0.2.9
-- logging is now implemented via standard python "logging" module.
-"echo" keyword parameters are still functional but set/unset
-log levels for their respective classes/instances. all logging
-can be controlled directly through the Python API by setting
-INFO and DEBUG levels for loggers in the "sqlalchemy" namespace.
-class-level logging is under "sqlalchemy.<module>.<classname>",
-instance-level logging under "sqlalchemy.<module>.<classname>.<hexid>".
-Test suite includes "--log-info" and "--log-debug" arguments
-which work independently of --verbose/--quiet. Logging added
-to orm to allow tracking of mapper configurations, row iteration.
-- internal refactoring to mapper instances() method to use a
-SelectionContext object to track state during the operation.
-SLIGHT API BREAKAGE: the append_result() and populate_instances()
-methods on MapperExtension have a slightly different method signature
-now as a result of the change; hoping that these methods are not
-in widespread use as of yet.
-- updates to MS-SQL driver:
- -- fixes bug 261 (table reflection broken for MS-SQL case-sensitive
- databases)
- -- can now specify port for pymssql
- -- introduces new "auto_identity_insert" option for auto-switching
- between "SET IDENTITY_INSERT" mode when values specified for IDENTITY columns
- -- now supports multi-column foreign keys
- -- fix to reflecting date/datetime columns
- -- NCHAR and NVARCHAR type support added
-- more rearrangements of unit-of-work commit scheme to better allow
-dependencies within circular flushes to work properly...updated
-task traversal/logging implementation
-- added an automatic "row switch" feature to mapping, which will
-detect a pending instance/deleted instance pair with the same
-identity key and convert the INSERT/DELETE to a single UPDATE
-- "association" mappings simplified to take advantage of
-automatic "row switch" feature
-- changed "for_update" parameter to accept False/True/"nowait"
-and "read", the latter two of which are interpreted only by
-Oracle and Mysql [ticket:292]
-- added "viewonly" flag to relation(), allows construction of
-relations that have no effect on the flush() process.
-- added "lockmode" argument to base Query select/get functions,
-including "with_lockmode" function to get a Query copy that has
-a default locking mode. Will translate "read"/"update"
-arguments into a for_update argument on the select side.
-[ticket:292]
-- implemented "version check" logic in Query/Mapper, used
-when version_id_col is in effect and query.with_lockmode()
-is used to get() an instance thats already loaded
-- fixed bug where Connection wouldnt lose its Transaction
-after commit/rollback
-- added extract() function to sql dialect
-- added an implicit close() on the cursor in ResultProxy
-when the result closes
-- added scalar() method to ComposedSQLEngine, ResultProxy
-- post_update behavior improved; does a better job at not
-updating too many rows, updates only required columns
-[ticket:208]
-- BooleanExpression includes new "negate" argument to specify
-the appropriate negation operator if one is available.
-- calling a negation on an "IN" or "IS" clause will result in
-"NOT IN", "IS NOT" (as opposed to NOT (x IN y)).
-- adjustments to eager loading so that its "eager chain" is
-kept separate from the normal mapper setup, thereby
-preventing conflicts with lazy loader operation, fixes
-[ticket:308]
-- fix to deferred group loading
-- added "batch=True" flag to mapper; if False, save_obj
-will fully save one object at a time including calls
-to before_XXXX and after_XXXX
-- added autoincrement=True to Column; will disable schema generation
-of SERIAL/AUTO_INCREMENT/identity seq for postgres/mysql/mssql if
-explicitly set to False
-- connection pool tracks open cursors and raises an error if connection
-is returned to pool with cursors still opened. fixes issues with MySQL,
-others
-- attribute tracking modified to be more intelligent about detecting
-changes, particularly with mutable types. TypeEngine objects now
-take a greater role in defining how to compare two scalar instances,
-including the addition of a MutableType mixin which is implemented by
-PickleType. unit-of-work now tracks the "dirty" list as an expression
-of all persistent objects where the attribute manager detects changes.
-The basic issue thats fixed is detecting changes on PickleType
-objects, but also generalizes type handling and "modified" object
-checking to be more complete and extensible.
-- specifying joins in the from_obj argument of query.select() will
-replace the main table of the query, if the table is somewhere within
-the given from_obj. this makes it possible to produce custom joins and
-outerjoins in queries without the main table getting added twice.
-[ticket:315]
-- eagerloading is adjusted to look in more complicated from clauses
-when attaching to the query.
-- added join_to and outerjoin_to transformative methods to SelectResults,
-to build up join/outerjoin conditions based on property names. also
-added select_from to explicitly set from_obj parameter.
-- sqlite boolean datatype converts False/True to 0/1 by default
+- General:
+ - logging is now implemented via standard python "logging" module.
+ "echo" keyword parameters are still functional but set/unset
+ log levels for their respective classes/instances. all logging
+ can be controlled directly through the Python API by setting
+ INFO and DEBUG levels for loggers in the "sqlalchemy" namespace.
+ class-level logging is under "sqlalchemy.<module>.<classname>",
+ instance-level logging under "sqlalchemy.<module>.<classname>.<hexid>".
