Creation of tree gets hanged.

Question

Hi
I am creating a tree from BAPI.
The table structure is:
ParentID
ParentDesc
ChildID
ChildDesc
When I create a tree with this information, portal get hanged.....
Here is the code I am using
public void populateTreeValues( java.lang.String selectedValue, int size )
    //@@begin populateTreeValues()
      IWDMessageManager mgr = wdComponentAPI.getMessageManager();   
    mgr.reportSuccess("Inside populateTreeValues");
      wdContext.nodeFoldersTreeRoot().invalidate();
                  for(int i=0; i< wdContext.nodeIT_COLLOBRATION_NODES_FINAL_VAL().size(); i++)
                        temp.put(wdContext.nodeIT_COLLOBRATION_NODES_FINAL_VAL().getIT_COLLOBRATION_NODES_FINAL_VALElementAt(i).getPARENT_ID(),wdContext.nodeIT_COLLOBRATION_NODES_FINAL_VAL().getIT_COLLOBRATION_NODES_FINAL_VALElementAt(i).getPARENT_DESC()); 
                        temp1.put(wdContext.nodeIT_COLLOBRATION_NODES_FINAL_VAL().getIT_COLLOBRATION_NODES_FINAL_VALElementAt(i).getPARENT_ID(),wdContext.nodeIT_COLLOBRATION_NODES_FINAL_VAL().getIT_COLLOBRATION_NODES_FINAL_VALElementAt(i).getPARENT_DESC());
                  Iterator it = temp.entrySet().iterator();
                  while (it.hasNext())
                        mgr.reportSuccess("***************START*********************");
                        mgr.reportSuccess("temp size "+temp.size());
                        Map.Entry pairs = (Map.Entry)it.next();
                        String uniqueParent = (String)pairs.getValue();
                        mgr.reportSuccess("Level1 element is "+uniqueParent);
                        IPrivateFoldersTreeView.IFoldersTreeRootElement level1Element = wdContext.createFoldersTreeRootElement();
                        level1Element.setChild(uniqueParent);
                        wdContext.nodeFoldersTreeRoot().addElement(level1Element);
                        temp1.remove(pairs.getKey());
                        for(int i =0 ; i < wdContext.nodeIT_COLLOBRATION_NODES_FINAL_VAL().size(); i++)
                              if((uniqueParent).equalsIgnoreCase(wdContext.nodeIT_COLLOBRATION_NODES_FINAL_VAL().getIT_COLLOBRATION_NODES_FINAL_VALElementAt(i).getPARENT_DESC()))
                                    //mgr.reportSuccess("unique parent matched with element in node is "+uniqueParent);
                                    IPrivateFoldersTreeView.IFoldersTreeRootElement level2Element = level1Element.nodeChildNode().createFoldersTreeRootElement();
                                    String child = wdContext.nodeIT_COLLOBRATION_NODES_FINAL_VAL().getIT_COLLOBRATION_NODES_FINAL_VALElementAt(i).getCHILD_DESC();
                                    level2Element.setChild(child);
                                    level1Element.nodeChildNode().addElement(level2Element);
                                    String ID = wdContext.nodeIT_COLLOBRATION_NODES_FINAL_VAL().getIT_COLLOBRATION_NODES_FINAL_VALElementAt(i).getCHILD_ID(); 
                                    temp1.remove(ID);
                                    createChildNodes(child,level2Element);                                 
                        temp = temp1;
                        mgr.reportSuccess("temp1 size "+temp1.size());
                        mgr.reportSuccess("***************END*********************");
    //@@end
  public void createChildNodes( java.lang.String childTxt, com.diageo.productdashboard.wdp.IPrivateFoldersTreeView.IFoldersTreeRootElement parentEle )
    //@@begin createChildNodes()
    wdComponentAPI.getMessageManager().reportSuccess("Inside createChildNodes");
      for(int i =0; i< wdContext.nodeIT_COLLOBRATION_NODES_FINAL_VAL().size();i++)
            if(childTxt.equalsIgnoreCase(wdContext.nodeIT_COLLOBRATION_NODES_FINAL_VAL().getIT_COLLOBRATION_NODES_FINAL_VALElementAt(i).getPARENT_DESC()))
                  IPrivateFoldersTreeView.IFoldersTreeRootElement element = parentEle.nodeChildNode().createFoldersTreeRootElement();
                  String child = wdContext.nodeIT_COLLOBRATION_NODES_FINAL_VAL().getIT_COLLOBRATION_NODES_FINAL_VALElementAt(i).getCHILD_DESC();
                        element.setChild(child);
                        parentEle.nodeChildNode().addElement(element);
                        wdComponentAPI.getMessageManager().reportSuccess("Inside if childNode Level "+child);
                        String id = wdContext.nodeIT_COLLOBRATION_NODES_FINAL_VAL().getIT_COLLOBRATION_NODES_FINAL_VALElementAt(i).getCHILD_ID();
                        temp1.remove(id);
                        //recursive function call
                        createChildNodes(child,element);
    //@@end
Please advice as to where the changes have to be made to load the tree successfully.
Thanks in advance for your help

Answer 1

Shivanand,
Have you seen our How To document about trees?
http://otn.oracle.com/products/database/htmldb/howtos/howto_tree.html
Sergio