Hierarchical tree not showing

Question

Hi, My hierarchical tree is not showing on the form, I have the following situation;
I have a table with the parent and child coloumns, I have created a Record_Group using a query that I have tested in PL/SQL it works
select 1, level, form_name
from iso_forms
connect by prior form_name=action
start with action is null
The rsult is
1 LEVEL FORM_NAME
1 1 Edit
1 2 Holder
1 2 Isotopes
1 2 Laboratories
1 2 Personal
1 2 Incident
1 2 Equipment
1 2 Over Exposure
1 2 Archive
1 1 Print
1 1 Queries
11 rows selected.
I have set in the properties of the tree to use the Record_Group that has this query, but when I run the form I only see a blank square where the tree should be showing.
Can anyone tell me what I am doing wrong?
Thank you
Michael

Answer 1

a control block is one not based on a table/view/procedure . check the block's query data source name. its must be blank.
I suggest you create a procedure where you create the record_group using
CREATE_GROUP_FROM_QUERY,populate_group and ftree.set_tree_property
Here is my code that I i used to populate my tree .it works:
PROCEDURE populate_the_tree IS
grp recordgroup;
error_number number;
grpname varchar2(20) :='rg_group';
tree_id item :=find_item('ctrl.tree');
grp_qry2 varchar2(500) :='select -1,level,ename,null,empno from emp start with mgr is null connect by prior empno=mgr';
begin
     grp := find_group(grpname);
     if not id_null(grp)
          then delete_group(grp);
     end if;
--     grp := create_group_from_query(grpname,grp_qry1||grp_qry2);
     grp := create_group_from_query(grpname,grp_qry2);
     error_number:=populate_group(grpname);
     if error_number <> 0
          then message('Error while populating tree');
          raise form_trigger_failure;
     end if;
     ftree.set_tree_property(tree_id,ftree.record_group,grp);
END;
Message was edited by:
lewismak2000