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From Markus Fuchs <Markus.Fu...@Sun.COM>
Subject Two questions about OpenJPA impl.
Date Thu, 07 Jun 2007 23:52:34 GMT
Hi all,

could somebody please answer these questions?

1) Does OpenJPA create before images for rollback? Or is the transaction 
rollback functionality just implemented in the JDO closed source? As 
Reece mentions, we'd need before image values on relationships for 
dependency calculation in case of unique keys.

2) Why are updates ignored (not re-ordered) in ConstraintUpdateManager, 
if there are *no* delete-then-insert-same-pk?

3) Can foreign keys be used in the WHERE clause for updates/deletes?

Thanks so much!

-- markus.

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