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about events

Hi,

what happen if events not sequnced in the order.

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  • Best Answer
    author's profile photo Former Member
    Former Member
    Posted on Nov 21, 2007 at 10:03 AM

    HI

    ABAP PROGRAMINING IS A EVENT TRIGGER PROGRAMING WHERE FOR EVERY ACTION YOU DO THERE WILL BE AN EVENT TRIGGERS

    SO IT NOT ALLWAYS DEPENDS ON YOUR ORDER OF THE EVENTS , IT ALL WAYS DEPENDS ON THE ACTION YOU DONE

    SEE THIS EXAMPLE IN THIS THE EVENTS ARE IN NOT ORDER STILL THEY EXECUTE ACORDING TO THE ACTION YOU DONE

    HERE IN THIS EXAMPLE TOP-OF-PAGE THERE IS IN ABOVE START-OF-SELECTION AND INITIALIZATION IS AT THE END OF THE REPORT

    REPORT  ZNNR_REPORT NO STANDARD PAGE HEADING MESSAGE-ID ZNNR LINE-SIZE 100 LINE-COUNT 65(4).
    
    *******DATA DECLARATIONS***********
    DATA : BEGIN OF IT_PLANT OCCURS 0,
            MATNR LIKE MARA-MATNR,
            WERKS LIKE MARC-WERKS,
            PSTAT LIKE MARC-PSTAT,
            EKGRP LIKE MARC-EKGRP,
           END OF IT_PLANT.
    
    DATA : BEGIN OF IT_PONO OCCURS 0,
            EBELN LIKE EKKO-EBELN,
            EBELP LIKE EKPO-EBELP,
            MATNR LIKE EKPO-MATNR,
            WERKS LIKE EKPO-WERKS,
            LGORT LIKE EKPO-LGORT,
           END OF IT_PONO.
    
    TABLES EKKO.
    *********END OF DATA DECLARATIONS**********
    
    ********SELECTION SCREEN DESIGN ***********
    
    SELECTION-SCREEN BEGIN OF BLOCK B1 WITH FRAME TITLE TEXT-001.
    
    PARAMETER : P_WERKS LIKE MARC-WERKS MODIF ID S1.
    SELECT-OPTIONS : S_EBELN FOR EKKO-EBELN NO INTERVALS MODIF ID S2.
    
    SELECTION-SCREEN END OF BLOCK B1.
    
    SELECTION-SCREEN BEGIN OF BLOCK B2 WITH FRAME TITLE TEXT-004.
    
    SELECTION-SCREEN BEGIN OF LINE.
    PARAMETERS : R1 RADIOBUTTON GROUP G1 DEFAULT 'X'.
    SELECTION-SCREEN COMMENT 5(20) TEXT-002 FOR FIELD R1.
    SELECTION-SCREEN END OF LINE.
    
    SELECTION-SCREEN BEGIN OF LINE.
    PARAMETERS : R2 RADIOBUTTON GROUP G1.
    SELECTION-SCREEN COMMENT 5(20) TEXT-003 FOR FIELD R2.
    SELECTION-SCREEN END OF LINE.
    
    SELECTION-SCREEN END OF BLOCK B2.
    
    
    *******END OF SELECTION SCREEN DESIGN*****************
    
    ************SCREEN MODIFICATIONS********************
    
    AT SELECTION-SCREEN OUTPUT.
    
      LOOP AT SCREEN.
    
        IF R1 EQ 'X' AND SCREEN-GROUP1 EQ 'S2'.
          SCREEN-INPUT = 0.
          MODIFY SCREEN.
        ENDIF.
    
        IF R2 EQ 'X' AND SCREEN-GROUP1 EQ 'S1'.
          SCREEN-INPUT = 0.
          MODIFY SCREEN.
        ENDIF.
    
      ENDLOOP.
    
    
    
    *********END OF SCREEN MODIFICATIONS******************
    
    ***************SCREEN VALIDATIONS *****************
    at selection-screen.
      SELECT SINGLE *
               FROM EKKO
               INTO EKKO
               WHERE EBELN IN S_EBELN.
    
