Recursive tree question

Similar Questions

• Drag and drop into the structure of recursive tree using af: tree

  I use version 11.1.1.2.0 jdeveloper.
  
  I have a table of the following structure:
  
  groupVO.

  id   name    parent_id
  1   group1   -1
  2   group2   -1
  3   subgp1    1
  4   subgp2    1
  5   leaf1        3
  6   leaf2        4
  7   leaf3        3

  To implement this as a tree, I created a static vo, RootVO, with a row (root-1).
  This is defined as the parent of groupVO using a link from the view.
  Then, I created a viewlink groupVO to himself.
  Then, I created an af:tree with these your. The tree looks like this:
  

  Root
       ->group1
                    ->subgp1
                                 ->leaf1
                                 ->leaf3
                    ->subgp2
                                 ->leaf2
       ->group2

  Now how can I implement drag and drop in this case?
  What I have to do in drag - move, it's just update the component parent_id enjoy the ID of the node dropsite.
  
  Also, I need to display the details of the node selected in a form. I found that by dragging the child vo does not have the trick here. It shows only the first child node of the table.
  
  Published by: josetuttu on July 17, 2011 23:23

  Hello

  I have a similar case (non recursive tree) described here.

  http://www.gabrielsideras.com/2010/10/23/ADF-drag-and-drop-functionality-in-an-aftree-component/

  To implement the move I use model method instead of a method to support bean.

  Gabriel.

• Help with the drawing of a recursive tree

  Hello
  I tried to draw a kind of recursive tree similar to this , but I got stuck. I can not write the actual recursion and I ask for some help how to.
  

  import java.awt.*;
  import javax.swing.*;
  
  public class Tree extends JPanel{
  
       static void drawTree(Graphics2D g, int n, int x, int y,
                                        int x1, int y1, int x2, int  y2, int x3, int y3){
            
            if(n==0){
                 return;
            }
            else{
                 g.setColor(Color.BLUE);
                 g.translate(x, y);     // Moves to center of the screen
                 g.rotate(180*Math.PI/180);
                 g.drawLine(0, 0, x1, y1);
                 g.drawLine(0, 0, x2, y2);     // Draws main three lines
                 g.drawLine(0, 0, x3, y3);
                 g.rotate(-180*Math.PI/180);     // Still at the center
                 
                 g.translate(-x1, -y1);     // Moves to the top of the left line
                 g.rotate(150*Math.PI/180);
                 g.drawLine(0, 0, x1/2, y1/2);
                 g.drawLine(0, 0, x2/2, y2/2);     // Draws first combination
                 g.drawLine(0, 0, x3/2, y3/2);
                 g.rotate(-150*Math.PI/180);
                 g.translate(x1, y1);     // Moves back to center
                 
                 g.translate(-x2, -y2);     // Moves to the top of the middle line
                 g.rotate(180*Math.PI/180);
                 g.drawLine(0, 0, x1/3, y1/3);
                 g.drawLine(0, 0, x2/3, y2/3);     // Draws second combination
                 g.drawLine(0, 0, x3/3, y3/3);
                 g.rotate(-180*Math.PI/180);
                 g.translate(x2, y2);     // Moves back to center
                 
                 g.translate(-x3, -y3);     // Moves to the top of the right line
                 g.rotate(210*Math.PI/180);
                 g.drawLine(0, 0, x1/2, y1/2);
                 g.drawLine(0, 0, x2/2, y2/2);     // Draws third combination
                 g.drawLine(0, 0, x3/2, y3/2);
                 g.rotate(-210*Math.PI/180);
                 g.translate(x3, y3);     // Moves back to center
                 
                 g.setColor(Color.RED);
                 g.drawLine(0, 0, 50, 0);
                 g.drawLine(0, 0, 0, 50); // Draws coordinate system just for my reference
                 g.drawLine(0, 0, -50, 0);
                 
            }
            
       }
       
       protected void paintComponent(Graphics g){
            super.paintComponent(g);
            
            drawTree((Graphics2D)g, 5, getWidth()/2, getHeight()/2, 40, 20, 10, 15, -40, 20 );
            
       }
       
       
       public static void main(String[] args) {
            
            Tree panel = new Tree();
            JFrame app = new JFrame("Tree");
            
            app.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            app.add(panel);
            app.setSize(500, 500);
            app.setVisible(true);
       }
  
  }

  For now, I'm worried about the stem. Just the branches.
  
