Thursday, September 8, 2011

Problems with Mojarra

In recent Mojarra versions, there was always a problem. JBoss AS 7 comes with Mojarra version 2.0.4-b09. Once the tag a4j:ajax will be used on JSF components you receive the following error message:
javax.faces.FacesException: Unexpected error restoring state for component with id form:inputComponent:input.  Cause: java.lang.ClassCastException: javax.faces.component.StateHolderSaver cannot be cast to [Ljava.lang.Object;.
    at com.sun.faces.application.view.StateManagementStrategyImpl$1.visit(StateManagementStrategyImpl.java:273)
    at com.sun.faces.component.visit.FullVisitContext.invokeVisitCallback(FullVisitContext.java:151)
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1485)
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1496)
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1496)
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1496)
    at javax.faces.component.UIForm.visitTree(UIForm.java:335)
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1496)
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1496)
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1496)
    at com.sun.faces.component.visit.VisitUtils.doFullNonIteratingVisit(VisitUtils.java:75)
    at com.sun.faces.application.view.StateManagementStrategyImpl.restoreView(StateManagementStrategyImpl.java:257)
    at com.sun.faces.application.StateManagerImpl.restoreView(StateManagerImpl.java:181)
    at com.sun.faces.application.view.ViewHandlingStrategy.restoreView(ViewHandlingStrategy.java:123)
    at com.sun.faces.application.view.FaceletViewHandlingStrategy.restoreView(FaceletViewHandlingStrategy.java:448)
    at com.sun.faces.application.view.MultiViewHandler.restoreView(MultiViewHandler.java:148)
    at com.ocpsoft.pretty.faces.application.PrettyViewHandler.restoreView(PrettyViewHandler.java:109)
    at javax.faces.application.ViewHandlerWrapper.restoreView(ViewHandlerWrapper.java:288)
    at javax.faces.application.ViewHandlerWrapper.restoreView(ViewHandlerWrapper.java:288)
    at javax.faces.application.ViewHandlerWrapper.restoreView(ViewHandlerWrapper.java:288)
    at com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:187)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
    at com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:111)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
    at org.jboss.weld.servlet.ConversationPropagationFilter.doFilter(ConversationPropagationFilter.java:67)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
    at com.ocpsoft.pretty.PrettyFilter.doFilter(PrettyFilter.java:118)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
    at org.jboss.seam.servlet.exception.CatchExceptionFilter.doFilter(CatchExceptionFilter.java:65)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
    at org.jboss.seam.servlet.event.ServletEventBridgeFilter.doFilter(ServletEventBridgeFilter.java:72)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
    at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:139)
    at org.jboss.as.web.NamingValve.invoke(NamingValve.java:57)
    at org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:49)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:154)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:362)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:667)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:952)
    at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.ClassCastException: javax.faces.component.StateHolderSaver cannot be cast to [Ljava.lang.Object;
    at org.ajax4jsf.component.behavior.AjaxBehavior.restoreState(AjaxBehavior.java:343)
    at javax.faces.component.UIComponentBase.restoreBehaviors(UIComponentBase.java:2056)
    at javax.faces.component.UIComponentBase.restoreBehaviorsState(UIComponentBase.java:2023)
    at javax.faces.component.UIComponentBase.restoreState(UIComponentBase.java:1443)
    at javax.faces.component.UIOutput.restoreState(UIOutput.java:256)
    at javax.faces.component.UIInput.restoreState(UIInput.java:1379)
    at com.sun.faces.application.view.StateManagementStrategyImpl$1.visit(StateManagementStrategyImpl.java:265)
    ... 51 more

The workaround
The best way to solve this problem, is to switch Mojarra version back to 2.0.2-b10. Download the package from the Mojarra repository. Extract zip file and drop the jsf-impl-2.0.2-b10.jar into:
/your/path/jboss-as-web-7.0.1.Final/modules/com/sun/jsf-impl/main 
Change the module.xml in the same directory to:
<module xmlns="urn:jboss:module:1.0" name="com.sun.jsf-impl">
    <dependencies>
        <module name="javax.faces.api"/>
        <module name="javaee.api"/>
        <module name="javax.servlet.jstl.api"/>
        <module name="org.apache.xerces" services="import"/>
        <module name="org.apache.xalan" services="import"/>
    </dependencies>

    <resources>
        <resource-root path="jsf-impl-2.0.2-b10.jar"/>
    </resources>
</module>

Why not the lastest version?
Currently the latest Mojarra version doesn't invoke Seam Faces s:viewAction methods. Lets cross fingers and hope this issue will be fixed with the upcoming 2.2.0 version.

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