[jboss-user] [EJB 3.0 Development] - What makes a business method asynchronous?

[jaikiran pai]

jaikiran pai [http://community.jboss.org/people/jaikiran] created the discussion

"What makes a business method asynchronous?"

To view the discussion, visit: http://community.jboss.org/message/552992#552992

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... other than the use of @Asynchronous annotation or it's xml equivalent. >From what I see in the EJB3.1 Spec, Section 4.5.1:

The @Asynchronous annotation is used to designate which business methods are asynchronous.

...
Asynchronous methods can also be designated via the deployment descriptor.



I do however see that in our async interceptor (which has to decide whether to spawn a new thread or continue in the current one), we additionally check for method return type to decide whether it's asynchronous:

// Determine if asynchronous (either returns Future or has @Asynchronous)
      if (invocation.resolveAnnotation(Asynchronous.class) != null || actualMethod.getReturnType().equals(Future.class))



Just wondering whether this is OK. The only side-effect that I can think of, with this implicit rule for asynchronous method, is the difference in transaction semantics for that method invocation.

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