I've had a request to add savepoint release support to zope.sqlalchemy as some databases seem to limit the number of savepoints in a transaction.
I've added this in a branch of transaction here: svn+ssh://svn.zope.org/repos/main/transaction/branches/elro-savepoint-release >From the changelog: * Add support for savepoint.release(). Some databases only support a limited number of savepoints or subtransactions, this provides an opportunity for a data manager to free those resources. * Rename InvalidSavepointRollbackError to InvalidSavepointError (BBB provided.) If there are no objections, I shall merge this to trunk. I noticed that test_SampleResourceManager defined a discard():pass method. I've removed it in the branch as it seems confusing - it seems to be used in relation to both savepoint release and rollback. It also shows up here: http://docs.zope.org/zope3/Book/zodb/collaboration/show.html, but not in the collaborations.txt from current ZODB trunk. I'm still not sure this will allow me to add savepoint release support to zope.sqlalchemy, as SQLAlchemy has a concept of nested transactions rather than savepoints. http://groups.google.com/group/sqlalchemy/browse_thread/thread/7a4632587fd97724 Laurence _______________________________________________ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org https://mail.zope.org/mailman/listinfo/zodb-dev
