,
                                      include_instructions = include_instructions,
                                      eol = eol
                              )

                      # abuse
                      if single_line:
                              return self.format_as_single_line_abuse(left_margin = left_margin, date_format = date_format)

                      return self.format_as_multiple_lines_abuse(left_margin = left_margin, date_format = date_format, include_metadata = include_metadata, eol = eol)

              #--------------------------------------------------------
              def format_as_single_line_abuse(self, left_margin=0, date_format='%Y %b %d'):
                      return '%s%s: %s (%s)' % (
                              ' ' * left_margin,
                              self._payload[self._idx['substance']],
                              self.use_type_string,
                              gmDateTime.pydt_strftime(self._payload[self._idx['last_checked_when']], '%b %Y')
                      )

              #--------------------------------------------------------
              def format_as_single_line(self, left_margin=0, date_format='%Y %b %d'):

                      if self._payload[self._idx['planned_duration']] is not None:
                              duration = gmDateTime.format_interval (
                                      self._payload[self._idx['planned_duration']],
                                      accuracy_wanted = gmDateTime.acc_days
                              )
                      elif self._payload[self._idx['discontinued']] is not None:
                              duration = gmDateTime.pydt_strftime(self._payload[self._idx['discontinued']], date_format)
                      else:
                              duration = _('?')
                      line = '%s%s (%s %s): %s %s%s' % (
                              ' ' * left_margin,
                              self.medically_formatted_start,
                              gmTools.u_arrow2right,
                              duration,
                              self._payload[self._idx['substance']],
                              self._payload[self._idx['amount']],
                              self.formatted_units
                      )

                      return line

              #--------------------------------------------------------
              def format_as_multiple_lines_abuse(self, left_margin=0, date_format='%Y %b %d', include_metadata=True, eol='\n'):
                      lines = []
                      if include_metadata:
                              lines.append(_('Substance abuse entry                                              [#%s]') % self._payload[self._idx['pk_intake']])
                      lines.append(' ' + _('Substance: %s [#%s]%s') % (
                              self._payload[self._idx['substance']],
                              self._payload[self._idx['pk_substance']],
                              gmTools.coalesce(self._payload[self._idx['atc_substance']], '', ' ATC %s')
                      ))
                      lines.append(' ' + _('Use type: %s') % self.use_type_string)
                      lines.append(' ' + _('Last checked: %s') % gmDateTime.pydt_strftime(self._payload[self._idx['last_checked_when']], '%Y %b %d'))
                      if self._payload[self._idx['discontinued']]:
                              lines.append(_(' Discontinued %s') % (
                                      gmDateTime.pydt_strftime (
                                              self._payload[self._idx['discontinued']],
                                              format = date_format,
                                              accuracy = gmDateTime.acc_days
                                      )
                              ))
                      if self._payload[self._idx['notes4provider']]:
                              lines.append(_(' Notes: %s') % self._payload[self._idx['notes4provider']])
                      if include_metadata:
                              lines.append('')
                              lines.append(_('Revision: #%(row_ver)s, %(mod_when)s by %(mod_by)s.') % {
                                      'row_ver': self._payload[self._idx['row_version']],
                                      'mod_when': gmDateTime.pydt_strftime(self._payload[self._idx['modified_when']]),
                                      'mod_by': self._payload[self._idx['modified_by']]
                              })
                      if eol is None:
                              return lines

                      return eol.join(lines)

              #--------------------------------------------------------
              def format_as_multiple_lines(self, left_margin:int=0, date_format:str='%Y %b %d', allergy=None, show_all_product_components:bool=False, include_instructions:bool=False, include_loincs:bool=False, eol='\n'):# -> list | str:
                      lines = []
                      # header
                      status = _('inactive')
                      if self._payload[self._idx['discontinued']] is None:
                              status = _('active')
                      elif self._payload[self._idx['discontinued']] > gmDateTime.pydt_now_here():
                              status = _('active')
                      lines.append(_('Substance intake entry (%s)   [#%s]                     ') % (
                              status,
                              self._payload[self._idx['pk_intake']]
                      ))
                      # caveat
                      if allergy:
                              certainty = gmTools.bool2subst(allergy['definite'], _('definite'), _('suspected'))
                              lines.append('')
                              lines.append(' !! ---- Cave ---- !!')
                              lines.append(' %s (%s): %s (%s)' % (
                                      allergy['l10n_type'],
                                      certainty,
                                      allergy['descriptor'],
                                      gmTools.coalesce(allergy['reaction'], '')[:40]
                              ))
                              lines.append('')
                      # what
                      lines.append(' ' + _('Substance: %s   [#%s]') % (self._payload[self._idx['substance']], self._payload[self._idx['pk_substance']]))
                      if self._payload[self._idx['l10n_preparation']]:
                              lines.append(' ' + _('Preparation: %s') % self._payload[self._idx['l10n_preparation']])
                      if self._payload[self._idx['amount']]:
                              lines.append(' ' + _('Amount per dose: %s %s') % (
                                      self._payload[self._idx['amount']],
                                      self._get_formatted_units(short = False)
                              ))
                      # codes
                      if self._payload[self._idx['atc_substance']]:
                              lines.append(_(' ATC (substance): %s') % self._payload[self._idx['atc_substance']])
                      if include_loincs and self._payload[self._idx['loincs']]:
                              lines.append('%s %s' % (' ' * left_margin, _('LOINCs to monitor:')))
                              lines.extend(['%s%s%s%s' % (
                                      ' ' * (left_margin + 1),
                                      l['loinc'],
                                      gmTools.coalesce(l['max_age_str'], '', ': ' + _('once within %s')),
                                      gmTools.coalesce(l['comment'], '', ' (%s)')
                              ) for l in self._payload[self._idx['loincs']]
                      ])
                      lines.append('')
                      lines.append('')
                      # drug product
                      product = self.containing_drug
                      if product:
                              lines.append(_(' Product name: %s   [#%s]') % (self._payload[self._idx['drug_product']], self._payload[self._idx['pk_drug_product']]))
                              if self._payload[self._idx['atc_drug']]:
                                      lines.append(_(' ATC (drug): %s') % self._payload[self._idx['atc_drug']])
                              if show_all_product_components and (len(product['components']) > 1):
                                      for comp in product['components']:
                                              if comp['pk_substance'] == self._payload[self._idx['substance']]:
                                                      continue
                                              lines.append('  ' + _('Other component: %s %s %s') % (
                                                      comp['substance'],
                                                      comp['amount'],
                                                      format_units(comp['unit'], comp['dose_unit'])
                                              ))
                                              if comp['intake_instructions']:
                                                      lines.append('   ' + _('Intake: %s') % comp['intake_instructions'])
                                              if include_loincs and comp['loincs']:
                                                      lines.append('   ' + _('LOINCs to monitor:'))
                                                      lines.extend(['    %s%s%s' % (
                                                              l['loinc'],
                                                              gmTools.coalesce(l['max_age_str'], '', ': %s'),
                                                              gmTools.coalesce(l['comment'], '', ' (%s)')
                                                      ) for l in comp['loincs'] ])
                              lines.append('')
                      # regimen
                      if self._payload[self._idx['schedule']]:
                              lines.append(_(' Regimen: %s') % self._payload[self._idx['schedule']])
                      if self._payload[self._idx['planned_duration']] is None:
                              duration = ''
                      else:
                              duration = ' %s %s' % (gmTools.u_arrow2right, gmDateTime.format_interval(self._payload[self._idx['planned_duration']], gmDateTime.acc_days))
                      lines.append(_(' Started %s%s') % (self.medically_formatted_start, duration))
                      if self._payload[self._idx['discontinued']]:
                              lines.append(_(' Discontinued %s') % (
                                      gmDateTime.pydt_strftime (
                                              self._payload[self._idx['discontinued']],
                                              format = date_format,
                                              accuracy = gmDateTime.acc_days
                                      )
                              ))
                      if self._payload[self._idx['discontinue_reason']]:
                              lines.append(_(' Reason: %s') % self._payload[self._idx['discontinue_reason']])
                      lines.append('')
                      # further notes
                      lines.append(_(' Episode: %s')% self._payload[self._idx['episode']])
                      if self._payload[self._idx['health_issue']]:
                              lines.append(_(' Health issue: %s') % self._payload[self._idx['health_issue']])
                      if self._payload[self._idx['notes4provider']]:
                              lines.append(_(' Provider notes: %s') % self._payload[self._idx['notes4provider']])
                      if self._payload[self._idx['notes4patient']]:
                              lines.append(_(' Patient advice: %s') % self._payload[self._idx['notes4patient']])
                      if self._payload[self._idx['intake_instructions']]:
                              lines.append(' ' + _('Intake: %s') % self._payload[self._idx['intake_instructions']])
                      lines.append('')
                      lines.append(_('Revision: #%(row_ver)s, %(mod_when)s by %(mod_by)s.') % {
                              'row_ver': self._payload[self._idx['row_version']],
                              'mod_when': gmDateTime.pydt_strftime(self._payload[self._idx['modified_when']]),
                              'mod_by': self._payload[self._idx['modified_by']]
                      })
                      if eol is None:
                              return lines

