Jiyan Akgül created MYFACES-4286:
------------------------------------
Summary: NullPointerException in TagAttribute.impl caused by
MYFACEs-4099
Key: MYFACES-4286
URL: https://issues.apache.org/jira/browse/MYFACES-4286
Project: MyFaces Core
Issue Type: Bug
Affects Versions: 2.3.3, 2.3.2, 2.3.1, 2.3.0, 2.3.0-beta, 2.3.4
Reporter: Jiyan Akgül
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$1.call(AbstractShiroFilter.java:365)
at
org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
at
org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
at
org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
at
org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
at
org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at
de.controlware.csc.core.tomcat.reverseproxy.ReverseProxySessionManager.doFilter(ReverseProxySessionManager.java:49)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:200)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
at
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at
org.apache.coyote.AbstractProtocol$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}
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