INTRODUCTION ABOUT ABAP.

Introduction About ABAP:-

Advanced Business Application Programming .

ABAP/4 Development Workbench

n  The Development Workbench provides access to SAP’s development tools.

https://www.youtube.com/channel/UCq55W5Hi-Cs8U4O590q6e0Q

n  All programs are stored in the R/3 Repository.

¨  A program is simply an object.

n  All definitions are kept in the data dictionary.

¨  e.g. variable descriptions and parameters of fields.

n  Double-clicking will navigate you to wherever the object is stored.

n  Remote call functions let you access other systems.

Reporting and dialogue Programming:-

n  In reporting you use the ABAP/4 Open SQL to read data from the R/3 database

¨  A report consists of a selection screen on which you define the dataset you wish to display, and a list which displays the data itself.

n  In dialog programming you use the screen painter to create screens and program the sequence in which they appear.

ABAP/4 Program objects:-

n  You can use the ABAP/4 Development Workbench to create ABAP/4 programs.

n  You can call objects from the object list generated from the Object Browser’s initial screen.

ABAP/4 Programs:-

n  All ABAP/4 programs (objects) are made up of:

¨  Source code

¨  Text elements

¨  Attributes

Use Transaction SE38:-

Program Attribute:-

ABAP Editor:-

Creating Programs :-

n  Begin by first specifying a development class.

¨  Development classes are categories of SAP objects (e.g. program object).

n  Customer-specific program names begin with Y or Z.

n  If you are creating a test object which you do not wish to be transported, choose Local Object.

The development class is then set to $TMP automatically

The ABAP/4 Editor:-

n  The ABAP/4 Editor can run in three different modes:

1.            Command mode

2.            PC mode with line numbering

3.            PC mode without line numbering

n  You can switch between editor modes by choosing Settings ®  Editor mode

¨  It is recommended that you do your work in PC mode with line numbering

ABAP/4 Syntax:-

n  An ABAP/4 program consists of individual statements

¨  Each statement must end with a period.

¨  The first word of a statement is known as the key word.

¨  Words are separated from each other by at least one blank.

¨  Statements can be indented.

¨  Statements can extend over several lines.

n  You can concatenate several consecutive statements with an identical key word  (e.g. WRITE: ).

¨  Follow the key word with a colon.

¨  Separate each concatenated part with a comma.

¨  End the lines of the concatenated statements with a period.

n  You can insert comments into a program in two ways:

1.            An asterisk (*) in column 1 flags the whole line as a comment.

2.            A quotation mark (“) within a line flags the remainder of the line as a comment.

General structure for ABAP/4 Statement.