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

On Tue, Jul 21, 2009 at 12:42 AM, Dan Allen <dan.j.allen(a)gmail.com&gt; 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.