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Thomas Andraschko commented on MYFACES-4285: -------------------------------------------- [~ivy-arus] sure, would be great if you can provide a PR! > NullPointerException because of 4099 > ------------------------------------ > > Key: MYFACES-4285 > URL: https://issues.apache.org/jira/browse/MYFACES-4285 > Project: MyFaces Core > Issue Type: Bug > Affects Versions: 2.3.0-beta, 2.3.0, 2.3.1, 2.3.2, 2.3.3, 2.3.4 > Reporter: Jiyan Akgül > Assignee: Thomas Andraschko > Priority: Major > Fix For: 2.3-next-M1, 2.3.4 > > Attachments: mf4285.zip > > > The improvement 4099 introduced with version 2.3 leads to a > NullPointerException in +TagAttributeImpl.java:550 [View File on > Github|https://github.com/apache/myfaces/blob/myfaces-core-module-2.3.3/impl/src/main/java/org/apache/myfaces/view/facelets/tag/TagAttributeImpl.java#L550]+ > > {code:java} > Location ccLocation = (Location) actx.getFaceletCompositionContext(). > getCompositeComponentFromStack().getAttributes().get( > CompositeComponentELUtils.LOCATION_KEY);{code} > getCompositeComponentFromStack() returns null, because there is no stack. > The composite component is not calling any child components and used inside a > ui:composition > > Usage of composite component in test.xhtml (simplified) > > {code:java} > <?xml version='1.0' encoding='UTF-8' ?> > <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" > "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> > <ui:composition xmlns="http://www.w3.org/1999/xhtml" > xmlns:cw="http://xmlns.jcp.org/jsf/composite/components" > xmlns:ui="http://java.sun.com/jsf/facelets"> > <cw:attributeGroup > saveListener="#{customerBean.updateAttributeContainer(cc.wrapper)}" > wrapper="#{attributeGroup}" /> > </ui:composition>{code} > The problem is caused because of "cc.wrapper". This worked in 2.2 and now we > can't update. > > Error displayed on page (not helpful) > > {code:java} > /test.xhtml at line 16 and column 37 > saveListener="#{customerBean.updateAttributeContainer(cc.wrapper)}" null > viewId=/test.xhtml > location=C:\data\workspace-eclipse\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\provDB-webapp\test.xhtml > phaseId=RENDER_RESPONSE(6) > Caused by: > java.lang.NullPointerException - /test.xhtml at line 16 and column 37 > saveListener="#{customerBean.updateAttributeContainer(cc.wrapper)}" null > at > org.apache.myfaces.view.facelets.tag.TagAttributeImpl.getValueExpression(TagAttributeImpl.java:550) > {code} > Stack Trace > > {code:java} > javax.faces.view.facelets.TagAttributeException: /test.xhtml at line 16 and > column 37 saveListener="#{customerBean.updateAttributeContainer(cc.wrapper)}" > null > at > org.apache.myfaces.view.facelets.tag.TagAttributeImpl.getValueExpression(TagAttributeImpl.java:578) > at > org.apache.myfaces.view.facelets.tag.composite.CompositeComponentRule$ValueExpressionMetadata.applyMetadata(CompositeComponentRule.java:101) > at > org.apache.myfaces.view.facelets.tag.MetadataImpl.applyMetadata(MetadataImpl.java:45) > at > org.apache.myfaces.view.facelets.tag.composite.CompositeComponentResourceTagHandler.setAttributes(CompositeComponentResourceTagHandler.java:488) > at > org.apache.myfaces.view.facelets.tag.jsf.ComponentTagHandlerDelegate.apply(ComponentTagHandlerDelegate.java:290) > at > javax.faces.view.facelets.DelegatingMetaTagHandler.apply(DelegatingMetaTagHandler.java:51) > at > org.apache.myfaces.view.facelets.tag.ui.CompositionHandler.apply(CompositionHandler.java:160) > at > org.apache.myfaces.view.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:59) > at > org.apache.myfaces.view.facelets.compiler.EncodingHandler.apply(EncodingHandler.java:48) > at > org.apache.myfaces.view.facelets.impl.DefaultFacelet.apply(DefaultFacelet.java:187) > at > org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.buildView(FaceletViewDeclarationLanguage.java:483) > at > org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:79) > at > org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:266) > at javax.faces.webapp.FacesServlet.service(FacesServlet.java:206) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) > at > org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) > at > org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61) > at > org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) > at > org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) > at > org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) > at > org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) > at > org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449) > at > org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365) > at > org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) > at > org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) > at > org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383) > at > org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362) > at > org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) > at > de.my.core.tomcat.reverseproxy.ReverseProxySessionManager.doFilter(ReverseProxySessionManager.java:49) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:200) > at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) > at > org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490) > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) > at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) > at > org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) > at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) > at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) > at > org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) > at > org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) > at > org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:834) > at > org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1415) > at > org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) > at > org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) > at java.lang.Thread.run(Thread.java:748) > Caused by: java.lang.NullPointerException > at > org.apache.myfaces.view.facelets.tag.TagAttributeImpl.getValueExpression(TagAttributeImpl.java:550) > ... 52 more > {code} > > > -- This message was sent by Atlassian Jira (v8.3.4#803005)