Grouping tree nodes

Hi,
Here is a tricky one that I have got. Not sure if I am being over creative here or asking too much from apex!!
Let say I have a contracts table which stores parent child relationship between various contracts. the structure is
contract_id, contract_number, contract_type,parent_id
I can create a simple tree which displays as below.
Parent1
child1
child2
child3
Now how can i display a tree which groups all the child contracts by their type and adds an extra type node between parent and child. something like this.
Parent1
Type1
child1
child2
Type2
Child3
Any help is highly appreciated.
Many Thanks,
Bhavesh

Hi Bhavesh,
Have a look at: Re: Tree Help
Basically, you need to create some sql that will provide you with id and parent_id values only for each record. In your case, this would mean that you would have to use the UNION ALL functionality to scan your table twice. The first time to get the child/parent data (child/type in your example) and the second time to get the parent/grandparent data (type/parent in your example).
The issue would be ensuring that you can maintain a relationship throughout the structure. In the above example, IDs are all numbers and some have been "bumped up" by adding a large number to the actual value - this needs to be done wherever that ID is needed on both run throughs and to ensure that an ID in the output is unique.
Andy

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JDeveloper 11.1.2.2.0 -- WinXP
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<af:outputText value="#{node.name} :: Total: #{node.Uses}" id="ot3" rendered="#{node.name != null}"/>
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Eliminating Group Tree Level in VS2010

I need to have a variable number of levels in the group tree in VS2010, a technique I have used in CR for VS2005. I also saw this resolved for someone using VS2008 on thread 1493907 using the same method that I used in 2005. If, at the most detailed level, I group on a formula that I set to return a zero length string, that level still shows up in the tree and causes an error if the user tries to drill down that far.
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Group 1 formula
select {?level}
case 1 : {XXX.AGENCY_CD}
case 2 : {XXX.REGION_CD}
case 3 : {XXX.ORG_CD}
default: ""
Group 2 formula
select {?level}
case 1 : {XXX.REGION_CD}
case 2 : {XXX.ORG_CD}
default: ""
Group 3 formula
select {?level}
case 1 : {XXX.ORG_CD}
default: ""
Summary
If reporting from Level 1, then all levels of the tree are necessary. If reporting at level 4, I hide the group tree, since it is not necessary. If I want to report from level 3 (or 2), 2 (or 1) levels of grouping should be eliminated, but they are not.

Don
I set the grouping level to 3 (out of 1,2,3,4). If the level is 4, the tree makes no sense, so I hide it.
If I run the program from the IDE:
When I try to drill down in the GroupTree to the level that should not exist, Visual Studio breaks n allInOne.js with the error "Microsoft JScript runtime error: 'txtTooltipLyr' is null or not an object".
If I view it in the Main Report Preview in the IDE:
The 2 levels of nodes that should be eliminated are visible, but they do not do anything. The have no text and expanding the lowest level of the tree does nothing.
If I deploy the web page and run it without using the IDE:
The 2 levels of nodes that should be eliminated are visible, but they do not do anything. The have no text and expanding the lowest level of the tree does nothing, except that on the browser status bar there is an 'Error on page.' message.
I have never exported to RPT format. I just tried it and I had to open it with visual studio. It acts just like Main Report Preview described above.
DebugDiag does not show anything, I am guessing because the IDE is catching the error and nothing is really crashing.
Chip
Edited by: sandcrab72 on Feb 22, 2011 9:27 PM

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Moved from .NET Development - Crystal Reports forum to Crystal Reports Design forum.
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please urgent

hi
try something like this.
DECLARE
htree ITEM;
num_selected NUMBER;
BEGin
-- Find the tree itself.
htree := Find_Item('tree_block.htree3');
-- Find the number of nodes marked as selected.
num_selected := Ftree.Get_tree_Property(htree, Ftree.SELECTION_COUNT);
-- Loop through nodes and delete them. Since nodes are internally
-- re-numbered when one is deleted, be sure to loop in reverse
-- order from last to first.
FOR j in num_selected..1 LOOP
Ftree.delete_tree_node(htree, Ftree.Get_tree_Selection(htree, j));
END LOOP;
END;If its Correct/helpful please mark it thanks.
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Tree Node

