========
- features
- orm
- - Added two new hooks to SessionExtension: after_bulk_delete and
- after_bulk_update. after_bulk_delete is called after a bulk delete()
- operation on a query. after_bulk_update is called after a bulk update()
- operation on a query.
+ - Added two new hooks to SessionExtension:
+ after_bulk_delete() and after_bulk_update().
+ after_bulk_delete() is called after a bulk delete()
+ operation on a query. after_bulk_update() is called
+ after a bulk update() operation on a query.
- sql
- - SQL compiler optimizations. The call count for compiling a
- typical select() construct is 20% less versus 0.5.0rc2.
-
- - Dialects can now generate label names of adjustable length.
- Pass in the argument "label_length=<value>" to create_engine()
- to adjust how many characters max will be present in dynamically
- generated column labels, i.e. "somecolumn AS somelabel". Any
- value less than 6 will result in a label of minimal size,
- consiting of an underscore and a numeric counter.
- The compiler uses the value of dialect.max_identifier_length
- as a default. [ticket:1211]
+ - SQL compiler optimizations and complexity
+ reduction. The call count for compiling a
+ typical select() construct is 20% less versus
+ 0.5.0rc2.
+
+ - Dialects can now generate label names of adjustable
+ length. Pass in the argument "label_length=<value>" to
+ create_engine() to adjust how many characters max will
+ be present in dynamically generated column labels, i.e.
+ "somecolumn AS somelabel". Any value less than 6 will
+ result in a label of minimal size, consiting of an
+ underscore and a numeric counter. The compiler uses the
+ value of dialect.max_identifier_length as a default.
+ [ticket:1211]
- ext
- - Added a new extension sqlalchemy.ext.serializer. Provides
- Serializer/Deserializer "classes" which mirror Pickle/Unpickle,
- as well as dumps() and loads(). This serializer implements
- an "external object" pickler which keeps key context-sensitive
- objects, including engines, sessions, metadata, Tables/Columns,
- and mappers, outside of the pickle stream, and can later
- restore the pickle using any engine/metadata/session provider.
- This is used not for pickling regular object instances, which are
- pickleable without any special logic, but for pickling expression
- objects and full Query objects, such that all mapper/engine/session
+ - Added a new extension sqlalchemy.ext.serializer.
+ Provides Serializer/Deserializer "classes" which mirror
+ Pickle/Unpickle, as well as dumps() and loads(). This
+ serializer implements an "external object" pickler
+ which keeps key context-sensitive objects, including
+ engines, sessions, metadata, Tables/Columns, and
+ mappers, outside of the pickle stream, and can later
+ restore the pickle using any engine/metadata/session
+ provider. This is used not for pickling regular object
+ instances, which are pickleable without any special
+ logic, but for pickling expression objects and full
+ Query objects, such that all mapper/engine/session
dependencies can be restored at unpickle time.
- oracle
- - Wrote a docstring for Oracle dialect. Apparently that Ohloh
- "few source code comments" label is starting to sting :).
+ - Wrote a docstring for Oracle dialect. Apparently
+ that Ohloh "few source code comments" label is
+ starting to sting :).
- - Removed FIRST_ROWS() optimize flag when using LIMIT/OFFSET,
- can be reenabled with optimize_limits=True create_engine()
- flag. [ticket:536]
+ - Removed FIRST_ROWS() optimize flag when using
+ LIMIT/OFFSET, can be reenabled with
+ optimize_limits=True create_engine() flag.
+ [ticket:536]
- bugfixes and behavioral changes
- orm
- - "not equals" comparisons of simple many-to-one relation to an
- instance will not drop into an EXISTS clause and will compare
- foreign key columns instead.
-
- - Removed not-really-working use cases of comparing a collection
- to an iterable. Use contains() to test for collection
- membership.
-
- - Improved the behavior of aliased() objects such that they more
- accurately adapt the expressions generated, which helps
- particularly with self-referential comparisons. [ticket:1171]
+ - "not equals" comparisons of simple many-to-one
+ relation to an instance will not drop into an
+ EXISTS clause and will compare foreign key
+ columns instead.
+
+ - Removed not-really-working use cases of
+ comparing a collection to an iterable. Use
+ contains() to test for collection membership.
+
+ - Improved the behavior of aliased() objects such
+ that they more accurately adapt the expressions
+ generated, which helps particularly with
+ self-referential comparisons. [ticket:1171]
- - Fixed bug involving primaryjoin/secondaryjoin conditions
- constructed from class-bound attributes (as often occurs
- when using declarative), which later would be inappropriately
- aliased by Query, particularly with the various EXISTS
- based comparators.
+ - Fixed bug involving primaryjoin/secondaryjoin
+ conditions constructed from class-bound
+ attributes (as often occurs when using
+ declarative), which later would be
+ inappropriately aliased by Query, particularly
+ with the various EXISTS based comparators.
- - Fixed bug when using multiple query.join() with an aliased-bound
- descriptor which would lose the left alias.
+ - Fixed bug when using multiple query.join() with
+ an aliased-bound descriptor which would lose the
+ left alias.
- - Improved weakref identity map memory management to no longer
- require mutexing, resurrects garbage collected instance on a
- lazy basis for an InstanceState with pending changes.
-
- - relation() won't hide unrelated ForeignKey errors inside of
- the "please specify primaryjoin" message when determining join
+ - Improved weakref identity map memory management
+ to no longer require mutexing, resurrects
+ garbage collected instance on a lazy basis for
+ an InstanceState with pending changes.
