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Doubt on EJBExceptiion and EJB Transaction Rolledback Exception

Chaminda Amarasinghe
Ranch Hand

Joined: May 17, 2006
Posts: 402
Hi Folks,

Can someone please explain why Container throws 2 different (EJBExceptiion and EJBTransactionRolledbackException) exceptions in case of System exception in bean(CMT) method upon the transaction context of caller?

ie, why container throws EJBExceptiion if TM creates a new transaction for bean, while throws an EJBTransactionRolledbackException if TM does not create new transaction for bean.

My question is yhy container throws 2 instead of 1 EJBTransactionRolledbackException or EJBExceptiion?

(Refer sec 14.3.1 of ejb spec)

Thanks
Cham

[ October 25, 2008: Message edited by: Chaminda Amarasinghe ]
[ October 25, 2008: Message edited by: Chaminda Amarasinghe ]
Chaminda Amarasinghe
Ranch Hand

Joined: May 17, 2006
Posts: 402
Hi Folks,

After a bit deeper thinking about the concept behind this I could come up with answer for my own question. Please correct me if Im wrong

If callee shares callers transaction it is important to inform the caller that callee shared caller's transaction but cause by an exception, so sets the transactionRalledBack and throws EJBTransactionRolledbackException and on other hand it does not make sense seting transactionRalledBack or throwing EJBTransactionRolledbackException if callee does not share caller's transaction instead of throwing an EJBException.

Thanks
Cham
Christophe Verré
Sheriff

Joined: Nov 24, 2005
Posts: 14688
    
  16

EJBTransactionRolledbackException is thrown to inform the caller that his transaction has been rolled back. If the callee has a transaction of his own, the caller doesn't care about that, so an EJBException is thrown instead.


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Chaminda Amarasinghe
Ranch Hand

Joined: May 17, 2006
Posts: 402
Thanks Christophe Verre
 
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