Debugging scenarios for practice

Question

hiee folks,,
Please provide any links or documents which demonstrates run time debugging scenarios..
thanks,
darshan panchal.

Answer 1

Hi,
copy and paste this below simple program
*Type pools for alv
TYPE-POOLS : slis.
*structure for t582a tbale
TYPES : BEGIN OF ty_table,
        infty TYPE infty,
        pnnnn TYPE pnnnn_d,
        zrmkz TYPE dzrmkz,
        zeitb TYPE dzeitb,
        dname TYPE dianm,
         davo TYPE davo,
        davoe TYPE davoe,
        END OF ty_table.
*Structure for infotype text
TYPES : BEGIN OF ty_itext,
        infty TYPE infty,
        itext TYPE intxt,
        sprsl TYPE sprsl,
        END OF ty_itext.
*Structure for output display
TYPES : BEGIN OF ty_output,
        infty TYPE infty,
        itext TYPE intxt,
        pnnnn TYPE pnnnn_d,
        zrmkz TYPE dzrmkz,
        zeitb TYPE dzeitb,
        dname TYPE dianm,
        davo TYPE davo,
        davoe TYPE davoe,
       END OF ty_output.
*internal table and work area declarations
DATA : it_table TYPE STANDARD TABLE OF ty_table INITIAL SIZE 0,
       it_output TYPE STANDARD TABLE OF ty_output INITIAL SIZE 0,
       it_pbo TYPE STANDARD TABLE OF ty_output INITIAL SIZE 0,
       it_ittext TYPE STANDARD TABLE OF ty_itext INITIAL SIZE 0,
       wa_table TYPE ty_table,
       wa_output TYPE ty_output,
       wa_ittext TYPE ty_itext.
*Data declarations for dropdown lists for f4
DATA: it_dropdown TYPE lvc_t_drop,
      ty_dropdown TYPE lvc_s_drop,
*data declaration for refreshing of alv
      stable TYPE lvc_s_stbl.
*Global variable declaration
DATA: gstring TYPE c.
*Data declarations for ALV
DATA: c_ccont TYPE REF TO cl_gui_custom_container,         "Custom container object
      c_alvgd         TYPE REF TO cl_gui_alv_grid,         "ALV grid object
      it_fcat            TYPE lvc_t_fcat,                  "Field catalogue
      it_layout          TYPE lvc_s_layo.                  "Layout
*ok code declaration
DATA:
  ok_code       TYPE ui_func.
*initialization event
INITIALIZATION.
*start of selection event
START-OF-SELECTION.
*select the infotypes maintained
  SELECT infty
          pnnnn
          zrmkz
          zeitb
          dname
          davo
          davoe
          FROM t582a UP TO 10 ROWS
          INTO CORRESPONDING FIELDS OF TABLE it_table.
* *Select the infotype texts
  IF it_table[] IS NOT INITIAL.
    SELECT itext
             infty
             sprsl
             FROM t582s
             INTO CORRESPONDING FIELDS OF TABLE it_ittext
             FOR ALL ENTRIES IN it_table
             WHERE infty = it_table-infty
             AND sprsl = 'E'.
  ENDIF.
*Apppending the data to the internal table of ALV output
  LOOP AT it_table INTO wa_table.
    wa_output-infty = wa_table-infty.
    wa_output-pnnnn = wa_table-pnnnn.
    wa_output-zrmkz = wa_table-zrmkz.
    wa_output-zeitb = wa_table-zeitb.
    wa_output-dname = wa_table-dname.
    wa_output-davo = wa_table-davo.
    wa_output-davoe = wa_table-davoe.
* For texts
    READ TABLE it_ittext INTO wa_ittext WITH KEY infty = wa_table-infty.
    wa_output-itext = wa_ittext-itext.
    APPEND wa_output TO it_output.
    CLEAR wa_output.
  ENDLOOP.
* Calling the ALV screen with custom container
  CALL SCREEN 0600.
*On this statement double click  it takes you to the screen painter SE51.
*Enter the attributes
*Create a Custom container and name it CCONT and OK code as OK_CODE.
*Save check and Activate the screen painter.
*Now a normal screen with number 600 is created which holds the ALV grid.
* PBO of the actual screen ,
* Here we can give a title and customized menus
*create 2 buttons with function code 'SAVE' and 'EXIT'.
* GIVE A SUITABLE TITLE
*&      Module  STATUS_0600  OUTPUT
*       text
MODULE status_0600 OUTPUT.
  SET PF-STATUS 'DISP'.
  SET TITLEBAR 'ALVF4'.
