Oracle Forms Developer – Form Builder Reference, Volume 1

420
QUERY_TEXT Replaces the data set of the
hierarchical tree with an SQL query and causes it to
display.
ALLOW_EMPTY_BRANCHES Possible values are
PROPERTY_TRUE and PROPERTY_FALSE.
value Specify the value appropriate to the property you are
setting:
PROPERTY_TRUE The property is to be set to the
TRUE state.
PROPERTY_FALSE The property is to be set to the
FALSE state.
SET_TREE_PROPERTY examples
/*
** Built-in: SET_TREE_PROPERTY
*/
-- This code could be used in a WHEN-NEW-FORM-INSTANCE
-- trigger to initially populate the hierarchical tree
-- with data.
DECLARE
htree ITEM;
v_ignore NUMBER;
rg_emps RECORDGROUP;
BEGIN
-- Find the tree itself.
htree := Find_Item(’tree_block.htree3’);
-- Check for the existence of the record group.
rg_emps := Find_Group(’emps’);
IF NOT Id_Null(rg_emps) THEN
DELETE_GROUP(rg_emps);
END IF;
-- Create the record group.
rg_emps := Create_Group_From_Query(’rg_emps’,
’select 1, level, ename, NULL, to_char(empno) ’ ||
’from emp ’ ||
’connect by prior empno = mgr ’ ||
’start with job = ’’PRESIDENT’’’);
-- Populate the record group with data.
v_ignore := Populate_Group(rg_emps);
-- Transfer the data from the record group to the
hierarchical