Perform setting OOP ALV for multiple reports using Field Symbols

Question

Hi, Abapers ... i try to write a programme which using ONE oop ALV but 2 different structure internal table. the last result should be 2 radio button. first button is r_wbs and 2ns r_kpi. r_wbs will display 4 column answer and r_kpi will display 10 columns answer with different column name. i successfully implemented using FIELDS SYMBOLS but the problems i failed to perform customized setting forALV (report's tittle, column name, different layout etc)  for 2 different reports.  this is the programme. Please Give Opinion, simple example will be more helpful. Thanks You Very Much
*&this report experimental how to print into ONE alv
*&with 2 diffrent structure internal table
REPORT  zfiroopalv.
SELECTION-SCREEN BEGIN OF BLOCK mode WITH FRAME TITLE text-002.
PARAMETERS r_wbs RADIOBUTTON GROUP mode DEFAULT 'X'.
PARAMETERS r_kpi RADIOBUTTON GROUP mode.
SELECTION-SCREEN END OF BLOCK mode.
CLASS lcl_main DEFINITION.
PUBLIC SECTION.
CLASS-DATA: md_wbs TYPE c LENGTH 1.
METHODS: process,
         write.
DATA: mdo_data TYPE REF TO data.
TYPES: BEGIN OF st_wbs,
rsnum TYPE zmeime002a-rsnum,
rspos TYPE zmeime002a-rspos,
a TYPE zmmgitab01-menge,
b TYPE zmeime002a-bdmng,
c TYPE zmeime002a-bdmng,
d TYPE zmeime002a-bdmng,
e TYPE zmeime002a-bdmng,
f TYPE zmmgitab01-menge,
g TYPE zmmgitab01-menge,
END OF st_wbs.
TYPES: BEGIN OF st_kpi,
regio TYPE zmeime002a-regio,
gsber TYPE zmeime002a-gsber,
gtext TYPE zmeime002a-gtext,
x TYPE zmmgitab01-menge,
y TYPE zmmgitab01-menge,
z TYPE zmmgitab01-menge,
END OF st_kpi.
CLASS-DATA: it_wbs TYPE TABLE OF st_wbs,
            wa_wbs LIKE LINE OF it_wbs.
CLASS-DATA: it_kpi TYPE TABLE OF st_kpi,
            wa_kpi LIKE LINE OF it_kpi.
PRIVATE SECTION.
DATA: set_display_setting TYPE REF TO cl_salv_table.
DATA: display_settings TYPE REF TO cl_salv_display_settings.
DATA: salv_table TYPE REF TO cl_salv_table.
DATA: error TYPE REF TO cx_root.
DATA: errtext TYPE string.
ENDCLASS.
CLASS lcl_kpi DEFINITION INHERITING FROM lcl_main.
PUBLIC SECTION.
METHODS: process_kpi.
PRIVATE SECTION.
ENDCLASS.
* C.L.A.S.S lcl_main D.E.F.I.N.I.T.I.O.N
CLASS lcl_wbs DEFINITION INHERITING FROM lcl_main.
PUBLIC SECTION.
METHODS: process_wbs.
PRIVATE SECTION.
ENDCLASS.
* m.a.i.n. .p.r.o.g.r.a.m.
START-OF-SELECTION.
  DATA: o_main TYPE REF TO lcl_main.
DATA: p_wbs TYPE c.
CREATE OBJECT o_main.
  CASE 'X'.
  WHEN r_wbs.
      o_main->md_wbs = 'X'.
  WHEN r_kpi.
      o_main->md_wbs = ' '.
  ENDCASE.
  o_main->process( ).
  o_main->write( ).
CLASS lcl_main IMPLEMENTATION.
*ENDMETHOD.
METHOD process.  " NOTE: public method
DATA: o_main TYPE REF TO lcl_main,
      o_wbs TYPE REF TO lcl_wbs,
      o_kpi TYPE REF TO lcl_kpi.
CREATE OBJECT: o_wbs,o_kpi.
  IF ( me->md_wbs = 'X' ).
      CALL METHOD o_wbs->process_wbs( ).  " NOTE: private method
      GET REFERENCE OF me->it_wbs INTO me->mdo_data.
  ELSE.
      CALL METHOD o_kpi->process_kpi( ).  " NOTE: private method
      GET REFERENCE OF me->it_kpi INTO me->mdo_data.
  ENDIF.
ENDMETHOD.
METHOD write.
FIELD-SYMBOLS:
  <lt_outtab>    TYPE table.
  ASSIGN me->mdo_data->* TO <lt_outtab>.
cl_salv_table=>factory(
EXPORTING
list_display = if_salv_c_bool_sap=>false
IMPORTING
r_salv_table = salv_table
CHANGING
t_table = <lt_outtab>
salv_table->display( ).
ENDMETHOD.
ENDCLASS.
CLASS lcl_kpi IMPLEMENTATION.
METHOD process_kpi.
*********** run some select statement into it_kpi*******
ENDMETHOD.
ENDCLASS.
CLASS lcl_wbs IMPLEMENTATION.
METHOD process_wbs.
*********** run some select statement into it_wbs*******
ENDMETHOD.
ENDCLASS.

