capabilities.cds

using {TravelService} from '../srv/travel-service';

annotate TravelService.Travel with @odata.draft.enabled;
annotate TravelService.Travel with @Common.SemanticKey: [TravelID];
annotate TravelService.Booking with @Common.SemanticKey: [BookingID];
annotate TravelService.BookingSupplement with @Common.SemanticKey: [BookingSupplementID];

annotate TravelService.Travel with @Capabilities : { 
  InsertRestrictions : {
    $Type : 'Capabilities.InsertRestrictionsType',
    Insertable: false,
  },
  DeleteRestrictions : {
      $Type : 'Capabilities.DeleteRestrictionsType',
      Deletable: false,
  }
 };

annotate TravelService.Booking with @Capabilities : { 
  DeleteRestrictions : {
      $Type : 'Capabilities.DeleteRestrictionsType',
      Deletable: false
  }
 };

//Exercise 7: Aggregation Capabilities
annotate TravelService.BookedFlights with @(
  Aggregation.CustomAggregate #BookingUUID: 'Edm.Decimal',
  Aggregation.ApplySupported              : {
    $Type                 : 'Aggregation.ApplySupportedType',
    Transformations       : [
      'aggregate',
      'groupby'
    ],
    Rollup                : #None,
    GroupableProperties   : [
      to_Customer_CustomerID,
      AirlineID
    ],
    AggregatableProperties: [{
      $Type   : 'Aggregation.AggregatablePropertyType',
      Property: BookingUUID
    }, ],
  }
) {
  BookingUUID  @Aggregation.default: #COUNTDISTINCT  @Common.Label: 'Booked Flight'
}