a C g@sddlmZddlmZmZmZmZddlmZddl Z ddl m Z ddl m Z e eddd Zedeeeeeefd d d Zeeefed ddZdS))contextmanager)Any GeneratorOptionalUnion)UUIDN) transaction)BaseDatabaseWrapper) connectionreturncCs&|jdkrdStjdkrdS|jdkS)z Determine whether the backend requires manual transaction handling. Extracted from `exclusive_transaction` for unit testing purposes. ZsqliteFTZ EXCLUSIVE)vendordjangoVERSIONZtransaction_mode)r rc/var/www/lab.imftr.de/x/nb_venv/lib/python3.9/site-packages/django_tasks/backends/database/utils.py0connection_requires_manual_exclusive_transaction s   r)usingr c cst|}t|rztjdkr$td|<}|dzdVW|dn |d0Wdq1sn0Yn2tj|ddVWdn1s0YdS)z Wrapper around `transaction.atomic` which ensures transactions on SQLite are exclusive. This functionality is built-in to Django 5.1+. r zTransactions must be EXCLUSIVEzBEGIN EXCLUSIVENZCOMMIT)r) rget_connectionrrr RuntimeErrorcursorexecuteZatomic)rr crrrexclusive_transactions    8r)valr cCst|trt|}t|S)z Normalize a UUID into its dashed representation. This works around engines like MySQL which don't store values in a uuid field, and thus drops the dashes. ) isinstancestrr)rrrrnormalize_uuid3s r)N) contextlibrtypingrrrruuidrrZ django.dbrZdjango.db.backends.base.baser boolrrrrrrrrs     "