maintaining the current state in weblogic portal

[Prashant Kirtiwar]

hello guys....
I do want ur help as quick as possible...so be there
and hope u respond quickly with the appropriate code...
thnx in advance....

I want to maintain the current state in tree-node structure using net-ui
library in weblogic portal 8.1
here is the scenario....

/* Code is here pls go through it */

public Forward treeState_Revision()
{
String nodeSel = null;

String nodeExpanded = null;

HttpSession session = getRequest().getSession();
TreeNode rootNode = (TreeNode) session.getAttribute("_rootNodeRevision");

/*
* Handles expansion / collapse of a tree node.
*
* Get the String name of the content node or the expandable/collapsable node
* selected by the user.
*/

if(((String)session.getAttribute("NodeSlect"))==null)
{
nodeSel = getRequest().getParameter(TreeNode.SELECTED_NODE);
session.setAttribute("NodeSlect",nodeSel);
}
else
{
nodeSel=(String)session.getAttribute("NodeSlect");
}

if(((String)session.getAttribute("NodeExpanded"))==null)
{
nodeExpanded = getRequest().getParameter(TreeNode.EXPAND_NODE);
session.setAttribute("NodeExpanded",nodeExpanded);
}
else
{
nodeExpanded=(String)session.getAttribute("NodeExpanded");
}

//nodeSel = getRequest().getParameter(TreeNode.SELECTED_NODE);
//session.setAttribute("NodeSlect",nodeSel);

// nodeSel= (String) session.getAttribute("NodeSlect");

//nodeExpanded = getRequest().getParameter(TreeNode.EXPAND_NODE);

//session.setAttribute("NodeExpanded",nodeExpanded);

// nodeExpanded = (String) session.getAttribute("NodeExpand");

/*
* If the user selected an expandable/collapsable node...
*/
if (nodeExpanded != null)
{
/*
* ...then get the TreeNode object based on the node's String name...
*/
TreeNode node = rootNode.findNode(nodeExpanded);
if (node != null)
{
/*
* ...and reverse the expand/collapse state of the node.
* (I.e. if the node was previously collapsed, then expand it;
* if it was previously expanded, then collapse it.)
*/
node.setExpanded(!node.isExpanded());

}
/*
* When a node is selected for expansion/collapse, display changes only in the
* navigation frame.
*/
return new Forward("tree_Revision");
}

return new Forward(nodeSel);
}

/**

with the above code and XML parsing I have created the parent node ,their child nodes..like
*Revision
*2000
*module 1
so how should i maintain the state of selected node...


Regards
Prashant.....