...

bookshop/db/data/sap.capire.bookshop-Genres.csv

@@ -0,0 +1,16 @@
+ID;parent_ID;name
+10;;Fiction
+11;10;Drama
+12;10;Poetry
+13;10;Fantasy
+14;10;Science Fiction
+15;10;Romance
+16;10;Mystery
+17;10;Thriller
+18;10;Dystopia
+19;10;Fairy Tale
+20;;Non-Fiction
+21;20;Biography
+22;20;Autobiography
+23;20;Essay
+24;20;Speech

bookshop/db/schema.cds

@@ -1,11 +1,12 @@
 namespace sap.capire.bookshop;
-using { Currency, managed, cuid } from '@sap/cds/common';
+using { Currency, managed, cuid, sap } from '@sap/cds/common';
 
 entity Books : managed {
   key ID : Integer;
   title  : localized String(111);
   descr  : localized String(1111);
   author : Association to Authors;
+  genre  : Association to Genres;
   stock  : Integer;
   price  : Decimal(9,2);
   currency : Currency;
@@ -21,6 +22,12 @@ entity Authors : managed {
   books  : Association to many Books on books.author = $self;
 }
 
+entity Genres : sap.common.CodeList {
+  key ID   : Integer;
+  parent   : Association to Genres;
+  children : Composition of many Genres on children.parent = $self;
+}
+
 entity Orders : cuid, managed {
   OrderNo  : String @title:'Order Number'; //> readable key
   Items    : Composition of many OrderItems on Items.parent = $self;

bookshop/package.json

@@ -1,16 +1,17 @@
 {
-  "name": "@sap/capire-bookshop",
+  "name": "@capire/bookshop",
   "version": "1.0.0",
   "description": "A simple bookshop application, build in a self-contained all-in-one fashion, i.e. w/o reusing other packages.",
   "license": "SAP SAMPLE CODE LICENSE",
   "dependencies": {
-    "@sap/capire-common": "*",
+    "@capire/common": "*",
     "@sap/cds": "*",
     "express": "*"
   },
   "scripts": {
     "start": "cds run --in-memory?",
-    "watch": "cds watch"
+    "watch": "cds watch",
+    "test:genres": "cds serve test/genres --in-memory"
   },
   "cds": {
     "requires": {

bookshop/test/genres.cds

@@ -0,0 +1,4 @@
+using { sap.capire.bookshop as my } from '../db/schema';
+service TestService {
+  entity Genres as projection on my.Genres;
+}

bookshop/test/genres.http

@@ -0,0 +1,38 @@
+#################################################
+#
+#   Genres
+#
+
+GET http://localhost:4004/test/Genres?
+###
+
+GET http://localhost:4004/test/Genres?
+&$filter=parent_ID eq null&$select=name
+&$expand=children($select=name)
+###
+
+POST http://localhost:4004/test/Genres?
+Content-Type: application/json
+
+{ "ID":100, "name":"Some Sample Genres...", "children":[
+    { "ID":101, "name":"Cat", "children":[
+        { "ID":102, "name":"Kitty", "children":[
+            { "ID":103, "name":"Kitty Cat", "children":[
+                { "ID":104, "name":"Aristocat" } ]},
+            { "ID":105, "name":"Kitty Bat" } ]},
+        { "ID":106, "name":"Catwoman", "children":[
+            { "ID":107, "name":"Catalina" } ]} ]},
+    { "ID":108, "name":"Catweazle" }
+]}
+###
+
+GET http://localhost:4004/test/Genres(100)?
+# &$expand=children
+# &$expand=children($expand=children($expand=children($expand=children)))
+###
+
+DELETE http://localhost:4004/test/Genres(103)
+###
+
+DELETE http://localhost:4004/test/Genres(100)
+###

bookshop/tests/orders.http

@@ -1,18 +0,0 @@
-
-### List Books with their current stocks
-GET http://localhost:4004/admin/Books?$select=ID,stock
-
-### List all Orders
-GET http://localhost:4004/admin/Orders?
-&$expand=Items
-
-### Submit Orders
-POST http://localhost:4004/browse/Orders
-Content-Type: application/json
-
-{ "OrderNo":"2019-09...", "Items":[
-    { "book_ID":201, "amount":5 },
-    { "book_ID":207, "amount":3 }
-]}
-
-# Sending this three times should result in a 409: 5 exceeds stock for book #201