      IF SY-SUBRC <> 0.
        SET CURSOR FIELD 'S_EBELN-LOW'.
        MESSAGE E999 WITH TEXT-005.
        clear S_ebeln-low.
      ENDIF.
    *********end of screen validation******************
    
    TOP-OF-PAGE.
    
      IF R1 EQ 'X'.
    
    *ULINE AT /1(48).
    
        WRITE : SY-VLINE ,2 'MATERIAL NUMBER',
                21 SY-VLINE , 22 'PLANT',
                27 SY-VLINE , 28 'STATUS',
                43 SY-VLINE , 44 'GRUP', 48 SY-VLINE.
    
        ULINE AT /1(48).
    
      ENDIF.
    
      IF R2 EQ 'X'.
    
        WRITE : SY-VLINE , 2 'PO NUMBER',
               12 SY-VLINE, 13 'ITEM',
               18 SY-VLINE,19 'MATERIAL NUMBER',
               37 SY-VLINE, 38 'PLANT',
               44 SY-VLINE, 45 'GRUP',
               49 SY-VLINE.
        ULINE AT /1(50).
      ENDIF.
    
    
    START-OF-SELECTION.
    *set pf-status '100'.
      IF R1 EQ 'X'.
    
        SELECT MATNR
               WERKS
               PSTAT
               EKGRP
           FROM MARC
           INTO TABLE IT_PLANT
           WHERE WERKS = P_WERKS.
    
        LOOP AT IT_PLANT.
    
    
          WRITE : SY-VLINE , 2 IT_PLANT-MATNR COLOR COL_KEY,
                 21 SY-VLINE , 22  IT_PLANT-WERKS COLOR COL_KEY,
                 27 SY-VLINE ,28 IT_PLANT-PSTAT COLOR COL_NORMAL,
                 43 SY-VLINE ,44 IT_PLANT-EKGRP COLOR COL_NORMAL.
    
    
        ENDLOOP.
    
      ENDIF.
    
      IF R2 EQ 'X'.
    
        SELECT EBELN EBELP MATNR WERKS LGORT
               FROM EKPO
               INTO TABLE IT_PONO
               WHERE EBELN IN S_EBELN.
    
        LOOP AT IT_PONO.
    
          WRITE : SY-VLINE , 2 IT_PONO-EBELN COLOR COL_KEY,
                 12 SY-VLINE , 13 IT_PONO-EBELP COLOR COL_KEY,
                 18 SY-VLINE , 19 IT_PONO-MATNR COLOR COL_NORMAL,
                 37 SY-VLINE , 38 IT_PONO-WERKS COLOR COL_NORMAL,
                 44 SY-VLINE , 45 IT_PONO-LGORT COLOR COL_NORMAL, 49 SY-VLINE..
        ENDLOOP.
      ENDIF.
    
    
    
      ULINE AT /1(50).
      WRITE :/10 'PAGE NUMBER', SY-PAGNO, '/' ,SY-PAGNO.
    
    
    END-OF-PAGE.
    
      ULINE AT /1(50).
      WRITE :/10 'PAGE NUMBER', SY-PAGNO.
    
    
    **********INITIALIZATION OF SELECTION SCREEN ELEMENTS.******
    
    INITIALIZATION.
    
    P_WERKS = '1000'.
    
    *S_EBELN-LOW = '4500016926'.
    *S_EBELN-OPTION = 'EQ'.
    *S_EBELN-SIGN = 'I'.
    *APPEND S_EBELN.
    *CLEAR S_EBELN.
    
    *************END OF INITIALIZATION************************

    FINALLY ORDER OF EVENTS DON'T EFECT THE PROGRAM , ALL WAYS EVENTS TRIGGERS BASED ON OUR ACTION

    REWARD IF USEFULL

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  • author's profile photo Former Member
    Former Member
    Posted on Nov 21, 2007 at 08:26 AM

    HI

    Nothing will happen

    it won't matter in which order we wrote the events , acording to the user action the evnts will be triggers

    suppose if you write INITIALIZATION event in the last coloum of the report then after you click on execute button the event INITIALIZATION only triggers

    and after every new event the previous event will end

    <b>Reward if usefull</b>

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