Recursive and loadable webdynpro tree

Hi
I was trying the "Constructing a Recursive and loadable webdynpro tree" example...I completed all the steps.But when I deployed it it trew an error
500 Internal Server Error
Failed to process request. Please contact your system administrator.
Could some one tell me where I went wrong....I was able to deploy the sample application for the same
Regards
Krishna

Hi,
please look in the properties of the parent Node from recursive node.
Please check this:
cardinality                     0..n
collectionType     list
initializeLeadSelection     true
selection     0..1
singleton     true
If you show in the first view the Tree
you can get an 500 Internal server error.
Regards
Gunter

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Constructing a Recursive and Loadable Webdynpro tree

Hi ,
When I try to
Construct a Recursive and Loadable Webdynpro tree ,First I downloaded the zip file "12TutWD_Tree_Init.zip" file from "sdn.sap.com" .And I saved it my local drive ie in C:/ , but when i try to get the extracted zip file the resoective path is not showing in the webdynpro inport screen.
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/47ce9b90-0201-0010-59b5-f70826824eee
I am following the above document .
Can any body help regarding where to save the zip file and hoe to get imported to NWDS.
Thank you,
Regards,
Ramana

Hallo Ramana,
extraxt this zip-file to some folder on your hard-drive or directly under the workspace folder of your SAP NetWeaver Developer Studio. Is the project listed within the navigation tab. Open it there when it is closed. Did you open the Web Dynpro Perspective?
Regards, Bertram

Recursive & Loadable WD-Tree-Tutorial: Problems with parameters; NullPointe

Hello all, it's me again
This time I have a problem with the Tutorial called "Constructing a Recursive and Loadable WD-Tree". I followed each step in detail, but when I deploy it all I see several errors/mistakes in my resulting App:
1. I can click on the "directories" in this example and the directory-text is displayed in the InputForm. Normally it should only display "filenames", not directory-names... I checked the bool-properties in the addChildren-method and they are set as it's said in the tut.
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3. I have some Warnings: "TreeNodeType 'onAction.onAction': Parameters of action 'Select' and event 'onAction' are not compatible" and the same again for the second action (LoadChildren). So perhaps problem 2 can be solved by solving no 3?!
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I doublechecked that everything is as said in the tutorial.
Regards
Michael

Hi
I realized I had an "Warning"-Message at my View-Context-Root-Node, where it said "Migrate Context". After I did this I get an "internal server error", Failed to process request.
Hmm, it seems as if there were a lot of changes from NW2004 to NW7.1, cause when I try to deploy the ready-to-deploy-tutorial (downloadable along with the Initial project template from SDN) I get deployment errors.
So I'll stop it now or perhaps try my own implementation (with java.io.File and recursive methods and loadable tree) to get familiar with the tree-thing in WD/Java
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How to scroll to a specific node in the webdynpro tree

Hi all,
I'm developing an application where I need to load and expand a tree upon some action in another view.
Loading the children, expanding nodes and setting a new lead selection (with cl_wd_dynamic_tool=>set_tree_lead_selection) all works fine.
But I did not find a way to scroll the tree, so that the node is in the currently visible area of the tree. Is there a way to do this?
Thanks for your answers!
Best regards,
Frank

Tree is a particular structure, you need to realize a recursive function, specially if the tree with is a recursive TreeNode.
this is a quickly answer, i did this in java.
The idea is the same everywhere, this is an ABAP-LIKE solution, understand and translate in a good ABAP source.
FUNCTION FindNode(TypeNode tree_node, TypeNode node_to_find ).
IF ( tree_node.ELEMENT_ID EQ node_to_find.ELEMENT_ID ).
"""""""    do what you wanna do """""
ELSE.
n = tree_node.GET_NUMBERS_OF_CHILDS;
""""""""" RECURSION
FOR i = 0 TO n.
    child_node = tree_node.GET_CHILD(i).
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ENDFOR.
ENDIF.
ENDFUNCTION.

Accessing KM Content using Webdynpro Tree Application

Hi,
I want to create a webdynpro tree structure application which pulls out the KM Content into the tree Structure. How can i do that? Where can i give the KM path and make the KM documents reflect in the tree?
Does any body have code samples related to this? Can anybody help me out in fixing this issue.
Regards,
Divya

Hello,
Here you have a sample to configure the environment, get access to KM and how to upload a file.
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/a099a3bd-17ef-2b10-e6ac-9c1ea42af0e9?quicklink=index&overridelayout=true
Here, you have a sample code, where you instance a resource (a folder or file into KM repository) and you can do with it whatever you want.
final IResourceFactory aResourceFactory = ResourceFactory.getInstance();
RID rid = new RID(strRid); --> path where your are looking for your folders. "/documents", for instance.
ResourceContext resourceContext = new ResourceContext(WPUMFactory.getServiceUserFactory().getServiceUser("cmadmin_service"));
IResource r = aResourceFactory.getResource(rid, resourceContext);
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Regards,
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WD ABAP: Recursion Nodes that Repeat Tree Nodes with Embedded Tables ???