ENDMODULE.                 " STATUS_0600  OUTPUT
* calling the PBO module ALV_GRID.
*&      Module  PBO  OUTPUT
*       text
MODULE pbo OUTPUT.
*Creating objects of the container
  CREATE OBJECT c_ccont
       EXPORTING
          container_name = 'CCONT'.
*  create object for alv grid
  create object c_alvgd
  exporting
  i_parent = c_ccont.
*  SET field for ALV
  PERFORM alv_build_fieldcat.
* Set ALV attributes FOR LAYOUT
  PERFORM alv_report_layout.
  CHECK NOT c_alvgd IS INITIAL.
* Call ALV GRID
  CALL METHOD c_alvgd->set_table_for_first_display
    EXPORTING
      is_layout                     = it_layout
      i_save                        = 'A'
    CHANGING
      it_outtab                     = it_output
      it_fieldcatalog               = it_fcat
    EXCEPTIONS
      invalid_parameter_combination = 1
      program_error                 = 2
      too_many_lines                = 3
      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.
ENDMODULE.                 " PBO  OUTPUT
*&      Form  alv_build_fieldcat
*       text
*      <--P_IT_FCAT  text
*subroutine to build fieldcat
FORM alv_build_fieldcat.
  DATA lv_fldcat TYPE lvc_s_fcat.
  CLEAR lv_fldcat.
  lv_fldcat-row_pos   = '1'.
  lv_fldcat-col_pos   = '1'.
  lv_fldcat-fieldname = 'INFTY'.
  lv_fldcat-tabname   = 'IT_OUTPUT'.
  lv_fldcat-outputlen = 8.
  lv_fldcat-scrtext_m = 'Infotype'.
  lv_fldcat-icon = 'X'.
  APPEND lv_fldcat TO it_fcat.
  CLEAR lv_fldcat.
  lv_fldcat-row_pos   = '1'.
  lv_fldcat-col_pos   = '2'.
  lv_fldcat-fieldname = 'PNNNN'.
  lv_fldcat-tabname   = 'IT_OUTPUT'.
  lv_fldcat-outputlen = 15.
  lv_fldcat-scrtext_m = 'Structure'.
  lv_fldcat-icon = ''.
  APPEND lv_fldcat TO it_fcat.
  CLEAR lv_fldcat.
  lv_fldcat-row_pos   = '1'.
  lv_fldcat-col_pos   = '3'.
  lv_fldcat-fieldname = 'ITEXT'.
  lv_fldcat-tabname   = 'IT_OUTPUT'.
  lv_fldcat-outputlen = 60.
  lv_fldcat-scrtext_m = 'Description'.
  lv_fldcat-icon = ''.
  APPEND lv_fldcat TO it_fcat.
  CLEAR lv_fldcat.
  lv_fldcat-row_pos   = '1'.
  lv_fldcat-col_pos   = '5'.
  lv_fldcat-fieldname = 'ZRMKZ'.
  lv_fldcat-tabname   = 'IT_OUTPUT'.
  lv_fldcat-outputlen = 1.
  lv_fldcat-scrtext_m = 'PERIOD'.
  lv_fldcat-icon = ''.
  APPEND lv_fldcat TO it_fcat.
  CLEAR lv_fldcat.
  lv_fldcat-row_pos   = '1'.
  lv_fldcat-col_pos   = '6'.
  lv_fldcat-fieldname = 'ZEITB'.
  lv_fldcat-tabname   = 'IT_OUTPUT'.
  lv_fldcat-outputlen = 5.
  lv_fldcat-scrtext_m = 'Time constraint'.
  lv_fldcat-edit = 'X'.
*To avail the existing F4 help these are to
*be given in the field catalogue
  lv_fldcat-f4availabl = 'X'.
  lv_fldcat-ref_table = 'T582A'.
  lv_fldcat-ref_field = 'ZEITB'.
  APPEND lv_fldcat TO it_fcat.
  CLEAR lv_fldcat.
  lv_fldcat-row_pos   = '1'.
  lv_fldcat-col_pos   = '7'.
  lv_fldcat-fieldname = 'DNAME'.
  lv_fldcat-tabname   = 'IT_OUTPUT'.
  lv_fldcat-outputlen = 15.
  lv_fldcat-scrtext_m = 'Dialogmodule'.
  lv_fldcat-icon = ''.
  APPEND lv_fldcat TO it_fcat.
  CLEAR lv_fldcat.
  lv_fldcat-row_pos   = '1'.
  lv_fldcat-col_pos   = '8'.
  lv_fldcat-fieldname = 'DAVO'.
  lv_fldcat-tabname   = 'IT_OUTPUT'.
  lv_fldcat-outputlen = 15.
  lv_fldcat-scrtext_m = 'Start'.
  lv_fldcat-edit = 'X'.
