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  • Book Overview & Buying Mastering SAP ABAP
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Mastering SAP ABAP

Mastering SAP ABAP

By : Paweł Grześkowiak, Philipp Deth, Wojciech Ciesielski, Wojciech Ćwik
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Mastering SAP ABAP

Mastering SAP ABAP

3 (1)
By: Paweł Grześkowiak, Philipp Deth, 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 (19 chapters)
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Assertions


ABAP programs, as well as pretty much every other program, are more or less based on certain assumptions. For example, the data provided to a method or a function is consistent, that the program behaves as designed, or that the outcome of data processing follows some kind of scheme.

In most cases, these assumptions are so obvious that the developer is not even aware of them when writing a piece of code. Sometimes, however, it may be more important to check whether a certain condition is fulfilled before proceeding further. Using the standard IF-ELSE statement for this purpose is sufficient and will do exactly what is needed. However, there is another shorter and more controlled way of achieving this—with assertions.

The assertion in ABAP code is a simple statement saying assert that something fulfills a condition. There is no need to use any sophisticated syntax or build nested IF structures for several conditions. What's more, the assertion mechanism is remotely controlled—particular...

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