Nils Philippsen [Mon, 9 Nov 2015 13:50:23 +0000 (14:50 +0100)]
py2k: accept unicode literals on :func:`backref`, too
Fixed bug where in Py2K a unicode literal would not be accepted as the
string name of a class or other argument within declarative using
:func:`.backref` on :func:`.relationship`.
Mike Bayer [Sat, 21 Nov 2015 21:36:50 +0000 (16:36 -0500)]
- Fixed joinedload bug which would occur when a. the query includes
limit/offset criteria that forces a subquery b. the relationship
uses "secondary" c. the primaryjoin of the relationship refers to
a column that is either not part of the primary key, or is a PK
col in a joined-inheritance subclass table that is under a different
attribute name than the parent table's primary key column d. the
query defers the columns that are present in the primaryjoin, typically
via not being included in load_only(); the necessary column(s) would
not be present in the subquery and produce invalid SQL.
fixes #3592
Mike Bayer [Thu, 19 Nov 2015 20:45:17 +0000 (15:45 -0500)]
- A rare case which occurs when a :meth:`.Session.rollback` fails in the
scope of a :meth:`.Session.flush` operation that's raising an
exception, as has been observed in some MySQL SAVEPOINT cases, prevents
the original database exception from being observed when it was
emitted during flush, but only on Py2K because Py2K does not support
exception chaining; on Py3K the originating exception is chained. As
a workaround, a warning is emitted in this specific case showing at
least the string message of the original database error before we
proceed to raise the rollback-originating exception.
fixes #2696
Mike Bayer [Thu, 19 Nov 2015 20:24:22 +0000 (15:24 -0500)]
- add documentation that describes, then proceeds to warn about
the many caveats and confusing effects of, the popular approach
of using contains_eager() to alter the natural result of a
related collection. I'm not a fan of this technique as it changes
the semantics of a relationship in such a way that the rest of the
ORM isn't aware of and it also can be undone very easily; hence the
section needs as much text for warnings as for describing the
technique itself. fixes #3563
Mike Bayer [Thu, 19 Nov 2015 20:10:46 +0000 (15:10 -0500)]
- Fixed the ``.python_type`` attribute of :class:`.postgresql.INTERVAL`
to return ``datetime.timedelta`` in the same way as that of
:obj:`.types.Interval.python_type`, rather than raising
``NotImplementedError``.
fixes #3571
Mike Bayer [Thu, 19 Nov 2015 19:23:08 +0000 (14:23 -0500)]
- rewrite the docs and add a test for the bake_queries=True
relationship flag; this flag *does* have an effect when the baked
lazy loader plugin has been invoked. clarify the intent of this
flag as an "opt out" but only has an effect when the baked system
is loaded anyway. fixes #3572
Mike Bayer [Wed, 18 Nov 2015 14:06:33 +0000 (09:06 -0500)]
- Added support for reflecting the source of materialized views
to the Postgresql version of the :meth:`.Inspector.get_view_definition`
method.
fixes #3587
Mike Bayer [Sat, 14 Nov 2015 17:36:09 +0000 (12:36 -0500)]
- extend pullreq github:213 to also include DATETIMEOFFSET and TIME,
which also accept zero precision
- extend test case here to include a backend-agnostic suite
- changelog for MSSQL date fix
Mike Bayer [Wed, 11 Nov 2015 17:57:32 +0000 (12:57 -0500)]
- Fixed bug where the "single table inheritance" criteria would be
added onto the end of a query in some inappropriate situations, such
as when querying from an exists() of a single-inheritance subclass.
