Disable Abstractlistener when JSF application is shutting down
--------------------------------------------------------------

                 Key: SEAMFACES-96
                 URL: https://issues.jboss.org/browse/SEAMFACES-96
             Project: Seam Faces
          Issue Type: Bug
          Components: Event Bridge
    Affects Versions: 3.0.0.CR1
         Environment: JBoss AS 6
            Reporter: Shane Bryzak
             Fix For: 3.0.0.Final


An exception is thrown while undeploying an application:

13:56:03,145 SEVERE [javax.enterprise.resource.webcontainer.jsf.config] 
Unexpected exception when attempting to tear down the Mojarra runtime: 
org.jboss.seam.solder.beanManager.BeanManagerUnavailableException: Failed to 
locate BeanManager using any of these providers: 
org.jboss.seam.solder.beanManager.DefaultJndiBeanManagerProvider(11), 
org.jboss.seam.solder.beanManager.ServletContainerJndiBeanManagerProvider(10)
        at 
org.jboss.seam.solder.beanManager.BeanManagerLocator.getBeanManager(BeanManagerLocator.java:91)
 [:3.0.0.CR1]
        at 
org.jboss.seam.solder.beanManager.BeanManagerAware.getBeanManager(BeanManagerAware.java:56)
 [:3.0.0.CR1]
        at 
org.jboss.seam.faces.event.AbstractListener.getListeners(AbstractListener.java:25)
 [:3.0.0.CR1]
        at 
org.jboss.seam.faces.event.DelegatingSystemEventListener.getEventListeners(DelegatingSystemEventListener.java:38)
 [:3.0.0.CR1]
        at 
org.jboss.seam.faces.event.DelegatingSystemEventListener.processEvent(DelegatingSystemEventListener.java:26)
 [:3.0.0.CR1]
        at javax.faces.event.SystemEvent.processListener(SystemEvent.java:102) 
[:2.0.3-]
[...]

The offending line 25 in AbstractListener (extends BeanManagerAware) calls 
getBeanManager().  It seems that the BeanManager is not available during 
application shutdown.

JSF publishes the event javax.faces.event.PreDestroyApplicationEvent
So AbstractListener (or perhaps DelegatingSystemEventListener) could listen for 
this event, and disable itself to avoid throwing this error.


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