Illegal transaction state

[pmills]

I'm getting the "A CMR collection may only be used within the transaction in which it was created" message in JBoss 3.0.4, but it doesn't seem logical...which probably means I'm missing something basic.

I have a ClubEntityBean with a getMembers() CMR method. I attempt to call the method from a ClubSessionBean and it dies on a Collection.iterator() call. (The process starts with a useBean tag in a jsp page.)

If I mark the ClubEntityBean as having transactions Mandatory and the ClubSessionBean as RequiresNew. The error changes to "Transaction required".

I was assuming that requiring a new transaction before invoking the entity bean would satisfy the "Mandatory" state, but the entity bean seems not to recognize it.

Suggestions?

[adrian.brock]

Turn on TRACE logging for
org.jboss.ejb.plugins.TxInterceptorCMT

You will be able to see where transactions
start and stop and which methods are invoked

Regards,
Adrian

[pmills]

Thanks for the suggestion; I'll try that.

I was able to find a workaround by creating a new method in my entity bean which called getMembers and returned a transformation of the data in a new form (Vector). Then I put a RequiresNew constraint on *that* method and everything went fine.

So it appears that the logic was acceptable as long as it didn't cross bean boundries as a CMR Collection.