1 Reply Latest reply on Oct 18, 2009 7:34 PM by Gerry Smith

    CMR Collections and transaction demarcation

    Gerry Smith Newbie

      I am using JBoss 4.2.1, EJB 2.1.
      I have a session bean which uses a finder to get a collection of entities and creates a list of data transfer objects. The entities have CMR Collections that need to be accessed.
      I am trying to make this work without a transaction, and I'm using XDoclet, so I've used @ejb.transaction type="NotSupported" for the session bean, and @ejb.transaction type="Supports" for the entity beans - the one with finder and also the ones in the CMR Collections.

      I'm getting this exception:
      java.lang.IllegalStateException: A CMR collection may only be used within the transction in which it was created

      Does this mean that you have to be in a transaction when you access a CMR transaction, or am I doing something wrong ?

      (The session bean is called by another session bean which has the default 'required' transaction type, in case that makes a difference).

      Would this happen in Jboss 5 as well ?

      Many thanks,

      Gerry