What is RAP handler class in SAP (BC-ESI-RAP - RESTful ABAP Programming Model)?

SAP Term: RAP handler class

• Component: BC-ESI-RAP

• Component Name: RESTful ABAP Programming Model

• Description: Local class in a CCIMP include of an ABAP behavior pool ABP for implementing RAP handler methods that is executed during the RAP interaction phase.

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• Key Concepts: 
  RAP handler class is a class in the BC-ESI-RAP RESTful ABAP Programming Model that is used to define the behavior of a RESTful service. It contains methods for handling HTTP requests and responses, as well as methods for processing data. The handler class is responsible for mapping the incoming request to the appropriate business logic and returning the response. 
  
  How to use it: 
  To use a RAP handler class, you must first create an instance of it in your ABAP program. Then, you must define the methods that will be used to handle the incoming requests and responses. Finally, you must register the handler class with the RAP framework so that it can be used by other programs. 
  
  Tips & Tricks: 
  When creating a RAP handler class, it is important to keep in mind that the methods should be designed to be as generic as possible so that they can be reused in other programs. Additionally, it is important to ensure that all of the necessary data is included in the request and response objects so that they can be properly processed by the handler class. 
  
  Related Information: 
  For more information on RAP handler classes, please refer to the SAP Help Portal documentation on BC-ESI-RAP RESTful ABAP Programming Model. Additionally, there are several tutorials available online that provide step-by-step instructions on how to create and use a RAP handler class.