Dynamically creating JTree

Folks - I'm new to Java and hence requesting some
assitance in something I'm working on. I want to read
a ascii file that constains some containment hierarchy
eg., The file is listed below.
<pre>
# First field is parent, and fields seprated by '='
are childs.
NodeA=NodeC, NodeD, NodeE
NodeE=NodeZ,NodeK
NodeK=NodeF
</pre>
I have no problem in reading the file, and
parsing/tokenizing it at all.
How can I use the information here in creating a
dynamic JTree.
Any help would be greatly appreciated.- i assume that every node is named something unique and there can be no duplicates
- can you guarantee the order of the file? Is it always from the root downwards? ie. can you guarantee that the when you see "NodeE" in the first line that NodeE has not already been created? these details will greatly affect your algorithm. typically if you can guarantee a certain order or format of the file, it will greatly improve the efficiency of the algorithm
- here's an algorithm that would do the tree-building line by line, regardless of order, assuming no two nodes can be named the same thing, but it would probably be better to read in the entire file, storing the information in a vector or something and then go through all the data at once
- this algorithm should be applied after every line is read in; after the last line in the file is read in, the entire tree will be created: how do you know what is the root node?
- read in each line as: parent, child1, child2, etc...
- if a node named "parent" has not already been created, create a node named "parent":
DefaultMutableTreeNode node = new DefaultMutableTreeNode(parent);
- for each child, if a node named "child1" has not already been created, create a node named "child1" and add it as a child to "parent"
DefaultMutableTreeNode child = new DefaultMutableTreeNode(parent);
node.add(child);
- this algorithm is a pain because you always have to check if a node has already been created

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Good Evening.
Am new to swing, i need to create Dynamic Swing JTree for below StringArray.
Root has leaf node and Folders
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It would be great help if you send me the code.
Thanks in advance.
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Edited by: Shrinivas on Feb 18, 2011 7:00 AM

Hi Shrinivas,
one way could be to create the nodes level by level: first all level 0 nodes, than all level 1 nodes, and so on. In this case we don't have to bother about a parent node being already created or not. To find the parent node for a particular node we just make a simple method that processes the tree recursively, for example like this:
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            if (level < nodePath.length) {
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private void findParent(final Object o, final String[] nodePath, final int level) {
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Problem with embeding the same view in dynamically created view container

Hello Experts,
              I am getiing a dump when i try to embed the same view inside the dynamically created view container of
dynamically created tabs of a tabstrip
The requirement go like this, i have 2 views in which i have have to embed the 2nd view to view1 where i have an empty
tabstrip without tabs. During runtime i create tabs as well as view containers accordingly and then try to embed view2 in tabs.
I have put the below mentioned code in HANDLEIN,
DATA: lref_vcntlr TYPE REF TO if_wd_view_controller,
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wd_this->fire_to_edit_layout_plg( ).
This works fine for the first time.
However onaction tab select i change the embeding position( 'FILE_PERS_EDIT/view container name of different tab') of the view2 an try to embed view2 in a different tab.
At this point i get a dump stating View2 already present in the window 'FILE_PERSISTENCE_WND' of component.
I think, the view2 embediing has to be removed before i add the view2 in a different tab
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means to handle this problem?
Thanks & Best Regards,
Srini.

