Editable Recursive Tree

hi evreyone
I need to create an editable tree based on (one table called Locations)
this is the structure of this table
LocationNo
LocationName
ParentLocationNo
LocationNo and ParentLocationNo are Forign keys
according to what I've red I should use a recursive tree (Self-Reference forign key)
using a view that represent the tree (nodes & branches)
how can I create this tree (with Details Steps) ?
I am using
Jdeveloper 11.1.1.2.0
JHeadstart 11.1.1.2.29
thanks

hi
According to chapter 5 "Creating Tree Layouts", 5.7.4 "Variation: Recursive Tree"
I've created a Recursive Tree based on table call (Location)
but the problem is how can I refresh the data ... I mean .. How can I See the new record that I've
created in the same tree without moving in it (to make a refresh)
thanks

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Synchronize recursive tree with edit form

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I am trying to synchronize recursive tree with form, i have followed this post exactly Oracle ADF Developer: ADF - Synchronizing form with recursive tree
the first level of the tree works but the inner levels does not.
I am using JDEV 11.1.2.3

Try sample 83 here -
http://www.oracle.com/technetwork/developer-tools/adf/learnmore/index-101235.html#CodeCornerSamples

Recursive Tree using Web Dynpro java

Hi
I've been trying to create a recursive tree using java in Web Dynpro.
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Hi,
Check the below links....
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webdynpro/wd%20java/wd%20tutorials/integration%20of%20a%20tree%20structure%20in%20a%20web%20dynpro%20table.pdf
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webdynpro/wd%20java/wd%20tutorials/constructing%20a%20recursive%20and%20loadable%20web%20dynpro%20tree.pdf
http://help.sap.com/saphelp_nw70/helpdata/en/13/4cde139306304480e89d815ffcf891/frameset.htm
http://help.sap.com/saphelp_nw70/helpdata/en/af/44ea406c9d3d43e10000000a155106/frameset.htm
http://help.sap.com/saphelp_nw70/helpdata/en/21/ad884118aa1709e10000000a155106/frameset.htm
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Menu option under recursive tree item/folder & checkbox in tree

Hi,
I want to present a checkbox next to an item or folder in a recursive tree.
I didn't see any option to do it so I tried to add a menu and a menu option type checkbox under the node item and note type.
The issue it does nothing.
Any ideas?
THanks,
Itay

Hi Akshay,
Everything mentioned here step by step:
0. You cannot use check-boxes inside tree, so you have to emulate them with images (or use Table with Tree-like master column -- not discussed in this message)
1. Create boolean attribute isChecked in node
2. Create calculated read-only string attribute cbIcon, write following in generated getter function:
return element.getIsChecked() ?
"~sapicons/b_okay.gif" : "~sapicons/b_canc.gif";
or whatever images you are using.
3. Create & bind action onAction for TreeNode / TreeItem.
-- apply parameters mapping in wdDoModifyView:
if ( firstTime )
final IWDTreeNodeType treeNode = (IWDTreeNodeType)
view.getElement("<your-tree-node-element-id>");
treeNode.mappingOfOnAction()
.addSourceMapping("path", "selectedElement");
Your action must define parameter with type of your node element and name selectedElement
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Editable ALV Tree

Hello All,
I am trying to make an Editable ALV tree ..but cannot find the
I have used fieldcat -edit = X but it only works for GRID ALV and not TREE ALV ...
Please help me on this .....
Edited by: Karan Chopra on Aug 2, 2010 1:11 PM

Hi Karan
CL_GUI_ALV_TREE is only a display tool.
It has not a feature for editable data unfortunately.
I was used a popup input screen on cell "double click" event to change the data in a cell
in one of my projects.
Maybe it can be a solution for u .

Selection of elements in a recursive tree structure

Hello,
I have a recursive tree structure, and I am dynamically creating the child nodes as the parent nodes get expanded. The structure at runtime after expansion of the nodes would look something like this:
Node 1
---Node 1.1
Leaf 1.1.1
Leaf 1.1.2
Leaf 1.1.3
---Node 1.2
Leaf 1.2.1
Leaf 1.2.2
Node 2
---Node 2.1
Leaf 2.1.1
---Node 2.2
Leaf 2.2.1
Leaf 2.2.2
When I select an item, say Leaf 1.1.1, that item gets highlighted. Now, when I select another node, say Node 2.1, that item gets highlighted as well. The issue now is that both Leaf 1.1.1 and Node 2.1 are highlighted, although I want only the latest selection to be highlighted.
I have the following settings on my context node of the tree:
Initialization Lead Selection = False
Singleton = False
Selection = 0..1
How can I get only the latest selection to be highlighted on the tree?

