IS SUPPLIED in nested call

Question

Hi,
I have a method which is potentially slow (due to remote RFC connections).
Therefore I want to check which of the export parameters the caller actually requested. I found IS SUPPLIED for this purpose.
Unfortunately the method is also long and I would like to split it into some private method calls inside. But when I make a nested call into a submethod, the IS SUPPLIED method in there does not work anymore, since from the main method it is always requested.
Is there any easy way to come around this problem? Otherwise I will have to remember some booleans "XXX_IS_SUPPLIED" in the main method and pass them into the sub methods.
Thanks
Bruno
Edited by: Bruno Haller on Nov 24, 2009 1:39 PM

Answer 1

What I think you can do is:
- check if parameter is not initial in submethod -> this however will not always be true as you might pass empty param on purpose
- make importing parameter of submethod optional , then write two calls of submethod, one with passing you parameter when in method it is supplied , the other one without the parameter - if not supplied.
class lcl1 DEFINITION.
  public SECTION.
  methods: m1 importing i_par type c optional,
           m2 IMPORTING i_par type c OPTIONAL.
endclass.
class lcl1 IMPLEMENTATION.
  method m1.
    if i_par is SUPPLIED.
      m2( i_par = i_par ).
    else.
      m2( ).
    endif.     
  ENDMETHOD.
  method m2.
    if i_par is SUPPLIED.
      write: / 'Parameter is supplied'.
    else.
      write / 'Parameter is not supplied'.
    endif.
  endmethod.
ENDCLASS.
data:r type ref to lcl1.
START-OF-SELECTION.
CREATE OBJECT r.
write: / 'First call'.
r->m1( ).
write / 'Second call'.
r->m1( 'X' ).
Regards
Marcin