Hello Srini,
I found a solution to your problem, because I had a similar task.
In WDDOINIT I changed the method do_dynamic_navigation to if_wd_navigation_services_new~prepare_dynamic_navigation:
DATA:
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l_view_controller_api = wd_this->wd_get_api( ).
TRY.
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        EXPORTING
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          source_vusage_name        = 'VW_SUB_USAGE_1'
          source_plug_name          = 'TO_VW_CONTENT'
          target_component_name     = 'ZTEST_DYNAMIC'
          target_view_name          = 'VW_CONTENT'
          target_plug_name          = 'DEFAULT'
          target_embedding_position = 'VW_MAIN/VC_TAB.VW_SUB/TAB1_VC'
        RECEIVING
          repository_handle         = wd_this->g_rep_handle.
    CATCH cx_wd_runtime_repository .
ENDTRY.
wd_this->fire_to_vw_content_plg( param1 = 'TAB1' ).
In the action I first deleted the navigation targets, then navigated to the empty-view and last I called my target view:
DATA:
    lv_position           TYPE string,
    l_view_controller_api TYPE REF TO if_wd_view_controller,
    lr_view_usage         TYPE REF TO if_wd_rr_view_usage,
    lr_view_***_t         TYPE wdrr_vca_objects,
    lr_view_***           LIKE LINE OF lr_view_***_t.
l_view_controller_api = wd_this->wd_get_api( ).
lr_view_usage = wd_this->g_view->get_view_usage( ).
lr_view_usage->delete_all_navigation_targets( plug_name = 'TO_VW_CONTENT' ).
CLEAR lv_position.
CONCATENATE 'VW_MAIN/VC_TAB.VW_SUB/' old_tab '_VC' INTO lv_position.
TRY.
      l_view_controller_api->if_wd_navigation_services_new~do_dynamic_navigation(
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      source_vusage_name = 'VW_SUB_USAGE_1'
      source_plug_name   = 'TO_EMPTYVIEW'
      target_component_name = 'ZTEST_DYNAMIC'
      target_view_name   = 'EMPTYVIEW'
      target_plug_name   = 'DEFAULT'
      target_embedding_position = lv_position ).
    CATCH cx_wd_runtime_repository.
ENDTRY.
CLEAR lv_position.
CONCATENATE 'VW_MAIN/VC_TAB.VW_SUB/' tab '_VC' INTO lv_position.
TRY.
      wd_this->g_rep_handle = l_view_controller_api->if_wd_navigation_services_new~prepare_dynamic_navigation(
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        source_vusage_name = 'VW_SUB_USAGE_1'
        source_plug_name   = 'TO_VW_CONTENT'
        target_component_name = 'ZTEST_DYNAMIC'
        target_view_name   = 'VW_CONTENT'
        target_plug_name   = 'DEFAULT'
        target_embedding_position = lv_position ).
    CATCH cx_wd_runtime_repository.
ENDTRY.
wd_this->fire_to_vw_content_plg( param1 = tab ).
Ann.: I my example, I had 3 views: VW_MAIN which embedds VW_SUB. VW_SUB has the tabs in it and VW_SUB embedds VW_CONTENT.
BR,
Roland

Is there a way to use a statically defined appearance stream in a dynamically created annotation?

Hello,
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Each page in my document has many citations that refer to other pages in the document. When a user hovers over the citation, I want a 'popup' to appear containing a depiction of the destination. However, as the destination will itself have citations, I also want the 'popup' to contain citations that the user can hover over, triggering another popup, etc. In this way, a user could navigate throughout the document without leaving the page or even clicking the mouse.
Obviously, with even a modest number of citations per page, pre-calculating and statically defining all of these widgets causes a combinatorial explosion, making the document sluggish and very large.
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Is there a way to use a statically defined appearance stream in a dynamically created annotation?
Thank you,
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Hi George, I've gotten named APs to work, and I expect hidden buttons will follow. Thank you very much!
Quick follow-up - I will have many documents embedded within the same pdf file, and some of these documents will contain identical popups. However, I don't want to store identical icons in each document on account of file size.
Instead, I'd like to store one instance of each icon for all documents in the file.
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How to get the co-ordinates of a dynamically created input field

Hello Frn's
i have created a dynamic text view . but this text view is not appearing at proper position . I want palce it infront of a dynamically created input field . how can i do this ?
as i am thinking ...i should first of all get info about the co-ordinates of dynamaclly creatd input field . and with respect to these co-ordinates ...set the position of text View .
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Thanks and Regards
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Hi,
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I would advice not to create dynamic UI elements( instead you can create them statically and then play with visibility status through context binding ). This will be more effective way and less error prone. This is also recommended practice.
still,For dynamic creation you can refer to following wiki:
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regards
Manas Dua

How dynamically create connection pool and Datasource

Hi
How I can dynamically create a connection pool and Data source in Oracle 10g Application server. In our J2EE application the user will be login with db user name, password and database name. I want to create connection pool and data source on the fly while login the user with database name. I our application we have access approximate 80 Databases. so my approach is given bellow
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Kindly throw some light on managing connection pool programmatically or in application run time.
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Assigning a 'dynamically created sequence' value to a variable

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v_seq_name := 'seq_'||loadid||v_table_name;
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can you please suggest me how i can get the value in plsql block.

DIVI wrote:
in my procedure i am creating a sequence on the fly, i am preparing the name with some passed parameters like below
v_seq_name := 'seq_'||loadid||v_table_name;
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and now after doing some operations i need to assign the current value of sequence to a number variable i tried following but not working
1) v_curr_value : = v_seq_name.currval ;
2) select v_seq_name||'.nextval' into v_curr_value from dual;
can you please suggest me how i can get the value in plsql block.Well, you haven't given the error you are getting but I guess the procedure isn't compiling? You need to execute immediate any reference to the sequence.
Having said that, your architecture is probably wrong if you are dynamically creating things in a procedure.
Why do you need to create them dynamically?