Hi Venkatramanan,
You are right - the lead selection works perfectly, and it is just an issue with the appearance. But even so, I would like to know if there is some way to control the visual highlighting of the nodes. The main cause of concern is that for a user, if he selects leaf 1 first, and then leaf 2 (from another node) next, both are highlighted, and there is no way to know which one is really selected.
I did look at the component WDR_TEST_EVENTS. The dyn-load recursive tree does not appear to have this problem, but I could not find any special handling in the code.
One more thing: I have the ignoreAction attribute set to true for all the parent nodes. The leaves have this attribute set to false, so they can be selected. But this does not seem to help with the highlighting issue.
Thanks,
Kamal

Recursive tree issue

Hello!
I have made a view object with self referencing view link, dropped the data control onto page, added a rule, chosen attributes.
It works fine, but the tree initially displays all the table rows, since the tree uses a single view object and query is not limiting the data because if i limit it for selecting only root records, the children won't be seen, of course. How to construct a recursive tree, so that it would initially have only root records on top?
Thank you!

This is in 11.1.1.4 btw.
Here's the stack trace if it helps:
java.lang.IllegalStateException: ADF_FACES-60025:Error trying to change index from: 0 to: 1 rowCount: 2.
     at oracle.adfinternal.view.faces.model.FlattenedTreeCollectionModel.setRowIndex(FlattenedTreeCollectionModel.java:171)
     at oracle.adfinternal.view.faces.renderkit.rich.TreeRendererUtils$1.setRowIndex(TreeRendererUtils.java:568)
     at oracle.adfinternal.view.faces.renderkit.rich.TableRenderer.renderDataBlockRows(TableRenderer.java:1860)
     at oracle.adfinternal.view.faces.renderkit.rich.TableRenderer.encodeAll(TableRenderer.java:613)
     at oracle.adfinternal.view.faces.renderkit.rich.TreeTableRenderer.encodeAll(TreeTableRenderer.java:600)
Caused by: java.lang.IllegalStateException: ADFv: Not inside a container.
     at oracle.adfinternal.view.faces.model.binding.FacesCtrlHierBinding$FacesModel.exitContainer(FacesCtrlHierBinding.java:673)
     at oracle.adfinternal.view.faces.model.FlattenedTreeCollectionModel._scrollForward(FlattenedTreeCollectionModel.java:260)
     at oracle.adfinternal.view.faces.model.FlattenedTreeCollectionModel._scrollIndex(FlattenedTreeCollectionModel.java:221)
     at oracle.adfinternal.view.faces.model.FlattenedTreeCollectionModel._scrollRepeatedly(FlattenedTreeCollectionModel.java:190)
     at oracle.adfinternal.view.faces.model.FlattenedTreeCollectionModel._scrollFromTop(FlattenedTreeCollectionModel.java:183)
     at oracle.adfinternal.view.faces.model.FlattenedTreeCollectionModel.setRowIndex(FlattenedTreeCollectionModel.java:152)
We have a copy of the adf 11.1.1.4 source and I checked FlattenedTreeCollectionModel.setRowIndex(FlattenedTreeCollectionModel.java:171) but it doesn't reveal anything. I see the part that rethrows the IllegalStateException, e.g.:
try
//more code here
catch (IllegalStateException e)
IllegalStateException exp =
new IllegalStateException(LoggerUtils.getMessage(
LOG, LoggerBundle.EXCCHANGE_INDEX, new Object[]{_index,index,_rowCount}));
exp.initCause(e);
throw exp;
But I can't find the part that actually throws the IllegalStateException. I'm looking for an explanation as to why this is happening. I understand the solutions above worked for some people but there never was an explanation about what the error is about (e.g. why did the exception happen). The error message is far too cryptic and does not really establish what could be wrong which is just annoying as hell.

