How to search a child node in JTree

Hi I am new to swings..
My requirement is I have a Jsplit pane.
I have search button with a text box in one and Jree in another pane.
When I enter a string and hit Search button...It need to search the tree and expand that node highlight it.
can anyone help in getting this done.

public void actionPerformed(ActionEvent e)
DefaultTreeModel m_model = new DefaultTreeModel(entityRoot);
DefaultMutableTreeNode node = searchNode(m_searchText.getText());
JTree m_tree = new JTree(m_model);
TreePath root = m_tree.getPathForRow(0);
searchTree(m_tree, root, m_searchText.getText());
private void searchTree(JTree tree, TreePath path, String q)
TreeNode node = (TreeNode)path.getLastPathComponent();
if(node==null) return;
if(node.toString().startsWith(q))
   tree.setScrollsOnExpand(true);
   tree.setSelectionPath(path);
if(!node.isLeaf() && node.getChildCount()>=0)
   Enumeration e = node.children();
   while(e.hasMoreElements())
   searchTree(tree, path.pathByAddingChild(e.nextElement()), q);
}Edited by: EJP on 27/06/2011 09:53: added {noformat}{noformat} tags. Please use them.

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Hi,
I would like to remove all the child node of my jtree. For instance I would like to remove the c, d, and e nodes. It's possible to remove all the child node or to remove by her name ("c", "d", and "e"). If yes what is the method that it permit to do.
A-----
|
b-------c
|
|--------d
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---------e
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Thanks

There are a couple of ways it can be done. If your tree uses DefaultTreeModel as its TreeModel, you can use removeNodeFromParent(). This will remove the node from its parent and effectively remove its children, too. All nodes removed will be garbage-collected if there are no other references to them.
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Read child nodes in Jtree

Need some help in reading the child nodes in a jTree after a parent node has been selected.
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Read the tutorial:
http://java.sun.com/docs/books/tutorial/uiswing/components/tree.html#select
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How to store multiple child nodes using dbms_xmlstore

Hi,
I'm using oracle 10g environment. In DBMS_XMLSTORE package I cannot able to insert the multiple child node value into db table.
Here I have given the xml value
<DATAPACKET REQUEST-ID="10001094">
<HEADER>
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        <SURROGATES>
          <SURROGATE ID="CH0001" MATCHED="TRUE"/>
          <SURROGATE ID="CH0002" MATCHED="TRUE"/>
          <SURROGATE ID="CH0003" MATCHED="TRUE"/>
        </SURROGATES>
      </SEARCH-RESULT-ITEM>
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</HEADER>
</DATAPACKET>for this xml data I have created the below table structure
-- Table create script
CREATE TABLE xml_insert (datapacket t_response );
/* Type creation code */
CREATE OR REPLACE TYPE t_response AS OBJECT
"@REQUEST-ID" VARCHAR2(100),
header        t_resp_header
CREATE OR REPLACE TYPE t_resp_header AS OBJECT
"SEARCH-RESULT-LIST"    t_search_item
CREATE OR REPLACE TYPE t_search_item AS OBJECT
("SEARCH-RESULT-ITEM"      t_search_list);
CREATE OR REPLACE TYPE t_search_list AS OBJECT
("@NAME"           VARCHAR2(300),
"@CONFIDENCE-SCORE"      VARCHAR2(300),
"@BUREAU-ID"           VARCHAR2(300),
IDENTIFIERS           t_search_identifiers,
SURROGATES           t_search_surrogates
CREATE OR REPLACE TYPE t_search_identifiers AS OBJECT
(IDENTIFIER           t_search_IDENTIFIER);
CREATE OR REPLACE TYPE t_search_identifier AS OBJECT
"@IDSOURCE"           VARCHAR2(20),
"@MATCHED"           VARCHAR2(20)
CREATE OR REPLACE TYPE t_search_surrogates AS OBJECT
(SURROGATE           t_search_SURROGATE);
CREATE OR REPLACE TYPE t_search_surrogate AS OBJECT
"@ID"                VARCHAR2(20),
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rows NUMBER;
xmldoc CLOB :=
<ROWSET>
<ROW>
<DATAPACKET REQUEST-ID="Q10001094">
<HEADER>
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BEGIN
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ORA-19031: XML element or attribute SURROGATE does not match any in type DOHADEV.T_CRB_SEARCH_SURROGATES
ORA-06512: at "SYS.DBMS_XMLSTORE", line 78
ORA-06512: at line 28

Hi,
A couple of comments to begin with :
- Your setup script, test case and error message are not consistent with each other.
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Do you really need to store the data in an object-relational structure at the end, or do you intend to further break it down into relational rows and columns?
Do you have an XML schema?