+ Test suite includes "--log-info" and "--log-debug" arguments
+ which work independently of --verbose/--quiet. Logging added
+ to orm to allow tracking of mapper configurations, row iteration.
+- Specific Databases:
+ - SQLite:
+ - sqlite boolean datatype converts False/True to 0/1 by default
+ - MS-SQL:
+ - fixes bug 261 (table reflection broken for MS-SQL case-sensitive
+ databases)
+ - can now specify port for pymssql
+ - introduces new "auto_identity_insert" option for auto-switching
+ between "SET IDENTITY_INSERT" mode when values specified for IDENTITY columns
+ - now supports multi-column foreign keys
+ - fix to reflecting date/datetime columns
+ - NCHAR and NVARCHAR type support added
+- Schema:
+ - added autoincrement=True to Column; will disable schema generation
+ of SERIAL/AUTO_INCREMENT/identity seq for postgres/mysql/mssql if
+ explicitly set to False
+ - TypeEngine objects now have methods to deal with copying and comparing
+ values of their specific type. Currently used by the ORM, see below.
+- Connections/Pooling/Execution:
+ - connection pool tracks open cursors and automatically closes them
+ if connection is returned to pool with cursors still opened. Can be
+ affected by options which cause it to raise an error instead, or to
+ do nothing. fixes issues with MySQL, others
+ - fixed bug where Connection wouldnt lose its Transaction
+ after commit/rollback
+ - added scalar() method to ComposedSQLEngine, ResultProxy
+ - ResultProxy will close() the underlying cursor when the ResultProxy
+ itself is closed. this will auto-close cursors for ResultProxy objects
+ that have had all their rows fetched (or had scalar() called).
+- SQL Construction:
+ - changed "for_update" parameter to accept False/True/"nowait"
+ and "read", the latter two of which are interpreted only by
+ Oracle and Mysql [ticket:292]
+ - added extract() function to sql dialect
+ (SELECT extract(field FROM expr))
+ - BooleanExpression includes new "negate" argument to specify
+ the appropriate negation operator if one is available.
+ - calling a negation on an "IN" or "IS" clause will result in
+ "NOT IN", "IS NOT" (as opposed to NOT (x IN y)).
+- ORM:
+ - attribute tracking modified to be more intelligent about detecting
+ changes, particularly with mutable types. TypeEngine objects now
+ take a greater role in defining how to compare two scalar instances,
+ including the addition of a MutableType mixin which is implemented by
+ PickleType. unit-of-work now tracks the "dirty" list as an expression
+ of all persistent objects where the attribute manager detects changes.
+ The basic issue thats fixed is detecting changes on PickleType
+ objects, but also generalizes type handling and "modified" object
+ checking to be more complete and extensible.
+ - internal refactoring to mapper instances() method to use a
+ SelectionContext object to track state during the operation.
+ SLIGHT API BREAKAGE: the append_result() and populate_instances()
+ methods on MapperExtension have a slightly different method signature
+ now as a result of the change; hoping that these methods are not
+ in widespread use as of yet.
+ - more rearrangements of unit-of-work commit scheme to better allow
+ dependencies within circular flushes to work properly...updated
+ task traversal/logging implementation
+ - added an automatic "row switch" feature to mapping, which will
+ detect a pending instance/deleted instance pair with the same
+ identity key and convert the INSERT/DELETE to a single UPDATE
+ - "association" mappings simplified to take advantage of
+ automatic "row switch" feature
+ - added "viewonly" flag to relation(), allows construction of
+ relations that have no effect on the flush() process.
+ - added "lockmode" argument to base Query select/get functions,
+ including "with_lockmode" function to get a Query copy that has
+ a default locking mode. Will translate "read"/"update"
+ arguments into a for_update argument on the select side.
+ [ticket:292]
+ - implemented "version check" logic in Query/Mapper, used
+ when version_id_col is in effect and query.with_lockmode()
+ is used to get() an instance thats already loaded
+ - post_update behavior improved; does a better job at not
+ updating too many rows, updates only required columns
+ [ticket:208]
+ - adjustments to eager loading so that its "eager chain" is
+ kept separate from the normal mapper setup, thereby
+ preventing conflicts with lazy loader operation, fixes
+ [ticket:308]
+ - fix to deferred group loading
+ - added "batch=True" flag to mapper; if False, save_obj
+ will fully save one object at a time including calls
+ to before_XXXX and after_XXXX
+ - specifying joins in the from_obj argument of query.select() will
+ replace the main table of the query, if the table is somewhere within
+ the given from_obj. this makes it possible to produce custom joins and
+ outerjoins in queries without the main table getting added twice.
+ [ticket:315]
+ - eagerloading is adjusted to more thoughtfully attach its LEFT OUTER JOINs
+ to the given query, looking for custom "FROM" clauses that may have
+ already been set up.
+ - added join_to and outerjoin_to transformative methods to SelectResults,
+ to build up join/outerjoin conditions based on property names. also
+ added select_from to explicitly set from_obj parameter.
0.2.8
- cleanup on connection methods + documentation. custom DBAPI
projects / thirdparty / sqlalchemy / sqlalchemy.git / commitdiff