Add/Edit/Delete Tree Nodes using CL_GUI_ALV_TREE

Hi All,
I am looking for an example of program with CL_GUI_ALV_TREE that have a functionality of add a tree node, edit a tree node, and delete a tree node.
I have already looked the BCALV_TREE* demo program but could not able to find a program to add/edit/delete node tree elements.
Any info on this.
Thanks
aRs

Hello aRs
Here is a sample report showing how to delete nodes in an ALV tree. The report was copied from BCALV_TREE_01. Search for added code:
*$ADDED: begin
*$ADDED: end[/code]
When you display the tree expand the first folder completely. When entering 'DELETE' into the command field directly the first flight date node will be deleted.
REPORT ZUS_SDN_BCALV_TREE_01_DELNODE.
based on: REPORT bcalv_tree_01.
Purpose:
~~~~~~~~
This report shows the essential steps to build up a hierarchy
using an ALV Tree Control (class CL_GUI_ALV_TREE).
Note that it is not possible to build up this hierarchy
using a simple ALV Tree Control (class CL_GUI_ALV_TREE_SIMPLE).
To check program behavior
~~~~~~~~~~~~~~~~~~~~~~~~~
Start this report. The hierarchy tree consists of nodes for each
month on top level (this level can not be build by a simple ALV Tree
because there is no field for months in our output table SFLIGHT.
Thus, you can not define this hierarchy by sorting).
Nor initial calculations neither a special layout has been applied
(the lines on the right do not show anything).
Note also that this example does not build up and change the
fieldcatalog of the output table. For this reason, all fields
of the output table are shown in the columns although the fields
CARRID and FLDATE are already placed in the tree on the left.
(Of course, this is not a good style. See BCALV_TREE_02 on how to
hide columns).
Essential steps (Search for '§')
~~~~~~~~~~~~~~~
1.Usual steps when using control technology.
 1a. Define reference variables.
 1b. Create ALV Tree Control and corresponding container.
2.Create Hierarchy-header
3.Create empty Tree Control
4.Create hierarchy (nodes and leaves)
 4a. Select data
 4b. Sort output table according to your conceived hierarchy
 4c. Add data to tree
5.Send data to frontend.
6.Call dispatch to process toolbar functions
*$ADDED: begin
DATA:
gd_del_nkey TYPE lvc_nkey.
*$ADDED: end
§1a. Define reference variables
DATA: g_alv_tree TYPE REF TO cl_gui_alv_tree,
 g_custom_container TYPE REF TO cl_gui_custom_container.
DATA: gt_sflight TYPE sflight OCCURS 0, "Output-Table
 ok_code LIKE sy-ucomm,
 save_ok LIKE sy-ucomm, "OK-Code
 g_max TYPE i VALUE 255.
END-OF-SELECTION.
CALL SCREEN 100.
*& Module PBO OUTPUT
 process before output
MODULE pbo OUTPUT.
SET PF-STATUS 'MAIN100'.
SET TITLEBAR 'MAINTITLE'.
IF g_alv_tree IS INITIAL.
 PERFORM init_tree.
 CALL METHOD cl_gui_cfw=>flush
 EXCEPTIONS
 cntl_system_error = 1
 cntl_error = 2.
 IF sy-subrc NE 0.
 CALL FUNCTION 'POPUP_TO_INFORM'
 EXPORTING
 titel = 'Automation Queue failure'(801)
 txt1 = 'Internal error:'(802)
 txt2 = 'A method in the automation queue'(803)
 txt3 = 'caused a failure.'(804).
 ENDIF.
ENDIF.
ENDMODULE. " PBO OUTPUT
*& Module PAI INPUT
 process after input
MODULE pai INPUT.
save_ok = ok_code.
CLEAR ok_code.
CASE save_ok.
 WHEN 'EXIT' OR 'BACK' OR 'CANC'.
 PERFORM exit_program.
*$ADDED: begin
 WHEN 'DELETE'.
 CALL METHOD g_alv_tree->delete_subtree
 EXPORTING
 i_node_key = gd_del_nkey
 I_UPDATE_PARENTS_EXPANDER = SPACE
 i_update_parents_folder = 'X'
 EXCEPTIONS
 node_key_not_in_model = 1
 OTHERS = 2.
 IF sy-subrc <> 0.
 MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
 WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
 ENDIF.
 CALL METHOD g_alv_tree->frontend_update.
*$ADDED: end
 WHEN OTHERS.
§6. Call dispatch to process toolbar functions
 CALL METHOD cl_gui_cfw=>dispatch.
ENDCASE.
CALL METHOD cl_gui_cfw=>flush.
ENDMODULE. " PAI INPUT
*& Form init_tree
 text
--> p1 text
<-- p2 text
FORM init_tree.
§1b. Create ALV Tree Control and corresponding Container.