Mike Bayer [Thu, 29 Oct 2015 18:25:58 +0000 (14:25 -0400)]
- convert wrap_callable() to a general purpose update_wrapper-like
function; the caller still passes in the "wrapper"
- move tests for wrap_callable() to be generic util tests
- changelog for pullreq github:204
Mike Bayer [Thu, 22 Oct 2015 15:58:25 +0000 (11:58 -0400)]
- update the pool pessimistic invalidation recipe to refer to the
engine_connect event, allowing easy detection of disconnects
and full invalidation of the pool
Mike Bayer [Mon, 19 Oct 2015 18:21:56 +0000 (14:21 -0400)]
- adjust 4f54607923a11669961b53f where we still allow_multirow as long
as versioning isn't needed, fixes test_unitofworkv2->test_update_multi_missing_broken_multi_rowcount
Mike Bayer [Mon, 19 Oct 2015 16:17:37 +0000 (12:17 -0400)]
- Fixed regression in 1.0 where new feature of using "executemany"
for UPDATE statements in the ORM (e.g. :ref:`feature_updatemany`)
would break on Postgresql and other RETURNING backends
when using server-side version generation
schemes, as the server side value is retrieved via RETURNING which
is not supported with executemany.
fixes #3556
Mike Bayer [Fri, 9 Oct 2015 22:01:43 +0000 (18:01 -0400)]
- Added the :paramref:`.AssociationProxy.info` parameter to the
:class:`.AssociationProxy` constructor, to suit the
:attr:`.AssociationProxy.info` accessor that was added in
:ticket:`2971`. This is possible because :class:`.AssociationProxy`
is constructed explicitly, unlike a hybrid which is constructed
implicitly via the decorator syntax.
fixes #3551
Mike Bayer [Wed, 7 Oct 2015 14:02:45 +0000 (10:02 -0400)]
- The system by which a :class:`.Column` considers itself to be an
"auto increment" column has been changed, such that autoincrement
is no longer implicitly enabled for a :class:`.Table` that has a
composite primary key. In order to accommodate being able to enable
autoincrement for a composite PK member column while at the same time
maintaining SQLAlchemy's long standing behavior of enabling
implicit autoincrement for a single integer primary key, a third
state has been added to the :paramref:`.Column.autoincrement` parameter
``"auto"``, which is now the default. fixes #3216
- The MySQL dialect no longer generates an extra "KEY" directive when
generating CREATE TABLE DDL for a table using InnoDB with a
composite primary key with AUTO_INCREMENT on a column that isn't the
first column; to overcome InnoDB's limitation here, the PRIMARY KEY
constraint is now generated with the AUTO_INCREMENT column placed
first in the list of columns.
Mike Bayer [Mon, 5 Oct 2015 13:49:34 +0000 (09:49 -0400)]
- Fixed bug in Oracle dialect where reflection of tables and other
symbols with names quoted to force all-lower-case would not be
identified properly in reflection queries. The :class:`.quoted_name`
construct is now applied to incoming symbol names that detect as
forced into all-lower-case within the "name normalize" process.
fixes #3548
Mike Bayer [Thu, 1 Oct 2015 13:37:53 +0000 (09:37 -0400)]
- remove ambiguous use of the phrase "joined together by AND" as this
may be construed as the Python "and" keyword
- add notes to ORM tutorial for beginners that Python "and" keyword
is not to be used
fixes #3545
Mike Bayer [Mon, 28 Sep 2015 21:35:16 +0000 (17:35 -0400)]
- limit the search for schemas to not include "temp", which is sort of an implicit schema
- repair the CREATE INDEX ddl for schemas
- update provisioning to include support for setting up ATTACH DATABASE up front
for the test_schema; enable "schemas" testing for SQLite
- changelog / migration notes for new SQLite schema support
- include the "schema" as the "remote_schema" when we reflect SQLite FKs
Mike Bayer [Sat, 19 Sep 2015 22:06:23 +0000 (18:06 -0400)]
- The ``legacy_schema_aliasing`` flag, introduced in version 1.0.5
as part of :ticket:`3424` to allow disabling of the MSSQL dialect's
attempts to create aliases for schema-qualified tables, now defaults
to False; the old behavior is now disabled unless explicitly turned on.
fixes #3434
Mike Bayer [Sat, 19 Sep 2015 17:12:08 +0000 (13:12 -0400)]
- Added a new type-level modifier :meth:`.TypeEngine.evaluates_none`
which indicates to the ORM that a positive set of None should be
persisted as the value NULL, instead of omitting the column from
the INSERT statement. This feature is used both as part of the
implementation for :ticket:`3514` as well as a standalone feature
available on any type. fixes #3250
- add new documentation section illustrating the "how to force null"
use case of #3250
- alter our change from #3514 so that the class-level flag is now
called "should_evaluate_none"; so that "evaluates_none" is now
a generative method.
