Deletion of node in Tree

I have to delete all selected node in JTree. any idea.

..if root is also selected with child and only child should get deleted..For each delete-candidate node x you could check if there is a delete-candidate node y
(other than x) that has node x in its PathToRoot-array ( DefaultTreeModel#getPathToRoot(y) ).
If yes, simply set the path of x to null, so you can skip the nulls later on.
Message was edited by:
Andre_Uhres
Message was edited by:
Andre_Uhres

Similar Messages

  • Help on Deleting Node in Tree?

    I'm trying to delete a node on a tree and some weird stuff is
    occurring. Here is my code:
    <?xml version="1.0" encoding="utf-8"?>
    <mx:Application xmlns:mx="
    http://www.adobe.com/2006/mxml"
    initialize="init();" layout="absolute">
    <mx:Script>
    <![CDATA[
    private function click () : void {
    if (MyTree.selectedItems.length > 0) {
    var items:Array = MyTree.selectedItems;
    for (var i:int = 0; i < items.length; i++) {
    var nodeToDelete:XML = XML(items
    var xlcParent:XMLListCollection = new
    XMLListCollection(nodeToDelete.parent().children());
    var iIndex:int = xlcParent.getItemIndex(nodeToDelete);
    xlcParent.removeItemAt(iIndex);
    ]]>
    </mx:Script>
    <mx:XMLListCollection id="MyDP">
    <mx:XMLList>
    <root label="Default Policy">
    <node label="node1"/>
    <node label="node2"/>
    <node label="node3"/>
    <node label="node4"/>
    <node label="node5">
    <node label="node1"/>
    <node label="node2"/>
    <node label="node3"/>
    <node label="node4"/>
    <node label="node5">
    <node label="node1"/>
    <node label="node2"/>
    <node label="node3"/>
    <node label="node4"/>
    </node>
    </node>
    </root>
    </mx:XMLList>
    </mx:XMLListCollection>
    <mx:Tree labelField="@label" id="MyTree"
    dataProvider="{MyDP}" x="141" y="109" width="528" height="440"/>
    <mx:Button click="click();" x="141" y="557" label="Delete
    Selected Node"/>
    </mx:Application>
    For some reason when I expand all the nodes and try to delete
    one of the great grand children all of the great grand children
    shift over as if they are siblings of the node that I deleted the
    great grand children from.
    Anyone have some good ideas? I sure wish deletion of nodes
    was as easy as in actionscript 2.0

    There a quite a few posts about this problem here already -
    it seems to be a tree rendering bug (seems to come in various
    different flavours).
    The safest work around after fiddling with the nodes in the
    tree is to get the axe out and reassign the data provider. To be
    nice to the user, you might want to keep the expansion state (this
    may not work if you made big "structural" changes to the tree).
    The following works for me (after your changed the tree data
    model):
    var openItems:Object = treeopenItems;
    tree.dataProvider = tree.dataProvider;
    this.openItems = openItems;
    Hope this helps.
    Robert.

  • Deleting a RichTree component tree node

    Hi,
    I would like to delete a node in a tree and have that reflected in my tree model. Can anyone help with some sample code on how to do this? I'm using the RichTree component in JDev 11g.
    Thanks
    Colin

    Colin,
    Here are two good blog entries that demonstrates how-to programmatically manipulate the tree component and its underlying CollectionModel. In 11 the APIs on the CollectionModel remain unchanged other than being repackaged into an Apache Trinidad package. Neither entry shows you how to delete a node but this is as simple as removing an item from the CollectionModel and refreshing the tree. See if that helps.
    http://technology.amis.nl/blog/?p=1313
    http://thepeninsulasedge.com/blog/2006/10/10/adf-faces-working-with-the-aftree/
    --Ric                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

  • Problem in delting child node from tree

    Hello friends I have a problem in tree component
    I am using Xml File with creator .
    I am showing company name as a root node
    then department name as a child of company name
    then employee name as a child of department
    Initialy its working fine ,user can add edit and delete any node
    In add and edit option I have no problem but in delete I hava a problem
    when I am deleting any child node and after deleting the node I am clicking on the root node of the deleted node the it gives me null pointer Ecxeption .
    but user added any child node and then delete it then Application work properly .
    What is the problem I can't Understand please help me
    thanks
    Raviraj Gangrade

