Update README.md

.eslintrc

@@ -6,7 +6,7 @@
         "jest": true
     },
     "parserOptions": {
-        "ecmaVersion": 2018
+        "ecmaVersion": 2017
     },
     "globals": {
         "SELECT": true,

.vscode/launch.json

@@ -5,17 +5,19 @@
   "version": "0.2.0",
   "configurations": [
     {
-      "name": "bookshop", "request": "launch", "type": "node", "runtimeExecutable": "npx", "runtimeArgs": [ "-n" ],
+      "name": "cds run",
-      "args": [ "--", "cds", "run", "--in-memory" ],
+      "request": "launch",
-      "cwd": "${workspaceFolder}/packages/bookshop",
+      "type": "node",
-      "console": "integratedTerminal",
+      "runtimeExecutable": "npx",
-      "skipFiles": ["<node_internals>/**"]
+      "runtimeArgs": ["-n"],
-    },
+      "args": ["--", "cds", "run", "--with-mocks", "--in-memory?"], // the leading "--" arg ensures it works with as well as without debugging
-    {
-      "name": "cds run ...", "request": "launch", "type": "node", "runtimeExecutable": "npx", "runtimeArgs": [ "-n" ],
-      "args": [ "--", "cds", "run", "--with-mocks", "--in-memory?" ],
       "cwd": "${workspaceFolder}/packages/${input:service}",
       "console": "integratedTerminal",
+      "serverReadyAction": {
+        "pattern": "server listening on (https?://\\S+|[0-9]+)",
+        "uriFormat": "http://localhost:%s",
+        "action": "openExternally"
+      },
       "skipFiles": ["<node_internals>/**"]
     }
   ],
@@ -29,9 +31,12 @@
         "bookstore",
         "media-server",
         "office-supplies",
-        "reviews-service"
+        "orders-service",
+        "products-service",
+        "reviews-service",
+        "user-service"
       ],
-      "default": "bookshop"
+      "default": "bookstore"
     }
   ]
 }

.vscode/settings.json

@@ -1,6 +1,7 @@
 {
   "files.exclude": {
-    "**/.gitignore": true,
+    "**/.gitignore": false,
-    "**/.vscode": true
+    "**/.git": false,
+    "**/.vscode": false
   }
 }

.vscode/tasks.json

@@ -4,14 +4,23 @@
     "version": "2.0.0",
     "tasks": [
         {
-            "type": "npm", "script": "watch", "path": "packages/bookshop/",
+            "type": "shell", "label": "cds run bookshop",
-            "options": { "env": { "PORT": "4004" }},
+            "command": "npx", "args": [ "cds", "watch", "packages/bookshop" ],
-            "presentation": { "group": "A" }
+            "presentation": { "group": "A" },
+            "problemMatcher": []
         },
         {
-            "type": "npm", "script": "watch", "path": "packages/reviews-service/",
+            "type": "shell", "label": "cds run bookshop-enhanced",
-            "options": { "env": { "PORT": "5005" }},
+            "command": "npx", "args": [ "cds", "watch", "packages/bookshop-enhanced" ],
-            "presentation": { "group": "A" }
+            "presentation": { "group": "A" },
+            "problemMatcher": []
+        },
+        {
+            "type": "shell", "label": "cds run reviews-service",
+            "command": "npx", "args": [ "cds", "watch", "packages/reviews-service" ],
+            "options": {"env": { "PORT":"5005" }},
+            "presentation": { "group": "A" },
+            "problemMatcher": []
         }
     ]
 }

README.md

@@ -11,7 +11,7 @@ In SAP Business Application Studio, open a terminal.
 Then clone the repo with this specific branch:
 
 ```sh
-git clone https://github.com/sap-samples/cloud-cap-samples projects/cloud-cap-samples -b openSAP-week1-unit4-final
+git clone https://github.com/sap-samples/cloud-cap-samples projects/cloud-cap-samples -b openSAP-week4-unit3-final
 cd projects/cloud-cap-samples
 ```
 

package.json

@@ -5,24 +5,23 @@
   "author": "daniel.hutzel@sap.com",
   "private": true,
   "scripts": {
-    "lerna": "npx --no-install lerna -v > /dev/null || npm i lerna --no-save",
-    "install": "(npm -s run lerna) && lerna bootstrap --hoist",
     "cleanup": "lerna clean -y && rm -fr node_modules",
-    "bookshop": "cds watch packages/bookshop",
+    "install": "(npm -s run lerna) && lerna bootstrap --hoist",
+    "lerna": "npx --no-install lerna -v > /dev/null || npm i lerna --no-save",
+    "test": "jest",
     "bookshop-enhanced": "cds watch packages/bookshop-enhanced",
-    "reviews-service": "cds watch packages/reviews-service",
+    "bookshop": "cds watch packages/bookshop",
     "bookstore": "cds watch packages/bookstore",
-    "media-server": "cds watch packages/media-server"
+    "products-service": "cds watch packages/products-service",
+    "reviews-service": "cds watch packages/reviews-service"
   },
   "dependencies": {
     "@sap/cds": "^3",
     "express": "^4"
   },
-  "devDependencies": {
-    "sqlite3": "*"
-  },
   "--add-these-to-devDependencies-for-tests": {
     "@types/jest": "*",
+    "sqlite3": "*",
     "jest": "*"
   },
   "license": "SAP SAMPLE CODE LICENSE"

packages/bookshop/app/_i18n/i18n.properties

@@ -0,0 +1,13 @@
+Books = Books
+Book = Book
+ID = ID
+Title = Title
+Author = Author
+AuthorID = Author ID
+Stock = Stock
+Name = Name
+AuthorName = Author's Name
+Authors = Authors
+Order = Order
+Orders = Orders
+Price = Price

packages/bookshop/app/_i18n/i18n_de.properties

@@ -0,0 +1,13 @@
+Books = Bücher
+Book = Buch
+ID = ID
+Title = Titel
+Authors = Autoren
+Author = Autor
+AuthorID = ID des Autors
+AuthorName = Name des Autors
+Name = Name
+Stock = Bestand
+Order = Bestellung
+Orders = Bestellungen
+Price = Preis