+
+ - InstanceState object now removes circular
+ references to itself upon disposal to keep it
+ outside of cyclic garbage collection.
+
+ - relation() won't hide unrelated ForeignKey
+ errors inside of the "please specify
+ primaryjoin" message when determining join
condition.
- - Fixed bug in Query involving order_by() in conjunction with
- multiple aliases of the same class (will add tests in
- [ticket:1218])
+ - Fixed bug in Query involving order_by() in
+ conjunction with multiple aliases of the same
+ class (will add tests in [ticket:1218])
- - When using Query.join() with an explicit clause for the ON
- clause, the clause will be aliased in terms of the left side
- of the join, allowing scenarios like query(Source).
- from_self().join((Dest, Source.id==Dest.source_id)) to work
- properly.
-
- - polymorphic_union() function respects the "key" of each Column
- if they differ from the column's name.
-
- - Repaired support for "passive-deletes" on a many-to-one
- relation() with "delete" cascade. [ticket:1183]
-
- - Fixed bug in composite types which prevented a primary-key
- composite type from being mutated [ticket:1213].
+ - When using Query.join() with an explicit clause
+ for the ON clause, the clause will be aliased in
+ terms of the left side of the join, allowing
+ scenarios like query(Source).
+ from_self().join((Dest,
+ Source.id==Dest.source_id)) to work properly.
+
+ - polymorphic_union() function respects the "key"
+ of each Column if they differ from the column's
+ name.
+
+ - Repaired support for "passive-deletes" on a
+ many-to-one relation() with "delete" cascade.
+ [ticket:1183]
+
+ - Fixed bug in composite types which prevented a
+ primary-key composite type from being mutated
+ [ticket:1213].
- - Added more granularity to internal attribute access, such that
- cascade and flush operations will not initialize unloaded
- attributes and collections, leaving them intact for a
- lazy-load later on. Backref events still initialize attrbutes
- and collections for pending instances. [ticket:1202]
-
- - InstanceState object now removes circular references to itself
- upon disposal to keep it outside of cyclic garbage collection.
+ - Added more granularity to internal attribute
+ access, such that cascade and flush operations
+ will not initialize unloaded attributes and
+ collections, leaving them intact for a lazy-load
+ later on. Backref events still initialize
+ attrbutes and collections for pending instances.
+ [ticket:1202]
- sql
- - Simplified the check for ResultProxy "autoclose without results"
- to be based solely on presence of cursor.description.
- All the regexp-based guessing about statements returning rows
- has been removed [ticket:1212].
+ - Simplified the check for ResultProxy "autoclose
+ without results" to be based solely on presence
+ of cursor.description. All the regexp-based
+ guessing about statements returning rows has
+ been removed [ticket:1212].
- - Further simplified SELECT compilation and its relationship to
- result row processing.
-
- - Direct execution of a union() construct will properly set up
- result-row processing. [ticket:1194]
-
- - The internal notion of an "OID" or "ROWID" column has been
- removed. It's basically not used by any dialect, and the
- possibility of its usage with psycopg2's cursor.lastrowid is
- basically gone now that INSERT..RETURNING is available.
-
- - Removed "default_order_by()" method on all FromClause objects.
-
- - Repaired the table.tometadata() method so that a passed-in
- schema argument is propigated to ForeignKey constructs.
+ - Direct execution of a union() construct will
+ properly set up result-row processing.
+ [ticket:1194]
+
+ - The internal notion of an "OID" or "ROWID"
+ column has been removed. It's basically not used
+ by any dialect, and the possibility of its usage
+ with psycopg2's cursor.lastrowid is basically
+ gone now that INSERT..RETURNING is available.
+
+ - Removed "default_order_by()" method on all
+ FromClause objects.
+
+ - Repaired the table.tometadata() method so that a
+ passed-in schema argument is propigated to
+ ForeignKey constructs.
- - Slightly changed behavior of IN operator for comparing to
- empty collections. Now results in inequality comparison
- against self. More portable, but breaks with stored procedures
- that aren't pure functions.
+ - Slightly changed behavior of IN operator for
+ comparing to empty collections. Now results in
+ inequality comparison against self. More
+ portable, but breaks with stored procedures that
+ aren't pure functions.
- oracle
- - Setting the auto_convert_lobs to False on create_engine() will
- also instruct the OracleBinary type to return the cx_oracle
- LOB object unchanged.
+ - Setting the auto_convert_lobs to False on
+ create_engine() will also instruct the
+ OracleBinary type to return the cx_oracle LOB
+ object unchanged.
- mysql
- - Fixed foreign key reflection in the edge case where a Table's
- explicit schema= is the same as the schema (database) the
- connection is attached to.
+ - Fixed foreign key reflection in the edge case
+ where a Table's explicit schema= is the same as
+ the schema (database) the connection is attached
+ to.
- - No longer expects include_columns in table reflection to be
- lower case.
+ - No longer expects include_columns in table
+ reflection to be lower case.
- ext
- - Fixed bug preventing declarative-bound "column" objects
- from being used in column_mapped_collection(). [ticket:1174]
+ - Fixed bug preventing declarative-bound "column"
+ objects from being used in
+ column_mapped_collection(). [ticket:1174]
- misc
- - util.flatten_iterator() func doesn't interpret strings with
- __iter__() methods as iterators, such as in pypy [ticket:1077].
+ - util.flatten_iterator() func doesn't interpret
+ strings with __iter__() methods as iterators,
+ such as in pypy [ticket:1077].
0.5.0rc2
========
projects / thirdparty / sqlalchemy / sqlalchemy.git / commitdiff
