How to use internal table in Exporting Parameter of method.

Question

Hi Friends,
I am new to abap oops and using the following code to read a select-option and pass the data in an internal table but on defining
internal table of a standard  type it is giving me following error :
ITAB is not an internal table - the OCCURS n specification is missing.
code
====
  class lcl_get_details DEFINITION.
    PUBLIC SECTION.
      types : r_carrid type RANGE OF sflight-carrid.
      data  : itab type STANDARD TABLE OF sflight.
      METHODS : get_data IMPORTING s_carrid type R_carrid
                         EXPORTING itab type sflight.
  ENDCLASS.   
class lcl_get_details IMPLEMENTATION.
  METHOD get_data.
    select *
    from sflight
    into table itab
    where carrid in s_carrid.
    if sy-subrc eq 0.
      sort itab by carrid.
    endif.
  endmethod.   
ERROR : ITAB is not an internal table - the OCCURS n specification is missing.
Kindly help.

Answer 1

Hi,
I think your problem is, because you use 2 variables named ITAB in method get_data.
Instance-variable ITAB is defined as STANDARD TABLE OF sflight.
Exporting-parameter ITAB is defined as sflight.
It seems like in implementation of get_data exporting-parameter ITAB is used.
Try this implementation:
METHOD get_data.
  select * from sflight into table me->itab
   where carrid in s_carrid.
  if sy-subrc eq 0.
  sort me->itab by carrid.
  endif.
ENDMETHOD.
This should solve your compiler error.
Nether the less, get_data will yield an empty structure as result.
Regards, Hubert
Edited by: Hubert Heitzer on Feb 24, 2010 10:22 AM