packages/bookshop/app/admin/fiori-service.cds

@@ -0,0 +1,37 @@
+using AdminService from '../../srv/admin-service';
+
+////////////////////////////////////////////////////////////////////////////
+//
+//	Books Object Page
+//
+annotate AdminService.Books with @(
+	UI: {
+		Facets: [
+			{$Type: 'UI.ReferenceFacet', Label: '{i18n>General}', Target: '@UI.FieldGroup#General'},
+			{$Type: 'UI.ReferenceFacet', Label: '{i18n>Details}', Target: '@UI.FieldGroup#Details'},
+			{$Type: 'UI.ReferenceFacet', Label: '{i18n>Admin}', Target: '@UI.FieldGroup#Admin'},
+		],
+		FieldGroup#General: {
+			Data: [
+				{Value: title},
+				{Value: author_ID},
+				{Value: descr},
+			]
+		},
+		FieldGroup#Details: {
+			Data: [
+				{Value: stock},
+				{Value: price},
+				{Value: currency_code, Label: '{i18n>Currency}'},
+			]
+		},
+		FieldGroup#Admin: {
+			Data: [
+				{Value: createdBy},
+				{Value: createdAt},
+				{Value: modifiedBy},
+				{Value: modifiedAt}
+			]
+		}
+	}
+);

packages/bookshop/app/admin/webapp/Component.js

@@ -0,0 +1,22 @@
+sap.ui.define(["sap/fe/AppComponent"], ac => ac.extend("admin.Component", {
+    metadata:{ manifest:'json' }
+}))
+
+// sap.ui.define (["sap/ui/core/UIComponent"], ui5 => ui5.extend("bookshop.Component", {
+//     metadata: { manifest: "json" }
+// }))
+// sap.ui.define (["sap/ui/generic/app/AppComponent"], ui5 => ui5.extend("bookshop.Component", {
+//     metadata: { manifest: "json" }
+// }))
+
+// jQuery.sap.declare("bookshop.Component");
+// sap.ui.getCore().loadLibrary("sap.ui.generic.app");
+// jQuery.sap.require("sap.ui.generic.app.AppComponent");
+
+// sap.ui.generic.app.AppComponent.extend("bookshop.Component", {
+// 	metadata: {
+// 		manifest: "json"
+// 	}
+// });
+
+/* eslint no-undef:0 */

packages/bookshop/app/admin/webapp/i18n/i18n.properties

@@ -0,0 +1,11 @@
+# This is the resource bundle of itelo
+# __ldi.translation.uuid=c3431418-9caf-11e8-98d0-529269fb1459
+
+# JCI app descriptor contains lower case TITLE
+appTitle=Bookshop Sample
+
+# JCI app descriptor contains lower case DESCRIPTION
+appSubTitle=CAP Sample Application
+
+# JCI app descriptor contains lower case DESCRIPTION
+appDescription=CDS Sample Service

packages/bookshop/app/admin/webapp/manifest.json

@@ -0,0 +1,128 @@
+{
+    "_version": "1.8.0",
+    "sap.app": {
+        "id": "admin",
+        "type": "application",
+        "title": "Manage Books",
+        "description": "Sample Application",
+        "i18n": "i18n/i18n.properties",
+        "dataSources": {
+            "AdminService": {
+                "uri": "/admin/",
+                "type": "OData",
+                "settings": {
+                    "odataVersion": "4.0"
+                }
+            }
+        },
+        "-sourceTemplate": {
+            "id": "ui5template.basicSAPUI5ApplicationProject",
+            "-id": "ui5template.smartTemplate",
+            "-version": "1.40.12"
+        }
+    },
+    "sap.ui5": {
+        "dependencies": {
+            "libs": {
+                "sap.fe": {}
+            }
+        },
+        "models": {
+            "i18n": {
+                "type": "sap.ui.model.resource.ResourceModel",
+                "uri": "i18n/i18n.properties"
+            },
+            "": {
+                "dataSource": "AdminService",
+                "settings": {
+                    "synchronizationMode": "None",
+                    "operationMode": "Server",
+                    "autoExpandSelect" : true,
+                    "earlyRequests": true,
+                    "groupProperties": {
+                        "default": {
+                            "submit": "Auto"
+                        }
+                    }
+                }
+            }
+        },
+        "routing": {
+            "routes": [
+                {
+                    "pattern": ":?query:",
+                    "name": "BooksList",
+                    "target": "BooksList"
+                },
+                {
+                    "pattern": "Books({key}):?query:",
+                    "name": "BooksDetails",
+                    "target": "BooksDetails"
+                },
+                {
+                    "pattern": "Books({key}/author({key2}):?query:",
+                    "name": "AuthorsDetails",
+                    "target": "AuthorsDetails"
+                }
+            ],
+            "targets": {
+                "BooksList": {
+                    "type": "Component",
+                    "id": "BooksList",
+                    "name": "sap.fe.templates.ListReport",
+                    "options": {
+                        "settings" : {
+                            "entitySet" : "Books",
+                            "navigation" : {
+                                "Books" : {
+                                    "detail" : {
+                                        "route" : "BooksDetails"
+                                    }
+                                }
+                            }
+                        }
+                    }
+                },
+                "BooksDetails": {
+                    "type": "Component",
+                    "id": "BooksDetailsList",
+                    "name": "sap.fe.templates.ObjectPage",
+                    "options": {
+                        "settings" : {
+                            "entitySet" : "Books",
+                            "navigation" : {
+                                "Authors" : {
+                                    "detail" : {
+                                        "route" : "AuthorsDetails"
+                                    }
+                                }
+                            }
+                        }
+                    }
+                },
+                "AuthorsDetails": {
+                    "type": "Component",
+                    "id": "AuthorsDetailsList",
+                    "name": "sap.fe.templates.ObjectPage",
+                    "options": {
+                        "settings" : {
+                            "entitySet" : "Authors"
+                        }
+                    }
+                }
+            }
+        },
+        "contentDensities": {
+            "compact": true,
+            "cozy": true
+        }
+    },
+    "sap.ui": {
+        "technology": "UI5",
+        "fullWidth": false
+    },
+    "sap.fiori": {
+        "registrationIds": [],
+        "archeType": "transactional"
+    }
+}

