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Mike Bayer
c46279d1c2
Added new attribute :attr:`_orm.ORMExecuteState.is_column_load` to indicate that a :meth:`_orm.SessionEvents.do_orm_execute` handler that a particular operation is a primary-key-directed column attribute load, such as from an expiration or a deferred attribute, and that WHERE criteria or additional loader options should not be added to the query. This has been added to the examples which illustrate the :func:`_orm.with_loader_criteria` option. The :func:`_orm.with_loader_criteria` option has been modified so that it will never apply its criteria to the SELECT statement for an ORM refresh operation, such as that invoked by :meth:`_orm.Session.refresh` or whenever an expired attribute is loaded. These queries are only against the primary key row of the object that is already present in memory so there should not be additional criteria added. Added doc caveats for using lambdas. Added test coverage for most ORMExecuteState flags and fixed a few basic access issues. Change-Id: I6707e4cf0dc95cdfb8ce93e5ca22ead86074baa7 References: #5760 Fixes: #5761 Fixes: #5762