CODEWITHSUNDEEP
ejb
Long HDi
Long HDi

Reputation: 43

EJB without transaction

I am using EJB in order to take advantages of:

  1. Concurrent (instead of creating 2 threads, I divided the work into 2 EJB beans).

  2. Pooling (I use stateless EJB a lot and I love the idea that the pool contains a specific number of bean). This way, I am not afraid of running out of memory. Memory usage is more predictable).

  3. Asynchronous processing (all I need is just an annotation).

Well, the problem is I am using it with MongoDB so I don't need any transaction. I can use @TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED) and @TransactionAttribute(TransactionAttributeType.NEVER) annotations but... it means I must specify it everywhere?

Is there anyway to disable EJB transaction by default?

Upvotes: 4

Views: 8645

Answers (2)

Duloren
Duloren

Reputation: 2711

In an EJB 3.0 container, annotate your EJB (or EJB method) with:

@Stateless
@TransactionManagement(TransactionManagementType.BEAN)
@TransactionAttribute(value=TransactionAttributeType.NEVER)
public class YourBean

for BEAN management. For CONTAINER management instead:

@Stateless
@TransactionManagement(TransactionManagementType.CONTAINER)
@TransactionAttribute(value=TransactionAttributeType.NEVER)
public class YourBean

Upvotes: 9

Rendón
Rendón

Reputation: 300

The default value is managed by the container but if you dont specify nothing to do i think you solve your problem.

Or annotate all the Ejb to don´t support transaction

@Stateless
@TransactionManagement(TransactionManagementType.NEVER)
public class YourBean

Remember that the ejb transactions are executed in a hierarchical way, ie if the first method being invoked does not support methods "children methods" are handled in the same way

Upvotes: 1

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