Mike Bayer 741af02893 repair yield_per for non-SS dialects and add new options ...

Implemented new :paramref:`_engine.Connection.execution_options.yield_per`
execution option for :class:`_engine.Connection` in Core, to mirror that of
the same :ref:`yield_per <orm_queryguide_yield_per>` option available in
the ORM. The option sets both the
:paramref:`_engine.Connection.execution_options.stream_results` option at
the same time as invoking :meth:`_engine.Result.yield_per`, to provide the
most common streaming result configuration which also mirrors that of the
ORM use case in its usage pattern.

Fixed bug in :class:`_engine.Result` where the usage of a buffered result
strategy would not be used if the dialect in use did not support an
explicit "server side cursor" setting, when using
:paramref:`_engine.Connection.execution_options.stream_results`. This is in
error as DBAPIs such as that of SQLite and Oracle already use a
non-buffered result fetching scheme, which still benefits from usage of
partial result fetching.   The "buffered" strategy is now used in all
cases where :paramref:`_engine.Connection.execution_options.stream_results`
is set.

Added :meth:`.FilterResult.yield_per` so that result implementations
such as :class:`.MappingResult`, :class:`.ScalarResult` and
:class:`.AsyncResult` have access to this method.

Fixes: #8199

Change-Id: I6dde3cbe483a1bf81e945561b60f4b7d1c434750

2022-07-01 12:14:02 -04:00

..

__init__.py

…

test_engine_py3k.py

repair yield_per for non-SS dialects and add new options

2022-07-01 12:14:02 -04:00

test_scoping_py3k.py

use code generation for scoped_session

2022-04-12 02:09:42 +00:00

test_session_py3k.py

pep484: schema API

2022-04-15 10:29:23 -04:00