[orm] [bug] [regression] Fixed regression involving lazy='dynamic' loader in conjunction with a
detached object. The previous behavior was that the dynamic loader upon
calling methods like .all() returns empty lists for detached objects
without error, this has been restored; however a warning is now emitted as
this is not the correct result. Other dynamic loader scenarios correctly
raise DetachedInstanceError.
[engine] [usecase] [orm] Applied consistent behavior to the use case of
calling .commit() or .rollback() inside of an existing
.begin() context manager, with the addition of potentially
emitting SQL within the block subsequent to the commit or rollback.
This change continues upon the change first added in
#6155 where the use case of calling "rollback" inside of
a .begin() contextmanager block was proposed:
- calling `.commit()` or `.rollback()` will now be allowed
without error or warning within all scopes, including
that of legacy and future `_engine.Engine`, ORM
`_orm.Session`, asyncio `AsyncEngine`. Previously,
the `_orm.Session` disallowed this.
The remaining scope of the context manager is then closed;
when the block ends, a check is emitted to see if the transaction
was already ended, and if so the block returns without action.
It will now raise an error if subsequent SQL of any kind
is emitted within the block, after.commit() or
.rollback() is called. The block should be closed as
the state of the executable object would otherwise be undefined
in this state.
[engine] [bug] [regression] Established a deprecation path for calling upon the
_cursor.CursorResult.keys() method for a statement that returns no
rows to provide support for legacy patterns used by the "records" package
as well as any other non-migrated applications. Previously, this would
raise ResourceClosedException unconditionally in the same way as
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Bumps sqlalchemy from 1.3.22 to 1.4.14.
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