create container for alv-tree
DATA: l_tree_container_name(30) TYPE c.
l_tree_container_name = 'CCONTAINER1'.
CREATE OBJECT g_custom_container
 EXPORTING
 container_name = l_tree_container_name
 EXCEPTIONS
 cntl_error = 1
 cntl_system_error = 2
 create_error = 3
 lifetime_error = 4
 lifetime_dynpro_dynpro_link = 5.
IF sy-subrc <> 0.
 MESSAGE x208(00) WITH 'ERROR'(100).
ENDIF.
create tree control
CREATE OBJECT g_alv_tree
 EXPORTING
 parent = g_custom_container
 node_selection_mode = cl_gui_column_tree=>node_sel_mode_single
 item_selection = 'X'
 no_html_header = 'X'
 no_toolbar = ''
 EXCEPTIONS
 cntl_error = 1
 cntl_system_error = 2
 create_error = 3
 lifetime_error = 4
 illegal_node_selection_mode = 5
 failed = 6
 illegal_column_name = 7.
IF sy-subrc <> 0.
 MESSAGE x208(00) WITH 'ERROR'. "#EC NOTEXT
ENDIF.
§2. Create Hierarchy-header
The simple ALV Tree uses the text of the fields which were used
for sorting to define this header. When you use
the 'normal' ALV Tree the hierarchy is build up freely
by the programmer this is not possible, so he has to define it
himself.
DATA l_hierarchy_header TYPE treev_hhdr.
PERFORM build_hierarchy_header CHANGING l_hierarchy_header.
§3. Create empty Tree Control
IMPORTANT: Table 'gt_sflight' must be empty. Do not change this table
(even after this method call). You can change data of your table
by calling methods of CL_GUI_ALV_TREE.
Furthermore, the output table 'gt_outtab' must be global and can
only be used for one ALV Tree Control.
CALL METHOD g_alv_tree->set_table_for_first_display
 EXPORTING
 i_structure_name = 'SFLIGHT'
 is_hierarchy_header = l_hierarchy_header
 CHANGING
 it_outtab = gt_sflight. "table must be empty !
§4. Create hierarchy (nodes and leaves)
PERFORM create_hierarchy.
§5. Send data to frontend.
CALL METHOD g_alv_tree->frontend_update.
wait for automatic flush at end of pbo
ENDFORM. " init_tree
*& Form build_hierarchy_header
 build hierarchy-header-information
 -->P_L_HIERARCHY_HEADER strucxture for hierarchy-header
FORM build_hierarchy_header CHANGING
 p_hierarchy_header TYPE treev_hhdr.
p_hierarchy_header-heading = 'Month/Carrier/Date'(300).
p_hierarchy_header-tooltip = 'Flights in a month'(400).
p_hierarchy_header-width = 30.
p_hierarchy_header-width_pix = ' '.
ENDFORM. " build_hierarchy_header
*& Form exit_program
 free object and leave program
FORM exit_program.
CALL METHOD g_custom_container->free.
LEAVE PROGRAM.
ENDFORM. " exit_program
*& Form create_hierarchy
 text
--> p1 text
<-- p2 text
FORM create_hierarchy.
DATA: ls_sflight TYPE sflight,
 lt_sflight TYPE sflight OCCURS 0,
 l_yyyymm(6) TYPE c, "year and month of sflight-fldate
 l_yyyymm_last(6) TYPE c,
 l_carrid LIKE sflight-carrid,
 l_carrid_last LIKE sflight-carrid.
DATA: l_month_key TYPE lvc_nkey,
 l_carrid_key TYPE lvc_nkey,
 l_last_key TYPE lvc_nkey.
§4a. Select data
SELECT * FROM sflight INTO TABLE lt_sflight UP TO g_max ROWS.
§4b. Sort output table according to your conceived hierarchy
We sort in this order:
 year and month (top level nodes, yyyymm of DATS)
 carrier id (next level)
 day of month (leaves, dd of DATS)
SORT lt_sflight BY fldate0(6) carrid fldate6(2).
Note: The top level nodes do not correspond to a field of the
output table. Instead we use data of the table to invent another
hierarchy level above the levels that can be build by sorting.
§4c. Add data to tree
LOOP AT lt_sflight INTO ls_sflight.
Prerequesite: The table is sorted.
You add a node everytime the values of a sorted field changes.
Finally, the complete line is added as a leaf below the last
node.
 l_yyyymm = ls_sflight-fldate+0(6).
 l_carrid = ls_sflight-carrid.
Top level nodes:
 IF l_yyyymm <> l_yyyymm_last. "on change of l_yyyymm
 l_yyyymm_last = l_yyyymm.
*Providing no key means that the node is added on top level:
 PERFORM add_month USING l_yyyymm
 CHANGING l_month_key.
The month changed, thus, there is no predecessor carrier
 CLEAR l_carrid_last.
 ENDIF.
Carrier nodes:
(always inserted as child of the last month
