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modification for chapter 6's persistenceContextCollision

 
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I modified this example:



Our expected result is collision:


javax.ejb.EJBException: There is an active transactional persistence context for the same EntityManagerFactory as the current stateful session bean's extended persistence context

 
Himai Minh
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To make it work, let the stateful bean starts a new transaction instead of using the propagated transaction:


Reference:http://shengwangi.blogspot.com/2015/11/understand-persistence-context-collision.html
 
Himai Minh
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The reason why I suggested this modification because  the original code demonstrated another concept , not pc collision.
The original code tells us that an stateful bean  with container managed transaction  cannot run in a UserTransaction.
The output error message is actually:

javax.ejb.EJBException: java.lang.IllegalStateException: Bean is associated with a different unfinished transaction



Original code as Audit bean is stateless with transaction scoped PC and Department manager bean as stateful with extended PC.






 
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