delta/python-packages/sqlalchemy.git/lib/sqlalchemy/orm/state.py, branch pr_github_383

Enable multi-level selectin polymorphic loading

2017-08-07T19:05:00+00:00

Change-Id: Icc742bbeecdb7448ce84caccd63e086af16e81c1
Fixes: #4026

Raise on flag_modified() for non-present attribute

2017-03-21T21:35:12+00:00

The :func:`.attributes.flag_modified` function now raises
:class:`.InvalidRequestError` if the named attribute key is not
present within the object, as this is assumed to be present
in the flush process.  To mark an object "dirty" for a flush
without referring to any specific attribute, the
:func:`.attributes.flag_dirty` function may be used.

Change-Id: I6c64e4d253c239e38632f38c27bb16e68fe8dfbe
Fixes: #3753

update for 2017 copyright

2017-01-04T17:39:24+00:00

Change-Id: I4e8c2aa8fe817bb2af8707410fa0201f938781de

Ensure strong ref to obj before calling persistent_to_deleted, others

2016-10-03T16:25:42+00:00

Add checks in spots where state.obj() might be late-GC'ed before
we get a chance to call the event.   There may be more cases
of these which we should address as they come up.  The Session
should always be maintaining strong refs to objects that have
pending operations left on them, so for these cases we need
to ensure that ref remains long enough for the event to be called.

Change-Id: I1a7c7bc57130acc11f54ad55924af2e36ac75101
Fixes: #3808

- don't load deferred columns on unexpire for merge with load=False,

2016-04-06T17:28:25+00:00

fixes #3488

Change-Id: Ic9577b800e4a4e2465ec7f3a2e95bd231f5337ee
Co-Authored-By: Mike Bayer

- fully hyperlink the docstring for make_transient

2016-02-08T23:05:51+00:00

- establish make_transient and make_transient_to_detached as special-use,
advanced use only functions
- list all conditions under make_transient() under which an attribute
will not be loaded and establish that make_transient() does not attempt
to load all attributes before detaching the object from its
session, fixes #3640

- happy new year

2016-01-29T16:20:22+00:00

- reduce some callcounts within the new events

2015-09-03T15:11:25+00:00

- The :class:`.SessionEvents` suite now includes events to allow

2015-09-02T21:55:15+00:00

unambiguous tracking of all object lifecycle state transitions
in terms of the :class:`.Session` itself, e.g. pending,
transient,  persistent, detached.   The state of the object
within each event is also defined.
fixes #2677
- Added a new session lifecycle state :term:`deleted`.  This new state
represents an object that has been deleted from the :term:`persistent`
state and will move to the :term:`detached` state once the transaction
is committed.  This resolves the long-standing issue that objects
which were deleted existed in a gray area between persistent and
detached.   The :attr:`.InstanceState.persistent` accessor will
**no longer** report on a deleted object as persistent; the
:attr:`.InstanceState.deleted` accessor will instead be True for
these objects, until they become detached.
- The :paramref:`.Session.weak_identity_map` parameter is deprecated.
See the new recipe at :ref:`session_referencing_behavior` for
an event-based approach to maintaining strong identity map behavior.
references #3517

- repair the inspection hook in sqltypes to not be fooled

2015-08-22T20:01:23+00:00

by mock and other __getattr__ impostors