Dynamically creating a Record Group based on Previously entered Record Grou

Forms [32 Bit] Version 10.1.2.3.0 (Production)
Hi,
I know how to dynamically create a record group based on a query and putting the code in When new form instance.
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I have a record group with selects a Location,
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I have put the code in the Location field in the when-list-changed trigger.
I am getting this error:
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here is the code:
DECLARE
v_recsql Varchar2(1000); -- The SQL for creating the Record Group.
v_recgrp RecordGroup; -- Record Group
v_status Number; -- Return Value of Populate_Group function.
c_where VARCHAR2(1000);
BEGIN
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THEN -- No Error, record group has been successfully created.
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v_status := POPULATE_GROUP('v_recgrp');
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THEN -- No Error. Record Group has been Populated.
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END IF; -- IF v_status = 0
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DELETE_GROUP('v_recgrp');
END IF; -- IF NOT ID_NULL(v_recgrp)
END;thanks for your assistance.

Hi,
Once record status gets change for block you can not populate/repopulate the list item. Keep those list items as non-database item with different names and create different items as database orignal items. Than assign the values in WHEN-LIST-CHANGE trigger to the actual database items.
-Ammad

Uploading data from excel file to a dynamically created internal table

Hi,
I have a requirement where i have to upload data from an excel file into a database table. I would be able to determine the structure of the table only at runtime based on the user input.. so i have created an internal table dynamically.
Could you please tell me if its possible to upload data from an excel file to the dynamically created internal table using any function modules?
I thought of doing this by declaring a generic internal table of one field and then uploading the *.csv file into it and then splitting it based on "," and then assigning it to the field symbol referencing the internal table.. but my file length exceeds 132 characters and i'm only able to get data of lenght 132 char's in my internal table ( generic one).
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Thanks in advance,
Harsha

Sure, check this out.
report zrich_0002.
type-pools: slis.
field-symbols: <dyn_table> type standard table,
               <dyn_wa>,
               <dyn_field>.
data: it_fldcat type lvc_t_fcat,
      wa_it_fldcat type lvc_s_fcat.
type-pools : abap.
data: new_table type ref to data,
      new_line type ref to data.
data: iflat type table of string.
data: xflat type string.
data: irec type table of string with header line.
data: tabix type sy-tabix.
data: file type string.
selection-screen begin of block b1 with frame title text .
parameters: p_file type rlgrap-filename default 'c:Test.csv'.
parameters: p_flds type i.
selection-screen end of block b1.
start-of-selection.
* Add X number of fields to the dynamic itab cataelog
do p_flds times.
    clear wa_it_fldcat.
    wa_it_fldcat-fieldname = sy-index.
    wa_it_fldcat-datatype = 'C'.
    wa_it_fldcat-inttype = 'C'.
    wa_it_fldcat-intlen = 10.
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enddo.
* Create dynamic internal table and assign to FS
call method cl_alv_table_create=>create_dynamic_table
               exporting
                  it_fieldcatalog = it_fldcat
               importing
                  ep_table        = new_table.
assign new_table->* to <dyn_table>.
* Create dynamic work area and assign to FS
create data new_line like line of <dyn_table>.
assign new_line->* to <dyn_wa>.
file = p_file.
call method cl_gui_frontend_services=>gui_upload
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    changing
      data_tab                = iflat
    exceptions
      file_open_error         = 1
      file_read_error         = 2
      no_batch                = 3
      gui_refuse_filetransfer = 4
      invalid_type            = 5
      no_authority            = 6
      unknown_error           = 7
      bad_data_format         = 8
      header_not_allowed      = 9
      separator_not_allowed   = 10
      header_too_long         = 11
      unknown_dp_error        = 12
      access_denied           = 13
      dp_out_of_memory        = 14
      disk_full               = 15
      dp_timeout              = 16
      others                  = 17.
loop at iflat into xflat.
    clear irec. refresh irec.
    split xflat at ',' into table irec.
    loop at irec.
      tabix = sy-tabix.
      assign component tabix of structure <dyn_wa> to <dyn_field>.
      <dyn_field> = irec.
    endloop.
    append <dyn_wa> to <dyn_table>.
endloop.
* Write out data from table.
loop at <dyn_table> into <dyn_wa>.
    do.
      assign component sy-index of structure <dyn_wa> to <dyn_field>.
      if sy-subrc <> 0.
        exit.
      endif.
      if sy-index = 1.
        write:/ <dyn_field>.
      else.
        write: <dyn_field>.
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endloop.
Regards,
Rich Heilman

How to set a value to a dynamically created node/attribute?