                      return eol.join(lines)

              #--------------------------------------------------------
              def turn_into_allergy(self, encounter_id=None, allergy_type='allergy'):
                      allg = gmAllergy.create_allergy (
                              allergene = self._payload[self._idx['substance']],
                              allg_type = allergy_type,
                              episode_id = self._payload[self._idx['pk_episode']],
                              encounter_id = encounter_id
                      )
                      allg['substance'] = gmTools.coalesce (
                              self._payload[self._idx['drug_product']],
                              self._payload[self._idx['substance']]
                      )
                      allg['reaction'] = self._payload[self._idx['discontinue_reason']]
                      allg['atc_code'] = gmTools.coalesce(self._payload[self._idx['atc_substance']], self._payload[self._idx['atc_drug']])
                      if self._payload[self._idx['external_code_product']] is not None:
                              allg['substance_code'] = '%s::::%s' % (self._payload[self._idx['external_code_type_product']], self._payload[self._idx['external_code_product']])

                      if self._payload[self._idx['pk_drug_product']] is None:
                              allg['generics'] = self._payload[self._idx['substance']]
                      else:
                              comps = [ c['substance'] for c in self.containing_drug.components ]
                              if len(comps) == 0:
                                      allg['generics'] = self._payload[self._idx['substance']]
                              else:
                                      allg['generics'] = '; '.join(comps)

                      allg.save()
                      return allg

              #--------------------------------------------------------
              def delete(self):
                      return delete_substance_intake(pk_intake = self._payload[self._idx['pk_intake']])

              #--------------------------------------------------------
              # properties
              #--------------------------------------------------------
              def _get_use_type_string(self):

                      if self._payload[self._idx['use_type']] is None:
                              return _('medication, not abuse')
                      if self._payload[self._idx['use_type']] == 0:
                              return _('no or non-harmful use')
                      if self._payload[self._idx['use_type']] == 1:
                              return _('presently harmful use')
                      if self._payload[self._idx['use_type']] == 2:
                              return _('presently addicted')
                      if self._payload[self._idx['use_type']] == 3:
                              return _('previously addicted')

              use_type_string = property(_get_use_type_string)

              #--------------------------------------------------------
              def _get_external_code(self):
                      drug = self.containing_drug

                      if drug is None:
                              return None

                      return drug.external_code

              external_code = property(_get_external_code)

              #--------------------------------------------------------
              def _get_external_code_type(self):
                      drug = self.containing_drug

                      if drug is None:
                              return None

                      return drug.external_code_type

              external_code_type = property(_get_external_code_type)

              #--------------------------------------------------------
              def _get_containing_drug(self):
                      if self._payload[self._idx['pk_drug_product']] is None:
                              return None

                      return cDrugProduct(aPK_obj = self._payload[self._idx['pk_drug_product']])

              containing_drug = property(_get_containing_drug)

              #--------------------------------------------------------
              def _get_formatted_units(self, short=True):
                      return format_units (
                              self._payload[self._idx['unit']],
                              self._payload[self._idx['dose_unit']],
                              self._payload[self._idx['l10n_preparation']],
                              short = short
                      )

              formatted_units = property(_get_formatted_units)

              #--------------------------------------------------------
              def _get_medically_formatted_start(self):
                      if self._payload[self._idx['comment_on_start']] == '?':
                              return '?'

                      start_prefix = ''
                      if self._payload[self._idx['comment_on_start']] is not None:
                              start_prefix = gmTools.u_almost_equal_to

                      duration_taken = gmDateTime.pydt_now_here() - self._payload[self._idx['started']]

                      three_months = pydt.timedelta(weeks = 13, days = 3)
                      if duration_taken < three_months:
                              return _('%s%s: %s ago%s') % (
                                      start_prefix,
                                      gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%Y %b %d', 'utf8', gmDateTime.acc_days),
                                      gmDateTime.format_interval_medically(duration_taken),
                                      gmTools.coalesce(self._payload[self._idx['comment_on_start']], '', ' (%s)')
                              )

                      five_years = pydt.timedelta(weeks = 265)
                      if duration_taken < five_years:
                              return _('%s%s: %s ago (%s)') % (
                                      start_prefix,
                                      gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%Y %b', 'utf8', gmDateTime.acc_months),
                                      gmDateTime.format_interval_medically(duration_taken),
                                      gmTools.coalesce (
                                              self._payload[self._idx['comment_on_start']],
                                              gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%b %d', 'utf8', gmDateTime.acc_days),
                                      )
                              )

                      return _('%s%s: %s ago (%s)') % (
                              start_prefix,
                              gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%Y', 'utf8', gmDateTime.acc_years),
                              gmDateTime.format_interval_medically(duration_taken),
                              gmTools.coalesce (
                                      self._payload[self._idx['comment_on_start']],
                                      gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%b %d', 'utf8', gmDateTime.acc_days),
                              )
                      )

              medically_formatted_start = property(_get_medically_formatted_start)

              #--------------------------------------------------------
              def _get_medically_formatted_start_end_of_stopped(self, now):

                      # format intro
                      if gmDateTime.pydt_is_today(self._payload[self._idx['discontinued']]):
                              intro = _('until today')
                      else:
                              ended_ago = now - self._payload[self._idx['discontinued']]
                              intro = _('until %s%s ago') % (
                                      gmTools.u_almost_equal_to,
                                      gmDateTime.format_interval_medically(ended_ago),
                              )

