Alright, I just saw that JPA spec says in "220.127.116.11 The
If the EntityTransaction.commit operation fails, the
persistence provider must roll back the transaction.
So I take back my proposal in order to align with JPA.
Jörg von Frantzius schrieb:
after looking at the spec, and 13.4.4 "Non-managed environment" in
particular, I'm somewhat puzzled about what the expected behaviour of
javax.jdo.Transaction.commit() should be upon encountering an exception
during flush. What JPOX currently does is an automatic rollback of the
DB connection and of the PM's caches, calling
sync.afterCompletion(Status.STATUS_ROLLEDBACK) and setting the state of
the transaction to not-active. I wonder whether that's really intended.
While there isn't much a user can do about an optimistic failure during
flush, there could be any SQLException happening during flush that the
user might want to catch and try to recover from, I imagine. He won't
be able to do so if the transaction is automatically rolled-back.
So my proposal would be that upon failure during flush, nothing should
be done by the implementation but throwing the appropriate exception.