You should use the CONVERSATION scope and use flushMode = FlushModeType.MANUAL in the
@Begin annotation, then you can explicitly call entityManager.flush() if you want yo save
the data, otherwise you can do anything with the data you want to edit while you
conversation is active.
Regarding your second question, I don't understand what you want to do. Maybe if you
explain a bit else, I can help you.
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