  Any help/advice is greatly appreciated.
  
  Published by: Luke on May 1st, 2011 17:04

  Luke wrote:
  The left branches seem to decrease length very well when I go deep.

  But there are two problems that I don't know how fix - length of branches straight is too much decreasing and they are misplaced. The other thing is that when I

  maximize/minimize the window containing the graph the image becomes smaller and smaller until it becomes a small point.

  You are far too complicated. But the static variable can actually help you visualize how the tree is painted. run the program below to see.

  I set a goal:
  -Each recursive call must paint a line 10 pixels of length less than the forward direction. Specifically in the program below should be the length
  line 1: 100px
  line 2, 5: 90px
  line 3, 4, 6, 7: 80px
  -You can use n, x and y to the length calculated
  -You can add additional parameters to the draw method
  -You are not allowed to use instance variables (you can leave the variable count for debugging)
  -You are not allowed to use the static keyword anywhere
  -You have to give the result of each calculation a descriptive name

  // For example not:
  draw((Graphics2D) g, 3, getWidth() / 2, getHeight() / 2);
  // but
  int depth = 3;
  int centerHorizontally = getWidth() / 2;
  int centerVertically = getHeight() / 2;
  draw((Graphics2D) g, depth, centerHorizontally, centerVertically);
  

  import java.awt.*;
  import javax.swing.*;
  
  public class Tree extends JPanel {
  
      private int count;
  
      private void draw(Graphics2D g, int n, int x, int y) {
          if (n == 0) {
              return;
          }
          else {
              int angle = 35;
              int length = 50;
              count++;
  
              g.drawLine(x, y, x, y - length); // trunk
              g.setColor(Color.RED);
              g.drawString(String.valueOf(count), x + 2, y - (length / 2));
              g.setColor(Color.BLACK);
  
              g.rotate(Math.toRadians(-angle), x, y - length); // left
                                                                       // branch
              draw(g, n - 1, x, y - length);
              g.rotate(Math.toRadians(angle), x, y - length);
  
              g.rotate(Math.toRadians(angle), x, y - length); // right
                                                                      // branch
              draw(g, n - 1, x, y - length);
              g.rotate(Math.toRadians(-angle), x, y - length);
  
          }
      }
  
      @Override
      protected void paintComponent(Graphics g) {
          super.paintComponent(g);
          count = 0;
  
          Graphics2D gg = (Graphics2D) g;
          gg.setFont(gg.getFont().deriveFont(Font.BOLD, 16f));
          gg.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                  RenderingHints.VALUE_ANTIALIAS_ON);
          draw(gg, 3, getWidth() / 2, getHeight() / 2);
      }
  
      public static void main(String[] args) {
          EventQueue.invokeLater(new Runnable() {
              public void run() {
                  Tree tree = new Tree();
                  tree.setPreferredSize(new Dimension(500, 500));
  
                  JFrame frame = new JFrame("Test");
                  frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
                  frame.getContentPane().add(tree);
                  frame.pack();
                  frame.setLocationRelativeTo(null);
                  frame.setVisible(true);
              }
          });
      }
  }
  

  Published by: Walter Laan 11 May 2011 21:58 (a little more readable numbers :))

• How can I find levels of knot / depth of recursive tree table?

  Guys,
  
  With the help of Studio Edition Version 11.1.1.3.0.
  
  After 2-3 days of banging my head against the screen, I'm ready to ask for help. I confess: I'm a noob and can't find a way to get the node level / depth of a treeTable. I've not seen mentioned in the forums or in one of the examples of treeTable on different blogs. Google, the praise of God, I was missed as well.
  
  I tried in my Parent-> children-> tree table Recursive Child (the child of references view object):
  
  (1) EL expressions (my EL sucks) in a text output in the node. Hoping that something like #{node. HierTypeBinding.Parent.etc.}, would produce a kind of valuable info I could handle.
  (2) setting the value of a managed bean node, but do not know how to get the currently rendered node. I can only figure out how to get the node currently selected, which is only useful after the table has already been made.
  (3) level creating a transitional field called in the child view object and setting its equal to level sound + 1 ViewRowImpl, but if the child has many parents, I get incorrect calculations. I have the most away with this, but finally gave up. To access the feature through ViewLinks works great to browse children lines, but by train to get parent node is disconcerting if you have several parents.
  (4) the two saying "Please!" and various metaphors of four colorful letters. Not had much effect.
  
