CDS with parameters in the context of OData refers to using Core Data Services (CDS) views that accept parameters as part of an OData service. This allows you to create more flexible and dynamic queries by passing parameters to the CDS views during runtime. The parameters can be used to filter, sort, or limit the data returned by the OData service.
Here's a brief overview of how CDS views with parameters work in the context of OData:
1:Define a CDS View with Parameters:
In your ABAP development environment, define a CDS view that includes parameters. Parameters are declared in the parameters section of the CDS view definition.
2:Expose CDS View as OData Service:
Use the @OData.publish annotation to expose the CDS view as an OData service. This annotation makes the CDS view available for consumption via OData.
3: Pass Parameters in OData Query:
When making OData requests, clients can include parameters in the query string to filter or customize the results
4: Handle Parameters in OData Service Implementation:
In the backend ABAP code, you need to handle the parameters passed from the OData service. The OData service implementation should extract the parameter values and use them to filter or modify the data retrieval logic.
CDS views with parameters provide a way to create more dynamic and flexible OData services, allowing clients to tailor their requests based on specific criteria. This is especially useful when building applications that need to interact with SAP data in a customized manner.