First Steps in SAP ABAP RESTful Application Programming Model (RAP)
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From legacy to innovation! This book provides ABAP developers and SAP consultants with a practical introduction to the latest evolutionary stage of ABAP programming for SAP—the ABAP RESTful Application Programming Model (RAP). RAP enables the development of cloud-capable and future-proof applications in SAP S/4HANA.
Delve into the fundamentals and key components of RAP, including Business Objects (BO), their behavior definition and business services. Learn about Entity Manipulation Language (EML)—a new addition to ABAP—and examine methodologies such as numbering, determinations, validations, actions, functions, drafts, and hierarchies in the RAP model. Explore the details of custom entities, which enable data to be obtained from various sources, including OData web services and non-SAP systems.
This book provides a combination of theory and practical examples to demonstrate the potential applications of RAP, and explains how to use it to create powerful, reliable software that will add value to your company.
- Fundamentals of RAP—introduction to business objects, and their behavior and services
- How to increase efficiency—optimization using RAP methods
- Entity Manipulation Language—a new addition to ABAP for RAP business objects
- Data integration—using external data in RAP services
Exemple de lecture
2.1 Prerequisites
2.1.1 SAP system
The development exercises presented in this book are possible as of S/4HANA On-Premise 2021 release. To ensure unproblematic performance of the exercises, we strongly recommend using this version or a newer one. In addition, it is necessary that you have a valid development key and access to an SAP system within your company. These prerequisites are essential in order to take full advantage of the exercises and make the most of the content in this book.
2.1.2 Required software
For optimal performance of the exercises in this book, it is important that your computer is equipped with some specific software tools. We recommend installing:
1. Eclipse—an integrated development environment that enables efficient programming (https://www.eclipse.org/downloads/)
2. ABAP Development Tools (ADT)—an indispensable toolkit for development with ABAP in the Eclipse environment (https://tools.hana.ondemand.com/#abap)
3. SAP GUI
External links—important note
Note that the URLs given in this book were current at the time of writing. However, it is possible that web addresses may change over time. If you encounter problems accessing the links, we recommend searching the relevant keywords (such as Eclipse Download or ABAP Development Tools) using your favorite search engine to find the latest valid web pages.