[OPENJPA-116] EntityManager.getDelegate should throw an IllegalStateException - ASF JIRA

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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"); }