Callback Transaction Commit-CMP

[tarunbansal84]

Hi 

I am using container managed persistence through JPA in my seam applications.

I want to perform some operation whenever the transaction commits. I have configured EntityManager in conversation context like this-

<persistence:managed-persistence-context auto-create="true"
  name="entityManager"  scope="CONVERSATION" persistence-unit-jndi-name="java:/TalentPactEntityManagerFactory"  />

Please suggest me how can I configure some callback at transaction commit event.

Thanks
Tarun

[stefanotravelli]

I would try registering a component implementing javax.transaction.Synchronization with org.jboss.seam.transaction.Transaction.instance().registerSynchronization()

You have to figure out the life cycle of this component. Maybe an event scoped component that register itself at @Create time.

You also need <transaction:ejb-transaction/> in components.xml for the callback method to be invoked.

[agori]

You could observe the org.jboss.seam.afterTransactionSuccess Seam event.
Take a look at Seam documentatin about its event system:

http://docs.jboss.org/seam/latest/reference/en-US/html/events.html

[stefanotravelli]

Good point.

However, note that such event get raised only by the Seam Application Framework, that is the EntityHome or HibernateEntityHome classes.

[tarunbansal84]

Hi Guys

Thanks for the response. This solution worked for me.

I just added action for seam event in component.xml.