  Any kind of branch or help would be great.
  
  Thanks guys,.
  Will be

  Based on the Employees table in the HR schema, a link is defined between the employee-id and the id manager.
  When an instance of the view that above is used as table (recursive) tree, I am able to find the depth of the node.

  Example code:
  JSPX code fragment:

  
  selectionListener = "#{bindings." Employees.treeModel.makeCurrent}.
  rowSelection = "single" id = "tt1".
  styleClass = "AFStretchWidth" >
  
  
  
  *
  ID = "ot3" / >
  
  
  
  
  
  

  PageDef:
  
  
  
  
  
  
  
  
  
  
  
  

  Can you have the same card in your scenario and see if you can get the depth of a node?

  Thank you
  Nini

• Spanning tree question

  I have a stack of 4 switches PowerConnect 7048 core. There are unacceptable delays on the network so I'm cleaning configurations and verification spanning tree as these have been set up by he previous admin. The four active links of 10 GB, the spanning tree different reports States:

  two are

  Te3/2/1 port active
  Status: Disabled role: disabled
  Identification of the port: 128.167 shipping: 0
  Fast port: no Protection from root: No.
  Designated the bridge priority: 4096 address: 5C26.0AAA.1EA6
  Identification of the designated port: 0.0 cost of access road designated: 0
  Root regional CSE: 80:00:5 C: 26:0 A: AA:1E:A6 CST Port cost: 0
  Root Guard..................................... FAKE
  Loop Guard..................................... FAKE
  TCN Guard...................................... FAKE
  Portfast auto... TRUE

  and two are

  Te2/2/2 port enabled
  State: Forwarding role: designated
  Identification of the port: 128.112 shipping: 2000
  Fast port: no Protection from root: No.
  Designated the bridge priority: 4096 address: 5C26.0AAA.1EA6
  Identification of the designated port: 128.112 cost of access road designated: 0
  Root regional CSE: 10:00:5: 26:0 A: AA:1E:A6 CST Port cost: 0
  Root Guard..................................... FAKE
  Loop Guard..................................... FAKE
  TCN Guard...................................... FAKE
  Portfast auto... TRUE

  . I think the first one indicates a problem and all must be reported as the redirection and designated. Is that correct and if so, how can this be done?

  Thank you

  Hello

  Does not serve a disabled state. If you do not disable spanning tree, it should allow. http://downloads.Dell.com/manuals/all-products/esuprt_ser_stor_net/esuprt_networking/esuprt_net_fxd_prt_swtchs/PowerConnect-7024_Reference%20Guide_en-us.PDF page 745

• The tree question

  Request Express 4.1.0.00.32
  
  I created a tree using the following query:
  
  Select case when connect_by_isleaf = 1 then 0
  When level = 1 then 1
  of another-1
  end the status,
  level,
  MAJR_DESC as title,
  NULL as an icon,
  MAJR_CODE as value,
  majr_desc as ToolTip,
  ' f ? p = & APP_ID.:2: & SESSION. : NO::P2_MAJOR:' | MAJR_CODE link
  of ' #OWNER # '. " WLMAJORS ".
  Start with 'COLL_CODE' is null
  connect prior 'MAJR_CODE' = 'PARENT '.
  siblings arrested by "MAJR_DESC".
  
  The tree seems to work fine, but I have a little problem. The tree lists the six colleges at my University. When you click on a college to decompress, it shows the different "majors" of the order. By clicking on any of these majors then load of information that major in various parts on the same page that contains the tree. In the tree, Arts & Communication is the first college. If I develop a college, say Liberal Arts and choose a major, say that English journal, Arts and Communication develops as well. The first sheet (Arts & Communication) grows every time that the page is. I don't want to do. The single sheet should be extended is the College that contains the key that I consult.
  
  None of this has meaning to anyone else than me? Any help is greatly appreciated.
  