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Hi All,
How to fetch child nodes of XNode object ?
I am moving my code to .net 3.5 so i was replacing XMLNode to XNode , but i could find any ChildNodes() method.
Thanks,
Pallavi

As such this is not a SharePoint related question, even though there are many way to parse the XNode object.
One way is,
XNode an all other are derived from XElement, so you can use Linq to get all children by casting it with XElement, below is a snippet
XDocument doc = XDocument.Load(""); //Path
XElement ele = doc.Nodes().First() as XElement;//Just taking the first element as XNode
foreach (var item in ele.Elements())
var v = item;
You can use Full Linq queries to find any node, just for example, below is a snipped to find a node based on a attribute value
ele.Elements().Where(x => x.Attribute("text").Value == "text");
get2pallav
Please click "Propose As Answer" if this post solves your problem or "Vote As Helpful" if this post has been useful to you.

How to retrieve a child node's immediate parent node from a tree table?

Hello
Hi,
I have a category_subcategories table, and I would like to know how to construct a sql and sub-sql for retrieving a child node's immediate parent node.
Here is my first part of the sql, it only returns the node "Flash"'s parent and its grand-parents:
SELECT parent.category_name, node.lft, node.rgt
FROM category_subcategories AS node,
category_subcategories AS parent
WHERE node.lft > parent.lft AND node.lft < parent.rgt
AND node.category_name = 'FLASH'
ORDER BY parent.lft;
| name |
| ELECTRONICS |
| PORTABLE ELECTRONICS |
| MP3 PLAYERS | |
how can I modify this query so that it returns Flash' parent - 'MP3 Players'?
Thanks a lot
Sam

Hi,
This is an Oracle forum. If you're not iusing Oracle, make that clear. Always say what version of your softwate you're using, whether it's Oracle or anything else.
Whenever you have a question, post a little sample data (CREATE TABLE and INSERT statements), and the results you want from that data. Explain how you get those results from that data.
It looks like you're using the Nested Sets technique for modeling a tree. To get the parents of given nodes, do something like this:
SELECT        parent.category_name
,       node.lft
,       node.rgt
FROM        category_subcategories      node     -- Can't use AS with table alias in Oracle
,       category_subcategories      parent
WHERE        parent.lft      IN (
                    SELECT     MAX (lft)
                    FROM     category_subcategories
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AND        node.category_name          = 'FLASH'
ORDER BY parent.lft; This should work in Oracle 8.1 and up. (I can't actually test it unless you post CREATE TABLE and INSERT statements for some sample data). You may need to modify the syntax a little for your database.
785102 wrote:
Hello,
I tried to implement the solution as follow:
mysql> select parent.*
-> from category_subcategories as parent
-> having parent.lft =
-> (select max(parent.lft) from
-> (SELECT parent.category_name, parent.lft, parent.rgt
-> FROM category_subcategories AS node,
-> category_subcategories AS parent
-> WHERE node.lft > parent.lft AND node.lft < parent.rgt
-> AND node.category_name = 'Sofa'
-> ORDER BY parent.lft
-> )
-> );
ERROR 1248 (42000): Every derived table must have its own alias
mysql>
But I got an error.
What is wrong with it?What does the error message say?
Apparantly, in your system (unlike Oracle), every sub-query must have a name. Try something like this:
select      parent.*
from      category_subcategories as parent
having      parent.lft = (
               select      max(parent.lft)
               from     (
                         SELECT        parent.category_name
                         ,       parent.lft
                         ,       parent.rgt
                         FROM        category_subcategories      AS node,
                                category_subcategories      AS parent
                         WHERE        node.lft      > parent.lft
                         AND        node.lft      < parent.rgt
                         AND        node.category_name = 'Sofa'
                         ORDER BY parent.lft     -- Is this a waste of effort?
                    ) AS got_name_lft_and_rgt
              )     AS got_lft
;What is the purpose of having the inner sub-query, the one I called got_name_lft_and_rgt?
Also, in Oracle, an ORDER BY clause in a sub-query doesn;t guarantee that any super-queries will keep that order. Why do you have an ORDER BY clause in the sub-query, and not in the main query?