Hi,
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Hi
Steps:
1) Create the action click is done statically (you cannot create action dyanmically)
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code
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Arun

How do I reference a dynamically created MovieClip from another MovieClip?

Hi,
I'd be grateful for any pointers to the following problem:
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import flash.display.MovieClip;
panel.buttonMode = true;
var lang:uint = 1;
var url_Link:String=MovieClip(root).program.websiteXML .language[lang].pages.titlePage[MovieClip(root).program.linkPage].texts.pageList.txt[numT XT].@link;
var urlPage:Number=Number(MovieClip(root).program.webs iteXML.language[lang].pages.titlePage[MovieClip(root).program.linkPage].texts.pageList.tx t[numTXT].@linkPage);
var request:URLRequest;
var linkIndex:uint;
var lastClickedLink:MovieClip;   //This is supposed to store the last link that has been clicked - it doesn't work
panel.addEventListener(MouseEvent.CLICK, clicLink);
panel.addEventListener(MouseEvent.ROLL_OVER, mouseOverLink);
panel.addEventListener(MouseEvent.ROLL_OUT, mouseOutLink);
function mouseOverLink(event:MouseEvent):void {
      MovieClip(this).gotoAndPlay('s1');
function mouseOutLink(event:MouseEvent):void {
      if(numTXT !== (linkIndex - 1)/5){         //freezes mouseOver state if this is the link for the current page
           MovieClip(this).gotoAndPlay('s2');
function clicLink(event:MouseEvent):void {
      var linkpage:uint = MovieClip(root).program.linkPage;
      if (url_Link) {
           request = new URLRequest(url_Link);
           navigateToURL(request);
      } else {
           linkIndex = numTXT * 5 + 1;
           if(linkpage == 1){
               MovieClip(root).chPages.cont.page_about_mc.page3Tu rner_mc.gotoAndStop([linkIndex]);
          } else if (linkpage == 2){
               MovieClip(root).chPages.cont.page3_mc.page3Turner_ mc.gotoAndStop([linkIndex]);
     lastClickedLink.gotoAndPlay('s2'); // this is supposed to release the previous clicked-on link from it's mouseOver state - doesn't work
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If anyone can help, that would be great.

What you might be after for that line is to use:
lastClickedLink = MovieClip(event.currentTarget);
For what you show, the name property of an object is a String, so I would expect you to be getting an error regarding trying to get a String to act like a MovieClip when you try to tell it to gotoAndPlay('s2').

Dynamically create and remove TEXT items in forms

Hi Guys,
Is there a way to dynamically create and remove TEXT items in form. For example I have the EMP and DEPT table and when
I select the EMP table name from the LOV, rows of the EMP table with column name and data should get displayed on the screen and likewise a similar action for DEPT table and
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Use OLE concept of developer and map Excel as an object
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Passing values to dynamically created internal table

Hi,
I have the flat file data as
f1,f2,f3........so on
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I have a variable var which contains the data
V1,0001,0002.........so on
data: var type string.
The value of field f1 is v1
The value of field f2 is 0001
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CALL METHOD cl_alv_table_create=>create_dynamic_table
    EXPORTING
      it_fieldcatalog           = lt_fieldcatalog
    IMPORTING
      ep_table                  = <fs_data>
    EXCEPTIONS
      generate_subpool_dir_full = 1
      OTHERS                    = 2.
IF sy-subrc <> 0.
ENDIF.
ASSIGN <fs_data>->* TO <fs_1>.
Now for <fs_1> I have to pass the corresponding values of the fields f1 f2 f3 .
How can i solve this.
Thanks and regards ,
Parvatha Reddy

Hi,
There is no data in <fs_1>.
I need to pass the data form the string var to the fields of <fs_1>..
I understand that you want to populate the internal table <fs_1>.
for that you fist need work area.. use below statement to create work area..
DATA: new_line TYPE REF TO data.
CREATE DATA new_line LIKE LINE OF <fs_1>.
ASSIGN new_line->* TO <fs_2>.
<fs_2> is not your work aread...
to assign value to each field of you work aread <fs_2>. use statement
ASSIGN COMPONENT 1 OF STRUCTURE <fs_2> TO <fs_3>.
<fs_3> = f1 .
now <fs_3> will point to the first field of work area <fs_2>, f1 is value from your string .. repeat above for each field in workarea, by increasing the component number. Once your work area is filled
append it to table.
append <fs_2> to <fs_1>
apologies if I am not getting the requiremnt correctly..

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