Changes
=======

0.6.1 (2011-01-08)
------------------

* Update datamanager.mark_changed to handle sessions which have not yet logged
  a (ORM) query.


0.6 (2010-07-24)
----------------

* Implement should_retry for sqlalchemy.orm.exc.ConcurrentModificationError
  and serialization errors from PostgreSQL and Oracle.
  (Specify transaction>=1.1 to use this functionality.)

* Include license files.

* Add ``transaction_manager`` attribute to data managers for compliance with
  IDataManager interface.

0.5 (2010-06-07)
----------------

* Remove redundant session.flush() / session.clear() on savepoint operations.
  These were only needed with SQLAlchemy 0.4.x. 

* SQLAlchemy 0.6.x support. Require SQLAlchemy >= 0.5.1.

* Add support for running ``python setup.py test``.

* Pull in pysqlite explicitly as a test dependency.

* Setup sqlalchemy mappers in test setup and clear them in tear down. This
  makes the tests more robust and clears up the global state after. It
  caused the tests to fail when other tests in the same run called
  clear_mappers.

0.4 (2009-01-20)
----------------

Bugs fixed:

* Only raise errors in tpc_abort if we have committed.

* Remove the session id from the SESSION_STATE just before we de-reference the
  session (i.e. all work is already successfuly completed). This fixes cases
  where the transaction commit failed but SESSION_STATE was already cleared.  In
  those cases, the transaction was wedeged as abort would always error.  This
  happened on PostgreSQL where invalid SQL was used and the error caught.

* Call session.flush() unconditionally in tpc_begin.

* Change error message on session.commit() to be friendlier to non zope users.

Feature changes:

* Support for bulk update and delete with SQLAlchemy 0.5.1

0.3 (2008-07-29)
----------------

Bugs fixed:

* New objects added to a session did not cause a transaction join, so were not
  committed at the end of the transaction unless the database was accessed.
  SQLAlchemy 0.4.7 or 0.5beta3 now required.

Feature changes:

* For correctness and consistency with ZODB, renamed the function 'invalidate' 
  to 'mark_changed' and the status 'invalidated' to 'changed'.

0.2 (2008-06-28)
----------------

Feature changes:

* Updated to support SQLAlchemy 0.5. (0.4.6 is still supported).

0.1 (2008-05-15)
----------------

* Initial public release.
