Problem with dynamic add nodes with rich:tree

[richard1978]

Currently I am developing dynamic tree menu. Due to the large data, I can only load and display the first level data. Only when user expand the second level of the node, back end service will fetch data back. Now the problem is I have already add the data to the TreeNode object, however the UI does not render the new nodes to the tree.

Any one can help me to solve the problem?

I am using richfaces-api-3.3.1GA & richfaces-impl-3.3.1 GA

Here is my code

Xhtml:

<f:view>
 <a4j:form>
 <!--<a4j:region renderRegionOnly="true" id="ajaxRegionId">-->
 <a4j:outputPanel ajaxRendered="true">
 <rich:panel>
 <rich:tree id="clientTree" value="#{clientTreeController.clients}" var="item"
 reRender="NodeId" ajaxSubmitSelection="true" switchType="ajax"
 treeNodeVar="TreeNodeVar" ajaxKeys="#{null}">
 <rich:treeNode id="treeNodeId" iconLeaf="/img/Transpusers.png"
 icon="/img/Transpusers.png"
 nodeSelectListener="#{clientTreeController.viewUsers}">
 <h:outputText id="NodeId" value="#{item}"/>
 </rich:treeNode>
 </rich:tree>
 </rich:panel>
 </a4j:outputPanel>
 <!--</a4j:region>-->
 </a4j:form>
</f:view>

ClientTreeController.java

@SuppressWarnings({"unchecked"})
 public void viewUsers(NodeExpandedEvent evt) throws IOException {
 System.out.println("Execute viewUsers method");
 Object source = evt.getSource();
 if (source instanceof HtmlTreeNode) {
 UITree tree = ((HtmlTreeNode) source).getUITree();
 if (tree == null) {
 return;
 }
 Object rowKey = tree.getRowKey();
 TreeNode selectedTreeModelNode = tree.getModelTreeNode(rowKey);

 if (null != selectedTreeModelNode) {
 System.out.println("The selected node has child [" + selectedTreeModelNode.getChildren().hasNext()+"]");
 String companyName = (String) selectedTreeModelNode.getData();

 Client client = clientManager.getClientByName(companyName);

 List<UserEntityData> users = client.getUsers();
 if (users == null) return;

 for (int k = 0; k < users.size(); k++) {
 TreeNodeImpl userNode = new TreeNodeImpl();

 userNode.setData(users.get(k).getUserName());
 userNode.setParent(selectedTreeModelNode);
 selectedTreeModelNode.addChild(k, userNode);
 }
 } else {
 System.out.println("selectedTreeNode is null");
 }
 }
 }

[richard1978]

I found the reason is after I update the value to the selected node, the container will call clientTreeController.clients again, then it will overwrite my previous settings. How to prevent this?

[ilya_shaikovsky]

valueBinding called at decode and rendering phases. And this is not RichFaces specific but works according to JSF spec.