Why does Session.close() not do a flush? I assume this must mean there must be some situation where you'd want to close without flushing, but I can't imagine what that might be...

thanks,
mark

commit executes a flush because you explicitly "want" the changes to be persisted .
But session.close just mean you discard the current session.
If you trap an exception, then you may want to stop and forgive all the changes you've done, so you'll call rollback + close to release connexion