ABAP CDS View Annotations: Enhance Functionality & UI

SAP ABAP CDS View Annotations

Annotations in ABAP Core Data Services (CDS) views enhance functionality by defining metadata, behavior, and UI properties. They help control aspects like security, performance, and visualization.

🔹 Common CDS Annotations

Category	Annotation	Purpose
General	`@AbapCatalog.sqlViewName`	Defines the SQL view name in the database.
	`@AbapCatalog.compiler.compareFilter`	Optimizes filter performance.
Data Exposure	`@AccessControl.authorizationCheck`	Enforces authorization using DCL.
UI & Fiori	`@OData.publish: true`	Exposes the CDS as an OData service.
	`@UI.lineItem`	Defines columns in an SAP Fiori list report.
Performance	`@VDM.viewType`	Specifies the type (Basic, Composite, Consumption).
	`@Analytics.dataCategory`	Defines analytical behavior (e.g., Cube, Dimension).

🔹 Example CDS View with Annotations

@AbapCatalog.sqlViewName: 'ZDEMO_CDS'
@AccessControl.authorizationCheck: #CHECK
@OData.publish: true
define view ZDEMO_CDS as select from sflight {
    key carrid,
    key connid,
    fldate,
    price
}

This example: ✅ Creates a database view (ZDEMO_CDS). ✅ Enforces authorization (CHECK). ✅ Publishes as an OData service.