ALV: changing internal table in data_changed event.

Former Member — Mon, 12 Nov 2007 11:29:16 GMT

Hi, ABAP-gurus.

I use OO ALV with editable columns, so I handle data_changes event to check the data, entered in ALV by user.

I need to change data in some other cells, connected with changed.

Chahging internal table directly doesn't work here.

With the cells in the same row method er_data_changed->modify_cell works fine, but now I need to change data in rows, that haven't been touched upon the changing.


  LOOP AT er_data_changed->mt_mod_cells INTO ls_cell.
    READ TABLE gt_bul ASSIGNING <fs_bul> INDEX ls_cell-row_id.
    CHECK sy-subrc = 0.
    CASE ls_cell-fieldname.
      WHEN 'EXTBULNR'.

        LOOP AT gt_bul ASSIGNING <fs_bul_tmp>
                           WHERE prknum = <fs_bul>-prknum AND
                                 wbillnr = <fs_bul>-wbillnr AND
                                 wbillgjahr = <fs_bul>-wbillgjahr AND
                                 shiftnum = <fs_bul>-shiftnum AND
                                 pernr = <fs_bul>-pernr.
          CALL METHOD er_data_changed->modify_cell
            EXPORTING
              i_fieldname = 'EXTBULNR'
              i_value        = ls_cell-value
              i_row_id     = sy-tabix.
        ENDLOOP.
    ENDCASE.
  ENDLOOP.

This peace of code cause dump ( there is no the proper row in the list of changed row in er_data_changed ).

Anybody can help me?

Re: ALV: changing internal table in data_changed event.

Former Member — Thu, 15 Nov 2007 11:59:26 GMT

Hello,

In case you need to modify arbitrary no of rows and cells from that event handler you should use a different approach.....

Assuming that your internal table is gt_bul and your alv grid variable is gr_alv_grid...You need to call...

CALL METHOD gr_alv_grid->refresh_table_display

EXPORTING

i_soft_refresh = 'X'

EXCEPTIONS

finished = 1

OTHERS = 2.

after you have finished updating internal table gt_bul directly, like...

LOOP AT gt_bul ASSIGNING <fs_bul_tmp>

WHERE prknum = <fs_bul>-prknum AND

wbillnr = <fs_bul>-wbillnr AND

wbillgjahr = <fs_bul>-wbillgjahr AND

shiftnum = <fs_bul>-shiftnum AND

pernr = <fs_bul>-pernr.

<fs_bul_tmp> = ls_cell-value

ENDLOOP.

Regards,

Manish

Re: ALV: changing internal table in data_changed event.

uwe_schieferstein — Thu, 15 Nov 2007 20:37:54 GMT

Hello Aleksandr

The most appropriate event for additional modifications of the output data AFTER having retrieved the changes from the editable ALV list is event DATA_CHANGED_FINISHED.

Why?

Because the output itab is already updated with the changes from the editable grid AND the changes are available (ET_GOOD_CELLS).

For implementing the logic have a look at my sample report ZUS_SDN_ALVGRID_EDITABLE_5. Depending on the changed value for the delete flag the sort key is modified afterwards:

- LOEVM = 'X' -> ZUAWA = ' ' (space)
- LOEVM = ' '  -> ZUAWA = '002'

*&---------------------------------------------------------------------*
*& Report  ZUS_SDN_ALVGRID_EDITABLE_5
*&
*&---------------------------------------------------------------------*
*&
*&
*&---------------------------------------------------------------------*

REPORT  zus_sdn_alvgrid_editable_5.


TYPE-POOLS: abap.

DATA:
  gd_repid         TYPE syrepid,
  gd_okcode        TYPE ui_func,
*
  gs_layout        TYPE lvc_s_layo,
  gt_fcat          TYPE lvc_t_fcat,
  go_docking       TYPE REF TO cl_gui_docking_container,
  go_grid          TYPE REF TO cl_gui_alv_grid.


TYPES: BEGIN OF ty_s_outtab.
INCLUDE TYPE knb1.
TYPES: END OF ty_s_outtab.

DATA:
  gs_outtab        TYPE ty_s_outtab,
  gt_outtab        TYPE STANDARD TABLE OF ty_s_outtab
                   WITH DEFAULT KEY.



*---------------------------------------------------------------------*
*       CLASS lcl_eventhandler DEFINITION
*---------------------------------------------------------------------*
*
*---------------------------------------------------------------------*
CLASS lcl_eventhandler DEFINITION.

  PUBLIC SECTION.

    CLASS-METHODS:
      handle_data_changed
        FOR EVENT data_changed OF cl_gui_alv_grid
        IMPORTING
          er_data_changed
          e_onf4
          e_onf4_before
          e_onf4_after
          e_ucomm
          sender,

      handle_data_changed_finished
        FOR EVENT data_changed_finished OF cl_gui_alv_grid
        IMPORTING
          e_modified
          et_good_cells.


ENDCLASS.                    "lcl_eventhandler DEFINITION


*---------------------------------------------------------------------*
*       CLASS lcl_eventhandler IMPLEMENTATION
*---------------------------------------------------------------------*
*
*---------------------------------------------------------------------*
CLASS lcl_eventhandler IMPLEMENTATION.

  METHOD handle_data_changed.
*   define local data


  ENDMETHOD.                    "handle_data_changed

  METHOD handle_data_changed_finished.
*   define local data
    DATA:
      ls_outtab      TYPE ty_s_outtab,
      ls_cell        TYPE lvc_s_modi.