packages/bookshop/app/browse/fiori-service.cds

@@ -0,0 +1,47 @@
+using CatalogService from '../../srv/cat-service';
+
+////////////////////////////////////////////////////////////////////////////
+//
+//	Books Object Page
+//
+annotate CatalogService.Books with @(
+	UI: {
+  	HeaderInfo: {
+  		Description: {Value: author}
+  	},
+		HeaderFacets: [
+			{$Type: 'UI.ReferenceFacet', Label: '{i18n>Description}', Target: '@UI.FieldGroup#Descr'},
+		],
+		Facets: [
+			{$Type: 'UI.ReferenceFacet', Label: '{i18n>Details}', Target: '@UI.FieldGroup#Price'},
+		],
+		FieldGroup#Descr: {
+			Data: [
+				{Value: descr},
+			]
+		},
+		FieldGroup#Price: {
+			Data: [
+				{Value: price},
+				{Value: currency.symbol, Label: '{i18n>Currency}'},
+			]
+		},
+	}
+);
+
+
+////////////////////////////////////////////////////////////////////////////
+//
+//	Books Object Page
+//
+annotate CatalogService.Books with @(
+	UI: {
+	  SelectionFields: [ ID, price, currency_code ],
+		LineItem: [
+			{Value: title},
+			{Value: author, Label:'{i18n>Author}'},
+			{Value: price},
+			{Value: currency.symbol, Label:' '},
+		]
+	},
+);

packages/bookshop/app/browse/webapp/Component.js

@@ -0,0 +1,22 @@
+sap.ui.define(["sap/fe/AppComponent"], ac => ac.extend("bookshop.Component", {
+    metadata:{ manifest:'json' }
+}))
+
+// sap.ui.define (["sap/ui/core/UIComponent"], ui5 => ui5.extend("bookshop.Component", {
+//     metadata: { manifest: "json" }
+// }))
+// sap.ui.define (["sap/ui/generic/app/AppComponent"], ui5 => ui5.extend("bookshop.Component", {
+//     metadata: { manifest: "json" }
+// }))
+
+// jQuery.sap.declare("bookshop.Component");
+// sap.ui.getCore().loadLibrary("sap.ui.generic.app");
+// jQuery.sap.require("sap.ui.generic.app.AppComponent");
+
+// sap.ui.generic.app.AppComponent.extend("bookshop.Component", {
+// 	metadata: {
+// 		manifest: "json"
+// 	}
+// });
+
+/* eslint no-undef:0 */

packages/bookshop/app/browse/webapp/i18n/i18n.properties

@@ -0,0 +1,11 @@
+# This is the resource bundle of itelo
+# __ldi.translation.uuid=c3431418-9caf-11e8-98d0-529269fb1459
+
+# JCI app descriptor contains lower case TITLE
+appTitle=Bookshop Sample
+
+# JCI app descriptor contains lower case DESCRIPTION
+appSubTitle=CAP Sample Application
+
+# JCI app descriptor contains lower case DESCRIPTION
+appDescription=CDS Sample Service

packages/bookshop/app/browse/webapp/manifest.json

@@ -0,0 +1,106 @@
+{
+  "_version": "1.8.0",
+  "sap.app": {
+    "id": "bookshop",
+    "type": "application",
+    "title": "Browse Books",
+    "description": "Sample Application",
+    "i18n": "i18n/i18n.properties",
+    "dataSources": {
+      "CatalogService": {
+        "uri": "/browse/",
+        "type": "OData",
+        "settings": {
+          "odataVersion": "4.0"
+        }
+      }
+    },
+    "-sourceTemplate": {
+      "id": "ui5template.basicSAPUI5ApplicationProject",
+      "-id": "ui5template.smartTemplate",
+      "-version": "1.40.12"
+    }
+  },
+  "sap.ui5": {
+    "dependencies": {
+      "libs": {
+        "sap.fe": {}
+      }
+    },
+    "models": {
+      "i18n": {
+        "type": "sap.ui.model.resource.ResourceModel",
+        "uri": "i18n/i18n.properties"
+      },
+      "": {
+        "dataSource": "CatalogService",
+        "settings": {
+          "synchronizationMode": "None",
+          "operationMode": "Server",
+          "autoExpandSelect": true,
+          "earlyRequests": true,
+          "groupProperties": {
+            "default": {
+              "submit": "Auto"
+            }
+          }
+        }
+      }
+    },
+    "routing": {
+      "routes": [
+        {
+          "pattern": ":?query:",
+          "name": "BooksList",
+          "target": "BooksList"
+        },
+        {
+          "pattern": "Books({key}):?query:",
+          "name": "BooksDetails",
+          "target": "BooksDetails"
+        }
+      ],
+      "targets": {
+        "BooksList": {
+          "type": "Component",
+          "id": "BooksList",
+          "name": "sap.fe.templates.ListReport",
+          "options": {
+            "settings": {
+              "entitySet": "Books",
+              "navigation": {
+                "Books": {
+                  "detail": {
+                    "route": "BooksDetails"
+                  }
+                }
+              }
+            }
+          }
+        },
+        "BooksDetails": {
+          "type": "Component",
+          "id": "BooksDetailsList",
+          "name": "sap.fe.templates.ObjectPage",
+          "options": {
+            "settings": {
+              "entitySet": "Books"
+            }
+          }
+        }
+      }
+    },
+    "contentDensities": {
+      "compact": true,
+      "cozy": true
+    }
+  },
+  "sap.ui": {
+    "technology": "UI5",
+    "fullWidth": false
+  },
+  "sap.fiori": {
+    "registrationIds": [],
+    "archeType": "transactional"
+  }
+}

packages/bookshop/app/common.cds

@@ -0,0 +1,74 @@
+/*
+  Common Annotations shared by all apps
+*/
+
+using { sap.capire.bookshop as my } from '../db/schema';
+
+
+////////////////////////////////////////////////////////////////////////////
+//
+//	Books Lists
+//
+annotate my.Books with @(
+	UI: {
+		Identification: [{Value:title}],
+	  SelectionFields: [ ID, author_ID, price, currency_code ],
+		LineItem: [
+			{Value: ID},
+			{Value: title},
+			{Value: author.name, Label:'{i18n>Author}'},
+			{Value: stock},
+			{Value: price},
+			{Value: currency.symbol, Label:' '},
+		]
+	}
+) {
+	author @ValueList.entity:'Authors';
+};
+
+annotate my.Authors with @(
+	UI: {
+		Identification: [{Value:name}],
+	}
+);
+
+
+////////////////////////////////////////////////////////////////////////////
+//
+//	Books Details
+//
+annotate my.Books with @(
+	UI: {
+  	HeaderInfo: {
+  		TypeName: '{i18n>Book}',
+  		TypeNamePlural: '{i18n>Books}',
+  		Title: {Value: title},
+  		Description: {Value: author.name}
+  	},
+	}
+);
+
+
+
+////////////////////////////////////////////////////////////////////////////
+//
+//	Books Elements
+//
+annotate my.Books with {
+	ID @title:'{i18n>ID}' @UI.HiddenFilter;
+	title @title:'{i18n>Title}';
+	author @title:'{i18n>AuthorID}';
+	price @title:'{i18n>Price}';
+	stock @title:'{i18n>Stock}';
+	descr @UI.MultiLineText;
+}
+
+
+////////////////////////////////////////////////////////////////////////////
+//
+//	Authors Elements
+//
+annotate my.Authors with {
+	ID @title:'{i18n>ID}' @UI.HiddenFilter;
+	name @title:'{i18n>AuthorName}';
+}

