BTW: the reason why I want to customize this behavior is described here:

http://management-platform.blogspot.com/2008/11/transaction-timeouts-and-ejb3jpa.html

In short, I don't want my SLSB method to continue when the transaction timeout expires - I want the thread running that method to be interrupted so the SLSB method stops wasting time continuing processing the request when the transaction is just getting rolled back anyway.

I'm thinking I might be able to inject an interceptor in my EJB3 interceptor chain - write my own annotation like @InterruptOnTimeout - and when the method is called, the interceptor looks for the existance of this annotation on the method and if it finds it, it grabs the transaction and adds my own checked action to it (I am assuming the interceptor has the ability to call some APIs to do this).

OK, I'll ask this in a different way...

If I write my own EJB3 interceptor (using @AroundInvoke and defined with <interceptor-binding>), how can I get the transaction that is associated with the active thread that is executing the request?

If I can get the transaction that the EJB3 invocation is running in , I think I can do what I want from there, but I have to be able to get the underlying Arjuna/JBossTM transaction object for this to work.

Ah...good suggestion. I just tried that (looked up the java:/TransactionManager from JNDI and executed the getTransaction() method from the object that lookup returned.

And, it turns out, it looks like I don't even have to do that much. I found that rather than going through JNDI, I can simply do this:

com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.getTransaction()

<interceptor-binding>
 <ejb-name>*</ejb-name>
 <interceptor-class>org.abc.TransactionInterruptInterceptor</interceptor-class>
</interceptor-binding>

public class TransactionInterruptCheckedAction extends CheckedAction {
 @Override
 public synchronized void check(boolean isCommit, Uid actUid, Hashtable list) {
 for (...each thread in the list...) {
 thread_from_list.interrupt();
 }
 super.check(isCommit, actUid, list);
 }
}

For those interested, turns out, there is a very easy JBossTM API that I can use in my interceptor code to do what I want... this static method:

com.arjuna.ats.arjuna.coordinator.BasicAction.Current.setCheckedAction()