[seam-issues] [JBoss JIRA] Reopened: (SEAMCRON-2) Implement asynchronous method invocation for managed beans

Martin Kouba (JIRA) jira-events at lists.jboss.org
Fri Aug 19 04:35:29 EDT 2011

     [ https://issues.jboss.org/browse/SEAMCRON-2?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Martin Kouba reopened SEAMCRON-2:

AsynchronousInterceptor is not working correctly. As Marius Bogoevici commented in WELD-862 it is not quite legal to call ctx.proceed() after the interceptor method returns because the state of the interceptor chain is always restored at the end of a proceed() invocation.

So in current impl the chain is proceeded two times to get to target async method in new thread. This by itself does not have to cause errors but problems occur e.g. if using other interceptors on async bean business method - also proceeded twice.

What I suggest is not to call proceed() on passed InvocationContext in new thread but to inject new bean instance and execute its business method again. BTW this would be similar to Seam 2 solution (AsynchronousInterceptor, AsynchronousInvocation).

> Implement asynchronous method invocation for managed beans
> ----------------------------------------------------------
>                 Key: SEAMCRON-2
>                 URL: https://issues.jboss.org/browse/SEAMCRON-2
>             Project: Seam Cron
>          Issue Type: Feature Request
>            Reporter: Dan Allen
>            Assignee: Peter Royle
>             Fix For: 3.0.0.Alpha1
> Implement thread pool-based asynchronous method invocation for managed (non-EJB) beans. This feature allows developers to mark a method for background execution using an annotation.
> {code:java}
> public class BeanWithAsyncMethod {
>    @Asynchronous
>    public void doLongOperation() {
>       ...
>    }
> }
> {code}
> We may consider offering the task control (Future) that EJB 3.1 provides, though you can create that as a separate issue if you deem it follow-up work. See: http://download.oracle.com/javaee/6/tutorial/doc/gkkqg.html 

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