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March-2005

Introduction to Online Programming

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Objectives

The participants will be able to:

Recognize the different types of ABAP programs.

Recognize the elements of an Online program:

Screen components

Screen layout

ABAP program components Processing control

Program work areas

Screen work areas

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ABAP Program Types

Report Programs (produce

lists )

Conventional Report

(do not allow interactionby the user)

Interactive Report

(allow interaction by the

user)

Online Programs

(do not produce lists..are a collection of

screens)

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Developing Online Programs

Object Navigator SE80

Screen Painter SE51 ABAP Editor SE38

ABAP Dictionary SE11Menu Painter SE41

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Screen Components

Screen Painter

Screen Attributes

Screen Layout

Field Attributes

Flow Logic

The Screen Painter is used to maintain all componentsof a screen

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Screen Layout

1 2

3

4

5

6

7

Some of the elements that can be painted on a screen in the Fullscreen Editor.

Text Fields

Radio Buttons

Check Boxes

Frame

Push Button

Tabstrip Controls

Text Fields

I/O Template

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ABAP Program Components

Top Include (Global

data declaration)

PBO Modules

(Called before the screen is

displayed)

PAI Modules

(called after the user has invoked a

function code or pressed the Enter

key)

ABAP

Form Include

(Subroutines)

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Online Program Processing Control

During the execution of an Online program, control is constantly switching betweenthe DYNPRO and ABAP processors

** INCLUDE MZAVGI01

MODULE CHECK INPUT.

ENDMODULE.

MODULE SELECT INPUT.

ENDMODULE.

MODULE UPDATE INPUT.

ENDMODULE.

** INCLUDE MZAVGO01

MODULE CLEAR OUTPUT.

ENDMODULE.

ABAP PROCESSOR

** SCREEN 9000 **

PROCESS BEFORE OUTPUT.

MODULE CLEAR.

PROCESS AFTER INPUT.

MODULE CHECK.

MODULE SELECT.

** SCREEN 9001 **

PROCESS BEFORE OUTPUT.

PROCESS AFTER INPUT.

MODULE UPDATE.

ABAP PROCESSOR

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Online Program Work Areas

Screen Work AreaProgramWork Area

PBO

PAI

Transport occurs

if the field names

are identical

name

Aaron

phone

215-387-3232

city

Philadelphia

DATAname(10).Aaron

DATAnum(12).

DATA city(20).

Philadelphia

An Online program consists of two distinct work areasthe screen work area andthe program (module pool) work area.

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Demonstration

Creation of an online program through transaction SE80.

Creating a screen for that program to display data for an employee of an

organization ( name, employee number , designation, etc )

Attaching a transaction code to the Online program.

Displaying the screen with employee data, on execution of the transaction

code.

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Practice

Creation of an online program through transaction SE80.

Creating a screen for that program to display data for an employee of an

organization ( name, employee number , designation, etc )

Attaching a transaction code to the Online program.

Displaying the screen with employee data, on execution of the transaction

code.

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Summary

You should always use the Object Navigator to create online programsbecause the system will automatically maintain an online programs sub-objects and you will be able to see the hierarchy list of these sub-objects.

In ABAP, basically there are two different types of programs: Reportprograms and Online programs.

The Screen Painter is used to maintain all components of a screen: screen

attributes, screen layout, field attributes, and Flow Logic.

The Fullscreen Editor supports two modes: Graphical and alphanumeric.

An online program consists not only of the screens and their Flow Logic, butalso ABAP program components: Global data, PBO modules, PAI modules,and subroutines.

The run-time environment of an online program is made up of twocomponents: dynpro (online) processor and ABAP processor.

An online program consists of two distinct work areasthe screen work areaand the program (module pool) work area.

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Questions

What are the different elements of an online program ?

What is the difference between a PBO event and a PAI event in an online

program ?

What are the two components of the run-time environment of an online program ?