Book Image

Mastering SAP ABAP

By : Paweł Grześkowiak, Wojciech Ciesielski, Wojciech Ćwik
Book Image

Mastering SAP ABAP

By: Paweł Grześkowiak, Wojciech Ciesielski, Wojciech Ćwik

Overview of this book

Advanced Business Application Programming (ABAP) is an established and complex programming language in the IT industry. This book is designed to help you use the latest ABAP techniques and apply legacy constructions using practical examples. You'll start with a quick refresher on language and database concepts, followed by agile techniques for adding custom code to a modern ABAP system. After this, you will get up to speed with the complete ABAP toolset for importing data to and from different environments. Next, you'll learn how to print forms and work with the different ABAP tools for Extensible Markup Language (XML) manipulation. While covering further chapters, you'll gain insights into building stunning UI5 interfaces, in addition to learning how to develop simple apps using the Business Object Processing Framework (BOPF). You will also pick up the technique of handling exceptions and performing testing in ABAP. In the concluding chapters, you can look forward to grasping various techniques for optimizing the performance of programs using a variety of performance analysis tools. By the end of this book, you will have the expertise you need to confidently build maintainable programs in Systems, Applications, and Products (SAP).
Table of Contents (25 chapters)
Title Page
Copyright and Credits
Dedication
About Packt
Contributors
Preface
Index

ABAP Objects design patterns


One of the most important things when speaking about OOP is design patterns. But what are design patterns? A design pattern is a universal, tested-in-practice guide for frequently occurring, repetitive design issues.

Note

Design patterns are a description of a solution, not the implementation of a solution.

Design patterns can be described using four basic elements:

  • The name of the pattern
  • Problem: How to recognize situations when we should use a particular pattern to ensure the use of a pattern is justified
  • Solution: Describes elements of a solution, their relations, connections, and duties
  • Consequences: A list of advantages and disadvantages of a pattern

Design patterns can be divided into three sets according to their purpose:

  • Creational: Describes the process of creating a new object, the initialization, and the configuration of objects or classes
  • Structural: Describes the structure of related objects
  • Behavioral: Describes the behavior of cooperating objects

Over the...