  APPEND lv_fldcat TO it_fcat.
  CLEAR lv_fldcat.
  lv_fldcat-row_pos   = '1'.
  lv_fldcat-col_pos   = '9'.
  lv_fldcat-fieldname = 'DAVOE'.
  lv_fldcat-tabname   = 'IT_OUTPUT'.
  lv_fldcat-outputlen = 15.
  lv_fldcat-scrtext_m = 'End'.
  lv_fldcat-icon = ''.
  APPEND lv_fldcat TO it_fcat.
  CLEAR lv_fldcat.
*To create drop down for the field 'DAVO'
* with our own f4 help
  ty_dropdown-handle = '1'.
  ty_dropdown-value = ' '.
  APPEND ty_dropdown TO it_dropdown.
  ty_dropdown-handle = '1'.
  ty_dropdown-value = '1'.
  APPEND ty_dropdown TO it_dropdown.
  ty_dropdown-handle = '1'.
  ty_dropdown-value = '2'.
  APPEND ty_dropdown TO it_dropdown.
  ty_dropdown-handle = '1'.
  ty_dropdown-value = '3'.
  APPEND ty_dropdown TO it_dropdown.
  CALL METHOD c_alvgd->set_drop_down_table
    EXPORTING
      it_drop_down = it_dropdown.
  LOOP AT it_fcat INTO lv_fldcat.
    CASE lv_fldcat-fieldname.
** To assign dropdown in the fieldcataogue
      WHEN 'DAVO'.
        lv_fldcat-drdn_hndl = '1'.
        lv_fldcat-outputlen = 15.
        MODIFY it_fcat FROM lv_fldcat.
    ENDCASE.
  ENDLOOP.
ENDFORM.                    " alv_build_fieldcat
*&      Form  alv_report_layout
*       text
*      <--P_IT_LAYOUT  text
*Subroutine for setting alv layout
FORM alv_report_layout.
  it_layout-cwidth_opt = 'X'.
  it_layout-col_opt = 'X'.
  it_layout-zebra = 'X'.
ENDFORM.                    " alv_report_layout
* PAI module of the screen created. In case we use an interactive ALV or
*for additional functionalities we can create OK codes
*and based on the user command we can do the coding.
*&      Module  PAI  INPUT
*       text
MODULE pai INPUT.
*To change the existing values and refresh the grid
*And only values in the dropdown or in the default
*F4 can be given , else no action takes place for the dropdown
*and error is thrown for the default F4 help and font changes to red
*and on still saving, value is not changed
  c_alvgd->check_changed_data( ).
*Based on the user input
*When user clicks 'SAVE;
  CASE ok_code.
    WHEN 'SAVE'.
*A pop up is called to confirm the saving of changed data
      CALL FUNCTION 'POPUP_TO_CONFIRM'
        EXPORTING
          titlebar       = 'SAVING DATA'
          text_question  = 'Continue?'
          icon_button_1  = 'icon_booking_ok'
        IMPORTING
          answer         = gstring
        EXCEPTIONS
          text_not_found = 1
          OTHERS         = 2.
      IF sy-subrc NE 0.
*       MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*               WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
      ENDIF.
*When the User clicks 'YES'
      IF ( gstring = '1' ).
        MESSAGE 'Saved' TYPE 'S'.
*Now the changed data is stored in the it_pbo internal table
        it_pbo = it_output.
*Subroutine to display the ALV with changed data.
        PERFORM redisplay.
      ELSE.
*When user clicks NO or Cancel
        MESSAGE 'Not Saved'  TYPE 'S'.
      ENDIF.
**When the user clicks the 'EXIT; he is out
    WHEN 'EXIT'.
      LEAVE PROGRAM.
  ENDCASE.
  CLEAR: ok_code.
ENDMODULE.                 " PAI  INPUT
*&      Form  REDISPLAY
*       text
*  -->  p1        text
*  <--  p2        text
FORM redisplay .
*Cells of the alv are made non editable after entering OK to save
  CALL METHOD c_alvgd->set_ready_for_input
    EXPORTING
      i_ready_for_input = 0.
*Row and column of the alv are refreshed after changing values
  stable-row = 'X'.
  stable-col = 'X'.
*REfreshed ALV display with the changed values
*This ALV is non editable and contains new values
  CALL METHOD c_alvgd->refresh_table_display
    EXPORTING
      is_stable = stable
    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.
ENDFORM.                    " REDISPLAY
Execute it and after that, in entry tab, press /h and execute it..
Regards,
Kiran