Answer 1

Hi,
I had similar requirement wherein I was supposed to display different data using 2 different internal tables on a subscreen area.
The screen consists of two parts: 1) selection-screen with few input fields and two buttons 2) Subscreen area where the report need to be displayed. This report is displayed based on the button that the user is selecting. For this I have done the following things:
1. Capture the sy-ucomm when user is clicking on any of the two buttons in PAI. Then perform data fetch operation.
         MODULE USER_COMMAND_9003 INPUT.
             CASE OK_CODE.
                 WHEN 'DETAIL'.
                   GV_RPT = OK_CODE.
                   PERFORM F_GET_DETAIL_DATA.
                 WHEN 'REPORT'.
                   GV_RPT = OK_CODE.
                   PERFORM F_GET_REPT_DATA.
               ENDCASE.
         ENDMODULE.                 " USER_COMMAND_9003  INPUT
2.  Declare two different ALV's with the fieldcat similar to 2 internal tables respectively. Use the above sy-ucomm PBO to call appropriate ALV.
         MODULE DISPLAY_ALV OUTPUT.
           IF GV_RPT EQ 'DETAIL'.
             PERFORM F_FIELDCAT_DETAIL.
             PERFORM F_LAYOUT_DETAIL.
             PERFORM F_EXCLUDE_TOOLBAR_DETAIL.
             PERFORM F_DISPLAY_ALV_DETAIL.
           ELSEIF GV_RPT EQ 'REPORT'.
             PERFORM F_FIELDCAT_REPT.
             PERFORM F_LAYOUT_REPT.
             PERFORM F_EXCLUDE_TOOLBAR_REPT.
             PERFORM F_DISPLAY_ALV_REPT.
           ENDIF.
         ENDMODULE.                 " DISPLAY_ALV  OUTPUT
3. Before displaying ALV you need to free the container and ALV.
FORM F_DISPLAY_ALV_DETAIL .
IF GC_CONTAINER_ES IS NOT INITIAL.
    CALL METHOD GC_CONTAINER_ES->FREE
      EXCEPTIONS
        CNTL_ERROR        = 1
        CNTL_SYSTEM_ERROR = 2
        OTHERS            = 3.
    IF SY-SUBRC <> 0.
    MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
               WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
    ENDIF.
  ENDIF.
  IF GC_ALV_GRID_ES IS NOT INITIAL.
    CALL METHOD GC_ALV_GRID_ES->FREE
      EXCEPTIONS
        CNTL_ERROR        = 1
        CNTL_SYSTEM_ERROR = 2
        OTHERS            = 3.
    IF SY-SUBRC <> 0.
    MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
               WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
    ENDIF.
  ENDIF.
  IF GC_CONTAINER_TB IS NOT INITIAL.
    CALL METHOD GC_CONTAINER_TB->FREE
      EXCEPTIONS
        CNTL_ERROR        = 1
        CNTL_SYSTEM_ERROR = 2
        OTHERS            = 3.
    IF SY-SUBRC <> 0.
    MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
               WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
    ENDIF.
  ENDIF.
  IF GC_ALV_GRID_TB IS NOT INITIAL.
    CALL METHOD GC_ALV_GRID_TB->FREE
      EXCEPTIONS
        CNTL_ERROR        = 1
        CNTL_SYSTEM_ERROR = 2
        OTHERS            = 3.
    IF SY-SUBRC <> 0.
    MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
               WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
    ENDIF.
  ENDIF.
  CREATE OBJECT GC_CONTAINER_ES
    EXPORTING
      CONTAINER_NAME              = 'CC_9003'
    EXCEPTIONS
      CNTL_ERROR                  = 1
      CNTL_SYSTEM_ERROR           = 2
      CREATE_ERROR                = 3
      LIFETIME_ERROR              = 4
      LIFETIME_DYNPRO_DYNPRO_LINK = 5
      OTHERS                      = 6.
  CREATE OBJECT GC_ALV_GRID_ES
    EXPORTING
      I_PARENT          = GC_CONTAINER_ES
    EXCEPTIONS
      ERROR_CNTL_CREATE = 1
      ERROR_CNTL_INIT   = 2
      ERROR_CNTL_LINK   = 3
      ERROR_DP_CREATE   = 4
      OTHERS            = 5.
  CALL METHOD GC_ALV_GRID_ES->SET_TABLE_FOR_FIRST_DISPLAY
    EXPORTING
      IS_LAYOUT                     = GS_LAYOUT_ES
      IT_TOOLBAR_EXCLUDING          = GT_TOOLBAR_ES
    CHANGING
      IT_OUTTAB                     = GT_ES_REPT
      IT_FIELDCATALOG               = GT_FIELDCAT_ES
    EXCEPTIONS
      INVALID_PARAMETER_COMBINATION = 1
      PROGRAM_ERROR                 = 2
      TOO_MANY_LINES                = 3
      OTHERS                        = 4.
ENDFORM.                    " F_DISPLAY_ALV_DETAIL
Similarly define the FORM F_DISPLAY_ALV_REPT.     
Hope this will be useful for you. If you have any more queries let me know.