which is identified by 'l_month_key')
 IF l_carrid <> l_carrid_last. "on change of l_carrid
 l_carrid_last = l_carrid.
 PERFORM add_carrid_line USING ls_sflight
 l_month_key
 CHANGING l_carrid_key.
 ENDIF.
Leaf:
(always inserted as child of the last carrier
which is identified by 'l_carrid_key')
 PERFORM add_complete_line USING ls_sflight
 l_carrid_key
 CHANGING l_last_key.
ENDLOOP.
ENDFORM. " create_hierarchy
*& Form add_month
FORM add_month USING p_yyyymm TYPE c
 p_relat_key TYPE lvc_nkey
 CHANGING p_node_key TYPE lvc_nkey.
DATA: l_node_text TYPE lvc_value,
 ls_sflight TYPE sflight,
 l_month(15) TYPE c. "output string for month
get month name for node text
PERFORM get_month USING p_yyyymm
 CHANGING l_month.
l_node_text = l_month.
add node:
ALV Tree firstly inserts this node as a leaf if you do not provide
IS_NODE_LAYOUT with field ISFOLDER set. In form 'add_carrid_line'
the leaf gets a child and thus ALV converts it to a folder
automatically.
CALL METHOD g_alv_tree->add_node
 EXPORTING
 i_relat_node_key = p_relat_key
 i_relationship = cl_gui_column_tree=>relat_last_child
 i_node_text = l_node_text
 is_outtab_line = ls_sflight
 IMPORTING
 e_new_node_key = p_node_key.
ENDFORM. " add_month
FORM add_carrid_line USING ps_sflight TYPE sflight
 p_relat_key TYPE lvc_nkey
 CHANGING p_node_key TYPE lvc_nkey.
DATA: l_node_text TYPE lvc_value,
 ls_sflight TYPE sflight.
add node
ALV Tree firstly inserts this node as a leaf if you do not provide
IS_NODE_LAYOUT with field ISFOLDER set. In form 'add_carrid_line'
the leaf gets a child and thus ALV converts it to a folder
automatically.
l_node_text = ps_sflight-carrid.
CALL METHOD g_alv_tree->add_node
 EXPORTING
 i_relat_node_key = p_relat_key
 i_relationship = cl_gui_column_tree=>relat_last_child
 i_node_text = l_node_text
 is_outtab_line = ls_sflight
 IMPORTING
 e_new_node_key = p_node_key.
ENDFORM. " add_carrid_line
*& Form add_complete_line
FORM add_complete_line USING ps_sflight TYPE sflight
 p_relat_key TYPE lvc_nkey
 CHANGING p_node_key TYPE lvc_nkey.
DATA: l_node_text TYPE lvc_value.
WRITE ps_sflight-fldate TO l_node_text MM/DD/YYYY.
add leaf:
ALV Tree firstly inserts this node as a leaf if you do not provide
IS_NODE_LAYOUT with field ISFOLDER set.
Since these nodes will never get children they stay leaves
(as intended).
CALL METHOD g_alv_tree->add_node
 EXPORTING
 i_relat_node_key = p_relat_key
 i_relationship = cl_gui_column_tree=>relat_last_child
 is_outtab_line = ps_sflight
 i_node_text = l_node_text
 IMPORTING
 e_new_node_key = p_node_key.
*$ADDED: begin
IF ( ps_sflight-fldate = '20040522' ). " first flight date
 IF ( gd_del_nkey IS INITIAL ). " collect only first date
 gd_del_nkey = p_node_key.
 ENDIF.
ENDIF.
*$ADDED: end
ENDFORM. " add_complete_line
*& Form GET_MONTH
 text
 -->P_P_YYYYMM text
 <--P_L_MONTH text
FORM get_month USING p_yyyymm
 CHANGING p_month.
Returns the name of month according to the digits in p_yyyymm
DATA: l_monthdigits(2) TYPE c.
l_monthdigits = p_yyyymm+4(2).
CASE l_monthdigits.
 WHEN '01'.
 p_month = 'January'(701).
 WHEN '02'.
 p_month = 'February'(702).
 WHEN '03'.
 p_month = 'March'(703).
 WHEN '04'.
 p_month = 'April'(704).
 WHEN '05'.
 p_month = 'May'(705).
 WHEN '06'.
 p_month = 'June'(706).
 WHEN '07'.
 p_month = 'July'(707).
 WHEN '08'.
 p_month = 'August'(708).
 WHEN '09'.
 p_month = 'September'(709).
 WHEN '10'.
 p_month = 'October'(710).
 WHEN '11'.
 p_month = 'November'(711).
 WHEN '12'.
 p_month = 'December'(712).
ENDCASE.
CONCATENATE p_yyyymm+0(4) '->' p_month INTO p_month.
ENDFORM. " GET_MONTH
/code
Regards
Uwe

CLOSED- Recursive Tree with Recursive Table and seperate Relationship table

Hi All,
I am trying to achieve a adf recursive tree with recursive table but relationships are stored in separate table like
Table A:
id name
1 Val1
2 Val2
3 Val3
4 Val4
5 Val5
Table B:
fromid rel_type toid
1 Parent-of 2
2 Parent-of 3
3 Parent-of 4
1 Parent-of 5