                      # format start
                      if self._payload[self._idx['started']] is None:
                              start = gmTools.coalesce(self._payload[self._idx['comment_on_start']], '?')
                      else:
                              start = '%s%s%s' % (
                                      gmTools.bool2subst((self._payload[self._idx['comment_on_start']] is None), '', gmTools.u_almost_equal_to),
                                      gmDateTime.pydt_strftime(self._payload[self._idx['started']], format = '%Y %b %d', accuracy = gmDateTime.acc_days),
                                      gmTools.coalesce(self._payload[self._idx['comment_on_start']], '', ' [%s]')
                              )

                      # format duration taken
                      if self._payload[self._idx['started']] is None:
                              duration_taken_str = '?'
                      else:
                              duration_taken = self._payload[self._idx['discontinued']] - self._payload[self._idx['started']] + pydt.timedelta(days = 1)
                              duration_taken_str = gmDateTime.format_interval (duration_taken, gmDateTime.acc_days)

                      # format duration planned
                      if self._payload[self._idx['planned_duration']] is None:
                              duration_planned_str = ''
                      else:
                              duration_planned_str = _(' [planned: %s]') % gmDateTime.format_interval(self._payload[self._idx['planned_duration']], gmDateTime.acc_days)

                      # format end
                      end = gmDateTime.pydt_strftime(self._payload[self._idx['discontinued']], '%Y %b %d', 'utf8', gmDateTime.acc_days)

                      # assemble
                      txt = '%s (%s %s %s%s %s %s)' % (
                              intro,
                              start,
                              gmTools.u_arrow2right_thick,
                              duration_taken_str,
                              duration_planned_str,
                              gmTools.u_arrow2right_thick,
                              end
                      )
                      return txt

              #--------------------------------------------------------
              def _get_medically_formatted_start_end(self):

                      now = gmDateTime.pydt_now_here()

                      # medications stopped today or before today
                      if self._payload[self._idx['discontinued']] is not None:
                              if (self._payload[self._idx['discontinued']] < now) or (gmDateTime.pydt_is_today(self._payload[self._idx['discontinued']])):
                                      return self._get_medically_formatted_start_end_of_stopped(now)

                      # ongoing medications
                      arrow_parts = []

                      # format start
                      if self._payload[self._idx['started']] is None:
                              start_str = gmTools.coalesce(self._payload[self._idx['comment_on_start']], '?')
                      else:
                              start_prefix = gmTools.bool2subst((self._payload[self._idx['comment_on_start']] is None), '', gmTools.u_almost_equal_to)
                              # starts today
                              if gmDateTime.pydt_is_today(self._payload[self._idx['started']]):
                                      start_str = _('today (%s)') % gmDateTime.pydt_strftime(self._payload[self._idx['started']], format = '%Y %b %d', accuracy = gmDateTime.acc_days)
                              # started in the past
                              elif self._payload[self._idx['started']] < now:
                                      started_ago = now - self._payload[self._idx['started']]
                                      three_months = pydt.timedelta(weeks = 13, days = 3)
                                      five_years = pydt.timedelta(weeks = 265)
                                      if started_ago < three_months:
                                              start_str = _('%s%s%s (%s%s ago, in %s)') % (
                                                      start_prefix,
                                                      gmDateTime.pydt_strftime(self._payload[self._idx['started']], format = '%b %d', accuracy = gmDateTime.acc_days),
                                                      gmTools.coalesce(self._payload[self._idx['comment_on_start']], '', ' [%s]'),
                                                      gmTools.u_almost_equal_to,
                                                      gmDateTime.format_interval_medically(started_ago),
                                                      gmDateTime.pydt_strftime(self._payload[self._idx['started']], format = '%Y', accuracy = gmDateTime.acc_days)
                                              )
                                      elif started_ago < five_years:
                                              start_str = _('%s%s%s (%s%s ago, %s)') % (
                                                      start_prefix,
                                                      gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%Y %b', 'utf8', gmDateTime.acc_months),
                                                      gmTools.coalesce(self._payload[self._idx['comment_on_start']], '', ' [%s]'),
                                                      gmTools.u_almost_equal_to,
                                                      gmDateTime.format_interval_medically(started_ago),
                                                      gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%b %d', 'utf8', gmDateTime.acc_days)
                                              )
                                      else:
                                              start_str = _('%s%s%s (%s%s ago, %s)') % (
                                                      start_prefix,
                                                      gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%Y', 'utf8', gmDateTime.acc_years),
                                                      gmTools.coalesce(self._payload[self._idx['comment_on_start']], '', ' [%s]'),
                                                      gmTools.u_almost_equal_to,
                                                      gmDateTime.format_interval_medically(started_ago),
                                                      gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%b %d', 'utf8', gmDateTime.acc_days),
                                              )
                              # starts in the future
                              else:
                                      starts_in = self._payload[self._idx['started']] - now
                                      start_str = _('%s%s%s (in %s%s)') % (
                                              start_prefix,
                                              gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%Y %b %d', 'utf8', gmDateTime.acc_days),
                                              gmTools.coalesce(self._payload[self._idx['comment_on_start']], '', ' [%s]'),
                                              gmTools.u_almost_equal_to,
                                              gmDateTime.format_interval_medically(starts_in)
                                      )

                      arrow_parts.append(start_str)

                      # format durations
                      durations = []
                      if self._payload[self._idx['discontinued']] is not None:
                              if self._payload[self._idx['started']] is not None:
                                      duration_documented = self._payload[self._idx['discontinued']] - self._payload[self._idx['started']]
                                      durations.append(_('%s (documented)') % gmDateTime.format_interval(duration_documented, gmDateTime.acc_days))
                      if self._payload[self._idx['planned_duration']] is not None:
                              durations.append(_('%s (plan)') % gmDateTime.format_interval(self._payload[self._idx['planned_duration']], gmDateTime.acc_days))
                      if len(durations) == 0:
                              duration_str = '?'
                      else:
                              duration_str = ', '.join(durations)

                      arrow_parts.append(duration_str)

