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samples revisited after teched

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2019-10-24 12:03:37 +02:00
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packages/bookshop-enhanced/db/schema.cds Normal file
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/*
In this model we demonstrate how to add Genres to Books in
as if it was an external extension. For example we use
CDS Aspects' to extend the core domain model's Books entity
as well as the AdminService.
*/
namespace sap.capire.bookshop;
using { sap.capire.reviews.ReviewsService as external } from '@sap/capire-reviews';
using { sap.capire.bookshop.Books } from '@sap/capire-bookshop/db/schema';
using { sap.common.CodeList } from '@sap/cds/common';
// Extending Books by Reviews and Genres
extend Books with {
reviews : Composition of many external.Reviews on reviews.subject = ID;
rating : external.Reviews.rating;
genre : Association to Genres;
}
// Hierarchical Code List for Genres
entity Genres : CodeList {
key ID : Integer;
children : Composition of many Genres on children.parent = $self;
parent : Association to Genres;
}