[jira] [Created] (MYFACES-3613) NPE in composite component when ActionListener is missing in the source

[marco fago (JIRA)]

marco fago created MYFACES-3613:
-----------------------------------

             Summary: 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


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.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira