add customer restriction when browsing invoices

media-store/srv/browse-invoices-service.cds

@@ -0,0 +1,33 @@
+using {sap.capire.media.store as my} from '../db/schema';
+using {BrowseTracks.Tracks} from './browse-tracks-service';
+
+@(requires : 'customer')
+service BrowseInvoices {
+    @readonly
+    entity Invoices as projection on my.Invoices;
+
+    action invoice(tracks : array of {
+        ID        : Integer;
+        unitPrice : Decimal(10, 2);
+    });
+
+    action cancelInvoice(ID : Integer);
+
+    @readonly
+    entity Tracks   as projection on my.Tracks excluding {
+        alreadyOrdered
+    };
+
+    @readonly
+    entity Genres   as projection on my.Genres {
+        * , tracks : redirected to Tracks
+    };
+
+    @readonly
+    entity Albums   as projection on my.Albums {
+        * , tracks : redirected to Tracks
+    };
+
+    @readonly
+    entity Artists  as projection on my.Artists;
+}