Christian Heimes wrote:
Tim Peters wrote:
...
Nesting savepoints works according to your test and I really believe you that they work in real live. Honestly! :) But there is some evil code in transaction/ that is destroying savepoints for my use case. Committing a subtransaction using the old and deprecated transaction.commit(1) syntax is invalidating all savepoints. The invalidation would be harmless but the zcatalog has a nasty feature. It is committing a subtransaction + GC cleanup after cataloging n object in a transaction. IIRC n=10,000 by default which might be reached much earlier than one can imagine.
subtransactions != savepoints There is *no* promise of nestability with subtransactions. Committing a subtransaction invalidates prior savepoints by design. This is necessary to maintain backward compatibility. If you don't like this behavior, don't use subtransactions. A good community project would be to convert all of the subtransaction calls in Zope to savepoint calls. Jim -- Jim Fulton mailto:[EMAIL PROTECTED] Python Powered! CTO (540) 361-1714 http://www.python.org Zope Corporation http://www.zope.com http://www.zope.org _______________________________________________ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
