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

Chapter 6. ABAP and XML

Working with XML files is a common task in any SAP project, especially where we have multiple systems (SAP or non-SAP) and we need to integrate them with the interface. In a NetWeaver environment, there are multiple approaches to handling the XML format. You can use one of the standard classes prepared by SAP, or create your own transformation using an SAP declarative language called Simple Transformation (ST). On the basis of examples prepared in this chapter, you will learn how to apply each method and learn about their advantages and disadvantages.

The following topics will be covered in this chapter:

  • Parsing and displaying XML files into the CL_XML_DOCUMENT class
  • Changing the content of an XML using the CL_XML_DOCUMENT class
  • Introduction to ST
  • XML serialization and deserialization using ST
  • JSON-XML format in ABAP
  • Converting XML to JSON with the sXML Library