packages/bookshop/app/fiori.html

@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<html>
+<head>
+
+	<meta http-equiv="X-UA-Compatible" content="IE=edge" />
+	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
+	<meta name="viewport" content="width=device-width, initial-scale=1.0" />
+	<title>Bookshop</title>
+
+	<script>
+		window["sap-ushell-config"] = {
+			defaultRenderer: "fiori2",
+			applications: {
+				"browse-books": {
+					title: "Browse Books",
+					description: "... testing FE v42",
+					additionalInformation: "SAPUI5.Component=bookshop",
+					applicationType : "URL",
+					url: "/browse/webapp",
+					navigationMode: "embedded"
+				},
+				"manage-books": {
+					title: "Manage Books",
+					description: "... testing FE v42",
+					additionalInformation: "SAPUI5.Component=admin",
+					applicationType : "URL",
+					url: "/admin/webapp",
+					navigationMode: "embedded"
+				},
+				"manage-orders": {
+					title: "Manage Orders",
+					description: "... testing FE v42",
+					additionalInformation: "SAPUI5.Component=orders",
+					applicationType : "URL",
+					url: "/orders/webapp",
+					navigationMode: "embedded"
+				}
+			}
+		};
+	</script>
+
+	<script src="https://sapui5.hana.ondemand.com/test-resources/sap/ushell/bootstrap/sandbox.js"></script>
+	<script src="https://sapui5.hana.ondemand.com/resources/sap-ui-core.js"
+    	data-sap-ui-libs="sap.m, sap.ushell, sap.collaboration, sap.ui.layout"
+    	data-sap-ui-compatVersion="edge"
+    	data-sap-ui-theme="sap_belize"
+    	data-sap-ui-frameOptions="allow"
+	></script>
+	<script>
+		sap.ui.getCore().attachInit(()=> sap.ushell.Container.createRenderer().placeAt("content"))
+	</script>
+
+</head>
+<body class="sapUiBody" id="content"></body>
+</html>

packages/bookshop/app/index.cds

@@ -0,0 +1,8 @@
+/*
+  This model controls what gets served to Fiori frontends...
+*/
+
+using from './admin/fiori-service';
+using from './browse/fiori-service';
+using from './orders/fiori-service';
+using from './common';

packages/bookshop/app/orders/fiori-service.cds

@@ -0,0 +1,117 @@
+using AdminService from '../../srv/admin-service';
+
+annotate AdminService.Books with {
+	price @Common.FieldControl: #ReadOnly;
+}
+////////////////////////////////////////////////////////////////////////////
+//
+//	Common
+//
+annotate AdminService.OrderItems with {
+	book @(
+		Common: {
+			Text: book.title,
+			FieldControl: #Mandatory
+		},
+		ValueList.entity:'Books',
+	);
+	amount @(
+		Common.FieldControl: #Mandatory
+	);
+}
+
+
+annotate AdminService.Orders with @(
+	UI: {
+		////////////////////////////////////////////////////////////////////////////
+		//
+		//	Lists of Orders
+		//
+		SelectionFields: [ createdAt, createdBy ],
+		LineItem: [
+			{Value: createdBy, Label:'Customer'},
+			{Value: createdAt, Label:'Date'}
+		],
+		////////////////////////////////////////////////////////////////////////////
+		//
+		//	Order Details
+		//
+		HeaderInfo: {
+			TypeName: 'Order', TypeNamePlural: 'Orders',
+			Title: {
+				Label: 'Order number ', //A label is possible but it is not considered on the ObjectPage yet
+				Value: OrderNo
+			},
+			Description: {Value: createdBy}
+		},
+		Identification: [ //Is the main field group
+			{Value: createdBy, Label:'Customer'},
+			{Value: createdAt, Label:'Date'},
+			{Value: OrderNo },
+		],
+		HeaderFacets: [
+			{$Type: 'UI.ReferenceFacet', Label: '{i18n>Created}', Target: '@UI.FieldGroup#Created'},
+			{$Type: 'UI.ReferenceFacet', Label: '{i18n>Modified}', Target: '@UI.FieldGroup#Modified'},
+		],
+		Facets: [
+			{$Type: 'UI.ReferenceFacet', Label: '{i18n>Details}', Target: '@UI.FieldGroup#Details'},
+			{$Type: 'UI.ReferenceFacet', Label: '{i18n>OrderItems}', Target: 'Items/@UI.LineItem'},
+		],
+		FieldGroup#Details: {
+			Data: [
+				{Value: currency_code, Label:'Currency'}
+			]
+		},
+		FieldGroup#Created: {
+			Data: [
+				{Value: createdBy},
+				{Value: createdAt},
+			]
+		},
+		FieldGroup#Modified: {
+			Data: [
+				{Value: modifiedBy},
+				{Value: modifiedAt},
+			]
+		},
+	},
+) {
+	createdAt @UI.HiddenFilter:false;
+	createdBy @UI.HiddenFilter:false;
+};
+
+
+
+//The enity types name is AdminService.my_bookshop_OrderItems
+//The annotations below are not generated in edmx WHY?
+annotate AdminService.OrderItems with @(
+	UI: {
+		HeaderInfo: {
+			TypeName: 'Order Item', TypeNamePlural: '	',
+			Title: {
+				Value: book.title
+			},
+			Description: {Value: book.descr}
+		},
+		// There is no filterbar for items so the selctionfileds is not needed
+		SelectionFields: [ book_ID ],
+		////////////////////////////////////////////////////////////////////////////
+		//
+		//	Lists of OrderItems
+		//
+		LineItem: [
+			{Value: book_ID, Label:'Book'},
+			//The following entry is only used to have the assoication followed in the read event
+			{Value: book.price, Label:'Book Price'},
+			{Value: amount, Label:'Quantity'},
+		],
+		Identification: [ //Is the main field group
+			//{Value: ID, Label:'ID'}, //A guid shouldn't be on the UI
+			{Value: book_ID, Label:'Book'},
+			{Value: amount, Label:'Amount'},
+		],
+		Facets: [
+			{$Type: 'UI.ReferenceFacet', Label: '{i18n>OrderItems}', Target: '@UI.Identification'},
+		],
+	},
+);