    LOOP AT et_good_cells INTO ls_cell
                          WHERE ( fieldname = 'LOEVM' ).

      READ TABLE gt_outtab INTO ls_outtab INDEX ls_cell-row_id.
      "       Delete flag set
      IF ( ls_cell-value = abap_true ).
        ls_outtab-zuawa = space.


        "       Delete flag removed
      ELSE.
        ls_outtab-zuawa = '002'.
      ENDIF.

      MODIFY gt_outtab FROM ls_outtab INDEX ls_cell-row_id.
    ENDLOOP.

  ENDMETHOD.                    "handle_data_changed_finished

ENDCLASS.                    "lcl_eventhandler IMPLEMENTATION




START-OF-SELECTION.


  SELECT * FROM knb1 INTO TABLE gt_outtab UP TO 20 ROWS
    WHERE bukrs = '1000'.





* Create docking container
  CREATE OBJECT go_docking
    EXPORTING
      parent                      = cl_gui_container=>screen0
      ratio                       = 90
    EXCEPTIONS
      OTHERS                      = 6.
  IF sy-subrc <> 0.
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  ENDIF.


* Create ALV grid
  CREATE OBJECT go_grid
    EXPORTING
      i_parent          = go_docking
    EXCEPTIONS
      OTHERS            = 5.
  IF sy-subrc <> 0.
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  ENDIF.




* Build fieldcatalog
  PERFORM build_fieldcatalog.

  PERFORM set_layout.

  SET HANDLER:
    lcl_eventhandler=>handle_data_changed          FOR go_grid,
    lcl_eventhandler=>handle_data_changed_finished FOR go_grid.


* Display data
  CALL METHOD go_grid->set_table_for_first_display
    EXPORTING
      is_layout       = gs_layout
    CHANGING
      it_outtab       = gt_outtab
      it_fieldcatalog = gt_fcat
    EXCEPTIONS
      OTHERS          = 4.
  IF sy-subrc <> 0.
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  ENDIF.



* Link the docking container to the target dynpro
  gd_repid = syst-repid.
  CALL METHOD go_docking->link
    EXPORTING
      repid                       = gd_repid
      dynnr                       = '0100'
*      CONTAINER                   =
    EXCEPTIONS
      OTHERS                      = 4.
  IF sy-subrc <> 0.
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  ENDIF.


* ok-code field = GD_OKCODE
  CALL SCREEN '0100'.
* Flow logic (no elements on screen):
*  PROCESS BEFORE OUTPUT.
*    MODULE STATUS_0100.
**
*  PROCESS AFTER INPUT.
*    MODULE USER_COMMAND_0100.


END-OF-SELECTION.

*&---------------------------------------------------------------------*
*&      Module  STATUS_0100  OUTPUT
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
MODULE status_0100 OUTPUT.
  SET PF-STATUS 'STATUS_0100'.
*  SET TITLEBAR 'xxx'.

  CALL METHOD go_grid->refresh_table_display
*      EXPORTING
*        IS_STABLE      =
*        I_SOFT_REFRESH =
    EXCEPTIONS
      finished       = 1
      OTHERS         = 2.
  IF sy-subrc <> 0.
*     MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*                WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  ENDIF.

ENDMODULE.                 " STATUS_0100  OUTPUT

*&---------------------------------------------------------------------*
*&      Module  USER_COMMAND_0100  INPUT
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
MODULE user_command_0100 INPUT.

  TRANSLATE gd_okcode TO UPPER CASE.

* Fetch changes on ALV grid
  go_grid->check_changed_data( ).

  CASE gd_okcode.
    WHEN 'BACK' OR
         'END'  OR
         'CANC'.
      SET SCREEN 0. LEAVE SCREEN.


    WHEN OTHERS.
  ENDCASE.





  CLEAR: gd_okcode.

ENDMODULE.                 " USER_COMMAND_0100  INPUT


*&---------------------------------------------------------------------*
*&      Form  BUILD_FIELDCATALOG_KNB1
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
*  -->  p1        text
*  <--  p2        text
*----------------------------------------------------------------------*
FORM build_fieldcatalog .
* define local data
  DATA:
    ls_fcat        TYPE lvc_s_fcat.



  CALL FUNCTION 'LVC_FIELDCATALOG_MERGE'
    EXPORTING
*     I_BUFFER_ACTIVE              =
      i_structure_name             = 'KNB1'
*     I_CLIENT_NEVER_DISPLAY       = 'X'
*     I_BYPASSING_BUFFER           =
*     I_INTERNAL_TABNAME           =
    CHANGING
      ct_fieldcat                  = gt_fcat
    EXCEPTIONS
      inconsistent_interface       = 1
      program_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.




" Set all non-keyfields editable
  LOOP AT gt_fcat INTO ls_fcat
                  WHERE ( key = abap_false ).
    ls_fcat-edit    = abap_true.

    MODIFY gt_fcat FROM ls_fcat.
  ENDLOOP.


ENDFORM.                    " BUILD_FIELDCATALOG


*&---------------------------------------------------------------------*
*&      Form  SET_LAYOUT
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
*  -->  p1        text
*  <--  p2        text
*----------------------------------------------------------------------*
FORM set_layout .

  CLEAR: gs_layout.

  gs_layout-cwidth_opt = abap_true.
  gs_layout-zebra      = abap_true.

**  gs_layout-stylefname = 'CELLTAB'.

ENDFORM.                    " SET_LAYOUT

Regards

Uwe

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ALV: changing internal table in data_changed event.

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