    thanks deepsix for helping me
    it gives me java.lang.NullPointerException and class name is
    net.sf.saxon.dom.NodeWrapper$ChildEnumeration
    here is my Stack Trace
    javax.faces.FacesException: #{Graphs.childNode_action}: javax.faces.el.EvaluationException: java.lang.NullPointerException
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:78)
    at com.sun.rave.web.ui.appbase.faces.ActionListenerImpl.processAction(ActionListenerImpl.java:57)
    at javax.faces.component.UICommand.broadcast(UICommand.java:312)
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:267)
    at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:307)
    at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:79)
    at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:221)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:90)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)
    at sun.reflect.GeneratedMethodAccessor270.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:585)
    at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:249)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
    at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:282)
    at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:165)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:257)
    at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
    at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:161)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
    at com.sun.rave.web.ui.util.UploadFilter.doFilter(UploadFilter.java:194)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
    at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:161)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:263)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
    at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:225)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:132)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
    at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:933)
    at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:189)
    at com.sun.enterprise.web.connector.grizzly.ProcessorTask.doProcess(ProcessorTask.java:604)
    at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:475)
    at com.sun.enterprise.web.connector.grizzly.ReadTask.executeProcessorTask(ReadTask.java:371)
    at com.sun.enterprise.web.connector.grizzly.ReadTask.doTask(ReadTask.java:264)
    at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:281)
    at com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:83)
    Caused by: javax.faces.el.EvaluationException: java.lang.NullPointerException
    at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:130)
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:72)
    ... 44 more
    Caused by: java.lang.NullPointerException
    at pegasusweb.Graphs.childNode_action(Graphs.java:1075)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:585)
    at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:126)
    ... 45 more
    |#]
    [#|2006-11-30T14:51:30.000+0530|SEVERE|sun-appserver-pe8.2|javax.enterprise.system.container.web|_ThreadID=16;|StandardWrapperValve[Faces Servlet]: Servlet.service() for servlet Faces Servlet threw exception
    com.sun.rave.web.ui.appbase.ApplicationException: #{Graphs.childNode_action}: javax.faces.el.EvaluationException: java.lang.NullPointerException
    at com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.destroy(ViewHandlerImpl.java:601)
    at com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.renderView(ViewHandlerImpl.java:302)
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87)
    at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:221)
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)
    at sun.reflect.GeneratedMethodAccessor270.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:585)
    at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:249)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
    at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:282)
    at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:165)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:257)
    at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
    at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:161)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
    at com.sun.rave.web.ui.util.UploadFilter.doFilter(UploadFilter.java:194)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
    at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:161)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:263)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
    at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:225)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:132)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
    at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:933)
    at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:189)
    at com.sun.enterprise.web.connector.grizzly.ProcessorTask.doProcess(ProcessorTask.java:604)
    at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:475)
    at com.sun.enterprise.web.connector.grizzly.ReadTask.executeProcessorTask(ReadTask.java:371)
    at com.sun.enterprise.web.connector.grizzly.ReadTask.doTask(ReadTask.java:264)
    at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:281)
    at com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:83)
    Caused by: javax.faces.FacesException: #{Graphs.childNode_action}: javax.faces.el.EvaluationException: java.lang.NullPointerException
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:78)
    at com.sun.rave.web.ui.appbase.faces.ActionListenerImpl.processAction(ActionListenerImpl.java:57)
    at javax.faces.component.UICommand.broadcast(UICommand.java:312)
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:267)
    at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:307)
    at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:79)
    at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:221)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:90)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)
    ... 36 more
    Caused by: javax.faces.el.EvaluationException: java.lang.NullPointerException
    at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:130)
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:72)
    ... 44 more
    Caused by: java.lang.NullPointerException
    at pegasusweb.Graphs.childNode_action(Graphs.java:1075)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:585)
    at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:126)
    ... 45 more
    |#]

  • How to delete a node from a node network

    How do I delete a node from a node network?
    <P>
    <OL>
    <LI>Follow the instructions on page 30 of the Calendar Server (CS) 3.x Admin Guide,
    and page 62 of the CS 4.0 Admin Guide "Deleting (excluding) a Node from the
    Network".
    <LI>Shut down the Directory Server.
    <LI>Backup the LDAP directory to an LDIF file.
    <LI>Edit this LDIF file and delete references to the
    6 calendar reserved users for the node to be deleted.
    <LI>Restore the LDAP directory with this changed LDIF file.
    <LI>Run unidbfix -export -n all
    <LI>Edit the resulting remotenodes.ini
    files and delete all
    references to the node to be deleted.
    <LI>Run unidbfix -import -n all
    <LI>Start the Directory Server.
    <LI>Start the Calendar Server.
    <P>
    Note: This next step is for Calendar Server 3.x * ONLY *
    <P>
    <LI>Run unireqdump -delete
    to delete all requests to the node
    to be deleted.
    </OL>

    Divya wrote:
    Hi,
    I'm using forms6i.
    I want to delete unselected nodes from a tree
    How can it be done??
    ThanksIf you mean empty branches as unselected nodes,
    set Allow Empty Branches property to 'No' in the Trees property.