                      # format end
                      if self._payload[self._idx['discontinued']] is None:
                              if self._payload[self._idx['planned_duration']] is None:
                                      end_str = '?'
                              else:
                                      if self._payload[self._idx['started']] is None:
                                              end_str = '?'
                                      else:
                                              planned_end = self._payload[self._idx['started']] + self._payload[self._idx['planned_duration']] - pydt.timedelta(days = 1)
                                              if planned_end.year == now.year:
                                                      end_template = '%b %d'
                                                      if planned_end < now:
                                                              planned_end_from_now_str = _('%s ago, in %s') % (gmDateTime.format_interval(now - planned_end, gmDateTime.acc_days), planned_end.year)
                                                      else:
                                                              planned_end_from_now_str = _('in %s, %s') % (gmDateTime.format_interval(planned_end - now, gmDateTime.acc_days), planned_end.year)
                                              else:
                                                      end_template = '%Y'
                                                      if planned_end < now:
                                                              planned_end_from_now_str = _('%s ago = %s') % (
                                                                      gmDateTime.format_interval(now - planned_end, gmDateTime.acc_days),
                                                                      gmDateTime.pydt_strftime(planned_end, '%b %d', 'utf8', gmDateTime.acc_days)
                                                              )
                                                      else:
                                                              planned_end_from_now_str = _('in %s = %s') % (
                                                                      gmDateTime.format_interval(planned_end - now, gmDateTime.acc_days),
                                                                      gmDateTime.pydt_strftime(planned_end, '%b %d', 'utf8', gmDateTime.acc_days)
                                                              )
                                              end_str = '%s (%s)' % (
                                                      gmDateTime.pydt_strftime(planned_end, end_template, 'utf8', gmDateTime.acc_days),
                                                      planned_end_from_now_str
                                              )
                      else:
                              if gmDateTime.pydt_is_today(self._payload[self._idx['discontinued']]):
                                      end_str = _('today')
                              elif self._payload[self._idx['discontinued']].year == now.year:
                                      end_date_template = '%b %d'
                                      if self._payload[self._idx['discontinued']] < now:
                                              planned_end_from_now_str = _('%s ago, in %s') % (
                                                      gmDateTime.format_interval(now - self._payload[self._idx['discontinued']], gmDateTime.acc_days),
                                                      self._payload[self._idx['discontinued']].year
                                              )
                                      else:
                                              planned_end_from_now_str = _('in %s, %s') % (
                                                      gmDateTime.format_interval(self._payload[self._idx['discontinued']] - now, gmDateTime.acc_days),
                                                      self._payload[self._idx['discontinued']].year
                                              )
                              else:
                                      end_date_template = '%Y'
                                      if self._payload[self._idx['discontinued']] < now:
                                              planned_end_from_now_str = _('%s ago = %s') % (
                                                      gmDateTime.format_interval(now - self._payload[self._idx['discontinued']], gmDateTime.acc_days),
                                                      gmDateTime.pydt_strftime(self._payload[self._idx['discontinued']], '%b %d', 'utf8', gmDateTime.acc_days)
                                              )
                                      else:
                                              planned_end_from_now_str = _('in %s = %s') % (
                                                      gmDateTime.format_interval(self._payload[self._idx['discontinued']] - now, gmDateTime.acc_days),
                                                      gmDateTime.pydt_strftime(self._payload[self._idx['discontinued']], '%b %d', 'utf8', gmDateTime.acc_days)
                                              )
                              end_str = '%s (%s)' % (
                                      gmDateTime.pydt_strftime(self._payload[self._idx['discontinued']], end_date_template, 'utf8', gmDateTime.acc_days),
                                      planned_end_from_now_str
                              )

                      arrow_parts.append(end_str)

                      # assemble
                      return (' %s ' % gmTools.u_arrow2right_thick).join(arrow_parts)

              medically_formatted_start_end = property(_get_medically_formatted_start_end)

              #--------------------------------------------------------
              def _get_as_amts_latex(self, strict=True):
                      return format_substance_intake_as_amts_latex(intake = self, strict=strict)

              as_amts_latex = property(_get_as_amts_latex)

              #--------------------------------------------------------
              def _get_as_amts_data(self, strict=True):
                      return format_substance_intake_as_amts_data(intake = self, strict = strict)

              as_amts_data = property(_get_as_amts_data)

  ### Ancestors

  - cBusinessDBObject

  ### Instance variables

  `var as_amts_data`
    Expand source code

        def _get_as_amts_data(self, strict=True):
                return format_substance_intake_as_amts_data(intake = self, strict = strict)

  `var as_amts_latex`
    Expand source code

        def _get_as_amts_latex(self, strict=True):
                return format_substance_intake_as_amts_latex(intake = self, strict=strict)

  `var containing_drug`
    Expand source code

        def _get_containing_drug(self):
                if self._payload[self._idx['pk_drug_product']] is None:
                        return None

                return cDrugProduct(aPK_obj = self._payload[self._idx['pk_drug_product']])

  `var external_code`
    Expand source code

        def _get_external_code(self):
                drug = self.containing_drug

                if drug is None:
                        return None

                return drug.external_code

  `var external_code_type`
    Expand source code

        def _get_external_code_type(self):
                drug = self.containing_drug

                if drug is None:
                        return None

                return drug.external_code_type

  `var formatted_units`
    Expand source code

        def _get_formatted_units(self, short=True):
                return format_units (
                        self._payload[self._idx['unit']],
                        self._payload[self._idx['dose_unit']],
                        self._payload[self._idx['l10n_preparation']],
                        short = short
                )

  `var medically_formatted_start`
    Expand source code

        def _get_medically_formatted_start(self):
                if self._payload[self._idx['comment_on_start']] == '?':
                        return '?'

                start_prefix = ''
                if self._payload[self._idx['comment_on_start']] is not None:
                        start_prefix = gmTools.u_almost_equal_to

                duration_taken = gmDateTime.pydt_now_here() - self._payload[self._idx['started']]

                three_months = pydt.timedelta(weeks = 13, days = 3)
                if duration_taken < three_months:
                        return _('%s%s: %s ago%s') % (
                                start_prefix,
                                gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%Y %b %d', 'utf8', gmDateTime.acc_days),
                                gmDateTime.format_interval_medically(duration_taken),
                                gmTools.coalesce(self._payload[self._idx['comment_on_start']], '', ' (%s)')
                        )

                five_years = pydt.timedelta(weeks = 265)
                if duration_taken < five_years:
                        return _('%s%s: %s ago (%s)') % (
                                start_prefix,
                                gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%Y %b', 'utf8', gmDateTime.acc_months),
                                gmDateTime.format_interval_medically(duration_taken),
                                gmTools.coalesce (
                                        self._payload[self._idx['comment_on_start']],
                                        gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%b %d', 'utf8', gmDateTime.acc_days),
                                )
                        )

                return _('%s%s: %s ago (%s)') % (
                        start_prefix,
                        gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%Y', 'utf8', gmDateTime.acc_years),
                        gmDateTime.format_interval_medically(duration_taken),
                        gmTools.coalesce (
                                self._payload[self._idx['comment_on_start']],
                                gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%b %d', 'utf8', gmDateTime.acc_days),
                        )
                )

  `var medically_formatted_start_end`
    Expand source code

        def _get_medically_formatted_start_end(self):

                now = gmDateTime.pydt_now_here()

                # medications stopped today or before today
                if self._payload[self._idx['discontinued']] is not None:
                        if (self._payload[self._idx['discontinued']] < now) or (gmDateTime.pydt_is_today(self._payload[self._idx['discontinued']])):
                                return self._get_medically_formatted_start_end_of_stopped(now)