packages/bookshop/app/orders/webapp/Component.js

@@ -0,0 +1,22 @@
+sap.ui.define(["sap/fe/AppComponent"], ac => ac.extend("orders.Component", {
+    metadata:{ manifest:'json' }
+}))
+
+// sap.ui.define (["sap/ui/core/UIComponent"], ui5 => ui5.extend("bookshop.Component", {
+//     metadata: { manifest: "json" }
+// }))
+// sap.ui.define (["sap/ui/generic/app/AppComponent"], ui5 => ui5.extend("bookshop.Component", {
+//     metadata: { manifest: "json" }
+// }))
+
+// jQuery.sap.declare("bookshop.Component");
+// sap.ui.getCore().loadLibrary("sap.ui.generic.app");
+// jQuery.sap.require("sap.ui.generic.app.AppComponent");
+
+// sap.ui.generic.app.AppComponent.extend("bookshop.Component", {
+// 	metadata: {
+// 		manifest: "json"
+// 	}
+// });
+
+/* eslint no-undef:0 */

packages/bookshop/app/orders/webapp/i18n/i18n.properties

@@ -0,0 +1,11 @@
+# This is the resource bundle of itelo
+# __ldi.translation.uuid=c3431418-9caf-11e8-98d0-529269fb1459
+
+# JCI app descriptor contains lower case TITLE
+appTitle=Bookshop Sample
+
+# JCI app descriptor contains lower case DESCRIPTION
+appSubTitle=CAP Sample Application
+
+# JCI app descriptor contains lower case DESCRIPTION
+appDescription=CDS Sample Service

packages/bookshop/app/orders/webapp/manifest.json

@@ -0,0 +1,170 @@
+{
+	"_version": "1.8.0",
+	"sap.app": {
+		"id": "orders",
+		"type": "application",
+		"title": "Manage Orders",
+		"description": "Sample Application",
+		"i18n": "i18n/i18n.properties",
+		"dataSources": {
+			"AdminService": {
+				"uri": "/admin/",
+				"type": "OData",
+				"settings": {
+					"odataVersion": "4.0"
+				}
+			}
+		},
+        "-sourceTemplate": {
+            "id": "ui5template.basicSAPUI5ApplicationProject",
+			"-id": "ui5template.smartTemplate",
+			"-version": "1.40.12"
+		}
+	},
+	"sap.ui5": {
+        "dependencies": {
+            "libs": {
+                "sap.fe": {}
+            }
+        },
+		"models": {
+			"i18n": {
+				"type": "sap.ui.model.resource.ResourceModel",
+				"uri": "i18n/i18n.properties"
+			},
+			"": {
+				"dataSource": "AdminService",
+				"settings": {
+                    "synchronizationMode": "None",
+                    "operationMode": "Server",
+                    "autoExpandSelect" : true,
+                    "earlyRequests": true,
+                    "groupProperties": {
+                        "default": {
+                          "submit": "Auto"
+                        }
+                    }
+				}
+			}
+		},
+        "routing": {
+            "routes": [
+                {
+                    "pattern": ":?query:",
+                    "name": "OrdersList",
+                    "target": "OrdersList"
+                },
+                {
+                    "pattern": "Orders({key}):?query:",
+                    "name": "OrdersDetails",
+                    "target": "OrdersDetails"
+                },
+                {
+                    "pattern": "Orders({boo})/Items({boo2}):?query:",
+                    "name": "OrderItemsDetails",
+                    "target": "OrderItemsDetails"
+                },
+                {
+                    "pattern": "Books({key}):?query:",
+                    "name": "BooksDetails",
+                    "target": "BooksDetails"
+                }
+            ],
+            "targets": {
+                "OrdersList": {
+                    "type": "Component",
+                    "id": "OrdersList",
+                    "name": "sap.fe.templates.ListReport",
+                    "options": {
+						"settings" : {
+							"entitySet" : "Orders",
+							"navigation" : {
+								"Orders" : {
+									"detail" : {
+										"route" : "OrdersDetails"
+										}
+								}
+							}
+						}
+					}
+                },
+                "OrdersDetails": {
+                    "type": "Component",
+                    "id": "OrdersDetails",
+                    "name": "sap.fe.templates.ObjectPage",
+                    "options": {
+                        "settings" : {
+                            "entitySet": "Orders",
+							"navigation" : {
+								"Items": {
+                                    "detail": {
+                                        "route": "OrderItemsDetails"
+                                    }
+                                },
+                                "book": {
+                                    "detail": {
+                                        "route": "BooksDetails"
+                                    }
+                                },
+                                "dummy": {
+                                    "detail": {
+                                        "route": "BooksDetails"
+                                    }
+                                }
+							}
+						}
+					}
+                },
+                "OrderItemsDetails": {
+                    "type": "Component",
+                    "id": "OrderItemsDetails",
+                    "name": "sap.fe.templates.ObjectPage",
+                    "options": {
+                        "settings" : {
+                            "entitySet": "OrderItems"
+                        }
+                    }
+                },
+                "BooksDetails": {
+                    "type": "Component",
+                    "id": "BooksDetails",
+                    "name": "sap.fe.templates.ObjectPage",
+                    "options": {
+                        "settings" : {
+                            "entitySet": "Books",
+                            "navigation": {
+                                "author": {
+                                    "detail": {
+                                        "route": "AuthorsDetails"
+                                    }
+                                }
+                            }
+                        }
+                    }                    
+                },
+                "AuthorsDetails": {
+                    "type": "Component",
+                    "id": "AuthorsDetails",
+                    "name": "sap.fe.templates.ObjectPage",
+                    "options": {
+                        "settings" : {
+                            "entitySet": "Authors"
+                        }
+                    }
+                }
+            }
+        },
+		"contentDensities": {
+			"compact": true,
+			"cozy": true
+		}
+	},
+	"sap.ui": {
+		"technology": "UI5",
+		"fullWidth": false
+	},
+	"sap.fiori": {
+		"registrationIds": [],
+		"archeType": "transactional"
+	}
+}

