delta/python-packages/sqlalchemy.git/lib/sqlalchemy/orm/persistence.py, branch allow_multi_backends

Check for column object in eval_none, not propkey

2017-07-18T19:04:36+00:00

Fixed bug involving JSON NULL evaluation logic added in 1.1 as part
of :ticket:`3514` where the logic would not accommodate ORM
mapped attributes named differently from the :class:`.Column`
that was mapped.

Change-Id: I1848afcfb63ad7f074f315d8d3097666069b42be
Fixes: #4031

Add all versioning logic to _post_update()

2017-06-15T22:58:29+00:00

An UPDATE emitted as a result of the
:paramref:`.relationship.post_update` feature will now integrate with
the versioning feature to both bump the version id of the row as well
as assert that the existing version number was matched.

Fixes: #3496
Change-Id: I865405dd6069f1c1e3b0d27a4980e9374e059f97

Re-send column value w/ onupdate default during post-update

2017-06-06T17:54:33+00:00

Adjusted the behavior of post_update such that if a column with
an "onupdate" default has received an explicit value for
INSERT, re-send the same data during a post-update UPDATE so
that the value remains in effect, rather than an onupdate
overwriting it.

Change-Id: I26bccb6f957dcad07a2bcbda2dd9e14c60b92b06
Fixes: #3471

Implement _postfetch_post_update to expire/refresh onupdates in post_update

2017-06-05T22:39:08+00:00

Fixed bug involving the :paramref:`.relationship.post_update` feature
where a column "onupdate" value would not result in expiration or
refresh of the corresponding object attribute, if the UPDATE for the
row were a result of the "post update" feature.  Additionally, the
:meth:`.SessionEvents.refresh_flush` event is now emitted for these
attributes when refreshed within the flush.

Fixes: #3472
Change-Id: I5ee2d715e773a306ab1e8143e4382c228991ac78

detect and raise for version_id is NULL

2017-05-22T20:25:54+00:00

The versioning feature does not support NULL for the version counter.
An exception is now raised if the version id is programmatic and
was set to NULL for an UPDATE.  Pull request courtesy Diana Clarke.

Fixes: #3673
Change-Id: I8b0da56234a7c7f5e7fde35536e09a6216a5e48a

Detect no params w/ manual version_id counter and set to itself

2017-05-22T18:47:26+00:00

Fixed bug where programmatic version_id counter in conjunction with
joined table inheritance would fail if the version_id counter
were not actually incremented and no other values on the base table
were modified, as the UPDATE would have an empty SET clause.  Since
programmatic version_id where version counter is not incremented
is a documented use case, this specific condition is now detected
and the UPDATE now sets the version_id value to itself, so that
concurrency checks still take place.

Change-Id: I80e385bffeed4851cc20131cbe983c173a46f655
Fixes: #3996

Add conditionals specific to deferred for expire ro properties

2017-05-10T18:21:07+00:00

Fixed bug where a :func:`.column_property` that is also marked as
"deferred" would be marked as "expired" during a flush, causing it
to be loaded along with the unexpiry of regular attributes even
though this attribute was never accessed.

Change-Id: Iaa9e17b66ece30a8e729e4af746b31ff99b1ec9a
Fixes: #3984

Support hybrids/composites with bulk updates

2017-03-22T21:44:56+00:00

The :meth:`.Query.update` method can now accommodate both
hybrid attributes as well as composite attributes as a source
of the key to be placed in the SET clause.   For hybrids, an
additional decorator :meth:`.hybrid_property.update_expression`
is supplied for which the user supplies a tuple-returning function.

Change-Id: I15e97b02381d553f30b3301308155e19128d2cfb
Fixes: #3229

New features from python 2.7

2017-03-17T18:19:21+00:00

After bump minimum supported version to 2.7 (1da9d3752160430c91534a8868ceb8c5ad1451d4), we can use new syntax.

Change-Id: Ib064c75a00562e641d132f9c57e5e69744200e05
Pull-request: https://github.com/zzzeek/sqlalchemy/pull/347

Check for columns not part of mapping, correct mapping for eager_defaults

2017-02-09T15:49:13+00:00

Fixed two closely related bugs involving the mapper eager_defaults
flag in conjunction with single-table inheritance; one where the
eager defaults logic would inadvertently try to access a column
that's part of the mapper's "exclude_properties" list (used by
Declarative with single table inheritance) during the eager defaults
fetch, and the other where the full load of the row in order to
fetch the defaults would fail to use the correct inheriting mapper.

Fixes: #3908
Change-Id: Ie745174c917d512e2c46d9e3cc14512cde53cc9a