How to pass internal table to method of class

Question

Hi all,
I am new to abap objects, i want to pass one internal table to class.
i am trying in this way.
class c1 definition.
method get_material importing t_stpo  type any table
                               exporting t_mast type any table.
endmethod.
endclass.
class c1 implementation.
method get_material.
select f1 f2 f3 from <tab> into table t_mast
        for all entries in t_stpo
        where stlnr = t_stpo-stlnr.
endmethod.
endclass.
ERROR:
"stlnr" is not available
if i use this way. its not giing error.
class c1 definition.
method get_material exporting t_mast type any table.
endmethod.
endclass.
class c1 implementation.
method get_material.
select f1 f2 f3 from <tab> into table t_mast
        for all entries in it_stpo
        where stlnr = it_stpo-stlnr.
endmethod.
endclass.
how to pass internal table with some specific reference may be using like or type <it_xxxx>
thanks

Answer 1

Try this.
TYPES : BEGIN OF ty_stpo,
         stlnr TYPE stpo-stlnr,
         idnrk TYPE stpo-idnrk,
         menge TYPE stpo-menge,
        END OF ty_stpo,
        BEGIN OF ty_mast,
         matnr TYPE mast-matnr,
         werks TYPE mast-werks,
         stlnr TYPE mast-stlnr,
        END OF ty_mast,
        tt_stpo TYPE TABLE OF ty_stpo,
        tt_mast TYPE TABLE OF ty_mast.
DATA : it_stpo TYPE tt_stpo,
       it_mast TYPE tt_mast.
*       CLASS c1 DEFINITION
CLASS c1 DEFINITION.
  PUBLIC SECTION.
    METHODS : get_bom_numbers EXPORTING ex_stpo type tt_stpo,
              get_parent_material IMPORTING im_stpo TYPE tt_stpo
                                  EXPORTING ex_mast TYPE tt_mast.
    endclass.
*       CLASS c1 IMPLEMENTATION
CLASS c1 IMPLEMENTATION.
  METHOD get_bom_numbers.
  ENDMETHOD.                    "get_bom_numbers
  METHOD get_parent_material.
  ENDMETHOD.                    "get_parent_material
START-OF-SELECTION.
  DATA : obj TYPE REF TO c1.
  CREATE OBJECT obj.
  CALL METHOD obj->get_bom_numbers
    IMPORTING
      t_stpo = it_stpo.
  CALL METHOD obj->get_parent_material
    EXPORTING
      im_stpo = it_stpo
    IMPORTING
      ex_mast = it_mast.
Regards,
Rich Heilman