[jira] Created: (OPENJPA-116) EntityManager.getDelegate should throw an IllegalStateException

[Michael Dick (JIRA)]

EntityManager.getDelegate should throw an IllegalStateException 
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                 Key: OPENJPA-116
                 URL: https://issues.apache.org/jira/browse/OPENJPA-116
             Project: OpenJPA
          Issue Type: Bug
            Reporter: Michael Dick
            Priority: Minor


EntityManager.getDelegate() should throw an IllegalStateException if the 
EntityManager has been closed. 

I noticed then when debugging other problems. According to the javadoc 
http://java.sun.com/javaee/5/docs/api/javax/persistence/EntityManager.html#getDelegate()
 we need to throw an exception if the EM has been closed. 

In case I missed anything here's what I did to reproduce the problem. 


        EntityManagerFactory _emf = 
Persistence.createEntityManagerFactory("test");

        EntityManager em = _emf.createEntityManager();

        em.close();

        try {
            Object o = em.getDelegate();
            fail();
        }
        catch(IllegalStateException ise) {
            System.out.println("Caught expected exception");
        }



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