How can I update the children after updating a node in a tree?

Question

Hi everyone.
I'm trying to update a subtree programatically while using a managed bean as data source.
All topics I can find are about using VOs and JUCtrlHierNodeBinding.updateValuesFromRows.
Now I need to find some way to directly update nodes without any Row. What should I do?
Here's the code:
tags:
                                <af:tree id="tframe" initiallyExpanded="true"
                                         selectionListener="#{backingBeanScope.systemDataFrameBB.onSelectNode}" var="n"
                                         binding="#{backingBeanScope.systemDataFrameBB.tframe}"
                                         value="#{systemDataFrameMB.treeData}" expandAllEnabled="true"
                                         rowSelection="single" fetchSize="-1" contentDelivery="immediate"
                                         immediate="true" summary="summary">
                                    <f:facet name="nodeStamp">
                                                  <af:group>
                                                  <af:outputText value="#{n.is_system?'[SYSTEM]':''}" />
                                                  <af:outputText value="#{n.is_use?'':'[X]'}" />
                                                                 <af:outputText value="#{n.data_frame_name}"/>
                                                  </af:group>
                                    </f:facet>
                                </af:tree>
managed bean(systemDataFrameMB):
     private ChildPropertyTreeModel treeData;
     public ChildPropertyTreeModel getTreeData() throws SQLException
          if (this.treeData == null)
               AuthAMImpl authAM = this.getAppModule();
               List<DataFrameNode> subTrees = authAM.getDataFrameTrees();    // load with JDBC and POJO
               DataFrameNode root = new DataFrameNode();      // insert all sub-trees into a new tree
               root.setData_frame_id(0);
               root.setData_frame_name("[ROOT]");
               root.setParent_data_frame_id(Integer.MIN_VALUE);
               root.setIs_system(true);
               root.setIs_use(true);
               if (subTrees != null && subTrees.size() > 0)
                    root.setChildren(subTrees);
                    for (DataFrameNode n : subTrees)
                         n.setParent(root);
               this.treeData = new ChildPropertyTreeModel(root, "children");      // I guess this is the simplest way to show hierachical data...
          return this.treeData;
model:
public class DataFrameNode
     private int data_frame_id;
     private String data_frame_name;
     private int parent_data_frame_id;
     private boolean is_use;
     private boolean is_system;
     private DataFrameNode parent;
     private List<DataFrameNode> children;
        // getters/setters are omitted....
backing bean(systemDataFrameBB):
        // edit event handler
     public void onEditResult(DialogEvent de)
          String name = (String)this.getItName().getValue();
          boolean isUse = this.getSbcIsUse().isSelected();
          SystemDataFrameMB dfMB = (SystemDataFrameMB)JSFUtils.resolveExpression("#{systemDataFrameMB}");
          try
               node.setData_frame_name(name);
               node.setIs_use(isUse);
               dfMB.updateNode(node);                   // persist changes, this method will change all the children's 'is_use' field to FALSE when isUse == FALSE
               AdfFacesContext.getCurrentInstance().addPartialTarget(this.getTframe());      // refresh the tree, only the edited node will be updated, but I want the tree to update the whole sub-tree to reflect the change on all its children
          catch (Exception e)
                        // omitted...
        }

Answer 1

I solved the problem using RichTree.visitChildren :)
Maybe not the proper way, but at least it works...
                                <af:tree id="tframe" initiallyExpanded="true"
                                         selectionListener="#{backingBeanScope.systemDataFrameBB.onSelectNode}" var="n"
                                         binding="#{backingBeanScope.systemDataFrameBB.tframe}"
                                         value="#{systemDataFrameMB.treeData}" expandAllEnabled="true" rendered="true"
                                         rowSelection="single" fetchSize="-1" contentDelivery="immediate"
                                         immediate="true" clientComponent="true" summary="summary">
                                    <f:facet name="nodeStamp">
                                        <af:panelGroupLayout id="tg">
                                            <af:clientAttribute name="node_path" value="#{n.node_path}"/>
                                            <af:outputText id="tIsSystem" value="#{n.is_system?'[SYSTEM]':''}"/>
                                            <af:outputText id="tIsUse" value="#{n.is_use?'':'[X]'}"/>
                                            <af:outputText value="(#{n.data_frame_id})#{n.data_frame_name}"/>
                                        </af:panelGroupLayout>
                                    </f:facet>
                                </af:tree>
private static final String PARENT_NODE_PATH = "PARENT_NODE_PATH";
// all nodes should have a 'node_path' property whose value looks like 'id1/id2/id3'
// keep path on view root
FacesContext.getCurrentInstance().getViewRoot().getAttributes().put(PARENT_NODE_PATH, node.getNode_path());
// visit the whole tree to find specified nodes
VisitContext vc = VisitContext.createVisitContext(FacesContext.getCurrentInstance());
RichTree.visitChildren(vc, this.getTframe(), new VisitCallback()
          @Override
          public VisitResult visit(VisitContext visitContext, UIComponent uIComponent)
               if (uIComponent instanceof RichPanelGroupLayout &&
                    visitContext.getFacesContext().getCurrentPhaseId().equals(PhaseId.INVOKE_APPLICATION))
                    String parentPath = (String)visitContext.getFacesContext().getViewRoot().getAttributes().get(PARENT_NODE_PATH);
                    if (parentPath != null & parentPath.length() > 0)
                         // if current node is in the sub-tree then update its state
                         String path = (String)uIComponent.getAttributes().get("node_path");
                         if (path != null && path.length() > parentPath.length() && path.charAt(parentPath.length()) == '/')
                              RichOutputText t = (RichOutputText)uIComponent.findComponent("tIsUse");
                              JSFUtils.refreshTarget(t);
               return VisitResult.ACCEPT;
     });there might be another solution which uses JavaScript:
I found out that the HTML tag ADF generated has a attribute like "id='0_1_2_3'", that means I can find the sub-tree with JavaScript.
But it was not tested 'cause I don't think it would be stable.
it looks like this:
StringBuffer clientId = new StringBuffer(node.getLevel_id() * 4);
while (node != null)
     clientId.insert(0, node.getData_frame_id());
     clientId.insert(0, '_');
     node = node.getParent();
JSFUtils.executeScript("disableSubTree('" + (clientId.length() > 0 ? clientId.substring(1) : clientId.toString()) +"')");
            <af:resource type="javascript">
              function disableSubTree(id)
                  // find the adfrichtree component and traverse it, trying to find the sub-tree and modify the nodes
            </af:resource>