Hi,
I want to know how to add a tree node that look like this
Hello David
|
|_A
|_B
|_c
|
Hello Allan
|_D
|_E
|_F
From this Code it will create a tree structure
Hello David
|
Hello Allan
DECLARE
htree ITEM;
top_node FTREE.NODE;
new_node FTREE.NODE;
new_node2 FTREE.NODE;
item_value VARCHAR2(20);
rg_data RECORDGROUP;
v_ignore NUMBER;
BEGIN
htree := Find_Item('tree_block.david_tree');
item_value := 'Hello David';
new_node := Ftree.Add_Tree_Node(htree,
Ftree.ROOT_NODE,
Ftree.PARENT_OFFSET,
Ftree.LAST_CHILD,
Ftree.EXPANDED_NODE,
item_value,
NULL,
item_value);
item_value := 'Hello Allan';
new_node := Ftree.Add_Tree_Node(htree,
Ftree.ROOT_NODE,
Ftree.PARENT_OFFSET,
Ftree.LAST_CHILD,
Ftree.EXPANDED_NODE,
item_value,
NULL,
item_value);
END;
From this result I don't konw how to add node using record group to create A, B C on Hello David node and D, E, F on Hello Allan node
Hello David
|
|_A
|_B
|_c
|
Hello Allan
|_D
|_E
|_F
I try using this code but didn't work and not sure what syntax it went wrong.
rg_data := FIND_GROUP('RG_BANKNAME');
-- Add the new node at the top level and children.
--v_ignore := POPULATE_GROUP(rg_data);
Ftree.Add_Tree_Data(htree,
Ftree.ROOT_NODE,
Ftree.PARENT_OFFSET,
Ftree.LAST_CHILD,
Ftree.RECORD_GROUP,
rg_data);
The record group object Record Group Query the sql statement look like this :
SELECT NAME, SHORT_NAME FROM C_BANKS
Also you have any example using SIBLING_OFFSET and when to use it?
Thanks
David

The Recordgroup has to have a specific structure, maybe this helps http://andreas.weiden.orcl.over-blog.de/article-29307730.html

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This works for the first node I expand, if I try to expand another node I get frm-47337 Tree node label cannot be null. I'm using the same record group as before so I cant see why I'm getting the error. Thanks for any help.

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Which line you are getting the below?
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bsampeieri,
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Now, if in the previous post you/others answered the question and then the OP posted here later, I could see the complaint.
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VS2010 Eliminate Group Tree Level

I need to have a variable number of levels in the group tree in VS2010, a technique I have used in CR for VS2005. I also saw this resolved for someone using VS2008 on thread 8244145 using the same method that I used in 2005. If, at the most detailed level, I group on a formula that I have return a zero length string, that level still shows up in the tree and crashes the program if the user tries to drill down that far.
Group 1 formula
select {?level}
    case 1 : {XXX.AGENCY_CD}
    case 2 : {XXX.REGION_CD}
    case 3 : {XXX.ORG_CD}
default: ""
Group 2 formula
select {?level}
    case 1 : {XXX.REGION_CD}
    case 2 : {XXX.ORG_CD}
default: ""
Group 3 formula
select {?level}
    case 1 : {XXX.ORG_CD}
    default: ""
Edited by: sandcrab72 on Jan 31, 2011 6:35 PM

Don
I set the grouping level to 3 (out of 1,2,3,4). If the level is 4, the tree makes no sense, so I hide it.
If I run the program from the IDE:
When I try to drill down in the GroupTree to the level that should not exist, Visual Studio breaks n allInOne.js with the error "Microsoft JScript runtime error: 'txtTooltipLyr' is null or not an object".
If I view it in the Main Report Preview in the IDE:
The 2 levels of nodes that should be eliminated are visible, but they do not do anything. The have no text and expanding the lowest level of the tree does nothing.
If I deploy the web page and run it without using the IDE:
The 2 levels of nodes that should be eliminated are visible, but they do not do anything. The have no text and expanding the lowest level of the tree does nothing, except that on the browser status bar there is an 'Error on page.' message.
I have never exported to RPT format. I just tried it and I had to open it with visual studio. It acts just like Main Report Preview described above.
DebugDiag does not show anything, I am guessing because the IDE is catching the error and nothing is really crashing.
Chip
Edited by: sandcrab72 on Feb 22, 2011 9:27 PM

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However, I am faced with a problem. Border cannot detect this and I dont want to use a mouse motion listener (with a large number of nodes, I fear it will be inefficient, calculating every node's position constantly).
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import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Insets;
import java.util.EventObject;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.JFrame;
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import javax.swing.JScrollPane;
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import javax.swing.tree.DefaultMutableTreeNode;
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}

the node on the tree is only painted on using the
renderer to do the painting work. A mouse listener
has to be added to the tree, and when moved over an
area, you have to determine if you are over the
border and which direction to update the cursor and
to know which way to resize when dragged. One of the
BasicRootPaneUI has some code that can help determine
that.Thanks for replying. What is your opinion on this alternative idea that I just had?
I am wondering if it might be easier to have a toggle button in the node that you click when you want to resize the node. Then a mouse-down and dragging the mouse will resize the node. Mouse-up will reset the toggle button, and so will mouse down in an invalid area.
Anil

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