Using EntityManager unwrap method in a bean managed transaction

Question

I am using the Hibernate Session obtained from em.unwrap(..) method. I couldn't seem to find any info on whether I have to release it after usage. The transaction is managed by the bean and the entity manager is injected using @Inject.

    boolean transactionSuccess = false;
    try {
        utx.begin();
        final Session session = em.unwrap(Session.class);
        transactionSuccess = true;
    } finally {
        commitOrRollback(transactionSuccess);
    }

I presume that the entity manager instance is managed by the container. Since the Session is more or less the underlying implementation do I have to release it? It is AutoCloseable after all.

the only relevant info i found was this (but it seems vanilla JPA): After using the unwrap method on entitymanager to get the native hibernate session do I have to close both?

You point to your own question for reference ...? – thst Aug 26 '17 at 05:57 — thst, Aug 26 '17 at 05:57
Sorry, mistake on my part. Fixed. – jl. Aug 28 '17 at 07:08 — jl., Aug 28 '17 at 07:08

score 0 · Accepted Answer · answered Aug 26 '17 at 05:37

0

No, you requested an underlying object, the responsibility to close that object lies with the EntityManager.

Session to be AutoCloseable is reasonable when you work with unwrapped Hibernate.

answered Aug 26 '17 at 05:37

aschoerk

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Using EntityManager unwrap method in a bean managed transaction

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