I did lots of reading from forum and various posts but couldn't make it work.
Any suggestion what would be best approach and/or sample code for this ?
Thanks

I think that you can get this done by defining a VO that fetches all the top level nodes and have a view link to a VO that has all the details with a self recursive viewlink
Query for the top level
Select A.id, A.name
from A
Where A.id not in (select disctinct toid from B)
Query for the detail level
Select A.id, A.name, B.from, B.to
from A,b
where a.id = b.toid;
ViewLink is going to be:
detail.from=master.id
and another viewlink for the recursive relationship
detail.from=detail.to

Raise event when user select a node or leaf of a recursive tree

What is the event when user choose a node or leaf of a recursive tree? When I select the tree node / leaf it does not raise the event in OnAction. Thanks!

Hi,
TreeNodeType and TreeItemType have ONACTION event assocaited with them. This event gets called when the node or leaf is selected by user. Put a break point in these method, then you'll call to know if they are actually getting called or not.

Display recursive tree expanded upto element level

Hi all,
I have created a Recursive tree. I want to show expanded tree upto element level. I saw EXPAND_INTO_ELEMENT mehod of IF_WD_TABLE_METHOD_HNDL and SET_ON_EXPAND_ALL from class cl_wd_tree. Is it useful for me.
Please suggest how it works for me.
Thanks
Sanket

Any suggestions.

EDIT ALV TREE

Hi all,
I followed SAP example program to create 'COLUMN structure ALV tree' to diaplay and i have to make some of the fields as editable and get back the changed values in the internal table.Here i did not use field catalog at all.
I used gui_custom_container,cl_gui_custom_container,cl_gui_column_tree ...and added every column to the the tree object .Built the node with two internal table(like order header & order item ) to form a tree.How should i get the changed values in the internal table when user changes values in Colums of order item node.
Any help is appreciated.
thanks,
dan.

Hello all,
Thanks for you reponses.I was actually referring COLUMN_TREE_CONTROL_DEMOF01,now kind of changing the code like BCALV_TREE_DEMO, BCALV_TREE_SIMPLE_DEMO .Looks like i can make the field as editable by changing the edit field in layout object.But unlike 'GRID' object this tree object is not having any method like 'check_change_data' .
How to get back the changed/values in iternal table or by any other means.
Any idea of getting changed values from ALV tree object would be really helpful.
thanks,
dan

Editing non-tree cells problem in JTreeTable

Hello all,
I've been playing around with the JTreeTable for quite a while and have a fairly good grip on it. However, I've run into a problem that involves the display of cell data in the non-tree cells.
Assume I have a JTreeTable with one node below the root (and the root node is not displayed). Also assume I've edited some information in one of the other cells in a 5-celled JTreeTable. The JTreeTable behaves normally with regard to editing/setting the values of the table cells.
Now, with the click of a separate button, I programmatically create a new node in the JTree. I update the JTree model with a call to nodeChanged() and nodeStructureChanged() (or I could call reload() - both seem to work).
This successfully adds a node, but in the process clears the entire remainder of the table's cell values. If I call fireTableDataChanged(), then the display of the JTree gets all screwed up (basically what happens to the display if you add/remove nodes, but don't update the display in a JTree). Not only that, but the fireTableDataChanged() method still does not redisplay my cell information for the remainder of the table.
I'm at a loss to figure out what's responsible for this. The tableCellRenderer seems to work just fine until I add node. Even then, the tableCellRenderer for the JTree still works until I call fireTableDataChanged().
Any ideas?
Thank you,