                # ongoing medications
                arrow_parts = []

                # format start
                if self._payload[self._idx['started']] is None:
                        start_str = gmTools.coalesce(self._payload[self._idx['comment_on_start']], '?')
                else:
                        start_prefix = gmTools.bool2subst((self._payload[self._idx['comment_on_start']] is None), '', gmTools.u_almost_equal_to)
                        # starts today
                        if gmDateTime.pydt_is_today(self._payload[self._idx['started']]):
                                start_str = _('today (%s)') % gmDateTime.pydt_strftime(self._payload[self._idx['started']], format = '%Y %b %d', accuracy = gmDateTime.acc_days)
                        # started in the past
                        elif self._payload[self._idx['started']] < now:
                                started_ago = now - self._payload[self._idx['started']]
                                three_months = pydt.timedelta(weeks = 13, days = 3)
                                five_years = pydt.timedelta(weeks = 265)
                                if started_ago < three_months:
                                        start_str = _('%s%s%s (%s%s ago, in %s)') % (
                                                start_prefix,
                                                gmDateTime.pydt_strftime(self._payload[self._idx['started']], format = '%b %d', accuracy = gmDateTime.acc_days),
                                                gmTools.coalesce(self._payload[self._idx['comment_on_start']], '', ' [%s]'),
                                                gmTools.u_almost_equal_to,
                                                gmDateTime.format_interval_medically(started_ago),
                                                gmDateTime.pydt_strftime(self._payload[self._idx['started']], format = '%Y', accuracy = gmDateTime.acc_days)
                                        )
                                elif started_ago < five_years:
                                        start_str = _('%s%s%s (%s%s ago, %s)') % (
                                                start_prefix,
                                                gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%Y %b', 'utf8', gmDateTime.acc_months),
                                                gmTools.coalesce(self._payload[self._idx['comment_on_start']], '', ' [%s]'),
                                                gmTools.u_almost_equal_to,
                                                gmDateTime.format_interval_medically(started_ago),
                                                gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%b %d', 'utf8', gmDateTime.acc_days)
                                        )
                                else:
                                        start_str = _('%s%s%s (%s%s ago, %s)') % (
                                                start_prefix,
                                                gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%Y', 'utf8', gmDateTime.acc_years),
                                                gmTools.coalesce(self._payload[self._idx['comment_on_start']], '', ' [%s]'),
                                                gmTools.u_almost_equal_to,
                                                gmDateTime.format_interval_medically(started_ago),
                                                gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%b %d', 'utf8', gmDateTime.acc_days),
                                        )
                        # starts in the future
                        else:
                                starts_in = self._payload[self._idx['started']] - now
                                start_str = _('%s%s%s (in %s%s)') % (
                                        start_prefix,
                                        gmDateTime.pydt_strftime(self._payload[self._idx['started']], '%Y %b %d', 'utf8', gmDateTime.acc_days),
                                        gmTools.coalesce(self._payload[self._idx['comment_on_start']], '', ' [%s]'),
                                        gmTools.u_almost_equal_to,
                                        gmDateTime.format_interval_medically(starts_in)
                                )

                arrow_parts.append(start_str)

                # format durations
                durations = []
                if self._payload[self._idx['discontinued']] is not None:
                        if self._payload[self._idx['started']] is not None:
                                duration_documented = self._payload[self._idx['discontinued']] - self._payload[self._idx['started']]
                                durations.append(_('%s (documented)') % gmDateTime.format_interval(duration_documented, gmDateTime.acc_days))
                if self._payload[self._idx['planned_duration']] is not None:
                        durations.append(_('%s (plan)') % gmDateTime.format_interval(self._payload[self._idx['planned_duration']], gmDateTime.acc_days))
                if len(durations) == 0:
                        duration_str = '?'
                else:
                        duration_str = ', '.join(durations)

                arrow_parts.append(duration_str)

                # format end
                if self._payload[self._idx['discontinued']] is None:
                        if self._payload[self._idx['planned_duration']] is None:
                                end_str = '?'
                        else:
                                if self._payload[self._idx['started']] is None:
                                        end_str = '?'
                                else:
                                        planned_end = self._payload[self._idx['started']] + self._payload[self._idx['planned_duration']] - pydt.timedelta(days = 1)
                                        if planned_end.year == now.year:
                                                end_template = '%b %d'
                                                if planned_end < now:
                                                        planned_end_from_now_str = _('%s ago, in %s') % (gmDateTime.format_interval(now - planned_end, gmDateTime.acc_days), planned_end.year)
                                                else:
                                                        planned_end_from_now_str = _('in %s, %s') % (gmDateTime.format_interval(planned_end - now, gmDateTime.acc_days), planned_end.year)
                                        else:
                                                end_template = '%Y'
                                                if planned_end < now:
                                                        planned_end_from_now_str = _('%s ago = %s') % (
                                                                gmDateTime.format_interval(now - planned_end, gmDateTime.acc_days),
                                                                gmDateTime.pydt_strftime(planned_end, '%b %d', 'utf8', gmDateTime.acc_days)
                                                        )
                                                else:
                                                        planned_end_from_now_str = _('in %s = %s') % (
                                                                gmDateTime.format_interval(planned_end - now, gmDateTime.acc_days),
                                                                gmDateTime.pydt_strftime(planned_end, '%b %d', 'utf8', gmDateTime.acc_days)
                                                        )
                                        end_str = '%s (%s)' % (
                                                gmDateTime.pydt_strftime(planned_end, end_template, 'utf8', gmDateTime.acc_days),
                                                planned_end_from_now_str
                                        )
                else:
                        if gmDateTime.pydt_is_today(self._payload[self._idx['discontinued']]):
                                end_str = _('today')
                        elif self._payload[self._idx['discontinued']].year == now.year:
                                end_date_template = '%b %d'
                                if self._payload[self._idx['discontinued']] < now:
                                        planned_end_from_now_str = _('%s ago, in %s') % (
                                                gmDateTime.format_interval(now - self._payload[self._idx['discontinued']], gmDateTime.acc_days),
                                                self._payload[self._idx['discontinued']].year
                                        )
                                else:
                                        planned_end_from_now_str = _('in %s, %s') % (
                                                gmDateTime.format_interval(self._payload[self._idx['discontinued']] - now, gmDateTime.acc_days),
                                                self._payload[self._idx['discontinued']].year
                                        )
                        else:
                                end_date_template = '%Y'
                                if self._payload[self._idx['discontinued']] < now:
                                        planned_end_from_now_str = _('%s ago = %s') % (
                                                gmDateTime.format_interval(now - self._payload[self._idx['discontinued']], gmDateTime.acc_days),
                                                gmDateTime.pydt_strftime(self._payload[self._idx['discontinued']], '%b %d', 'utf8', gmDateTime.acc_days)
                                        )
                                else:
                                        planned_end_from_now_str = _('in %s = %s') % (
                                                gmDateTime.format_interval(self._payload[self._idx['discontinued']] - now, gmDateTime.acc_days),
                                                gmDateTime.pydt_strftime(self._payload[self._idx['discontinued']], '%b %d', 'utf8', gmDateTime.acc_days)
                                        )
                        end_str = '%s (%s)' % (
                                gmDateTime.pydt_strftime(self._payload[self._idx['discontinued']], end_date_template, 'utf8', gmDateTime.acc_days),
                                planned_end_from_now_str
                        )

                arrow_parts.append(end_str)

                # assemble
                return (' %s ' % gmTools.u_arrow2right_thick).join(arrow_parts)

  `var use_type_string`
    Expand source code

        def _get_use_type_string(self):

                if self._payload[self._idx['use_type']] is None:
                        return _('medication, not abuse')
                if self._payload[self._idx['use_type']] == 0:
                        return _('no or non-harmful use')
                if self._payload[self._idx['use_type']] == 1:
                        return _('presently harmful use')
                if self._payload[self._idx['use_type']] == 2:
                        return _('presently addicted')
                if self._payload[self._idx['use_type']] == 3:
                        return _('previously addicted')

