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From "Caius Gran (Created) (JIRA)" <...@myfaces.apache.org>
Subject [jira] [Created] (TRINIDAD-2232) ComponentContextManagerImpl.resume() fails on null _stack member variable
Date Mon, 05 Mar 2012 07:08:59 GMT
ComponentContextManagerImpl.resume() fails on null _stack member variable
-------------------------------------------------------------------------

                 Key: TRINIDAD-2232
                 URL: https://issues.apache.org/jira/browse/TRINIDAD-2232
             Project: MyFaces Trinidad
          Issue Type: Bug
    Affects Versions: 2.0.2-core
         Environment: tomcat 6.0.20, myfaces 2.0.11, java 1.6.0_22, trinidad svn r1294382
(2.0.2-snapshot)
            Reporter: Caius Gran


I couldn't figure out a simple case for reproducing this, but judging by the debugging I did,
the reason seems to be a pushChange()/popChange() -cycle of some children (or grand-children
or etc) 
components as a side effect leaving the "_stack" member variable null.

An example resulting stack trace:

java.lang.NullPointerException
	at org.apache.myfaces.trinidad.context.ComponentContextManagerImpl.resume(ComponentContextManagerImpl.java:179)
	at org.apache.myfaces.trinidad.component.UIXDocument.tearDownVisitingContext(UIXDocument.java:118)
	at org.apache.myfaces.trinidad.component.UIXComponent.visitTree(UIXComponent.java:595)
	at org.apache.myfaces.trinidad.component.UIXComponent.visitTree(UIXComponent.java:362)
	at javax.faces.component.UIComponent.visitTree(UIComponent.java:810)
	at javax.faces.component.UIComponentBase.visitTree(UIComponentBase.java:1073)
	at org.apache.myfaces.application.NavigationHandlerImpl.handleNavigation(NavigationHandlerImpl.java:172)
	at org.apache.myfaces.trinidadinternal.application.NavigationHandlerImpl.handleNavigation(NavigationHandlerImpl.java:117)
	at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:151)
	at org.apache.myfaces.trinidad.component.UIXCollection.broadcast(UIXCollection.java:177)
	at org.apache.myfaces.trinidad.component.UIXCollection.broadcast(UIXCollection.java:160)
	at org.apache.myfaces.trinidad.component.UIXCollection.broadcast(UIXCollection.java:177)
	at org.apache.myfaces.trinidad.component.UIXCollection.broadcast(UIXCollection.java:160)
	at javax.faces.component.UIViewRoot._broadcastAll(UIViewRoot.java:990)
	at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:280)
	at javax.faces.component.UIViewRoot._process(UIViewRoot.java:1275)
	at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:728)
	at org.apache.myfaces.lifecycle.InvokeApplicationExecutor.execute(InvokeApplicationExecutor.java:38)
	at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:171)
        ...


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