  Bob

  Hello Bob,

  Give a few static id for the region of the tree, for example tree-reg-static-id (make sure model respective has the substitution for #REGION_STATIC_ID string #)

  And after the code to run when the page load section of your page @ apex.oracle.com

  if ($("#P1_MAJOR").val())
  {
  var firstNodeChild = $("#tree-reg-static-id li:first").find("li#"+$("#P1_MAJOR").val()).size();
  if( firstNodeChild == 0 )
  $("#tree-reg-static-id li:first").removeClass("open").addClass("closed");
  }
  else
  $("#tree-reg-static-id li:first").removeClass("open").addClass("closed");
  

  That should do the trick.

  However, I consider this a BUG!

  Kind regards
  Hari

• Properties-> Flex tree question Applications

  Right-click on the properties of a project, go to flex applications.

  FX3, only branches shown for my project are the ones with the real application (mxml) files

  In Fb4, it shows all my directories in my project and my applications are in the last subdirectory. But because I have 10 other subdirectories and probably more then 10 directories etc, the tree made my scroll bar about 1 1/5. ((1) there is no collapse all close this tree nasty 2) why it collapsed so all branches are closed, but only branches that appear are those with the mxml files does not start? It's super annoying to scroll down, see what application is selected, scroll to the add, then scroll down to select that I have added, and then scroll to the top to set the default value.

  Just start this view with the tree collapsed or expose branches that contain only mxml files.

  This forum is for the SDK. Issues specific to the IDE interface belong to its dedicated forum.

• Property selectedItem tree question

  Hi all

  After setting the dataprovider for the tree, I browsed the dataprovider of the tree and selected a particular tree by using the tree.selectedItem property node. But a problem of stack trace mentioned below during the launch of the tree and execution.

  

  You might want to try a later version of 3.x.  Otherwise, you will need to

  debugging in and see what assumptions does the code.

• UpdateDisplayList tree question

  Hi, I am facing after publication.
  
  I use a tree related to an xmllistcollection. I apply a filter funtion to this collection, but the elements are just updated to the tree by expanding or collapsing branches.
  
  I already tried to use invalidateDisplayList... or validateDisplayList... but it was unsuccsessful.
  
  Does anyone have an idea?
  
  Thank you
  Peter

  treeListagem.invalidateList ();

  Does the work!

• Recursion in the page tree

  JHOVE PDF module, I wrote, sometimes pointed out that the documents are invalid because they self-recursive trees of page, although other applications can open these documents. In reviewing one of these documents more closely, I found that the top level of the page tree node contains a reference to itself (that is, the object even PDF), which triggered an infinite recursion. Is this considered as legitimate a form of the tree of the page? Are there other apparent cases of self-recursion in the page trees which are actually legitimate?

  The root of the tree of Pages, as well as the "branches" of high level seem to be contained in a stream unique compressed object (ID 36).

  • The root's object ID 222 and it has a range of Kids of [223 R 224 0 0 R 0 R 225].
  • Object 223 has three children (229, 1 and 6) and a relative of 222.
  • Object 224 has two children (11 and 15) and a relative of 222.
  • 225 object has a child (19) and a relative of 222.

  Looking at 223 children, they all have a relative of 223. Children of all 224 repoint to 224 and 225 points correctly to her kid.

  So if you see recursion in this file - I don't know where...

• Form inputText select in the tree in the pop-up dialog box

  I have two entity objects. Recursive tree structure, the other has a foreign key to the first.

  The form of the second entity ADF, I need to make the user choose attribute for foreign key in a tree, so I've created a popup, a dialogue and a tree in it. Then we add a showPopupBehavior foreign key of the second entity object attribute inputText.

  Using a bean to backup, when you click on the button "OK" in the dialog box, I manage defining the foreign key of the selection attribute. I have the following code:

      public void KonuKoduPopup_DialogListener(DialogEvent dialogEvent) {
          if (dialogEvent.getOutcome().name().equals("ok")) {
              Row konuKoduRow = (Row)ADFUtils.evaluateEL("#{bindings.KonuKoduView1.currentRow}");
              Object konuKoduRowId = konuKoduRow.getAttribute("Id");
              
              AttributeBinding konuKoduId = ADFUtils.findControlBinding("KonuKoduId");
              konuKoduId.setInputValue(konuKoduRowId);
              
          }
      }
  

  Although it does not give exception, it does not work. I don't see the value of the inputText. What can be the problem?

