1 Reply Latest reply on Dec 19, 2006 11:28 PM by Gavin King

    Getting error when binding a dataTable to a backbean compone

    Ly Le Newbie

      Hi,

      I have a t:dataTable that binds to a backbean's component as follows:

      <t:dataTable id="sessionTable" forceId="true" var="sess" value="#{alertsList}"
       border="0" cellpadding="0" cellspacing="0" styleClass="listView" width="100%" renderedIfEmpty="true"
       binding="#{alertssearch.sessionTable}" forceIdIndexFormula="#{sess.id}" rowId="#{sess.id}" rowIndexVar="rowIndex"
       rowOnClick="selectRow(this.id, #{rowIndex});" />


      Here is part of the backing bean's code:
      @Name("alertssearch")
      @Scope(ScopeType.SESSION)
      @GALoggedIn
      public class GASessionSearchAction {
      
       @In
       private Session gadb;
       @In(create=true) @Out
       private GAFilter sessionfilter;
       @In
       private GAHostAppInfo hostApp;
       @In
       private FacesMessages facesMessages;
       @Logger
       private Log log;
       @DataModel
       private List<GASession> alertsList;
       @DataModelSelection
       @Out(required=false)
       private GASession selectedSession;
      
      private HtmlDataTable sessionTable;
      
      public HtmlDataTable getSessionTable() {
       if (this.sessionTable == null) {
       sessionTable = populateSessionTable();
       }
       return sessionTable;
      }
      
      public void setSessionTable(HtmlDataTable sessionTable) {
       this.sessionTable = sessionTable;
      }
      ...
      


      The first time I got to the page, the table was rendered fine with no row of course since the data model is empty. When I click on the Search button to execute an ajax request, I got the following exception.
      javax.faces.el.EvaluationException: /main.xhtml @106,52 binding="#{alertssearch.sessionTable}": Exception setting property sessionTable of base with class com.ga.riskapp.session.action.GASessionSearchAction$$EnhancerByCGLIB$$bb9eb7c7
       at com.sun.facelets.el.LegacyValueBinding.setValue(LegacyValueBinding.java:74)
       at org.apache.myfaces.shared_impl.util.RestoreStateUtils.recursivelyHandleComponentReferencesAndSetValid(RestoreStateUtils.java:86)
       at org.apache.myfaces.shared_impl.util.RestoreStateUtils.recursivelyHandleComponentReferencesAndSetValid(RestoreStateUtils.java:57)
       at org.apache.myfaces.shared_impl.util.RestoreStateUtils.recursivelyHandleComponentReferencesAndSetValid(RestoreStateUtils.java:94)
       at org.apache.myfaces.shared_impl.util.RestoreStateUtils.recursivelyHandleComponentReferencesAndSetValid(RestoreStateUtils.java:57)
       at org.apache.myfaces.lifecycle.RestoreViewExecutor.execute(RestoreViewExecutor.java:96)
       at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:95)
       at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:70)
       at javax.faces.webapp.FacesServlet.service(FacesServlet.java:139)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:147)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._invokeDoFilter(TrinidadFilterImpl.java:326)
       at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:290)
       at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:213)
       at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:90)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:46)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:32)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:75)
       at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:213)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
       at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
       at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
       at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
       at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
       at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
       at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
       at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
       at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
       at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
       at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
       at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
       at java.lang.Thread.run(Thread.java:595)
      Caused by: javax.faces.el.EvaluationException: Bean: com.ga.riskapp.session.action.GASessionSearchAction$$EnhancerByCGLIB$$bb9eb7c7, property: sessionTable, newValue: org.apache.myfaces.component.html.ext.HtmlDataTable@d1223d,newValue class: org.apache.myfaces.component.html.ext.HtmlDataTable method parameter class: org.apache.myfaces.component.html.ext.HtmlDataTable
       at org.apache.myfaces.el.PropertyResolverImpl.setProperty(PropertyResolverImpl.java:414)
       at org.apache.myfaces.el.PropertyResolverImpl.setValue(PropertyResolverImpl.java:176)
       at com.sun.facelets.el.LegacyELContext$LegacyELResolver.setValue(LegacyELContext.java:201)
       at com.sun.el.parser.AstValue.setValue(AstValue.java:140)
       at com.sun.el.ValueExpressionImpl.setValue(ValueExpressionImpl.java:255)
       at com.sun.facelets.el.TagValueExpression.setValue(TagValueExpression.java:93)
       at com.sun.facelets.el.LegacyValueBinding.setValue(LegacyValueBinding.java:68)
       ... 42 more
      Caused by: java.lang.reflect.InvocationTargetException
       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
       at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:585)
       at org.apache.myfaces.el.PropertyResolverImpl.setProperty(PropertyResolverImpl.java:409)
       ... 48 more
      Caused by: java.lang.NullPointerException
       at org.jboss.seam.core.Exceptions$DebugPageHandler.handle(Exceptions.java:372)
       at org.jboss.seam.core.Exceptions.handle(Exceptions.java:60)
       at org.jboss.seam.interceptors.ExceptionInterceptor.handleExceptions(ExceptionInterceptor.java:44)
       at sun.reflect.GeneratedMethodAccessor152.invoke(Unknown Source)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:585)
       at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
       at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
       at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
       at org.jboss.seam.interceptors.SynchronizationInterceptor.serialize(SynchronizationInterceptor.java:30)
       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
       at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:585)
       at org.jboss.seam.util.Reflections.invoke(Reflections.java:18)
       at org.jboss.seam.intercept.Interceptor.aroundInvoke(Interceptor.java:169)
       at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:64)
       at org.jboss.seam.intercept.RootInterceptor.createSeamInvocationContext(RootInterceptor.java:148)
       at org.jboss.seam.intercept.RootInterceptor.invokeInContexts(RootInterceptor.java:129)
       at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:102)
       at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:144)
       at org.jboss.seam.intercept.JavaBeanInterceptor.intercept(JavaBeanInterceptor.java:79)
       at com.ga.riskapp.session.action.GASessionSearchAction$$EnhancerByCGLIB$$bb9eb7c7.setSessionTable(<generated>)


      The same thing works before I integrated the app with Seam.
      Any of you know what's going on?
      Thanks.