Brion Swanson

I use a JTreeTable and in looking at my code, I've
noticed that I make use of treeTable.repaint() fairly
frequently (as whenever I update my stuff).Did the treeTable.updateUI do funky things to your JTree? It does on mine if I do a programmatic node addition or removal (basically any change to the tree structure will cause treeTable.updateUI() to completely destroy the display of the tree). This is a separate issue, but I thought I'd ask anyway since you seem to have run into at least a few of the same problems I'm experiencing.
I don't fully understand your problem<snip/>
do you mean
it drops all edits you have done?Yes, it drops all the edits except the one currently being "edited" (that is, the selected editable cell will not lose it's value).
I had a problem about it dropping the edits I had
done and I resolved them by adding key listeners
and played with the TableCellEditor.Could you elaborate on what you did to the TableCellEditor and which object you had listening to the keys (the table? or the tree? or something else?).
You help is greatly appreciated!
Brion Swanson

Editing in Tree....

Hi group,
In my tree I am setting in setCellRenderer method like
mytree.setCellRenderer(new CellRend());
In CellRend class:which extends DefaultTreeCellRenderer.
in that getTreeCellRendererComponent()... I write like..
public java.awt.Component getTreeCellRendererComponent(
     javax.swing.JTree tree,
     Object value,
     boolean sel,
     boolean expanded,
     boolean leaf,
     int w,
     boolean hasFocus) {
     setOpenIcon(new ImageIcon("open.gif"));
     setClosedIcon(new ImageIcon("closed.jpg"));
     java.awt.Component compo = super.getTreeCellRendererComponent(tree, value, sel, expanded, leaf, w, hasFocus);
     javax.swing.tree.DefaultMutableTreeNode node = (javax.swing.tree.DefaultMutableTreeNode)value;
     if(node.toString().equalsIgnoreCase("House"))
          tree.setEditable(false);
     else
          tree.setEditable(true);
     return compo;
in my tree I have "House" node out of 10 nodes.
I don't want to edit that particular "House" node.
But as per my code it is editing why?
Is any possible solution not to edit that "House" node.?
Shalinipriya.

if you call tree.setEditable(true) (or false) this changes the editing option for the entire tree, not just the current node. And the tree cell renderer gets called for all the nodes... So here's what is happening in your code:
Let us assume that node 7 is your "House" node...
The tree starts to render the nodes... it calls getTreeCellRendererComponent() for nodes 1 to 6, and each time, the expression (node.toString().equalsIgnoreCase("House")) is false, so it does: tree.setEditable(true). OK - now it gets to node 7, and (node.toString().equalsIgnoreCase("House")) is now true, so it does tree.setEditable(false) - making the entire tree not editable. Finally, it renders nodes 8, 9 & 10, where (node.toString().equalsIgnoreCase("House")) is false again, so it does: tree.setEditable(true), so when it has finished rendering, the entire tree is editable.
That's why it doesn't work. Now, I don't know if you can directlly make only one single node editable or not editable (unless someone else knows different??) One workaround would be to add a listener, and if the user tries to edit your House node, pop up a message telling them not to, or just silently change its value back to House after they have finished (That'll frustrate the hell out of 'em ;-)

Start Editing an Tree-Node programmatically

Hello there!
I have a JTree which the user can edit by clicking on the nodes three times. This I did setting "tree.setEditable(true);". Now i want a selected node to switch to editing-mode when the user clicks on a menu.
So how can I programmatically start editing?
Thanks a lot, DreamiX.

JTree has method
startEditingAtPath(TreePath path)
best regards
Stas

Editable Recursive Tree

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