Query in Parameters in Oracle Forms 6i

Question

Can any one explain me how to go with parameters in oracle forms 6i's Object Navigator.If explained with an example it will be of great help for me.
Thanks,
Prathap

Answer 1

Hello,
Forms parameters are usefull to receive a value from a calling form or for a command line.
You can pass a value to a form through these parameters, which value can be read inside the form.
Assume your form have to display only employees of departement 10.
In the parameter node, you create a new parameter then name it : DEPARTEMENT (number)
A the start of this form, you can filter the data in the Where clause property of the block:
  DEPTNO = :PARAMETER.DEPARTEMENTand, when the first form call this one, it pass this parameter in the CALL_FORM() built-in
Declare
  pl_id PARAMLIST;
  pl_name VARCHAR2(10);
Begin 
  -- create the parameter list --
  pl_name :=  'temp';
  pl_id :=  get_parameter_list(pl_name);
  IF NOT ID_NULL(pl_id) THEN
    destroy_parameter_list(pl_id);
  END IF;
  pl_id := create_parameter_list(pl_name);
  -- add the parameter to the list --
  add_parameter(pl_id, 'DEPARTEMENT', TEXT_PARAMETER, 10);
  -- call the employees dialog --
  call_form('EMP_DIALOG', HIDE, NO_REPLACE, NO_QUERY_ONLY, NO_SHARE_LIBRARY_DATA, pl_id);
End ;Hope this is clear enough.
Francois