topic Re: Can anyone guide me for Object Oriented programming in ABAP in Application Development and Automation Discussions

Can anyone guide me for Object Oriented programming in ABAP

Former Member — Tue, 05 Aug 2008 05:51:20 GMT

Hi Guru's,

I am new to Object oriented programming. I need to work on OOP's using ALV anyone provide me the guidence and also the material.

Thanks in Advance.

Re: Can anyone guide me for Object Oriented programming in ABAP

Former Member — Tue, 05 Aug 2008 05:54:03 GMT

Hi!

Check the wiki section of SDN. You'll get lots of material on ABAP OBJECTS, ALVs.

You can check my sample code. Here I have created an ALV using ABAP OBJECT concept. Before executing this program create a screen


REPORT  z_alv1.

DATA:
  w_carrid TYPE sflight-carrid,
  w_connid TYPE sflight-connid.

DATA:
  r_cont TYPE REF TO cl_gui_custom_container,
  r_grid TYPE REF TO cl_gui_alv_grid.

DATA:
  t_fieldcat TYPE lvc_t_fcat,
  fs_fieldcat LIKE LINE OF t_fieldcat.

TYPES:
  BEGIN OF types_flight,
    carrid   TYPE sflight-carrid,
    connid   TYPE sflight-connid,
    fldate   TYPE sflight-fldate,
    price    TYPE sflight-price,
    currency TYPE sflight-currency,
  END OF types_flight.

DATA:
  fs_flight TYPE types_flight,
  t_flight LIKE
     TABLE OF
           fs_flight.

SELECT-OPTIONS:
  s_carrid FOR w_carrid,
  s_connid FOR w_connid.


START-OF-SELECTION.

  PERFORM get_data.
  CALL SCREEN '0100'.

*&---------------------------------------------------------------------
*
*&      Form  get_data
*&---------------------------------------------------------------------
*
*       text
*----------------------------------------------------------------------
*
*  -->  p1        text
*  <--  p2        text
*----------------------------------------------------------------------
*
FORM get_data .
  SELECT carrid
         connid
         fldate
         price
         currency
    FROM sflight
    INTO TABLE t_flight
   WHERE carrid IN s_carrid
     AND connid IN s_connid.


ENDFORM.                    " get_data
*&---------------------------------------------------------------------
*
*&      Module  STATUS_0100  OUTPUT
*&---------------------------------------------------------------------
*
*       text
*----------------------------------------------------------------------
*
MODULE status_0100 OUTPUT.
  SET PF-STATUS 'STATUS1'.
  SET TITLEBAR 'TITLE1'.
ENDMODULE.                 " STATUS_0100  OUTPUT
*&---------------------------------------------------------------------
*
*&      Module  USER_COMMAND_0100  INPUT
*&---------------------------------------------------------------------
*
*       text
*----------------------------------------------------------------------
*
MODULE user_command_0100 INPUT.

  CASE sy-ucomm.
    WHEN 'BACK'.
      LEAVE TO SCREEN '0'.
  ENDCASE.

ENDMODULE.                 " USER_COMMAND_0100  INPUT
*&---------------------------------------------------------------------
*
*&      Module  alv_grid  OUTPUT
*&---------------------------------------------------------------------
*
*       text
*----------------------------------------------------------------------
*
MODULE alv_grid OUTPUT.
  CREATE OBJECT r_cont
    EXPORTING

      container_name              = 'CONTAINER_1'
    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 OBJECT r_grid
    EXPORTING
      i_parent          = r_cont
    EXCEPTIONS
      OTHERS            = 5
      .
  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.

  PERFORM build_fieldcat.

  CALL METHOD r_grid->set_table_for_first_display
    CHANGING
      it_outtab                     = t_flight
      it_fieldcatalog               = t_fieldcat
*      IT_SORT                       =
*      IT_FILTER                     =
    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.

ENDMODULE.                 " alv_grid  OUTPUT
*&---------------------------------------------------------------------
*
*&      Form  build_fieldcat
*&---------------------------------------------------------------------
*
*       text
*----------------------------------------------------------------------
*
*  -->  p1        text
*  <--  p2        text
*----------------------------------------------------------------------
*
FORM build_fieldcat .
  fs_fieldcat-fieldname = 'CARRID'.
  fs_fieldcat-tabname   = 'T_FLIGHT'.
  fs_fieldcat-scrtext_m = 'Airline Carrier ID'.
  APPEND fs_fieldcat TO t_fieldcat.

  CLEAR fs_fieldcat.
  fs_fieldcat-fieldname = 'CONNID'.
  fs_fieldcat-tabname   = 'T_FLIGHT'.
  fs_fieldcat-lzero     = ''.
  fs_fieldcat-scrtext_m = 'Flight Conn ID'.
  APPEND fs_fieldcat TO t_fieldcat.

