Object Oriented ABAP

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Demo program illustrating Simple class and Super class *&---------------------------------------------------------------------* *& Report Z_OO<strong>ABAP</strong>18 * *& * *&---------------------------------------------------------------------* *& * *& * *&---------------------------------------------------------------------* REPORT Z_OO<strong>ABAP</strong>18 . CLASS lcl_employee DEFINITION. PUBLIC SECTION. *-------------------------------------------------------------------- * The public section is accesible from outside *-------------------------------------------------------------------- TYPES: BEGIN OF t_employee, no TYPE i, name TYPE string, END OF t_employee. METHODS: constructor IMPORTING im_employee_no TYPE i im_employee_name TYPE string, display_employee. * Class methods are global for all instances CLASS-METHODS: display_no_of_employees. PROTECTED SECTION. *-------------------------------------------------------------------- * The protected section is accessible from the class and its subclasses *-------------------------------------------------------------------- * Class data are global for all instances CLASS-DATA: g_no_of_employees TYPE i. PRIVATE SECTION. *-------------------------------------------------------------------- * The private section is only accessible from within the classs *-------------------------------------------------------------------- DATA: g_employee TYPE t_employee. ENDCLASS. *--- LCL Employee - Implementation CLASS lcl_employee IMPLEMENTATION. METHOD constructor. g_employee-no = im_employee_no. g_employee-name = im_employee_name. g_no_of_employees = g_no_of_employees + 1. ENDMETHOD. METHOD display_employee. WRITE:/ 'Employee', g_employee-no, g_employee-name. ENDMETHOD. METHOD display_no_of_employees.
WRITE: / 'Number of employees is:', g_no_of_employees. ENDMETHOD. ENDCLASS. ************************************************************************ * R E P O R T ********************************************************************* DATA: g_employee1 TYPE REF TO lcl_employee, g_employee2 TYPE REF TO lcl_employee. START-OF-SELECTION. CREATE OBJECT g_employee1 EXPORTING im_employee_no = 1 im_employee_name = 'Vikram.C'. CREATE OBJECT g_employee2 EXPORTING im_employee_no = 2 im_employee_name = 'Raghava.V'. CALL METHOD g_employee1->display_employee. CALL METHOD g_employee2->display_employee.
Page 1 and 2: Object Oriented ABAP From SAP Techn
Page 3 and 4: combines the character to the respe
Page 5 and 6: Data declared in public section can
Page 7 and 8: Single Inheriting: Acquiring the pr
Page 9 and 10: Multiple Inheritance is not support
Page 11 and 12: Object oriented programming (OOP) e
Page 13 and 14: For withdraw we define an exception
Page 15 and 16: Click SET_BALANCE. Write the NEW_BA
Page 17: selection-screen begin of block a.
Page 21 and 22: ENDMETHOD. METHOD display_no_of_emp
Page 23 and 24: * Object references o_bluecollar_em
Page 25 and 26: * Adds a new employee to the list o
Page 27 and 28: l_wage = monthly_salary - monthly_d
Page 29 and 30: Press Save button. Then we can view
Page 31 and 32: And double click on the method sele
Page 33 and 34: Provide the logic. Then save it, ch
Page 35 and 36: Working with the Keyword SUPER in o
Page 37 and 38: Save it. Then we can see the method
Page 39: *Create the object CREATE OBJECT OB
Page 42: WRITE:/ 'THIS IS MM1 METHOD IN SUPE
Page 45 and 46: SKIP 2. CALL METHOD OBJ->ANOTHER. S
Page 47 and 48: Then save it, check it, activate it
Page 49 and 50: *create the object START-OF-SELECTI
Page 51 and 52: Working with import, export and cha
Page 53 and 54: Press F5
Page 55 and 56: The values are changed. Press F5. T
Page 57 and 58: POLYMORPHISM:- Working on Polymorph
Page 59 and 60: Select display method then provide
Page 61 and 62: Select select _ method then press t
Page 63 and 64: Double click on the method then pro
Page 65 and 66: Go to TCode SE24. Enhancement of a
Page 67 and 68: Enter the Source code. Click on Sav
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Paste the Below Code. *&-----------
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4. How does it integrate? The Class
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10. Conventions for Components: Met
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The ZCL_TEST class now contains the
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An example to show how to define At
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The FIND_BY_LPOR method should alwa
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If we do not need the method in our
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21. BI_OBJECT~RELEASE Method: The s
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BOR objects Exceptions: Object is t
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Provide parameters also for this me
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Save & activate. Following screen a
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INTO TABLE IT_LFA1 WHERE LIFNR BETW
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The output is like this.
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Save it. Provide the method name. P
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Save it. Go to interface tab. Provi
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Provide the code. *&---------------
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IT_MARA TYPE Z_MARA, WA_MARA TYPE M
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Following pop-up appears: Enter you
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Create Transaction for local class
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transaction and execute it. In this
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Step: 3 -> Persistent Mapping or Ma
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To assign a class indicator, select
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I_OID = '30EA9E25999F0843BE6F7B8606
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Step: 2 -> Persistent Mapping or Ma
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Step: 3 -> Write a Program to creat
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delete_persistent importing im_sno
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Persistent Objects: Using GUID Obje
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Give the table name. For eg ZSTUDEN
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Add the remaining fields as well. S
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Here I am creating a new student. S
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sname, mark1, mark2. CATCH CX_OS_OB
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Step: 3 Create OO transaction. Go t
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Execute the transaction Z_TX Step:
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1.6 Inheritance In OO ABAP we use a
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METHOD xyz. write : / 'Child class
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2.3 Binding Check Table I have prep
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Introduction: Understanding "ABAP U
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Actual result - 24. Expected Result
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Executing Unit Tests: For program,
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Demo on "Narrow Casting" Definition
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Accessing methods using super class
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Abstract Classes and Methods in Obj
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Double click on the Method name "AR
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A successful message is displayed l
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Enter the Super class name as "Z_DE
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Write the code In between Method an
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Enter the number under V_NUM as "6"
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Enter the Description of the class
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Method meth * Local Data Declaratio
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Enter the Description of the class
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Pop-up window is displayed Go to "A
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A pop-up window is displayed, then
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The output will be displayed like b
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After execution (F8): Result:
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After execution (F8): Result:
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Enter the „Class name‟, „Clas
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Enter the „Description‟ for the
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Create a screen „0100‟ and a cu
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MODULE user_command_0100 INPUT. CAS
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internal_error = 3 parameter_error
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EXPORTING fields_table = locint_fie
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*&---------------------------------
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l_err_row TYPE i. TYPE-POOLS:sx. DA
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Doesn‟t allow the user to modify
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Event Handler Technique in Object o
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Output. Now select the method. And
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After that provide the logic in se3
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Dialog processing after COMMIT WORK
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The Event TRANANSACTION_FINISHED of
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Object Oriented ABAP

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