[jsr-314-open] request for listeners to support container injection and life-cycle callbacks

[Kito Mann]

On Tue, Jul 21, 2009 at 12:42 AM, Dan Allen <dan.j.allen at gmail.com> wrote:

> One of the questions that is often raised when discussing Java EE
> integration (JSR-299 and EJB) is how to get a reference to a
> container-managed resource from within a JSF listener (e.g., EJB session
> bean, BeanManager, EntityManager). While Java EE certainly provides
> mechanisms to lookup up a resource, such as through JNDI, I think we need to
> restate the question at hand. Why is it that JSF listeners don't support
> Java EE resource injection like managed beans. Requiring this functionality
> in a Java EE environment would go a long way towards making JSF extensions
> (such as Seam or ADF) portable and generally make the effort of integration
> w/ container-managed resources easier.
>
> With that said, I would like to propose for the next rev of the JSF
> specification that listeners, in addition to managed beans, support
> container injection and life-cycle callbacks when JSF is run in a Java EE
> environment (the rule for servlet containers would parallel that of managed
> beans today).
>
> Listeners include:
>
> PhaseListener
> SystemEventListener
> BehaviorListener? (not sure)


So the easiest way to do this would be to accept an expression any time a
listener is declared, correct? This is possible today with the <f:view> tag
for PhaseListeners, but not in faces-config.xml. In the other cases, we do
have support for expressions.

>
>
> -Dan
>
> --
> Dan Allen
> Senior Software Engineer, Red Hat | Author of Seam in Action
> Registered Linux User #231597
>
> http://mojavelinux.com
> http://mojavelinux.com/seaminaction
> http://in.relation.to/Bloggers/Dan
>
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