How to reach at a node of JTree : Urgent

Hay all,
Plz tell me that how to reach at a particular node in a JTree, whose name is known to you.I have used a DefaultTreeModel to create a tree. As
deviceTreeModel=new DefaultTreeModel(rootNode);
tree = new JTree( deviceTreeModel );
Thanks and Regards,
Sharad Agarwal

an inefficient way is to traverse the tree to find the node
DefaultMutableTreeNode root = (DefaultMutableTreeNode) treeModel.getRoot();
public TreeNode getNode(DefaultMutuableTreeNode node, String nodeName){
    if (node.getChildCount() == )
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}once you got the node, you can use the
DefaultTreeModel.insertNodeInto(MutableTreeNode newChild, MutableTreeNode parent, int index)

How to search in particular node

hi
kindly tell how can we limit our search to a particular node instaed of the whole content
thanks in advance

Since it's all text, why not use a real quick Match Pattern (or Regular Expression, but you don't need that much power here), see attached.
Cameron
To err is human, but to really foul it up requires a computer.
The optimist believes we are in the best of all possible worlds - the pessimist fears this is true.
Profanity is the one language all programmers know best.
An expert is someone who has made all the possible mistakes.
To learn something about LabVIEW at no extra cost, work the online LabVIEW tutorial(s):
LabVIEW Unit 1 - Getting Started
Learn to Use LabVIEW with MyDAQ
Attachments:
Two-stage match demo.vi ‏8 KB

How to access parent, child nodes and attributes in XML?

EXAMPLE CODING:
[Embed("assets/Try.xml", mimeType="application/octet-stream")]
private static consTTest:Class;
public static function getTestXML() : XML
var baTest:ByteArrayAsset = ByteArrayAsset( new test() );
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public function SetTest():void
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Regards,
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Hi.
You have error in Try.xml in row 2:
<Child ... "/>
Delete '/', its end of this child.
This is problem...

How to disable a particular node in JTree?

Hi
I am working with an application where in which I have a tree component and when a select a node and click a disable button , I want to disable the selected node(that is no further selection of that node possible until I enable it). I am using DefaultTreeCellRenderer for rendering nodes. I tried the following.
DefaultTreeCellRenderer renderer = (DefaultTreeCellRenderer)tree.getCellRenderer();
JLabel label = (JLabel) renderer.getTreeCellRendererComponent(tree,selectedNode,true,true,false,row,true);
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But it doesn't work.
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Thank you.

Its not going to work if you implement the TreeCEllRenderer, cos' all it does is paint your tree.
What u need to implement is the treeSelectionListener interface,
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You might want to create a list of all the nodes that the user selectes to diable, and then in these methods decide if the node is that then do not allow its selection.

How to create a Child node in Tree object

Hi All,
I have a thought to create a tree with a child object, that the child can able to create through by right click the parent tree having the options to create or delete the child objects.Please Suggest me if there is an possible way.
Thanks
Gopinath

Look at sample programm BCALV_TREE_DEMO,
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How to find Last Child (Node) of a parent

Hi All
I have following data:
PARENT CHILD
1 2
2 3
3 4
4 5
100 101
101 102
200 201
300 301
301 302
302 303
303 304
Now I need the output as below:
Parent Final Child
1 5
100 102
200 201
300 304
Which means, for the parent, it should start with immediate child and traverse through all subsequent parent-child relation ship and should find at ending with the last child for that group.
When the parent child relation is as below: i need to output 1 (first parent in the group) & 5 (last child in the group)
1 - 2 - 3 - 4 - 5
Quick solution could be helpful.
Thanks in advance,
Ram.

It seem that you asked for leafs from all roots.
If so try this
Processing ...
with Test_Data as (
select 1 as parent, 2 as child from dual union all
select 2, 3 from dual union all
select 3, 4 from dual union all
select 4, 5 from dual union all
select 4, 6 from dual union all
select 100, 101 from dual union all
select 101, 102 from dual union all
select 200, 201 from dual union all
select 300, 301 from dual union all
select 301, 302 from dual union all
select 302, 303 from dual union all
select 303, 304 from dual
Levels as (
select child, level as lvl, connect_by_root parent as root
from test_data td
start with parent not in (select child from Test_Data)
connect by parent = prior child
), paths as (
     select child,root,lvl,
          max(lvl) over (partition by root) max_lvl
     from Levels
select root,child
from paths
where lvl= max_lvl
Query finished, retrieving results...
                 ROOT                                   CHILD
                                     1                                      5
                                     1                                      6
                                   100                                    102
                                   200                                    201
                                   300                                    304
5 row(s) retrievedBye Alessandro
Edited by: Alessandro Rossi on 1-set-2008 12.41
I've never imagined that a simple copy and past would do that!
I won't leave it so the new forum supporters ( if any exist ) could see what the cr4p we are using now

Help needed with finding node in JTree

Hi,
In my application i will be entering some string data in a text box for search criteria.
When I click on search, I will get data from database which will be shown as a JTree.
This Jtree will have some nodes in which, node with string entered in the search text box exists.
I need to focus on this node and I have only a string to find this node.
How can I do this?How can I find a node in JTree using string value?
Is there any alternate option by which I can achive my need?
Please suggest.
Thanks.

@OP: please assign your dukes.
@Andre_Uhres: if you don't get rewarded in the next couple of days, please let me know here to get at least one duke for your effort.
Bye.

How to search a child node in JTree

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