  ### Methods

  `def delete(self)`
    Expand source code

        def delete(self):
                return delete_substance_intake(pk_intake = self._payload[self._idx['pk_intake']])

  `def format_as_multiple_lines(self, left_margin: int = 0, date_format: str = '%Y %b %d', allergy=None, show_all_product_components: bool = False, include_instructions: bool = False, include_loincs: bool = False, eol='\n')`
    Expand source code

        def format_as_multiple_lines(self, left_margin:int=0, date_format:str='%Y %b %d', allergy=None, show_all_product_components:bool=False, include_instructions:bool=False, include_loincs:bool=False, eol='\n'):# -> list | str:
                lines = []
                # header
                status = _('inactive')
                if self._payload[self._idx['discontinued']] is None:
                        status = _('active')
                elif self._payload[self._idx['discontinued']] > gmDateTime.pydt_now_here():
                        status = _('active')
                lines.append(_('Substance intake entry (%s)   [#%s]                     ') % (
                        status,
                        self._payload[self._idx['pk_intake']]
                ))
                # caveat
                if allergy:
                        certainty = gmTools.bool2subst(allergy['definite'], _('definite'), _('suspected'))
                        lines.append('')
                        lines.append(' !! ---- Cave ---- !!')
                        lines.append(' %s (%s): %s (%s)' % (
                                allergy['l10n_type'],
                                certainty,
                                allergy['descriptor'],
                                gmTools.coalesce(allergy['reaction'], '')[:40]
                        ))
                        lines.append('')
                # what
                lines.append(' ' + _('Substance: %s   [#%s]') % (self._payload[self._idx['substance']], self._payload[self._idx['pk_substance']]))
                if self._payload[self._idx['l10n_preparation']]:
                        lines.append(' ' + _('Preparation: %s') % self._payload[self._idx['l10n_preparation']])
                if self._payload[self._idx['amount']]:
                        lines.append(' ' + _('Amount per dose: %s %s') % (
                                self._payload[self._idx['amount']],
                                self._get_formatted_units(short = False)
                        ))
                # codes
                if self._payload[self._idx['atc_substance']]:
                        lines.append(_(' ATC (substance): %s') % self._payload[self._idx['atc_substance']])
                if include_loincs and self._payload[self._idx['loincs']]:
                        lines.append('%s %s' % (' ' * left_margin, _('LOINCs to monitor:')))
                        lines.extend(['%s%s%s%s' % (
                                ' ' * (left_margin + 1),
                                l['loinc'],
                                gmTools.coalesce(l['max_age_str'], '', ': ' + _('once within %s')),
                                gmTools.coalesce(l['comment'], '', ' (%s)')
                        ) for l in self._payload[self._idx['loincs']]
                ])
                lines.append('')
                lines.append('')
                # drug product
                product = self.containing_drug
                if product:
                        lines.append(_(' Product name: %s   [#%s]') % (self._payload[self._idx['drug_product']], self._payload[self._idx['pk_drug_product']]))
                        if self._payload[self._idx['atc_drug']]:
                                lines.append(_(' ATC (drug): %s') % self._payload[self._idx['atc_drug']])
                        if show_all_product_components and (len(product['components']) > 1):
                                for comp in product['components']:
                                        if comp['pk_substance'] == self._payload[self._idx['substance']]:
                                                continue
                                        lines.append('  ' + _('Other component: %s %s %s') % (
                                                comp['substance'],
                                                comp['amount'],
                                                format_units(comp['unit'], comp['dose_unit'])
                                        ))
                                        if comp['intake_instructions']:
                                                lines.append('   ' + _('Intake: %s') % comp['intake_instructions'])
                                        if include_loincs and comp['loincs']:
                                                lines.append('   ' + _('LOINCs to monitor:'))
                                                lines.extend(['    %s%s%s' % (
                                                        l['loinc'],
                                                        gmTools.coalesce(l['max_age_str'], '', ': %s'),
                                                        gmTools.coalesce(l['comment'], '', ' (%s)')
                                                ) for l in comp['loincs'] ])
                        lines.append('')
                # regimen
                if self._payload[self._idx['schedule']]:
                        lines.append(_(' Regimen: %s') % self._payload[self._idx['schedule']])
                if self._payload[self._idx['planned_duration']] is None:
                        duration = ''
                else:
                        duration = ' %s %s' % (gmTools.u_arrow2right, gmDateTime.format_interval(self._payload[self._idx['planned_duration']], gmDateTime.acc_days))
                lines.append(_(' Started %s%s') % (self.medically_formatted_start, duration))
                if self._payload[self._idx['discontinued']]:
                        lines.append(_(' Discontinued %s') % (
                                gmDateTime.pydt_strftime (
                                        self._payload[self._idx['discontinued']],
                                        format = date_format,
                                        accuracy = gmDateTime.acc_days
                                )
                        ))
                if self._payload[self._idx['discontinue_reason']]:
                        lines.append(_(' Reason: %s') % self._payload[self._idx['discontinue_reason']])
                lines.append('')
                # further notes
                lines.append(_(' Episode: %s')% self._payload[self._idx['episode']])
                if self._payload[self._idx['health_issue']]:
                        lines.append(_(' Health issue: %s') % self._payload[self._idx['health_issue']])
                if self._payload[self._idx['notes4provider']]:
                        lines.append(_(' Provider notes: %s') % self._payload[self._idx['notes4provider']])
                if self._payload[self._idx['notes4patient']]:
                        lines.append(_(' Patient advice: %s') % self._payload[self._idx['notes4patient']])
                if self._payload[self._idx['intake_instructions']]:
                        lines.append(' ' + _('Intake: %s') % self._payload[self._idx['intake_instructions']])
                lines.append('')
                lines.append(_('Revision: #%(row_ver)s, %(mod_when)s by %(mod_by)s.') % {
                        'row_ver': self._payload[self._idx['row_version']],
                        'mod_when': gmDateTime.pydt_strftime(self._payload[self._idx['modified_when']]),
                        'mod_by': self._payload[self._idx['modified_by']]
                })
                if eol is None:
                        return lines

                return eol.join(lines)

