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Added PRAGMA foreign_keys = ON before deleting entities on SQLite

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SQLite doesn't enable foreign keys cascade on delete by default.
This commit is contained in:
Fabio Manganiello 2022-11-13 01:18:45 +01:00
parent f90d84a3d4
commit 24f5a8283c
Signed by: blacklight
GPG key ID: D90FBA7F76362774
1 changed files with 7 additions and 2 deletions
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9
platypush/plugins/entities/__init__.py
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@ -4,7 +4,7 @@ from time import time
from typing import Optional, Any, Collection, Mapping
from sqlalchemy import or_
from sqlalchemy.orm import make_transient
from sqlalchemy.orm import make_transient, Session
from platypush.config import Config
from platypush.context import get_plugin, get_bus
@ -26,7 +26,7 @@ class EntitiesPlugin(Plugin):
def __init__(self, **kwargs):
super().__init__(**kwargs)
def _get_session(self, *args, **kwargs):
def _get_session(self, *args, **kwargs) -> Session:
db = get_plugin('db')
assert db
return db.get_session(*args, **kwargs)
@ -195,6 +195,11 @@ class EntitiesPlugin(Plugin):
:return: The payload of the deleted entities.
"""
with self._get_session(locked=True) as session:
if str(session.connection().engine.url).startswith('sqlite://'):
# SQLite requires foreign_keys to be explicitly enabled
# in order to proper manage cascade deletions
session.execute('PRAGMA foreign_keys = ON')
entities: Collection[Entity] = (
session.query(Entity).filter(Entity.id.in_(entities)).all()
)