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""" |
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byceps.services.consent.subject_service |
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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:Copyright: 2006-2020 Jochen Kupperschmidt |
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:License: Modified BSD, see LICENSE for details. |
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""" |
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from typing import Dict, Optional, Set |
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from ...database import db |
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from .models.consent import Consent as DbConsent |
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from .models.subject import Subject as DbSubject |
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from .transfer.models import Subject, SubjectID |
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class UnknownSubjectId(ValueError): |
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pass |
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def create_subject( |
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name: str, |
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title: str, |
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type_: str, |
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checkbox_label: str, |
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checkbox_link_target: Optional[str], |
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) -> SubjectID: |
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"""Create a new subject.""" |
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subject = DbSubject( |
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name, title, type_, checkbox_label, checkbox_link_target |
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) |
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db.session.add(subject) |
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db.session.commit() |
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return _db_entity_to_subject(subject) |
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def get_subjects(subject_ids: Set[SubjectID]) -> Set[Subject]: |
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"""Return the subjects.""" |
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rows = DbSubject.query \ |
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.filter(DbSubject.id.in_(subject_ids)) \ |
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.all() |
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subjects = {_db_entity_to_subject(row) for row in rows} |
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_check_for_unknown_subject_ids(subject_ids, subjects) |
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return subjects |
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def _check_for_unknown_subject_ids( |
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subject_ids: Set[SubjectID], subjects: Set[Subject] |
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) -> None: |
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"""Raise exception on unknown IDs.""" |
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found_subject_ids = {subject.id for subject in subjects} |
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unknown_subject_ids = subject_ids.difference(found_subject_ids) |
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if unknown_subject_ids: |
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unknown_subject_ids_str = ', '.join(map(str, unknown_subject_ids)) |
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raise UnknownSubjectId( |
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f'Unknown subject IDs: {unknown_subject_ids_str}' |
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) |
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def get_subjects_with_consent_counts() -> Dict[Subject, int]: |
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"""Return all subjects.""" |
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rows = db.session \ |
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.query( |
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DbSubject, |
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db.func.count(DbConsent.user_id) |
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) \ |
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.outerjoin(DbConsent) \ |
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.group_by(DbSubject.id) \ |
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.all() |
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return { |
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_db_entity_to_subject(subject): consent_count |
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for subject, consent_count in rows |
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} |
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def _db_entity_to_subject(subject: DbSubject) -> Subject: |
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return Subject( |
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subject.id, |
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subject.name, |
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subject.title, |
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subject.type_, |
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subject.checkbox_label, |
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subject.checkbox_link_target, |
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) |
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byceps /
byceps
