What is query implementation class in SAP BC-ESI-RAP - RESTful ABAP Programming Model?

SAP Term: query implementation class

• Component: BC-ESI-RAP

• Component Name: RESTful ABAP Programming Model

• Description: A class referenced by a custom entity to implement its query.

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• Key Concepts: 
  Query implementation class is a component of the BC-ESI-RAP RESTful ABAP Programming Model. It is a class that provides the implementation of a query service. It is responsible for providing the data for a query request and for mapping the query parameters to the corresponding ABAP Open SQL statements. 
  
  How to use it: 
  The query implementation class is used to implement a query service in an ABAP program. It is used to define the data that should be returned by the query service and to map the query parameters to the corresponding ABAP Open SQL statements. The query implementation class can also be used to define additional logic, such as authorization checks or data validation. 
  
  Tips & Tricks: 
  When implementing a query service, it is important to ensure that the data returned by the query service is consistent with the data requested by the client. Additionally, it is important to ensure that all necessary authorization checks are performed before returning any data. 
  
  Related Information: 
  For more information about the BC-ESI-RAP RESTful ABAP Programming Model, please refer to SAP Help Portal. Additionally, there are several tutorials available online that provide step-by-step instructions on how to use this programming model.