packages/bookshop/db/data/sap.capire.bookshop-Authors.csv

@@ -1,5 +1,5 @@
-ID;name
+ID;name;dateOfBirth;placeOfBirth;dateOfDeath;placeOfDeath
-101;Emily Brontë
+101;Emily Brontë;1818-07-30;Thornton, Yorkshire;1848-12-19;Haworth, Yorkshire
-107;Charlotte Brontë
+107;Charlotte Brontë;1818-04-21;Thornton, Yorkshire;1855-03-31;Haworth, Yorkshire
-150;Edgar Allen Poe
+150;Edgar Allen Poe;1809-01-19;Boston, Massachusetts;1849-10-07;Baltimore, Maryland
-170;Richard Carpenter
+170;Richard Carpenter;1929-08-14;King’s Lynn, Norfolk;2012-02-26;Hertfordshire, England

packages/bookshop/db/data/sap.capire.bookshop-Books.csv

@@ -1,6 +1,6 @@
-ID;title;author_ID;stock
+ID;title;descr;author_ID;stock;price;currency_code
-201;Wuthering Heights;101;12
+201;Wuthering Heights;"Wuthering Heights, Emily Brontë's only novel, was published in 1847 under the pseudonym ""Ellis Bell"". It was written between October 1845 and June 1846. Wuthering Heights and Anne Brontë's Agnes Grey were accepted by publisher Thomas Newby before the success of their sister Charlotte's novel Jane Eyre. After Emily's death, Charlotte edited the manuscript of Wuthering Heights and arranged for the edited version to be published as a posthumous second edition in 1850.";101;12;11.11;GBP
-207;Jane Eyre;107;11
+207;Jane Eyre;"Jane Eyre /ɛər/ (originally published as Jane Eyre: An Autobiography) is a novel by English writer Charlotte Brontë, published under the pen name ""Currer Bell"", on 16 October 1847, by Smith, Elder & Co. of London. The first American edition was published the following year by Harper & Brothers of New York. Primarily a bildungsroman, Jane Eyre follows the experiences of its eponymous heroine, including her growth to adulthood and her love for Mr. Rochester, the brooding master of Thornfield Hall. The novel revolutionised prose fiction in that the focus on Jane's moral and spiritual development is told through an intimate, first-person narrative, where actions and events are coloured by a psychological intensity. The book contains elements of social criticism, with a strong sense of Christian morality at its core and is considered by many to be ahead of its time because of Jane's individualistic character and how the novel approaches the topics of class, sexuality, religion and feminism.";107;11;12.34;GBP
-251;The Raven;150;333
+251;The Raven;"""The Raven"" is a narrative poem by American writer Edgar Allan Poe. First published in January 1845, the poem is often noted for its musicality, stylized language, and supernatural atmosphere. It tells of a talking raven's mysterious visit to a distraught lover, tracing the man's slow fall into madness. The lover, often identified as being a student, is lamenting the loss of his love, Lenore. Sitting on a bust of Pallas, the raven seems to further distress the protagonist with its constant repetition of the word ""Nevermore"". The poem makes use of folk, mythological, religious, and classical references.";150;333;13.13;USD
-252;Eleonora;150;555
+252;Eleonora;"""Eleonora"" is a short story by Edgar Allan Poe, first published in 1842 in Philadelphia in the literary annual The Gift. It is often regarded as somewhat autobiographical and has a relatively ""happy"" ending.";150;555;14;USD
-271;Catweazle;170;22
+271;Catweazle;Catweazle is a British fantasy television series, starring Geoffrey Bayldon in the title role, and created by Richard Carpenter for London Weekend Television. The first series, produced and directed by Quentin Lawrence, was screened in the UK on ITV in 1970. The second series, directed by David Reid and David Lane, was shown in 1971. Each series had thirteen episodes, most but not all written by Carpenter, who also published two books based on the scripts.;170;22;15;EUR

packages/bookshop/db/data/sap.capire.bookshop-Books_texts.csv

@@ -0,0 +1,4 @@
+ID;locale;title;descr
+201;de;Sturmhöhe;Sturmhöhe (Originaltitel: Wuthering Heights) ist der einzige Roman der englischen Schriftstellerin Emily Brontë (1818–1848). Der 1847 unter dem Pseudonym Ellis Bell veröffentlichte Roman wurde vom viktorianischen Publikum weitgehend abgelehnt, heute gilt er als ein Klassiker der britischen Romanliteratur des 19. Jahrhunderts.
+207;de;Jane Eyre;Jane Eyre. Eine Autobiographie (Originaltitel: Jane Eyre. An Autobiography), erstmals erschienen im Jahr 1847 unter dem Pseudonym Currer Bell, ist der erste veröffentlichte Roman der britischen Autorin Charlotte Brontë und ein Klassiker der viktorianischen Romanliteratur des 19. Jahrhunderts. Der Roman erzählt in Form einer Ich-Erzählung die Lebensgeschichte von Jane Eyre (ausgesprochen /ˌdʒeɪn ˈɛə/), die nach einer schweren Kindheit eine Stelle als Gouvernante annimmt und sich in ihren Arbeitgeber verliebt, jedoch immer wieder um ihre Freiheit und Selbstbestimmung kämpfen muss. Als klein, dünn, blass, stets schlicht dunkel gekleidet und mit strengem Mittelscheitel beschrieben, gilt die Heldin des Romans Jane Eyre nicht zuletzt aufgrund der Kino- und Fernsehversionen der melodramatischen Romanvorlage als die bekannteste englische Gouvernante der Literaturgeschichte
+252;de;Eleonora;“Eleonora” ist eine Erzählung von Edgar Allan Poe. Sie wurde 1841 erstveröffentlicht. In ihr geht es um das Paradox der Treue in der Treulosigkeit.

