Need explanation about Transactions on JavaBean

agori Apr 11, 2008 12:08 PM

I am developing an application for plain Tomcat6.
So no statefull or stateless session bean (my beans are only annotated by @Name).
I am using JPA with Hibernate.

Well, what is happening in my action methods about transactions?
Do I need to annotated every controller class with @Transactional or not?

Currenctly (without any @Transaction) if my save method performs 2 update, will they happens in 2 different transactions?

If I add @Transactional, what happen if my method throws an Exception? Is it rollbacked?

Thanks a lot.

1. Re: Need explanation about Transactions on JavaBean

tom_goring Apr 12, 2008 4:31 AM (in response to agori)
For sure if your exception is:

@ApplicationException(rollback=true) public class BLRuleFailure extends RuntimeException
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2. Re: Need explanation about Transactions on JavaBean

pmuir Apr 14, 2008 10:11 AM (in response to agori)

Alberto Gori wrote on Apr 11, 2008 12:08 PM:

Currenctly (without any @Transaction) if my save method performs 2 update, will they happens in 2 different transactions?

Depends if you are using Seam managed transactions, if you are, then they will happen in the same transaction. You need to annotate any method which may require a transaction @Transactional to ensure that Seam starts a transaction if necessary for it.
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3. Re: Need explanation about Transactions on JavaBean

vladimir.kovalyuk Aug 28, 2008 4:54 PM (in response to agori)

Please correct me if I wrong:
When application uses seam-managed transactions and persistence context and most JSF actions are binded to Java Beans, I need to mark each binded method with @Transactional if the method is supposed to be atomic.
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