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From Dain Sundstrom <>
Subject EntityManager usage pattern
Date Sun, 10 Dec 2006 01:44:23 GMT
Based on the feed back I got on the "Flush all caches" thread, I  
wanted to clarify the preferred usage pattern for EntityManager.  Abe  
White said, "You must use a new EntityManager for each test" and I'm  
not sure if that was advice for my specific use case, or if in  
general, I should create a new entity manager instance for each  
transaction and close it when the transaction terminates.  Basically,  
something like this:

public void doWork() {
   try {
     em = emf.createEntityManager()
   } finally {


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