  • How to get Text for nodes in Tree Structure

    Hi Friends,
    How to get Text for nodes in Tree Structure
    REPORT  YFIIN_REP_TREE_STRUCTURE  no standard page heading.
                       I N I T I A L I Z A T I O N
    INITIALIZATION.
    AUTHORITY-CHECK OBJECT 'ZPRCHK_NEW' :
                      ID 'YFIINICD' FIELD SY-TCODE.
      IF SY-SUBRC NE 0.
        MESSAGE I000(yFI02) with SY-TCODE .
        LEAVE PROGRAM.
      ENDIF.
    class screen_init definition create private.
    Public section
      public section.
        class-methods init_screen.
        methods constructor.
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      private section.
        data: container1 type ref to cl_gui_custom_container,
              container2 type ref to cl_gui_custom_container,
              tree type ref to cl_gui_simple_tree.
        methods: fill_tree.
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    class screen_handler definition.
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      public section.
        methods: constructor importing container
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                   of cl_gui_simple_tree
                   importing node_key .
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      private section.
    endclass.
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    class screen_init implementation.
    *&                        Method INIT_SCREEN
      method init_screen.
        data screen type ref to screen_init.
        create object screen.
      endmethod.
    *&                        Method CONSTRUCTOR
      method constructor.
        data: events type cntl_simple_events,
              event like line of events,
              event_handler type ref to screen_handler.
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             exporting events = events.
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      endmethod.
    *&                        Method FILL_TREE
      method fill_tree.
        data: node_table type table of abdemonode,
              node type abdemonode.
    types:    begin of tree_node,
              folder(50) type c,
              tcode(60) type c,
              tcode1(60) type c,
              tcode2(60) type c,
              text(60) type c,
              text1(60) type c,
              text2(60) type c,
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      data:  wa_tree_node type tree_node,
                t_tree_node type table of tree_node.
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    wa_tree_node-tcode  = text-002.
    wa_tree_node-text =  'Creditors ageing'.
    wa_tree_node-tcode1 = text-003.
    wa_tree_node-text1 =  'GR/IR aging'.
    wa_tree_node-tcode2 = text-004.
    wa_tree_node-text2 =  'Bank Balance'.
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    wa_tree_node-tcode  = text-006.
    wa_tree_node-text =  'Creditors ageing'.
    wa_tree_node-tcode1 = text-007.
    wa_tree_node-text1 =  'Creditors ageing'.
    wa_tree_node-tcode2 = text-008.
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    wa_tree_node-tcode  = text-010.
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    wa_tree_node-tcode1 = text-011.
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    wa_tree_node-tcode2 = text-012.
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    node-hidden = ' '.                 " All nodes are visible,
        node-disabled = ' '.               " selectable,
        node-isfolder = 'X'.                                    " a folder,
        node-expander = ' '.               " have no '+' sign forexpansion.
        loop at t_tree_node into wa_tree_node.
          at new folder.
            node-isfolder = 'X'.                      " a folder,
            node-node_key = wa_tree_node-folder.
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            clear node-relatship.
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            node-n_image =   ' '.
            node-exp_image = ' '.
            append node to node_table.
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            node-isfolder = ' '.                          " a folder,
            node-n_image =   '@CS@'.       "AV is the internal code
            node-exp_image = '@CS@'.       "for an airplane icon
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            node-relatship = cl_gui_simple_tree=>relat_last_child.
          endat.
          append node to node_table.
        at new tcode1 .
            node-isfolder = ' '.                          " a folder,
            node-n_image =   '@CS@'.       "AV is the internal code
            node-exp_image = '@CS@'.       "for an airplane icon
            node-node_key = wa_tree_node-tcode1.
                     node-relatkey = wa_tree_node-folder.
            node-relatship = cl_gui_simple_tree=>relat_last_child.
              node-text = wa_tree_node-text1.
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          append node to node_table.
           at new tcode2 .
            node-isfolder = ' '.                          " a folder,
            node-n_image =   '@CS@'.       "AV is the internal code
            node-exp_image = '@CS@'.       "for an airplane icon
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    class screen_handler implementation.
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      method constructor.
       create object: HTML_VIEWER exporting PARENT = CONTAINER,
                      LIST_VIEWER exporting I_PARENT = CONTAINER.
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    submit YFIIN_REP_BANKBALANCE  via selection-screen and return.
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    submit YFIIN_REP_VENDORCUST_DETAIL via selection-screen and return.
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    submit YFIIN_REP_USERAUTHRIZATION via selection-screen and return.
    endcase.
      endmethod.
    endclass.
    Program execution ************************************************
    load-of-program.
      call screen 9001.
    at selection-screen.
    Dialog Modules PBO
    *&      Module  STATUS_9001  OUTPUT
          text
    module status_9001 output.
      set pf-status 'SCREEN_9001'.
      set titlebar 'TIT_9001'.
      call method screen_init=>init_screen.
    endmodule.                 " STATUS_9001  OUTPUT
    Dialog Modules PAI
    *&      Module  USER_COMMAND_9001  INPUT
          text
    module user_command_9001 input.
    endmodule.                 " USER_COMMAND_9001  INPUT
    *&      Module  exit_9001  INPUT
          text
    module exit_9001 input.
    case sy-ucomm.
    when 'EXIT'.
      set screen 0.
    endcase.
    endmodule.
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    you can read  the table node_table with nody key value which imports when docubble click the the tree node (Double clifk event).
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