Mike Bayer [Sat, 19 Sep 2015 15:58:50 +0000 (11:58 -0400)]
- The use of a :class:`.postgresql.ARRAY` object that refers
to a :class:`.types.Enum` or :class:`.postgresql.ENUM` subtype
will now emit the expected "CREATE TYPE" and "DROP TYPE" DDL when
the type is used within a "CREATE TABLE" or "DROP TABLE".
fixes #2729
Mike Bayer [Wed, 16 Sep 2015 22:46:53 +0000 (18:46 -0400)]
- The :func:`.type_coerce` construct is now a fully fledged Core
expression element which is late-evaluated at compile time. Previously,
the function was only a conversion function which would handle different
expression inputs by returning either a :class:`.Label` of a column-oriented
expression or a copy of a given :class:`.BindParameter` object,
which in particular prevented the operation from being logically
maintained when an ORM-level expression transformation would convert
a column to a bound parameter (e.g. for lazy loading).
fixes #3531
Mike Bayer [Thu, 10 Sep 2015 14:00:46 +0000 (10:00 -0400)]
- add a new FAQ recipe for "walk all objects", replacing the need
to use mapper.cascade_iterator() for this purpose as it was not really
designed for that use case. Add docs to cascade_iterator() pointing
to the recipe. fixes #3498
Mike Bayer [Tue, 8 Sep 2015 18:12:32 +0000 (14:12 -0400)]
- Internal calls to "bookkeeping" functions within
:meth:`.Session.bulk_save_objects` and related bulk methods have
been scaled back to the extent that this functionality is not
currently used, e.g. checks for column default values to be
fetched after an INSERT or UPDATE statement.
fixes #3526
Mike Bayer [Tue, 8 Sep 2015 17:00:26 +0000 (13:00 -0400)]
- Fixed bug in :meth:`.Session.bulk_save_objects` where a mapped
column that had some kind of "fetch on update" value and was not
locally present in the given object would cause an AttributeError
within the operation.
fixes #3525
Mike Bayer [Fri, 28 Aug 2015 21:43:46 +0000 (17:43 -0400)]
- The :class:`.SessionEvents` suite now includes events to allow
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
Mike Bayer [Mon, 31 Aug 2015 15:30:03 +0000 (11:30 -0400)]
- Fixed regression in 1.0-released default-processor for multi-VALUES
insert statement, :ticket:`3288`, where the column type for the
default-holding column would not be propagated to the compiled
statement in the case where the default was being used,
leading to bind-level type handlers not being invoked.
fixes #3520
Mike Bayer [Fri, 28 Aug 2015 03:38:14 +0000 (23:38 -0400)]
- use consistent and descriptive language in all cases
where we refer to the "weak_identity_map" option, and add additional
exposition in the session documentation which refers to it.
fixes #3517
Mike Bayer [Thu, 27 Aug 2015 22:04:25 +0000 (18:04 -0400)]
- The :class:`.TypeDecorator` type extender will now work in conjunction
with a :class:`.SchemaType` implementation, typically :class:`.Enum`
or :class:`.Boolean` with regards to ensuring that the per-table
events are propagated from the implementation type to the outer type.
These events are used
to ensure that the constraints or Postgresql types (e.g. ENUM)
are correctly created (and possibly dropped) along with the parent
table.
fixes #2919
Mike Bayer [Thu, 27 Aug 2015 19:56:00 +0000 (15:56 -0400)]
- reword and update documentation on passive_updates=False; as virtually
all DBs now support ON UPDATE CASCADE other than Oracle, there's no need
to try to reimplement more functionality here and users should be encouraged
to forego natural PKs unless their target platform supports them.
references #2666