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https://issues.apache.org/jira/browse/MYFACES-3613?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13470947#comment-13470947
]
marco fago commented on MYFACES-3613:
-------------------------------------
Sounds fair. I agree.
> 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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