  Hello

  do you have PPR the text input field to display the changed value?

  Frank

• Node of the tree in default expansion

  Hello
  I have an element in the tree, the first node which remains extended, I can not find the reason for this behavior, can someone tell me how to stop growing.
  Thank you
  
  Published by: aparm on May 9, 2013 04:21

  I think that I had the same problem you describe. Look at this thread:

  The tree question

  Bob

• AF:tree does not display a hierarchy in the data

  Hi all
  
  I'm using Oracle Jdeveloper 11 g R2.
  
  I created a display object based on a SQL query access in pipeline service packaged as shown below:

  SELECT * FROM TABLE(app_menu_mgmt_pack.tNavigationalMenus(:paraBindUserIdentifier, :paraBindMenuIdentifier))

  This query returns menu_id, menu_label, menu_base_id menu_id corresponding to the attribute relative to menu_base_id.
  I then created a viewlink that retrieves recursive data, based on menu_id (source) and menu_base_id (target).
  
  I have created af:tree in a page based on the view object and added rules for free recursion. When I run the page, it does not display the data in hierarchies.
  
  I use the functions of pipeline in view, not possible complete recursive tree (af:tree) as a data pipeline and not returned at the same time? Or I have to use other properties to achieve this.
  
  Any help will be much appreciated.
  Thanks in advance.
  
  Concerning
  Bilal

  Usually the component table tree will not use instances of detail added to the data model of the module application uses rather accessor based rowsets view link to show their children. So when you use static linking variables then it will automatically bind variables, but when you set a bind variable dynamically accessor focused view link on the sets of lines not have the bind variable will define which thus will display the data of the child. So try setting the binding settings of the accessor of link to display for the parent of the current address line row.

  Thank you
  TK

• Edit Tree Control Question, specific cells

  Hello

  I have a question on the modification of tree controls.

  I have played around with the properties and to date have not thought to it. That's what I'm doing:

  I have a tree with multi-column control.

  The columns are essentially: name, Description, value 1 and value 2

  I want to do is be able to select the value 1 and value 2 and change them individually on each line.

  I want to be able to change the name and Description.

  What I was able to do so far is the editable table and every time I get the string in the active cell regardless of the cell that I click in returns always the value of the first column.

  I had this problem by making my changes of value by calling a pop-up box and change the values, but I would rather simplify it by editing the tree.

  I can't give my real code, but if it helps I can make an example facsimile...

  Here's a suggestion:

  -tour of the edition on the tree cell

  -When the clicks double user on a cell, if the column index is 2 or 3 then set the position of the appropriate cell editing

  see this: (in this example, I'm not filtering the column index, but I'm sure that you'll be able to add this feature)

  

• Tree of the University campus solutions 9.0 organization and Lookup Table question

  People,

  Hello. I'm creating 9.0 Solution Campus of a college. I confront the issue as below:

  Implement AWAR > Foundation Table > academic Structure > academic organization

  I implemented the academic organization of these data Table: in addition to academic departments, I also type in academic institutions and academic groups.

  Then I create academic organization tree using the tree Manager. The tree is verified and valid a date of entry into force.

  Then I put in place the 2 tables below:

  Implemented AWAR > Foundation Table > academic Structure > program academic table

  Implemented AWAR > Foundation Table > academic Structure > Table of different disciplines

  Table of research of the academic organization developed in the 2 above table successfully. But when I put in place the other 2 tables below, search for academic organisation table does:

  Implement > AWAR > Security > secure Administration of the student > user ID > Security academic organization

  Curriculum management > Catalogue > Catalogue courses > tab offer

  I understand that the 2 tables above are based on the tree of academic organizations and not on the academic organization Table. I see no error in the tree.

  Because the search for academic organisation table can't happen in the tab 'Offers' course catalogue, the course cannot be saved.

  My question is:

  Any folk can help resolve the issue of the "academic organization lookup table cannot mount security academic organization and in the tab catalog of courses'? Or any suggestion on the tree of the academic organizations?

  Thanks in advance.

  Perform the following procedure:

  Home > ACSS configuration > Security > secure Administration student > process > security update - Acad Orgs

  After the execution of the process, check the lookup tables.