  `def format_as_multiple_lines_abuse(self, left_margin=0, date_format='%Y %b %d', include_metadata=True, eol='\n')`
    Expand source code

        def format_as_multiple_lines_abuse(self, left_margin=0, date_format='%Y %b %d', include_metadata=True, eol='\n'):
                lines = []
                if include_metadata:
                        lines.append(_('Substance abuse entry                                              [#%s]') % self._payload[self._idx['pk_intake']])
                lines.append(' ' + _('Substance: %s [#%s]%s') % (
                        self._payload[self._idx['substance']],
                        self._payload[self._idx['pk_substance']],
                        gmTools.coalesce(self._payload[self._idx['atc_substance']], '', ' ATC %s')
                ))
                lines.append(' ' + _('Use type: %s') % self.use_type_string)
                lines.append(' ' + _('Last checked: %s') % gmDateTime.pydt_strftime(self._payload[self._idx['last_checked_when']], '%Y %b %d'))
                if self._payload[self._idx['discontinued']]:
                        lines.append(_(' Discontinued %s') % (
                                gmDateTime.pydt_strftime (
                                        self._payload[self._idx['discontinued']],
                                        format = date_format,
                                        accuracy = gmDateTime.acc_days
                                )
                        ))
                if self._payload[self._idx['notes4provider']]:
                        lines.append(_(' Notes: %s') % self._payload[self._idx['notes4provider']])
                if include_metadata:
                        lines.append('')
                        lines.append(_('Revision: #%(row_ver)s, %(mod_when)s by %(mod_by)s.') % {
                                'row_ver': self._payload[self._idx['row_version']],
                                'mod_when': gmDateTime.pydt_strftime(self._payload[self._idx['modified_when']]),
                                'mod_by': self._payload[self._idx['modified_by']]
                        })
                if eol is None:
                        return lines

                return eol.join(lines)

  `def format_as_single_line(self, left_margin=0, date_format='%Y %b %d')`
    Expand source code

        def format_as_single_line(self, left_margin=0, date_format='%Y %b %d'):

                if self._payload[self._idx['planned_duration']] is not None:
                        duration = gmDateTime.format_interval (
                                self._payload[self._idx['planned_duration']],
                                accuracy_wanted = gmDateTime.acc_days
                        )
                elif self._payload[self._idx['discontinued']] is not None:
                        duration = gmDateTime.pydt_strftime(self._payload[self._idx['discontinued']], date_format)
                else:
                        duration = _('?')
                line = '%s%s (%s %s): %s %s%s' % (
                        ' ' * left_margin,
                        self.medically_formatted_start,
                        gmTools.u_arrow2right,
                        duration,
                        self._payload[self._idx['substance']],
                        self._payload[self._idx['amount']],
                        self.formatted_units
                )

                return line

  `def format_as_single_line_abuse(self, left_margin=0, date_format='%Y %b %d')`
    Expand source code

        def format_as_single_line_abuse(self, left_margin=0, date_format='%Y %b %d'):
                return '%s%s: %s (%s)' % (
                        ' ' * left_margin,
                        self._payload[self._idx['substance']],
                        self.use_type_string,
                        gmDateTime.pydt_strftime(self._payload[self._idx['last_checked_when']], '%b %Y')
                )

  `def format_maximum_information(self, patient=None)`
    Expand source code

        def format_maximum_information(self, patient=None):
                return self.format (
                        single_line = False,
                        show_all_product_components = True,
                        include_metadata = True,
                        date_format = '%Y %b %d',
                        include_instructions = True,
                        include_loincs = True
                ).split('\n')

  `def turn_into_allergy(self, encounter_id=None, allergy_type='allergy')`
    Expand source code

        def turn_into_allergy(self, encounter_id=None, allergy_type='allergy'):
                allg = gmAllergy.create_allergy (
                        allergene = self._payload[self._idx['substance']],
                        allg_type = allergy_type,
                        episode_id = self._payload[self._idx['pk_episode']],
                        encounter_id = encounter_id
                )
                allg['substance'] = gmTools.coalesce (
                        self._payload[self._idx['drug_product']],
                        self._payload[self._idx['substance']]
                )
                allg['reaction'] = self._payload[self._idx['discontinue_reason']]
                allg['atc_code'] = gmTools.coalesce(self._payload[self._idx['atc_substance']], self._payload[self._idx['atc_drug']])
                if self._payload[self._idx['external_code_product']] is not None:
                        allg['substance_code'] = '%s::::%s' % (self._payload[self._idx['external_code_type_product']], self._payload[self._idx['external_code_product']])

                if self._payload[self._idx['pk_drug_product']] is None:
                        allg['generics'] = self._payload[self._idx['substance']]
                else:
                        comps = [ c['substance'] for c in self.containing_drug.components ]
                        if len(comps) == 0:
                                allg['generics'] = self._payload[self._idx['substance']]
                        else:
                                allg['generics'] = '; '.join(comps)

                allg.save()
                return allg

  ### Inherited members

  - `cBusinessDBObject`:
    - `fields_as_dict`
    - `format`
    - `get_fields`
    - `get_patient`
    - `get_updatable_fields`
    - `is_modified`
    - `patient_pk`
    - `refetch_payload`
    - `same_payload`
    - `save`
    - `save_payload`
    - `staff_id`
`class cSubstanceIntakeObjectMatchProvider (queries=None, context=None)`

  Match provider which searches matches in possibly several database tables.

  queries: - a list of unicode strings - each string is a query - each string must contain: "… WHERE %(fragment_condition)s …" - each string can contain in the where clause: "… %()s …" - each query must return (data, list_label, field_label)

  context definitions to be used in the queries, example: {'ctxt_key1': {'where_part': 'AND country = %(country)s', 'placeholder': 'country'}}

  client code using .set_context() must use the 'placeholder': /.set_context('country', 'Germany')

  full example query:

          query = u" " "
                  SELECT DISTINCT ON (list_label)
                          pk_encounter
                                  AS data,
                          to_char(started, 'YYYY Mon DD (HH24:MI)') || ': ' || l10n_type || ' [#' || pk_encounter || ']'
                                  AS list_label,
                          to_char(started, 'YYYY Mon DD') || ': ' || l10n_type
                                  AS field_label
                  FROM
                          clin.v_pat_encounters
                  WHERE
                          (
                                  l10n_type %(fragment_condition)s
                                          OR
                                  type %(fragment_condition)s
                          )       %(ctxt_patient)s
                  ORDER BY
                          list_label
                  LIMIT
                          30
          " " "
          context = {'ctxt_patient': {
                  'where_part': u'AND pk_patient = %(PLACEHOLDER)s',
                  'placeholder': u'PLACEHOLDER'
          }}
          self.mp = gmMatchProvider.cMatchProvider_SQL2(queries = query, context = context)
          self.set_context(context = 'PLACEHOLDER', val = '<THE VALUE>')

  _SQL_data2match: SQL to retrieve a match by, say, primary key wherein the only keyword argument is 'pk'

  Expand source code

      class cSubstanceIntakeObjectMatchProvider(gmMatchProvider.cMatchProvider_SQL2):

