Hi all, Need ur inputs about using Container Managed Transaction with MDBs.
I have a MDB which uses some helper classes and a Stateless Session Bean for performing its business logic. I am using Container Managed Transaction for the MDB. Do I need to seperately specify the transaction attribute for the Stateless Session Bean this MDB uses or will it be automatically included in the MDB's transaction. According to Ed Roman: If you use Conatiner Managed Transaction, MDB will read off the message in the same transaction as it performs its business logic.
Also how can I test that transactions are working as expected.
posted 11 years ago
If you want the Stateless Session Bean's methods to run inside the transaction started by the MDB, you should use "Required" as a <trans-attribute>. For example, if inside onMessage() you are calling a session bean named ProcessSession, inside the deployment descriptor for this session bean you should have: <container-transaction> <method> <ejb-name>ProcessSession</ejb-name> <method-name>methodName or '*' for all methods</method-name> </method> <trans-attribute>Required</trans-attribute> </container-transaction> Inside Ed Roman's "Mastering EJB 2nd edition" you can find a pretty detailed explanation about Container Managed Transaction. cheers