Passing an Internal Table as parameter to a method

Question

Hi,
   Can we pass an internal table as a parameter to a method.if so how can we do that?i am new to abap objects..

Answer 1

Hi Matt,
        Here is the code that i am trying to execute.I am extracting the data in the method "Extract" and passing it to the method "Display" to produce a report output.When i execute this it is giving me an error saying that t_mara is not an internal table since i just refered it with x_mara in the class definition.So how can i modify this code to pass t_mara as an internal table from the method "Extract".Please help me.
*& Report  ZOBJ_PRAC                                      *
REPORT  zobj_prac                                                   .
      CLASS example DEFINITION
CLASS example DEFINITION.
  PUBLIC SECTION.
        TYPES : BEGIN OF x_mara,
              matnr TYPE matnr,
              ersda TYPE ersda,
           END OF x_mara.
    METHODS : extract EXPORTING t_mara TYPE x_mara,
                      display IMPORTING it_mara TYPE x_mara.
ENDCLASS.                    "example DEFINITION
"example IMPLEMENTATION
      CLASS example IMPLEMENTATION
CLASS example IMPLEMENTATION.
  METHOD extract.
    DATA :lt_mara TYPE STANDARD TABLE OF x_mara INITIAL SIZE 0,
              lw_mara TYPE x_mara.
    SELECT matnr ersda FROM mara INTO TABLE lt_mara UP TO 10 ROWS.
    t_mara[]  =  lt_mara[].
  ENDMETHOD.                    "extract
  METHOD display.
    DATA :lt_mara TYPE STANDARD TABLE OF x_mara INITIAL SIZE 0,
          lw_mara TYPE x_mara.
    lt_mara[]  =  it_mara[].
    LOOP AT lt_mara INTO lw_mara.
      WRITE:/ lw_mara-matnr,
            20 lw_mara-ersda.
    ENDLOOP.
  ENDCLASS.                    "example IMPLEMENTATION
START-OF-SELECTION.
  DATA :  b1 TYPE REF TO example.
CREATE OBJECT b1 TYPE example.
  TYPES : BEGIN OF x_mara,
              matnr TYPE matnr,
              ersda TYPE ersda,
           END OF x_mara.
data : t_mara type standard table of x_mara initial size 0,
       it_mara type standard table of  x_mara initial size 0.
  call method b1->extract
    importing
     t_mara = t_mara.
     it_mara[]  =  t_mara[].
  call method b1->display
    exporting
     it_mara = it_mara.
Edited by: Sai Chaitanya on Dec 2, 2008 5:30 AM