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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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Classic exception handling


As was mentioned in the introduction, when working with the SAP system, it is rather inevitable to find some old code, and it was most likely created with classic exceptions. Although it is not recommended, and even discouraged, to use them on a regular basis in a new development, there are still several cases where it is the only way to communicate and handle the unexpected behavior of the program.

Handling

Prior to the introduction of class-based, object-oriented programming in SAP systems, one of the methods of code modularization was function modules. The reusable code components with a particular task to do were wrapped into pretty simple function calls, and the modules were bundled into function groups. The function modules—despite the fact that they were mostly superseded by the classes and methods—are still necessary when using Remote Function Call (RFCs).

Even if the code is well thought out and well written, it is still necessary to ensure that the system...

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