NNielsen

ABAP Tutorial

Nicolai Nielsen

May 31, 2023

Contents

1 Gentle Introduction to ABAP

a Hello World, Comments, Germanness

b Variable Declaration

c Structures and tables

Difference between TYPE and LIKE

Example of SELECT statement

f Field Symbols

i Filling structure and table

j Messages to the user

l Tabellenarten

2 Modularisation

a Funktionsbaustein aufrufen

b Unterprogramm

a Write, Message

b SELECT-OPTIONS

c Selektionselemente

d Upload, download

e Abap List View

1. Data selection

a Normalization

First Normal Form

Second Normal Form

Third Normal Form

Summary: Howto normalize

Entity Relationship Model

b Data Dictionary DDIC

7 ABAP List Views

a Capture input parameter and create an output table

b Creating a clsalvtable object

c Our very simple ALV grid

d Beautifying our ABAP List View (ALV)

e Filter and Sorting the ALV

f Naming the headers of ALV grids and descriptions of selection parameters

a Create CDS Views

b Using system variables in CDS views

COALESCE( arg1, arg2 )

CAST( operand AS dtype [PRESERVING TYPE])

II Classical DynPro

1 Important transactions

c Communication between SE51 and SE38

d Difference between report and module pool

e Screen ranges

f Include everything

III OO Programming in ABAP

1 Defining and implementing methods

a Class-based exceptions

b Global exceptions

3 Testing methods

a Quick Example

1 ABAP System Fields

a Programming Guidelines

List of Figures

I.2 Smartforms initial screen

I.3 Example Atomization

I.4 Dissolve repeating groups

I.5 Example how to define a key

I.6 Dependency of attributes on keys

I.7 Functional Dependency

I.8 Entity symbol for Chen ERM diagram

I.9 Attribute symbol for Chen ERM

I.10 Relationship symbol for Chen ERM

I.11 Two related entities

I.12 An entity with an attribute

I.13 A relationship with an attribute

I.14 Basic Cardinalities in Entity relationship models

I.15 Relationship SAP table, data element and domain

I.16 Domain in SE11

I.17 Input screen for domain

I.18 Domains and fixed values

I.19 Conversions of domains

I.20 Example of a parametric plot ( $\qopname \relax o{sin}(x), \qopname \relax o{cos}(x), x$ )

I.21 Output of an ALV table

I.22 Icons for Sorting and Filtering

I.23 ALV header and Name for selection parameter

I.24 Go To -> Text Element

I.25 Text Elements Screen

I.26 Name how the selection parameter is displayed

I.27 Name the ALV header in SE38

I.28 CDS View: Select Data Definition

I.29 CDS View: Data Definition

I.30 datatypes the CDS cast function can use

I.31 Table of datatypes you can cast from and to

II.1 Create Module Pool Program

II.2 Create Object Directory Entry

II.3 Inactive Program

II.4 Screen Painter: Attributes

II.5 Screen Painter: Create Text field

II.6 Uncomment Module

II.7 Create OK Code

List of Listings

I.1 The two ways of commenting in ABAP

I.2 How to declare variables

I.3 Declaration of a structure, a table, and the chain rule

I.4 Usage of CDS view system variables

I.1 CDS view: join on join

I.2 Example of Coalesce

I.3 Example of Cast

III.1 The definition of a method in a class

III.2 The implementation of a Class

III.3 Calling a method in a program

III.4 How to raise an exception in your code

III.5 Basic structure of Exceptions

III.6 Simple Test Class Definition

III.7 Simple Test Class and Methods

List of Tables

III.1 RISK LEVEL attributes