Web Dynpro TreeView with BAPI

Question

Hi all,
I made the Java tutorial treeView in Webdynpro with any problems.
Now, I used the "BAPI_USER_GETLIST" to list users in my treeview with a userList Model.
When I click on a user Node I want to add child node with the user details information
getting by the "BAPI_USER_GETDETAIL".
In the Event OnAction of the TreeNodeType, when I execute my BAPI_USER_GETDETAIL with username as
input parameter
how can I add dynamically child nodes with the output values from "BAPI_USER_GETDETAIL" ?
Thanks in advance,
Mathieu

Answer 1

Thanks Armin,
I have solved my problem.
my Context looks like :
-BAPI_User_GetDetail_Input = ModelNode
-BAPI_User_GetList_Input = ModelNode
-TreeNode = ValueNode
--Child = Recursion Node
--Icon = Value Attribute
--Text = value Atrribute
In the wdDoInit method of my Controller, I have this code :
  public void wdDoInit()
    //@@begin wdDoInit()
          // Execute BAPI Call
          try
               Bapi_User_Getlist_Input inp = new Bapi_User_Getlist_Input();
               wdContext.nodeBAPI_User_GetList_Input().bind(inp);
               wdContext
                    .currentBAPI_User_GetList_InputElement()
                    .modelObject()
                    .execute();
          catch (Exception e)
               wdComponentAPI.getMessageManager().reportException(
                    "Exception " + e,
                    true);
          //     creating a topLevel Element (UserElement)
          IPublicUserController.ITreeNodeElement level1element;
          // for all users, add them tho root node and do query to get theyr roles
          int size = wdContext.nodeUserlist().size();
          wdContext.nodeUserlist().moveFirst();
          for (int i = 0; i < size; i++)
               // current user, name of the node
               String username = wdContext.currentUserlistElement().getUsername();
               // set infos and add to the tree
               level1element = wdContext.createTreeNodeElement();
               level1element.setText(username);
               level1element.setIcon("user.gif");
               wdContext.nodeTreeNode().addElement(level1element);
               // Making BAPI call for details
               wdThis.ExecuteBAPIUserDetail(username);
               // for all Elements from BAPI call, add them to tree
               int size2 = wdContext.nodeActivitygroups().size();
               // moving to first Element
               wdContext.nodeOutputDetail().moveFirst();
               for (int j = 0; j < size2; j++)
                    String rolename =
                         wdContext
                              .nodeActivitygroups()
                              .currentActivitygroupsElement()
                              .getAgr_Name();
                    // add to the tree
                    IPrivateUserController.ITreeNodeElement level2element =
                         level1element.nodeChild().createTreeNodeElement();
                    level2element.setText(rolename);
                    level2element.setIcon("role.gif");
                    level1element.nodeChild().addElement(level2element);
                    // next element
                    wdContext.nodeActivitygroups().moveNext();
               // moving to the next user
               wdContext.nodeUserlist().moveNext();
    //@@end
Message was edited by: Armin Reichert
(Added code tag)