  CLEAR fs_fieldcat.
  fs_fieldcat-fieldname = 'FLDATE'.
  fs_fieldcat-tabname   = 'T_FLIGHT'.
  fs_fieldcat-scrtext_m = 'Flight Date'.
  APPEND fs_fieldcat TO t_fieldcat.

  CLEAR fs_fieldcat.
  fs_fieldcat-fieldname = 'PRICE'.
  fs_fieldcat-tabname   = 'T_FLIGHT'.
  fs_fieldcat-scrtext_m = 'Price'.
  APPEND fs_fieldcat TO t_fieldcat.

  CLEAR fs_fieldcat.
  fs_fieldcat-fieldname = 'CURRENCY'.
  fs_fieldcat-tabname   = 'T_FLIGHT'.
  fs_fieldcat-scrtext_m = 'Currency'.
  APPEND fs_fieldcat TO t_fieldcat.

ENDFORM.                    " build_fieldcat

Regards

Abhijeet

Re: Can anyone guide me for Object Oriented programming in ABAP

Former Member — Tue, 05 Aug 2008 06:23:06 GMT

hi,

Please Refer to the link.

http://www.sap-partner.hu/ABAP_HELP_INFO/An%20Easy%20Reference%20for%20ALV%20Grid%20Control.pdf

Regards

Sumit agarwal

Re: Can anyone guide me for Object Oriented programming in ABAP

Former Member — Tue, 05 Aug 2008 06:24:55 GMT

Hi,

The main advantages of OOABAP is :

1. Ensapulation - data hiding .

2. Polymorphism - changing the method process in different classes.

3. Inheritance - adding the functionality of one class(super Class) to another. (subclass).

REPORT ZCLASS_FIRST.

----

CLASS c_counter DEFINITION

----

CLASS C_COUNTER DEFINITION.

PUBLIC SECTION.

*instance method declaration

METHODS: SET_COUNTER IMPORTING VALUE(SET_VALUE) TYPE I,

GET_COUNTER EXPORTING VALUE(GET_VALUE) TYPE I.

*static method declaration

CLASS-METHODS : INCREMENT_COUNTER.

PRIVATE SECTION.

*static variable declaration

CLASS-DATA COUNT TYPE I.

ENDCLASS. "c_counter DEFINITION

----

CLASS c_counter IMPLEMENTATION

----

CLASS C_COUNTER IMPLEMENTATION.

*instance method implement

METHOD SET_COUNTER.

COUNT = SET_VALUE.

ENDMETHOD. "set_counter

*static method implement

METHOD INCREMENT_COUNTER.

ADD 1 TO COUNT.

ENDMETHOD. "increment_counter

*instance method implement

METHOD GET_COUNTER.

GET_VALUE = COUNT .

ENDMETHOD. "get_counter

ENDCLASS. "c_counter IMPLEMENTATION

*actual program start

START-OF-SELECTION.

creating an referance variable

DATA : C_COUNT_REF TYPE REF TO C_COUNTER.

creating an object based on referance variable.

CREATE OBJECT C_COUNT_REF.

*data declaration

DATA : TEMP1 TYPE I VALUE 100,

TEMP2 TYPE I .

*instance method calling

CALL METHOD C_COUNT_REF->SET_COUNTER

EXPORTING

SET_VALUE = TEMP1.

WRITE : TEMP1.

*static method calling

DO 10 TIMES.

CALL METHOD c_counter=>INCREMENT_COUNTER.

ENDDO.

*instance method calling

CALL METHOD C_COUNT_REF->GET_COUNTER

IMPORTING

GET_VALUE = TEMP2.

WRITE 😕 'Total value is:',TEMP2.

Goo through this Example U can get some basic idea of OOABAP...

I hope help full

Raghunath.S

Re: Can anyone guide me for Object Oriented programming in ABAP

Former Member — Tue, 05 Aug 2008 06:27:36 GMT

refer to the link below for Object Oriented ALV:

http://sap.niraj.tripod.com/id64.html

With luck,

Pritam.

Re: Can anyone guide me for Object Oriented programming in ABAP

Former Member — Tue, 05 Aug 2008 06:30:40 GMT

Hi,

Check the link(From page 1291)

http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCABA/BCABA.pdf

Also check this links as well.

http://help.sap.com/saphelp_nw2004s/helpdata/en/ce/b518b6513611d194a50000e8353423/frameset.htm

http://www.sapgenie.com/abap/OO/

http://www.futureobjects.de/content/intro_oo_e.html

http://www.sap-img.com/abap/business-add-in-you-need-to-understand-abap-oo-interface-concept.htm

Re: Can anyone guide me for Object Oriented programming in ABAP

Former Member — Tue, 05 Aug 2008 06:31:13 GMT

Praveen,

Just refer:

[Please|https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/b6cae890-0201-0010-ef8b-f970a9c41d47]

[Try to use|https://www.sdn.sap.com/irj/sdn/weblogs?blog=/pub/wlg/1606] [original link is broken] [original link is broken] [original link is broken];

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