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

Best practice techniques


Using best practices allows the programmer to create modern code. Programs become optimal and the product life cycle is extended. This part of the chapter will describe techniques that help create high-quality code.

The first topic is the proper naming of all objects while creating and modifying business processes. The exact rules are described in this book in previous chapters. Using an appropriate naming makes it easier in the future to expand programs and look for errors in them.

The next point is to clean variables using the clear function. A program that has been used many times may not always return the variables to the correct state. Clearing the content allows you to be sure that incompatible data will not be transmitted. After many operations, such as reading from the database or reading the table, check the sy-subrc system variable. If it is not equal to 0, it means that there is no data that the program has asked for. There is no need to execute further...