2 Replies Latest reply on Jun 8, 2011 8:53 AM by Jonas Kemper

    <rich:tree> NullPointerException on row click

    Doug Costa Newbie

      I have a <rich:tree> im using for navigation.  When I click on a row I get a NullPointerException:

       

      SEVERE: java.lang.NullPointerException
      javax.faces.FacesException: java.lang.NullPointerException
              at org.richfaces.component.UIDataAdaptor.invokeOnComponent(UIDataAdaptor.java:1124)
              at org.richfaces.renderkit.TreeRendererBase.decode(TreeRendererBase.java:208)
              at javax.faces.component.UIComponentBase.decode(UIComponentBase.java:787)
              at org.richfaces.component.UIDataAdaptor.processDecodes(UIDataAdaptor.java:824)
              at org.richfaces.context.PartialViewExecuteVisitCallback.visit(PartialViewExecuteVisitCallback.java:55)
              at org.richfaces.context.BaseExtendedVisitContext.invokeVisitCallback(BaseExtendedVisitContext.java:337)
              at org.richfaces.component.UIDataAdaptor.visitTree(UIDataAdaptor.java:1235)
              at javax.faces.component.UIComponent.visitTree(UIComponent.java:1600)
              at javax.faces.component.UIForm.visitTree(UIForm.java:344)
              at javax.faces.component.UIComponent.visitTree(UIComponent.java:1600)
              at javax.faces.component.UIComponent.visitTree(UIComponent.java:1600)
              at org.richfaces.context.ExtendedPartialViewContextImpl.executeComponents(ExtendedPartialViewContextImpl.java:249)
              at org.richfaces.context.ExtendedPartialViewContextImpl.processPartialExecutePhase(ExtendedPartialViewContextImpl.java:229)
              at org.richfaces.context.ExtendedPartialViewContextImpl.processPartial(ExtendedPartialViewContextImpl.java:208)
              at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:931)
              at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:78)
              at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
              at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
              at javax.faces.webapp.FacesServlet.service(FacesServlet.java:409)
              at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1534)
              at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
              at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
              at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
              at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
              at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98)
              at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91)
              at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162)
              at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:326)
              at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:227)
              at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:170)
              at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:822)
              at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:719)
              at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1013)
              at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
              at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
              at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
              at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
              at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
              at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
              at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
              at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
              at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
              at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
              at java.lang.Thread.run(Thread.java:662)
      Caused by: java.lang.NullPointerException
              at org.richfaces.model.ClassicTreeNodeDataModelImpl.setupChildContext(ClassicTreeNodeDataModelImpl.java:49)
              at org.richfaces.model.ClassicTreeNodeDataModelImpl.setupChildContext(ClassicTreeNodeDataModelImpl.java:35)
              at org.richfaces.model.NodesTreeSequenceKeyModel.setupKey(NodesTreeSequenceKeyModel.java:47)
              at org.richfaces.model.TreeSequenceKeyModel.setRowKey(TreeSequenceKeyModel.java:49)
              at org.richfaces.component.UIDataAdaptor.setRowKey(UIDataAdaptor.java:277)
              at org.richfaces.component.UIDataAdaptor.invokeOnComponent(UIDataAdaptor.java:1111)
              ... 43 more
      

       

      I have no clue what is causing this error

       

      Here is my code:

      xhtml:

       

       <h:form id="richSideBarForm" >
           <r:tree  id="richTreeBar" value="#{richTree.rootNode}"  var="node" toggleType="client" selectionType="ajax"
                iconExpanded="/resources/images/FolderOpen_web.png" iconCollapsed="/resources/images/FolderClosed_web.png"
                iconLeaf="/resources/images/Worksheet_web_mini.png" selectionChangeListener="#{richTree.processTreeSelectionChange}">
                     <r:treeNode id="rootNode" >
                          <h:outputText id="rootNodeOutput" value="#{node}" />
                     </r:treeNode>
                     <r:treeNode id="leafNode" >
                          <h:outputText id="leafNodeOutput" value="#{node}" />
                     </r:treeNode>
           </r:tree>
      </h:form>
      

       

      BackingBean:

       

      public class RichTree implements Serializable, TreeSelectionChangeListener{
      
          private TreeNode rootNode;
          private UITree treeBinding;
      
          public RichTree() {
              rootNode = new TreeNodeImpl();
              loadTree();
          }
      
          /**
           * @return the rootNode
           */
          public TreeNode getRootNode() {
              return rootNode;
          }
      
          public void setRootNode(TreeNode rootNode) {
              this.rootNode = rootNode;
          }
      
          private void loadTree() {
              AGOTreeNode summaryNode = new AGOTreeNode();
              summaryNode.setLabel("0000000001");
              getRootNode().addChild(0, summaryNode);
              AGOTreeNode childNode = new AGOTreeNode();
              childNode.setLabel("Node1");
              summaryNode.addChild(0, childNode);
              childNode = new AGOTreeNode();
              childNode.setLabel("node2");
              summaryNode.addChild(1, childNode);
          }
      
          @Override
          public void processTreeSelectionChange(TreeSelectionChangeEvent tsce) throws AbortProcessingException {
              List<Object> selection = new ArrayList<Object>(tsce.getNewSelection());
              Object currentSelectionKey = selection.get(0);
              UITree tree = (UITree) tsce.getSource();
              tree.setRowKey(currentSelectionKey);
              AGOTreeNode node = (AGOTreeNode) tree.getRowData();
              String label= node.getLabel();
              FacesContext fc = FacesContext.getCurrentInstance();
              fc.getApplication().getNavigationHandler().handleNavigation(fc, "", label);
          }
      

       

      AGOTreeNode extends TreeNodeImpl and adds a few feilds and also overwrites the toString method.

       

      Any Help is greatly appreciated!

       

      ---EDIT---

      I dont know if it is important but the navigation tree is part of one xhtml file which is being included in my template using a <ui:include> tag

       

      -Doug Costa