packages/bookshop/db/data/sap.capire.bookshop-OrderItems.csv

@@ -0,0 +1,4 @@
+ID;amount;parent_ID;book_ID;netAmount
+58040e66-1dcd-4ffb-ab10-fdce32028b79;1;7e2f2640-6866-4dcf-8f4d-3027aa831cad;201;11.11
+64e718c9-ff99-47f1-8ca3-950c850777d4;1;7e2f2640-6866-4dcf-8f4d-3027aa831cad;271;15
+e9641166-e050-4261-bfee-d1e797e6cb7f;2;64e718c9-ff99-47f1-8ca3-950c850777d4;252;28

packages/bookshop/db/data/sap.capire.bookshop-Orders.csv

@@ -0,0 +1,5 @@
+ID;modifiedAt;createdAt;createdBy;modifiedBy;OrderNo;currency_code;status
+da86efd0-4ba1-4078-b7f0-5c9c530297f7;;2019-01-31;ALICE;;1;EUR;processing
+2f2f2640-6866-4dcf-8f4d-3027aa831cad;;2019-03-25;ALICE;;10;EUR;completed
+64e718c9-ff99-47f1-8ca3-950c850777d4;;2019-01-30;BOB;;2;EUR;processing
+1af3322d-3cb1-46be-b312-0ae9ec311537;;2019-03-16;BOB;;9;EUR;completed

packages/bookshop/db/data/sap.common-Currencies.csv

@@ -0,0 +1,7 @@
+code;symbol;name;descr
+EUR;€;Euro;European Euro
+USD;$;US Dollar;United States Dollar
+CAD;$;Canadian Dollar;Canadian Dollar
+AUD;$;Australian Dollar;Australian Dollar
+GBP;£;Pound;Great Britain Pound
+ILS;₪;Shekel;Israeli New Shekel

packages/bookshop/db/data/sap.common-Currencies_texts.csv

@@ -0,0 +1,13 @@
+code;locale;name;descr
+EUR;de;Euro;European Euro
+USD;de;US-Dollar;United States Dollar
+CAD;de;Kanadischer Dollar;Kanadischer Dollar
+AUD;de;Australischer Dollar;Australischer Dollar
+GBP;de;Pfund;Britische Pfund
+ILS;de;Schekel;Israelische Schekel
+EUR;fr;euro;de la Zone euro
+USD;fr;dollar;dollar des États-Unis
+CAD;fr;dollar canadien;dollar canadien
+AUD;fr;dollar australien;dollar australien
+GBP;fr;livre sterling;pound sterling
+ILS;fr;Shekel;shekel israelien

packages/bookshop/db/schema.cds

@@ -1,5 +1,16 @@
 namespace sap.capire.bookshop;
-using { Currency, managed } from '@sap/cds/common';
+
+using {
+  Currency,
+  managed,
+  cuid
+} from '@sap/cds/common';
+
+type Status : String enum {
+  completed;
+  processing;
+  blocked;
+}
 
 entity Books : managed {
   key ID       : Integer;
@@ -7,24 +18,33 @@ entity Books : managed {
       descr    : localized String(1111);
       author   : Association to Authors;
       stock    : Integer;
-  price    : Decimal(9,2);
+      price    : Decimal(9, 2);
       currency : Currency;
 }
 
 entity Authors : managed {
   key ID           : Integer;
       name         : String(111);
-  books    : Association to many Books on books.author = $self;
+      dateOfBirth  : Date;
+      dateOfDeath  : Date;
+      placeOfBirth : String;
+      placeOfDeath : String;
+      books        : Association to many Books
+                       on books.author = $self;
 }
 
-entity Orders : managed {
+entity Orders : cuid, managed {
-  key ID   : UUID;
+  OrderNo  : String       @title : 'Order Number'; //> readable key
-  OrderNo  : String @title:'Order Number'; //> readable key
+   status   : Status default 'processing';
-  Items    : Composition of many OrderItems on Items.parent = $self;
+   Items    : Composition of many OrderItems
+               on Items.parent = $self;
+  total    : Decimal(9, 2)@readonly;
+  currency : Currency;
 }
-entity OrderItems {
+
-  key ID   : UUID;
+entity OrderItems : cuid {
   parent    : Association to Orders;
   book      : Association to Books;
   amount    : Integer;
+  netAmount : Decimal(9, 2);
 }

packages/bookshop/package.json

@@ -1,14 +1,32 @@
 {
-  "name": "bookshop",
+  "name": "@sap/capire-bookshop",
   "version": "1.0.0",
-  "description": "A simple CAP project.",
+  "description": "A simple bookshop application, build in a self-contained all-in-one fashion, i.e. w/o reusing other packages.",
-  "repository": "<Add your repository here>",
+  "license": "SAP SAMPLE CODE LICENSE",
-  "license": "ISC",
   "dependencies": {
     "@sap/cds": "^3",
-    "express": "^4"
+    "express": "^4",
+    "@sap/xb-msg-amqp-v100": "^0.9.35"
+  },
+  "devDependencies": {
+    "sqlite3": "^4.1.1"
   },
   "scripts": {
     "start": "npx cds run"
+  },
+  "cds": {
+    "requires": {
+      "API_BUSINESS_PARTNER": {
+        "kind": "odata",
+        "model": "srv/external/API_BUSINESS_PARTNER",
+        "--credentials": {
+          "prefix": "sap/S4HANAOD/c098/BO",
+          "destination": "cap-api098"
+        }
+      },
+      "--messaging": {
+        "kind": "enterprise-messaging"
+      }
+    }
   }
 }

packages/bookshop/req.http

@@ -0,0 +1,6 @@
+PATCH http://localhost:4004/api-business-partner/A_BusinessPartner('ALICE')
+Content-Type: application/json
+
+{
+    "BusinessPartnerIsBlocked": true
+}

packages/bookshop/sample requests.http

@@ -1,12 +0,0 @@
-### Submit Orders
-POST http://localhost:4004/browse/Orders
-Content-Type: application/json
-
-{ "OrderNo":"2019-09...", "Items":[
-    { "book_ID":201, "amount":5 }
-]}
-
-# Sending this three times should result in a 409: 5 exceeds stock for book #201
-
-### Check books entity that stock was reduced
-GET http://localhost:4004/admin/Books(201)

packages/bookshop/srv/admin-service.cds

@@ -1,6 +1,16 @@
 using { sap.capire.bookshop as my } from '../db/schema';
-service AdminService @(_requires:'admin',path:'/admin') {
+
+service AdminService @(_requires:'authenticated-user') {
   entity Books as projection on my.Books;
   entity Authors as projection on my.Authors;
   entity Orders as select from my.Orders;
 }
+
+// Enable Fiori Draft for Orders
+annotate AdminService.Orders with @odata.draft.enabled;
+// annotate AdminService.Books with @odata.draft.enabled;
+
+// Temporary workaround -> https://github.wdf.sap.corp/cap/issues/issues/3121
+extend service AdminService with {
+  entity OrderItems as select from my.OrderItems;
+}

packages/bookshop/srv/cat-service.cds

@@ -1,10 +1,26 @@
 using { sap.capire.bookshop as my } from '../db/schema';
-service CatalogService @(path:'/browse') {
+using { API_BUSINESS_PARTNER as external } from './external/API_BUSINESS_PARTNER.csn';
+
+@path:'/browse'
+service CatalogService {
 
