From 9479aa4cadf6296c64f8718b308d7b3f4d9aeffa Mon Sep 17 00:00:00 2001
From: Daniel <daniel.hutzel@sap.com>
Date: Thu, 8 Apr 2021 19:17:48 +0200
Subject: [PATCH] .

---
 .env                           |  1 +
 bookshop/db/schema.cds         |  2 +-
 bookshop/srv/admin-service.cds | 24 +++++++++++++++++++++++-
 bookshop/srv/cat-service.js    |  2 +-
 4 files changed, 26 insertions(+), 3 deletions(-)
 create mode 100644 .env

diff --git a/.env b/.env
new file mode 100644
index 00000000..9d86968c
--- /dev/null
+++ b/.env
@@ -0,0 +1 @@
+# cdsc
\ No newline at end of file
diff --git a/bookshop/db/schema.cds b/bookshop/db/schema.cds
index ec8b119a..f682acfe 100644
--- a/bookshop/db/schema.cds
+++ b/bookshop/db/schema.cds
@@ -1,4 +1,4 @@
-using { Currency, managed, sap } from '@sap/cds/common';
+using { Currency, managed, temporal, sap } from '@sap/cds/common';
 namespace sap.capire.bookshop;
 
 entity Books : managed {
diff --git a/bookshop/srv/admin-service.cds b/bookshop/srv/admin-service.cds
index ea9b0731..005b4764 100644
--- a/bookshop/srv/admin-service.cds
+++ b/bookshop/srv/admin-service.cds
@@ -1,5 +1,27 @@
 using { sap.capire.bookshop as my } from '../db/schema';
 service AdminService @(requires:'admin') {
-  entity Books as projection on my.Books;
+
+  entity Books as SELECT from my.Books { *,
+    // key ID, key validFrom
+  };
   entity Authors as projection on my.Authors;
+
+  // @cds.redirection.target:false
+  // entity Books.history @(cds.temporal:false) as projection on Books {
+  //   *,
+  //   key ID,
+  //   key validFrom @(cds.valid.from:false),
+  //   validTo @(cds.valid.to:false),
+  // };
+}
+
+// entity NonTemporalBook as projection on my.Books {
+//       *,
+//     key ID,
+//     key validFrom @(cds.valid.from:false),
+//     validTo @(cds.valid.to:false),
+// };
+
+extend my.Books with {
+  history : Composition of many my.Books on history.ID = $self.ID;
 }
diff --git a/bookshop/srv/cat-service.js b/bookshop/srv/cat-service.js
index 4676dcd5..c97c23e7 100644
--- a/bookshop/srv/cat-service.js
+++ b/bookshop/srv/cat-service.js
@@ -16,7 +16,7 @@ class CatalogService extends cds.ApplicationService { init(){
   })
 
   // Add some discount for overstocked books
-  this.after ('READ','Books', each => {
+  this.after ('READ','ListOfBooks', each => {
     if (each.stock > 111) {
       each.title += ` -- 11% discount!`
     }