@DataModelSelection question
xinhua Feb 1, 2008 9:57 AMHi,all
I have a very simple test code for @DataModel @DataModelSelection,but it does not work...:(. The list is shown correctly, but everytime i click on a row, a ClassCastException comes.... :(((
here is the code:
@Name("siteeditorPB") @Scope(ScopeType.CONVERSATION) public class SiteEditorBean { @Logger private Log log; @In(create = true,value="siteeditor_glue") SiteEditorGBean sglue; @DataModel List<Page> pages; @DataModelSelection Page page; @Factory(scope=ScopeType.CONVERSATION) @Begin(join=true) public List<Page> getPages() { //load data from DB return sglue.loadAllPages(); } @Begin(join=true) public void selectPage(){ if(page!=null){ log.info("---------> #0 selected", page.getName()); } } }
xhtml
<h:form> <rich:dataTable id="pages" value="#{pages}" var="page" rows="10" width="100%"> <a4j:support event="onRowClick" action="#{siteeditorPB.selectPage}" ignoreDupResponses="true" /> <rich:column> <f:facet name="header"> <h:outputText value="ID"/> </f:facet> <h:outputText value="#{page.id}"/> </rich:column> <rich:column> <f:facet name="header"> <h:outputText value="Name"/> </f:facet> <h:outputText value="#{page.name}"/> </rich:column> </rich:dataTable> </h:form>
CCE exception:
15:41:48,468 FATAL [application] /pages/group_header/god.xhtml @37,102 action="#{siteeditorPB.selectPage}": java.lang.ClassCastException: java.util.ArrayList javax.faces.el.EvaluationException: /pages/group_header/god.xhtml @37,102 action="#{siteeditorPB.selectPage}": java.lang.ClassCastException: java.util.ArrayList at com.sun.facelets.el.LegacyMethodBinding.invoke(LegacyMethodBinding.java:73) at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:91) at javax.faces.component.UICommand.broadcast(UICommand.java:383) at org.ajax4jsf.component.AjaxActionComponent.broadcast(AjaxActionComponent.java:62) at org.ajax4jsf.component.UIDataAdaptor.broadcast(UIDataAdaptor.java:1198) at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:184) at org.ajax4jsf.component.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:162) at org.ajax4jsf.component.AjaxViewRoot.processApplication(AjaxViewRoot.java:350) at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:97) at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251) at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:244) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83) at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141) at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281) at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:580) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:595) Caused by: java.lang.ClassCastException: java.util.ArrayList at org.jboss.seam.databinding.DataModelBinder.getSelection(DataModelBinder.java:14) at org.jboss.seam.Component.injectDataModelSelection(Component.java:1497) at org.jboss.seam.Component.injectDataModelSelections(Component.java:1478) at org.jboss.seam.Component.inject(Component.java:1417) at org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:45) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) at org.jboss.seam.persistence.ManagedEntityIdentityInterceptor.aroundInvoke(ManagedEntityIdentityInterceptor.java:48) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) at org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:31) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) at org.jboss.seam.core.ConversationInterceptor.aroundInvoke(ConversationInterceptor.java:56) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:42) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:106) at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:166) at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:102)
can anyone help?
thanks in advance