OOABAP
Class: Class is one
type of user-define data type with Attributes, Methods, Events, and interface for
the application.
Ø
Type
of Class:
1. Local Class.
2. Global Class.
·
Local
Class: It can be define in an ABAP Program and can only use only with in
the program.
·
Global
Class: It can be define globally it can access all the ABAP program in SAP
system BUT it Created T-Code: SE24.
v
How we
create class and define a class.
When we create a class there is a two section
1. Definition.
2. Implementation.
ü
How to
Define Class and Method.
CLASS <class name> DEFINITION.
…..
END CLASS.
***************************************************
* START *
***************************************************
CLASS CL_TEST DEFINITION.
PUBLIC SECTION.
DATA : LV_NAME TYPE CHAR30.
METHODS: SHOW_NAME.
PROTECTED SECTION.
“No Declarations.
PRIVATE
SECTION.
“No Declarations.
END CLASS.
***************************************************
* END *
***************************************************
ü How to Implementation
Class and Method.
CLASS <class name> IMPLEMENTATION.
………
END CLASS.
***************************************************
* START *
***************************************************
CLASS CL_TEST IMPLEMENTATION.
METHOD SHOW_NAME.
WRITE: / ‘This
is the SHOW_NAME Method’.
WRITE: /5
LV_NAME.
ENDMETHOS.
END CLASS.
**************************************************
* END *
**************************************************
Structure of Class
Components of a Class:
1. Attributes
·
Static
Attributes
·
Instance
Attributes
2. Methods
·
Static
Methods
·
Instance
Methods
3. Events
4. Interfaces
********************************************
*REPORT USING OO ABAP *
********************************************
Report: YRAM_OOABAP1
======================================================
Project: SAP Object Oriented ABAP
Description: Displaying the name by using OO
ABAP
======================================================
REPORT yram_ooabap1.
CLASS lcl_class
DEFINITION.
PUBLIC SECTION.
** Declaration of Instance Variable
DATA: lv_name TYPE char20 VALUE.
** Declaration of Instance Method
METHODS:
show_name.
PROTECTED SECTION.
"No
Declaratons
PRIVATE SECTION.
"No
Declaratons
ENDCLASS.
*************************************************
* Class Implementation *
*************************************************
CLASS lcl_class IMPLEMENTATION.
** Implementation of method
METHOD show_name.
WRITE:
/ 'This is the SHOW_NAME method'.
WRITE: /5 lv_name. “Public Variable
ENDMETHOD.
ENDCLASS.
**************************************************
* START of TREATMENT *
**************************************************
START-OF-SELECTION.
** Declaration of Object
DATA: obj1 TYPE REF
TO lcl_class.
**Creation of the Object
CREATE OBJECT obj1.
** Calling the method
CALL METHOD
obj1->show_name.
