Passing internal tables to a class

Question

Hi All,
I have a problem at the moment, I need to pass an internal table to a class
The problem is that depending on user input one of two differnet tables will be passed.
TYPES: BEGIN OF t_destination_structure,
          matnr        TYPE mbew-matnr,   
          swerk         TYPE mbew-bwkey,  
          sverpr        TYPE mbew-verpr,   
          speinh        TYPE mbew-peinh,  
          bwkey        TYPE mbew-bwkey,
          verpr          TYPE mbew-verpr,   
          peinh          TYPE mbew-peinh,  
          lbkum         TYPE mbew-lbkum,
          salk3          TYPE mbew-salk3,  
          new_verpr  TYPE mbew-verpr,
          new_salk3  TYPE mbew-salk3,
          bwtar           TYPE mbew-bwtar,   
          it_colours    TYPE lvc_t_scol,   
       END OF t_destination_structure.
TYPES: BEGIN OF t_pur_org_structure,
          matnr         TYPE mbew-matnr,
          bwkey       TYPE mbew-bwkey,
          verpr          TYPE mbew-verpr,
          peinh         TYPE mbew-peinh,
          lbkum         TYPE mbew-lbkum,
          salk3          TYPE mbew-salk3,
          new_verpr  TYPE mbew-verpr,
          new_salk3  TYPE mbew-salk3,
          bwtar          TYPE mbew-bwtar,
          it_colours   TYPE lvc_t_scol,
           END OF t_pur_org_structure.
DATA:       i_destination_structure     TYPE TABLE OF t_destination_structure,
                 i_pur_org_structure         TYPE TABLE OF t_pur_org_structure.
PERFORM Output USING i_destination_structure 1.
OR
PERFORM Output USING i_pur_org_structure 2.
" Output for def
FORM Output USING fuw_PassedTable fuw_Output_Switch
" assignment that I want to make o_EventHandle is already created
o_EventHandle->li_destination_structure = fuw_PassedTable.
" Class definition
CLASS lcl_LocalEventHandler DEFINITION.
    PUBLIC SECTION.
        DATA: li_destination_structure TYPE REF TO data, ************************************************************************
              lw_radio_choice TYPE string.
        METHODS: OnUserCommand FOR EVENT added_function OF cl_salv_events IMPORTING e_salv_function.
        " Applies the GLEP from a souce branch to selected branch(es) GELP
         " DATA: iPassedTable TYPE passedtable.
    PROTECTED SECTION.
    PRIVATE SECTION.
        METHODS: apply_change.
        METHODS: simulate_change.
ENDCLASS.
When run this produces the error cannot convert type H to I
All I need is the attribute to be a generic tabe that will become the passed table type, this sort of thing shouldnt be rocket science but I am having real trouble in my TYPE assignment
If anyone can help or maybe have some ideas in how I can do this that would be great
Cheers
Ian

Answer 1

Hi,
You have to create the tables dynamic. You can do this via CREATE DATA.. Also have a look at the RTTI classes.
I have added an example. Pass the itab via importing parameter (TYPE ANY TABLE), create data like the imported table, assign a field-symbol to the created data and, if needed, move the data from the passed itab to the dynamic itab.
REPORT  zz_dynamic_itab.
CLASS lcl_sample DEFINITION DEFERRED.
DATA lt_sflight     TYPE TABLE OF sflight.
DATA lt_spfli        TYPE TABLE OF spfli.
DATA lcl_sample  TYPE REF TO lcl_sample.
      CLASS lcl_sample DEFINITION
CLASS lcl_sample DEFINITION.
  PUBLIC SECTION.
    METHODS
      create_itab_from_data IMPORTING it_table TYPE ANY TABLE.
ENDCLASS.                    "lcl_sample DEFINITION
      CLASS lcl_sample IMPLEMENTATION
CLASS lcl_sample IMPLEMENTATION.
  METHOD create_itab_from_data.
    DATA lr_table    TYPE REF TO data.
    DATA lr_wa_table TYPE REF TO data.
    FIELD-SYMBOLS <lt_table> TYPE ANY TABLE.        "Dynamic Table
    FIELD-SYMBOLS <ls_table> TYPE ANY.              "Dynamic WA of Table
  Create data object from your table
    CREATE DATA lr_table LIKE it_table.
  Create your itab.
    ASSIGN lr_table->* TO <lt_table>.
    <lt_table> = it_table.
  Create wa
    CREATE DATA lr_wa_table LIKE LINE OF <lt_table>.
    ASSIGN lr_wa_table->* TO <ls_table>.
  ENDMETHOD.                    "create_table_from_data
ENDCLASS.                        "lcl_sample IMPLEMENTATION
START-OF-SELECTION.
Creates local class
  CREATE OBJECT lcl_sample.
First table: sflight
  SELECT *
    FROM sflight
    INTO TABLE lt_sflight.
Pass to class with method
  lcl_sample->create_itab_from_data( lt_sflight ).
Second table: spfli
  SELECT *
  FROM spfli
  INTO TABLE lt_spfli.
Pass to class with same method
  lcl_sample->create_itab_from_data( lt_spfli ).
Cheers,
Roelof