   @readonly entity Books as SELECT from my.Books {*,
     author.name as author
   } excluding { createdBy, modifiedBy };
 
+  @readonly entity BusinessPartners as projection on external.A_BusinessPartner {
+    key BusinessPartner as ID,
+    FirstName,
+    MiddleName,
+    LastName,
+    BusinessPartnerIsBlocked
+  };
+
+  event OrderBlocked {
+    ID: UUID;
+  };
+
   @requires_: 'authenticated-user'
   @insertonly entity Orders as projection on my.Orders;
+
 }

packages/bookshop/srv/cat-service.js

@@ -1,28 +1,41 @@
-/**
+const cds = require('@sap/cds')
- * Implementation for CatalogService defined in ./cat-service.cds
- */
-module.exports = (srv)=>{
 
-  // Use reflection to get the csn definition of Books
+/** Service implementation for CatalogService */
-  const {Books} = cds.entities
+module.exports = cds.service.impl(async function () {
+  const { Books, Orders, BusinessPartners } = this.entities
+  const bupaSrv = await cds.connect.to('API_BUSINESS_PARTNER')
+  this.after('READ', Books, each => each.stock > 111 && _addDiscount2(each, 11))
+  this.before('CREATE', Orders, _reduceStock)
+  this.on('READ', BusinessPartners, req => bupaSrv.tx(req).run(req.query))
 
-  // Add some discount for overstocked books
+  /** Block orders if business partner is blocked */
-  srv.after ('READ','Books', (each)=>{
+  bupaSrv.on('BusinessPartner/Changed', async msg => {
-    if (each.stock > 111) each.title += ' -- 11% discount!'
+    console.log('>> Received BusinessPartner/Changed', msg.data)
+    const BUSINESSPARTNER = msg.data.KEY[0].BUSINESSPARTNER
+    const tx = cds.tx(msg)
+    const orders = await tx.run(SELECT('ID').from(Orders).where({ createdBy: BUSINESSPARTNER, status: 'processing' }))
+    if (!orders.length) return
+    const businessPartner = await bupaSrv.tx(msg).run(SELECT.one('BusinessPartnerIsBlocked').from(BusinessPartners).where({ ID: BUSINESSPARTNER }))
+    if (!businessPartner || !businessPartner.BusinessPartnerIsBlocked) return
+    await Promise.all(orders.map(order => tx.run(UPDATE(Orders).where(order).set({ status: 'blocked' }))))
+    orders.forEach(order => this.emit('OrderBlocked', order) && console.log('>> Emitted OrderBlocked', order))
   })
 
-  // Reduce stock of books upon incoming orders
+  /** Add some discount for overstocked books */
-  srv.before ('CREATE','Orders', async (req)=>{
+  function _addDiscount2(each, discount) {
-    const tx = cds.transaction(req), order = req.data;
+    each.title += ` -- ${discount}% discount!`
-    if (order.Items) {
-      const affectedRows = await tx.run(order.Items.map(item =>
-        UPDATE(Books) .where({ID:item.book_ID})
-          .and(`stock >=`, item.amount)
-          .set(`stock -=`, item.amount)
-        )
-      )
-      if (affectedRows.some(row => !row)) req.error(409, 'Sold out, sorry')
   }
-  })
 
-}
+  /** Reduce stock of ordered books if available stock suffices */
+  async function _reduceStock(req) {
+    const { Items: OrderItems } = req.data
+    return cds.transaction(req).run(() => OrderItems.map(order =>
+      UPDATE(Books).set('stock -=', order.amount)
+        .where('ID =', order.book_ID).and('stock >=', order.amount)
+    )).then(all => all.forEach((affectedRows, i) => {
+      if (affectedRows === 0) req.error(409,
+        `${OrderItems[i].amount} exceeds stock for book #${OrderItems[i].book_ID}`
+      )
+    }))
+  }
+})

packages/bookshop/srv/external/API_BUSINESS_PARTNER.js

@@ -0,0 +1,9 @@
+module.exports = srv => {
+    srv.on(['CREATE', 'UPDATE', 'DELETE'], req => {
+        const payload = {
+            KEY: [{ BUSINESSPARTNER: req.data.BusinessPartner }]
+        }
+        srv.emit('BusinessPartner/Changed', payload)
+        console.log('<< Emitted BusinessPartner/Changed', payload)
+    })
+}

packages/bookshop/srv/external/data/API_BUSINESS_PARTNER-A_BusinessPartner.csv

@@ -0,0 +1,4 @@
+BusinessPartner;FirstName;MiddleName;LastName;BusinessPartnerIsBlocked
+ALICE;Alice;In;Wonderland;false
+BOB;Bob;The;Builder;false
+JABBA;Jabba;The;Hutt;true

packages/bookshop/tests/bookshop.http

@@ -0,0 +1,18 @@
+### Service Document
+GET http://localhost:4004/browse
+
+### Service $metadata document
+GET http://localhost:4004/browse/$metadata
+
+### Browsing Books
+GET http://localhost:4004/browse/Books?
+# &$select=title,author
+# &$expand=currency
+# &sap-language=de
+
+### Browsing Authors
+GET http://localhost:4004/admin/Authors?
+# &$select=name,dateOfBirth,placeOfBirth
+# &$expand=books($select=title;$expand=currency)
+# &$filter=ID eq 101
+# &sap-language=de

packages/bookshop/tests/orders.http

@@ -0,0 +1,18 @@
+
+### 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