44232071 ABAP Overview 2hrs

8/3/2019 44232071 ABAP Overview 2hrs

1/48

Beyond the ObviousBeyond the Obvious

SAP R/3 System Overview&

ABAP/4 Programming


2/48

SAPR/3 System

Overview of R/3 System


3/48

Logical View of R/3 System


4/48

ABAP/4 -SAPR/3 PROGRAMMING

LANGUAGE

Advanced Business

Application Programming


5/48

ABAP/4

Fourth generation language

Event driven

All SAP R/3 applications and parts of Basis are

developed in ABAP

Verbose language


6/48

Topics of Discussion

ABAP Development Workbench

Data Dictionary

Reports

BDC

SAP Script

Module Pool


7/48

ABAP Development Workbench


8/48

ABAPDevelopment Workbench

ABAP Development Workbench is a graphical

programming environment which enables us to createnew ABAP applications and change existing SAP

applications.


9/48

ABAPWorkbench -Transaction code -S001

Tools -> ABAP Workbench


10/48

Repository Browser -Transaction code -SE80


11/48

Data Dictionary -SE11


12/48

Function Builder -SE37


13/48

Screen Painter -SE51


14/48

Creating a Program

Click the button ABAP Editor in the Workbench


15/48

Creating a program

The program attributes screen looks like this


16/48

... Debugging


17/48

Runtime Analysis

Tells us how long do specific operations take during

the run

Gives the trace list of subroutines that have been

processed

SQL trace helps to trace database calls to find out

the tables used by the application


18/48

Development class

A set of logically related development environmentobjects.

A development class together with its objects istransportable.

Each development class is under the administration

of one user.


19/48

Creating development class


20/48

Data Dictionary


21/48

Data Dictionary

ABAP Development workbench tool

Stores system wide data definition

Completely integrated with ABAP Workbench


22/48

Data Dictionary objects

Data Elements

Domains

Tables

Structures

Views


23/48

REPORTS


24/48

ABAP/4 Reporting

Objectives

Understand data declarations, commands, system

fields used in reports

Understand the selection screens Understand the program level events, conditions &

loops

Understand the data retrieval from the tables and

Internal tables

Understand the modularization techniques,

field symbols and logical databases


25/48

Types ofprograms

Type 1

run on its own

Can be started it in the R/3 system without a

transaction code

Can be executed in background

Type M ( Module pool)

Program cannot run on its own and can be called via

a transaction code

Type I( Include )


26/48

Program Selections

SELECT-O

PTION

S StatementSELECT-OPTIONS FOR

NO EXTENSION

OBLIGATORY

LOWER CASE

SELECT-OPTIONS allows specification of multiplevalues and ranges. This can only be declared forfields within tables defined in the TABLES statement.

ExampleSELECTSELECT--OPTIONS: S_KUNNR FOR KNA1OPTIONS: S_KUNNR FOR KNA1--

KUNNRKUNNR.


27/48

Program Selections

PARAMETERS StatementPARAMETERS TYPE

LIKE

OBLIGATORY

AS CHECKBOX

DEFAULT

This statement allows entry of a single value on theselection screen.

Example :PARAMETERPARAMETER : P_KUNNR LIKE KNA1P_KUNNR LIKE KNA1--KUNNRKUNNR.


28/48

Blocking Selection Screen

A sample screen

SELECTION-SCREEN BEGIN OF BLOCK RAD1

WITH FRAME TITLE TEXT-002.

PARAMETERS R1 RADIOBUTTON GROUP GR1.

PARAMETERS R2 RADIOBUTTON GROUP GR1.

PARAMETERS R3 RADIOBUTTON GROUP GR1.SELECTION-SCREEN END OF BLOCK RAD1.


29/48

DATA Definitions

TYPES StatementTYPES TYPE or LIKE

DECIMALS

SAP allows the creation of new user defined data types.

And this does not create a variable, just a new typethat can be used in creating a variable.

Example :

TYPES : CC LIKE BKPFTYPES : CC LIKE BKPF--BUKRSBUKRS

DATA : NEW_CCTYPE CC.DATA : NEW_CCTYPE CC.


30/48

Data Definitions

InternalT

ablesDATA : BEGIN OF OCCURS x,

(variable definitions)

END OF .

Internal Tables are defined as an extension of astructure, with the addition of an OCCURS clause.

Example

DATA : BEGIN OF T_WRK,DATA : BEGIN OF T_WRK,

T_KUNNR LIKE KNA1T_KUNNR LIKE KNA1--KUNNR,KUNNR,

SW TYPE C,SW TYPE C,END OF T_WRK.END OF T_WRK.


31/48

Program Level Events

INIT

IALIZAT

ION. AT SELECTION-SCREEN

AT SELECTION-SCREEN OUTPUT

START-OF-SELECTION

END-OF-SELECTION TOP-OF-PAGE

END-OF-PAGE

AT LINE-SELECTION

AT USER-COMMAND


32/48

IF StatementCASE Statement


33/48

Modularization techniques

Defining Macros

Include program

Subroutines

Function Module


34/48

BDC


35/48

BDC - Batch Data Communication

To transfer data from non-SAP systems ( ie.already available in electronic form )

Suitable for entering large amounts of data as it

executes the transactions automatically

Similar to entering the data in the transactionsmanually


36/48

BDC Methods

Classical Method

Call Transaction

Call Dialog


37/48

Preparing a BDCTable

The BDC table should have five fields viz.,

1) Program name2) Screen number

3) Screen begin

4) Field name

5) Field value


38/48

Preparing a BDCTable

For eg.

Prog Screen Scrn Field Field

name No begin name value

SAPMMO3M 0060 X

RM03M- MATNR mat.no

RM03M-MBRSH indu. sec

.

.

SAPMM03M 0080 X

RM03M-WERKS target pla

.

.


39/48

SAP Script


40/48

SAP Script

Objectives

Understand Forms, various components of forms

such as windows, pages, character format,paragraph format etc.

Understand the control commands, symbols and

function modules in SAP Script.


41/48

Forms

Controls the page layout and text formatting

A form of the graphical Form Painter consists of

Header data

Page layout

Paragraph format

Character format Documentation


42/48

SAP Script - Control commands

PERFORM Command

To Call an ABAP subroutine (form) from any program

Syntax

/: PERFORM IN PROGRAM

/: USING &VAR1&

/: CHANGING &VAR2&

/: ENDPERFORM


43/48

Function Modules in SAP Script

Form functions

OPEN_FORM Opens the form output.

WRITE_FORM Calls a form element

CLOSE_FORM Ends the form output.

START_FORM Starts a new form.

Database

READ_TEXT Reads a text module andpasses

it to the specified work areas.


44/48

Module Pool


45/48

Creating Screens

Clickscreen painterbutton in Workbench


46/48

Structure of program


47/48

Flow logic

The flow logic of a screen drives the processing

sequence for that particular screen. Flow logic

describes how the program reacts to the user actions.

The events used for this purpose are,

Process before output (PBO)

Process after input (PAI)

Process on value request (POV)

Process on help request (POH)


48/48

Date post:	06-Apr-2018
Category:	Documents
Upload:	sales1510
View:	219 times
Download:	0 times

44232071 ABAP Overview 2hrs

Documents