              # (product name) -> product
              _SQL_drug_product_by_name = """
                      SELECT
                              pk_drug_product
                                      AS data,
                              (product || ' (' || preparation || ')' || coalesce(' [' || atc || ']', ''))
                                      AS list_label,
                              (product || ' (' || preparation || ')' || coalesce(' [' || atc || ']', ''))
                                      AS field_label
                      FROM ref.v_drug_products
                      WHERE
                              is_vaccine IS FALSE
                                      AND
                              product %(fragment_condition)s
                      LIMIT 50
              """
              # (component name) -> product
              _SQL_drug_product_by_component_name = """
                      SELECT
                              pk_drug_product
                                      AS data,
                              (product || ' (' || preparation || ' %s ' || amount || unit || coalesce('/' || dose_unit, '') || ' ' || substance || ')' || coalesce(' [' || atc_drug || ']', ''))
                                      AS list_label,
                              (product || ' (' || preparation || ' %s ' || amount || unit || coalesce('/' || dose_unit, '') || ' ' || substance || ')' || coalesce(' [' || atc_drug || ']', ''))
                                      AS field_label
                      FROM
                              ref.v_drug_components
                      WHERE substance %%(fragment_condition)s
                      LIMIT 50
              """ % (
                      _('w/'),
                      _('w/')
              )
              # (product name + component strength) -> product
              _SQL_drug_product_by_name_and_strength = """
                      SELECT
                              pk_drug_product
                                      AS data,
                              (product || ' (' || preparation || ' %s ' || amount || unit || coalesce('/' || dose_unit, '') || ' ' || substance || ')' || coalesce(' [' || atc_drug || ']', ''))
                                      AS list_label,
                              (product || ' (' || preparation || ' %s ' || amount || unit || coalesce('/' || dose_unit, '') || ' ' || substance || ')' || coalesce(' [' || atc_drug || ']', ''))
                                      AS field_label
                      FROM
                              (SELECT *, product AS description FROM ref.v_drug_components) AS _components
                      WHERE %%(fragment_condition)s
                      LIMIT 50
              """ % (
                      _('w/'),
                      _('w/')
              )
              # (component name + component strength) -> product
              _SQL_drug_product_by_component_name_and_strength = """
                      SELECT
                              pk_drug_product
                                      AS data,
                              (product || ' (' || preparation || ' %s ' || amount || unit || coalesce('/' || dose_unit, '') || ' ' || substance || ')' || coalesce(' [' || atc_drug || ']', ''))
                                      AS list_label,
                              (product || ' (' || preparation || ' %s ' || amount || unit || coalesce('/' || dose_unit, '') || ' ' || substance || ')' || coalesce(' [' || atc_drug || ']', ''))
                                      AS field_label
                      FROM
                              (SELECT *, substance AS description FROM ref.v_drug_components) AS _components
                      WHERE %%(fragment_condition)s
                      LIMIT 50
              """ % (
                      _('w/'),
                      _('w/')
              )
              # non-drug substance name
              _SQL_substance_name = """
                      SELECT DISTINCT ON (field_label)
                              data, list_label, field_label
                      FROM (
                              SELECT DISTINCT ON (term)
                                      NULL::integer
                                              AS data,
                                      term || ' (ATC: ' || code || ')'
                                              AS list_label,
                                      term
                                              AS field_label
                              FROM
                                      ref.atc
                              WHERE
                                      lower(term) %(fragment_condition)s

                              UNION ALL

                              SELECT DISTINCT ON (description)
                                      NULL::integer
                                              AS data,
                                      description || coalesce(' (ATC: ' || atc || ')', '')
                                              AS list_label,
                                      description
                                              AS field_label
                              FROM
                                      ref.substance
                              WHERE
                                      lower(description) %(fragment_condition)s
                      ) AS nondrug_substances
                      WHERE NOT EXISTS (
                              SELECT 1 FROM ref.v_drug_components WHERE lower(substance) = lower(nondrug_substances.field_label)
                      )
                      LIMIT 30
              """

              # this query UNIONs together individual queries
              _SQL_regex_master_query = """
                      SELECT
                              data, field_label, list_label
                      FROM ((%s) UNION (%s))
                              AS _union
                      ORDER BY list_label
                      LIMIT 50
              """ % (
                      _SQL_drug_product_by_name_and_strength,
                      _SQL_drug_product_by_component_name_and_strength
              )
              _SQL_nonregex_master_query = """
                      SELECT
                              data, field_label, list_label
                      FROM ((%s) UNION (%s) UNION (%s))
                              AS _union
                      ORDER BY list_label
                      LIMIT 50
              """ % (
                      _SQL_drug_product_by_name,
                      _SQL_drug_product_by_component_name,
                      _SQL_substance_name
              )

              _REGEX_name_and_strength = regex.compile(r'^\D+\s*\d+$', regex.UNICODE)

              #--------------------------------------------------------
              def getMatchesByPhrase(self, aFragment):
                      """Return matches for aFragment at start of phrases."""

                      if cSubstanceIntakeObjectMatchProvider._REGEX_name_and_strength.match(aFragment):
                              self._queries = [cSubstanceIntakeObjectMatchProvider._SQL_regex_master_query]
                              fragment_condition = """description ILIKE %(desc)s
                                      AND
                              amount::text ILIKE %(amount)s"""
                              self._args['desc'] = '%s%%' % regex.sub(r'\s*\d+$', '', aFragment)
                              self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                      else:
                              self._queries = [ cSubstanceIntakeObjectMatchProvider._SQL_nonregex_master_query ]
                              fragment_condition = "ILIKE %(fragment)s"
                              self._args['fragment'] = "%s%%" % aFragment

                      return self._find_matches(fragment_condition)

              #--------------------------------------------------------
              def getMatchesByWord(self, aFragment):
                      """Return matches for aFragment at start of words inside phrases."""

                      if cSubstanceIntakeObjectMatchProvider._REGEX_name_and_strength.match(aFragment):
                              self._queries = [cSubstanceIntakeObjectMatchProvider._SQL_regex_master_query]

                              desc = regex.sub(r'\s*\d+$', '', aFragment)
                              desc = gmPG2.sanitize_pg_regex(expression = desc, escape_all = False)

                              fragment_condition = """description ~* %(desc)s
                                      AND
                              amount::text ILIKE %(amount)s"""

                              self._args['desc'] = "( %s)|(^%s)" % (desc, desc)
                              self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                      else:
                              self._queries = [ cSubstanceIntakeObjectMatchProvider._SQL_nonregex_master_query ]
                              fragment_condition = "~* %(fragment)s"
                              aFragment = gmPG2.sanitize_pg_regex(expression = aFragment, escape_all = False)
                              self._args['fragment'] = "( %s)|(^%s)" % (aFragment, aFragment)

                      return self._find_matches(fragment_condition)

              #--------------------------------------------------------
              def getMatchesBySubstr(self, aFragment):
                      """Return matches for aFragment as a true substring."""

                      if cSubstanceIntakeObjectMatchProvider._REGEX_name_and_strength.match(aFragment):
                              self._queries = [cSubstanceIntakeObjectMatchProvider._SQL_regex_master_query]
                              fragment_condition = """description ILIKE %(desc)s
                                      AND
                              amount::text ILIKE %(amount)s"""
                              self._args['desc'] = '%%%s%%' % regex.sub(r'\s*\d+$', '', aFragment)
                              self._args['amount'] = '%s%%' % regex.sub(r'^\D+\s*', '', aFragment)
                      else:
                              self._queries = [ cSubstanceIntakeObjectMatchProvider._SQL_nonregex_master_query ]
                              fragment_condition = "ILIKE %(fragment)s"
                              self._args['fragment'] = "%%%s%%" % aFragment

                      return self._find_matches(fragment_condition)

  ### Ancestors

  - cMatchProvider_SQL2
  - cMatchProvider

  ### Inherited members

  - `cMatchProvider_SQL2`:
    - `getAllMatches`
    - `getMatches`
    - `getMatchesByPhrase`
    - `getMatchesBySubstr`
    - `getMatchesByWord`
    - `setThresholds`
    - `set_context`