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

Using the CL_XML_DOCUMENT class for XML


The class described in this chapter is based on the very well known and frequently used iXML library. The integrated XML provides a full spectrum of useful tools and methods to read, parse, and edit the XML format. We will use the following XML file in all examples in this chapter:

<?xml version="1.0" encoding="UTF-8"?>
<AIRLINES>
 <SCARR>
 <CARRID>A2</CARRID>
 <CARRNAME>Antarctica Airlines</CARRNAME>
 <CURRCODE>AQD</CURRCODE>
 <URL>http://antarcticaairlines.aq</URL>
 </SCARR>
</AIRLINES>

The following XML is an airline and booking data model system available in most SAP system IDES versions. We will start every example with a standard, local class—based report. You can find this template in Appendix A, Assessments.

Reading and parsing XML files to ABAP

This example shows how to resolve a situation where we have an external system, Y, which exports airline data to an XML file...