[jboss-dev-forums] [JBoss Transactions Development] - EnityManager.close() before or after JTA afterCompletion()?

[seyvet]

seyvet [https://community.jboss.org/people/seyvet] created the discussion

"EnityManager.close() before or after JTA afterCompletion()?"

To view the discussion, visit: https://community.jboss.org/message/794692#794692

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Hi,
 
See as a reference the https://community.jboss.org/message/794633#794633 thread.


In an application server, that is JavaEE 6 compliant, which of EntityManager.close() and JTA Synchronization.afterCompletion() should be closed first?
 
Based on the persistence specification:
 
7.9.1 Container Responsibilities:
After the JTA transaction has completed (either by transaction commit or rollback), The container closes the entity manager by calling EntityManager.close.

 
I am using DataNucleus (DN) 3.2 as a Persistence provider, and DN expects the Transaction afterCompletion() to be triggered BEFORE the EntityManager.close().  It seems that the opposite is triggered by JBoss.  So I wonder if both are correct or if one should be called before another based on either JTA or Persistence JSRs?
 
Based on the thread dump, arjuna calls first: 
at org.datanucleus.api.jpa.JPAEntityManager.close(JPAEntityManager.java:194)
at org.jboss.as.jpa.transaction.TransactionUtil$SessionSynchronization.afterCompletion(TransactionUtil.java:193)

 
(EntityManager.close() is called first)
 
Then JTA after completion:
at org.datanucleus.TransactionImpl.internalPostCommit(TransactionImpl.java:563)
            at org.datanucleus.JTATransactionImpl.afterCompletion(JTATransactionImpl.java:429)
            at com.arjuna.ats.internal.jta.resources.arjunacore.SynchronizationImple.afterCompletion(SynchronizationImple.java:96)


Thanks
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