At Rich H's suggestion, I'm posting this here as well as in the blogs.
Suppose you've got a tree context with a node that has a table embedded under it. (For example, the TREE_WITH_TABLE view of WDR_TEST_EVNT has this kind of context substructure.) Call this node "NODE_WITH_TABLE."
You now define a recursion node underneath "NODE_WITH_TABLE" and specify "NODE_WITH_TABLE" as the repeated node for this recursion node. Call this recurion node "RECURSION_NODE".
Lo and behold - the table fills properly when you're on any instance of "NODE_WITH_TABLE", but not when you're on an instance of "RECURSION_NODE".
I'm hoping that:
a) I'm doing something wrong;
OR
b) There's an easy work-around/alternative I'm not seeing
OR
c) SAP will give recursion nodes enough memory to carry any table(s) embedded in the nodes they're repeating.
'Cause I sure don't want to have to define "n" levels of tree-nodes that have different copies of the same table(s) embedded in them.
Message was edited by: Armin Reichert

/people/david.halitsky/blog/2006/08/16/recursion-nodes-that-repeat-tree-nodes-with-embedded-tables-in-wd-abap-not
Maybe you might want to back out your weblog as it is not really a place to ask these types of questions. Think of it this way, if you are allowed to do this type of weblog, what is stopping any other weblogger. Hence the weblogs would just be another forum, which I don't think anyone wants.
Regards,
Rich Heilman

How to Recursively traverse a Dom Tree

Hi there, I'm new to java and xml and would like to see some sample code on recursively traversing a DOM tree in java, printing out all Element, Text, etc to the console window.
Please help

Use this: DomRead.java at your own risk. caveat: this gets screwed up if the attributes are multi-valued. You can use XPath to get around that. I am struggling with the proper XPath expressions.
import org.xml.sax.*;
import org.w3c.dom.*;
import java.util.*;
* version 1.0
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     public void warning(SAXParseException e)
          e.toString();
     public void fatalError(SAXParseException e)
          e.printStackTrace();
     private static void Log(String log)
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}

Displaying KM content using Webdynpro Tree Application

Hi,
I want to create a webdynpro tree structure application which pulls out the KM Content into the tree Structure. How can i do that? Where can i give the KM path and make the KM documents reflect in the tree?
Does any body have code samples related to this? Can anybody help me out in fixing this issue.
Regards,
Leon

Hi
Try these
http://www.sdn.sap.com/irj/scn/index?rid=/library/uuid/f02b492c-7d76-2a10-86aa-e11e8388fde8
http://www.sdn.sap.com/irj/scn/index?rid=/library/uuid/3095f14c-29c5-2b10-f69e-edcb6f0f1367
Best Regards
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Develop MDM Heirarchy table using Webdynpro Tree

Hi
Can anyone let me know how i can build a MDM Heirarchy table using webdynpro tree.
Thanks

Can you be more specific? Is your problem with MDM or Web Dynpro? And what do you mean by "build an MDM Hierarchy Table"?
Walter

Where do i find daily posted question on sap abap and sap webdynpro abap

Hi
where do we find Daily posted questions on sap abap and sap webdynpro abap in scn sap so that i can go through the questions and answer them .

Hi,
Go to the Content tab of any space and click on discussions. Then you can sort them by date created or any other
For ex: This link for WDA discussions: - Web Dynpro ABAP
You can also click on Receive email notifications for any space to get updates on that space.
hope this helps,
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How to maintain several views of the same data and update a tree

I have an object UiUser, which is displayed in my application in several different views. There are three different views which all have the User object i.e. search results, user tree and user table. Each of the views has the same menu items, so the user can be deleted from any of the views.
What I am trying to work out is how should I ensure the item is updated in all of the views?
I can fire a property change event with the UiUser and update two of the views i.e. search results and user table, but how do I update the tree?
I thought of overiding the equals/hashcode methods of the UserTreeNode to compare uiUser.getId () and I could then search the tree and find the tree node of the required UiUser. But I have reservations about this whole approach as it just seems wrong.
Any ideas of how to keep N views in sync, I really don't want all of the views to have tree nodes as this equally seems wrong. This should be a simple problem to solve and I'm sure lots of people have done it, I'm just not sure which is the best approach to take.
Thanks

Hi Jan,
This is so because each installer has a GUID that is used to check whether the application needs to be upgraded or not. (It's a Microsoft function).
What you can do is create a new installer with a different GUID (copy the installer in the projects), and check witha text editor whether this GUID has changed.
But any specific reason you need two seperate installs? You can run the application twice with a specific INI token:
allowmultipleinstances=True
Ton
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Hi, Java GUI guru. Thank you for your help in advance.
I am working on a File Explorer project with JTree. There are cut, copy and paste item menus in my menu bar. I need three EventAction methods or classes to implements the three tasks. I tried to use Clipboard to copy and paste tree node. But I can not copy any tree node from my tree.
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Hi, Paul Clapham:
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I store the node in a DefaultMutableTreeNode variable, and assign it to another DefaultMutableTreeNode variable. I set up two classes (CopyNode and PasteNode). Here they are as follows:
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import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
import javax.swing.*;
import javax.swing.tree.*;
import javax.swing.event.*;
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TreePath currentSelection;
DefaultMutableTreeNode currentNode;
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import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
import javax.swing.*;
import javax.swing.tree.*;
import javax.swing.event.*;
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private TreeList jtree;
CopyNode copyNode;
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jtree = t;
copyNode = new CopyNode(t);
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I used these two classes objects in "actionPerformed(ActionEvent e)" methods in my tree:
//invoke copyNode
copyItem = new JMenuItem("Copy");
copyItem.addActionListener(copyNode);
//invoke pasteNode
pasteItem = new JMenuItem("Paste");
pasteItem.addActionListener(
new ActionListener(){
public void actionPerformed(ActionEvent e){
pasteName.addObject(copyName.treeNodeName);
When I run the drive code, making a copy some node from my tree list, I got bunch of error messages.
Can you figour out what is wrong in my two classes? If you have sample code, would you mind mail me for reference.
Thank you very much in advance.
X.G.

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Recursive and loadable webdynpro tree

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