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From "Leonardo Uribe (JIRA)" <...@myfaces.apache.org>
Subject [jira] [Updated] (MYFACES-3613) NPE in composite component when ActionListener is missing in the source
Date Fri, 05 Oct 2012 18:10:03 GMT

     [ https://issues.apache.org/jira/browse/MYFACES-3613?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Leonardo Uribe updated MYFACES-3613:
------------------------------------

    Status: Patch Available  (was: Open)
    
> NPE in composite component when ActionListener is missing in the source
> -----------------------------------------------------------------------
>
>                 Key: MYFACES-3613
>                 URL: https://issues.apache.org/jira/browse/MYFACES-3613
>             Project: MyFaces Core
>          Issue Type: Bug
>    Affects Versions: 2.1.8
>         Environment: Java 1.7_05 Win32, Servlet3.0, Jetty8.1.5.v20120716
>            Reporter: marco fago
>         Attachments: MYFACES-3613-1.patch
>
>
> Consider the following component (simpleCommandButton.xhtml)
> <ui:component xmlns="http://www.w3.org/1999/xhtml" 
> 	xmlns:ui="http://java.sun.com/jsf/facelets"
>   	xmlns:h="http://java.sun.com/jsf/html" 
>   	xmlns:p="http://primefaces.org/ui"  	
> 	xmlns:cc="http://java.sun.com/jsf/composite"
>   	>
> 	<cc:interface>
> 		<cc:attribute name="action"/>
> 		<cc:attribute name="actionListener"/>
>         <cc:attribute name="value"/>        
> 	</cc:interface>
> 	<cc:implementation>		
> 		<h:commandButton value="#{cc.attrs.value}" action="#{cc.attrs.action}" actionListener="#{cc.attrs.actionListener}"
immediate="true">			
> 			<cc:insertChildren/>
> 		</h:commandButton>
> 	</cc:implementation>
> </ui:component>
> And in your page:
> <myLib::simpleCommandButton value="Test" action="exit"/>
> When clicking on the button a NPE occurs:
> java.lang.NullPointerException
> 	at org.apache.myfaces.view.facelets.el.ValueExpressionMethodExpression.invoke(ValueExpressionMethodExpression.java:68)
> 	at org.apache.myfaces.view.facelets.el.ContextAwareTagMethodExpression.invoke(ContextAwareTagMethodExpression.java:96)
> 	at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:83)
> 	at javax.faces.event.ActionEvent.processListener(ActionEvent.java:51)
> 	at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:418)
> 	at javax.faces.component.UICommand.broadcast(UICommand.java:103)
> 	at javax.faces.component.UIViewRoot._broadcastAll(UIViewRoot.java:1028)
> 	at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:286)
> 	at javax.faces.component.UIViewRoot._process(UIViewRoot.java:1375)
> 	at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:759)
> 	at org.springframework.faces.webflow.FlowLifecycle.invokePhase(FlowLifecycle.java:118)
> 	at org.springframework.faces.webflow.FlowLifecycle.execute(FlowLifecycle.java:70)
> 	at org.springframework.faces.webflow.JsfView.processUserEvent(JsfView.java:120)
> 	at org.springframework.webflow.engine.ViewState.handleEvent(ViewState.java:226)
> 	at org.springframework.webflow.engine.ViewState.resume(ViewState.java:196)
> 	at org.springframework.webflow.engine.Flow.resume(Flow.java:545)
> 	at org.springframework.webflow.engine.impl.FlowExecutionImpl.resume(FlowExecutionImpl.java:258)
> 	at org.springframework.webflow.executor.FlowExecutorImpl.resumeExecution(FlowExecutorImpl.java:169)
> 	at org.springframework.webflow.mvc.servlet.FlowHandlerAdapter.handle(FlowHandlerAdapter.java:183)
> 	at org.springframework.faces.webflow.JsfFlowHandlerAdapter.handle(JsfFlowHandlerAdapter.java:48)
> 	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
> 	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
> 	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
> 	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:755)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
> 	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:643)
> 	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1331)
> 	at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79)
> 	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1302)
> 	at net.sf.ehcache.constructs.web.filter.GzipFilter.doFilter(GzipFilter.java:95)
> 	at net.sf.ehcache.constructs.web.filter.Filter.doFilter(Filter.java:86)
> 	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1302)
> 	at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java
> probably because of the missing (null) attribute "actionListener" in the source declaration.

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