merged from master

* Copyied from fiori/app/admin
* Added Supplier + Value Help + Texts
* Fixed bug in replication handler that caused to return wrong data

.github/workflows/node.js.yml

@@ -5,9 +5,9 @@ name: CI
 
 on:
   push:
-    branches: [ main ]
+    branches: [ master ]
   pull_request:
-    branches: [ main ]
+    branches: [ master ]
 
 jobs:
   build:

.tours/db-native.tour

@@ -105,5 +105,5 @@
       "description": "### Summary\n\nThat's it!  You have seen: \n- How to integrate database-specific functions in a CDS model.\n- How to switch between the two implementations for SQLite and SAP HANA."
     }
   ],
-  "ref": "main"
+  "ref": "master"
 }

README.md

@@ -17,7 +17,7 @@ Find here a collection of samples for the [SAP Cloud Application Programming Mod
 
 ### Download
 
-If you've [Git](https://git-scm.com/downloads) installed, clone this repo as shown below, otherwise [download as ZIP file](archive/main.zip).
+If you've [Git](https://git-scm.com/downloads) installed, clone this repo as shown below, otherwise [download as ZIP file](archive/master.zip).
 
 ```sh
 git clone https://github.com/sap-samples/cloud-cap-samples samples
@@ -84,3 +84,35 @@ In case you've a question, find a bug, or otherwise need support, use our [commu
 ## License
 
 Copyright (c) 2021 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, version 2.0 except as noted otherwise in the [LICENSE](LICENSE.txt) file.
+
+# Suppliers - in progress for Messaging & Service Consumption -
+
+## TODOs
+
+1. Fix issues when running in same process
+2. Automated tests
+
+## Usage
+
+1. Run:
+
+   ```
+   CDS_ENV=local-hybrid cds mock API_BUSINESS_PARTNER -p 5001
+   ```
+
+2. Wait until startup is completed
+3. Run in a 2nd terminal:
+
+   ```
+   CDS_ENV=local-hybrid cds serve all --with-mocks --in-memory
+   ```
+
+4. Now, you can issues the requests listed in `suppliers/requests.http`
+
+## Request Sequence
+
+* TODO
+## URLs
+
+* Get books with their replicated supplier: http://localhost:4004/browse/Books?$expand=supplier
+* Get remote suppliers: http://localhost:4004/admin/Suppliers?$top=11

bookshop/app/vue/app.js

@@ -10,7 +10,7 @@ const books = new Vue ({
     data: {
         list: [],
         book: undefined,
-        order: { quantity:1, succeeded:'', failed:'' }
+        order: { amount:1, succeeded:'', failed:'' }
     },
 
     methods: {
@@ -26,18 +26,18 @@ const books = new Vue ({
             const book = books.book = books.list [eve.currentTarget.rowIndex-1]
             const res = await GET(`/Books/${book.ID}?$select=descr,stock,image`)
             Object.assign (book, res.data)
-            books.order = { quantity:1 }
+            books.order = { amount:1 }
             setTimeout (()=> $('form > input').focus(), 111)
         },
 
         async submitOrder () {
-            const {book,order} = books, quantity = parseInt (order.quantity) || 1 // REVISIT: Okra should be less strict
+            const {book,order} = books, amount = parseInt (order.amount) || 1 // REVISIT: Okra should be less strict
             try {
-                const res = await POST(`/submitOrder`, { quantity, book: book.ID })
+                const res = await POST(`/submitOrder`, { amount, book: book.ID })
                 book.stock = res.data.stock
-                books.order = { quantity, succeeded: `Successfully ordered ${quantity} item(s).` }
+                books.order = { amount, succeeded: `Successfully ordered ${amount} item(s).` }
             } catch (e) {
-                books.order = { quantity, failed: e.response.data.error.message }
+                books.order = { amount, failed: e.response.data.error.message }
             }
         }
 

bookshop/app/vue/index.html

@@ -48,7 +48,7 @@
                {{ book.stock }} in stock
         </label>
         <form @submit.prevent="submitOrder" style="float:right; display:flex; flex-direction:row-reverse">
-            <input type="number" v-model="order.quantity" v-bind:class="{ failed: order.failed }" style="width:5em">
+            <input type="number" v-model="order.amount" v-bind:class="{ failed: order.failed }" style="width:5em">
             <input type="submit" value="Order:" class="muted-button">
         </form>
         <h4> {{ book.title }} </h4>

bookshop/srv/cat-service.cds

@@ -2,8 +2,9 @@ using { sap.capire.bookshop as my } from '../db/schema';
 service CatalogService @(path:'/browse') {
 
   /** For displaying lists of Books */
-  @readonly entity ListOfBooks as projection on Books
+  @readonly entity ListOfBooks as projection on Books {
-  excluding { descr };
+    ID, title, author, genre, price, currency
+  }
 
   /** For display in details pages */
   @readonly entity Books as projection on my.Books { *,
@@ -11,6 +12,6 @@ service CatalogService @(path:'/browse') {
   } excluding { createdBy, modifiedBy };
 
   @requires: 'authenticated-user'
-  action submitOrder ( book: Books:ID, quantity: Integer ) returns { stock: Integer };
+  action submitOrder ( book: Books:ID, amount: Integer ) returns { stock: Integer };
-  event OrderedBook : { book: Books:ID; quantity: Integer; buyer: String };
+  event OrderedBook : { book: Books:ID; amount: Integer; buyer: String };
 }

bookshop/srv/cat-service.js

@@ -5,14 +5,14 @@ class CatalogService extends cds.ApplicationService { init(){
 
   // Reduce stock of ordered books if available stock suffices
   this.on ('submitOrder', async req => {
-    const {book,quantity} = req.data
+    const {book,amount} = req.data
     let {stock} = await SELECT `stock` .from (Books,book)
-    if (stock >= quantity) {
+    if (stock >= amount) {
-      await UPDATE (Books,book) .with (`stock -=`, quantity)
+      await UPDATE (Books,book) .with (`stock -=`, amount)
-      await this.emit ('OrderedBook', { book, quantity, buyer:req.user.id })
+      await this.emit ('OrderedBook', { book, amount, buyer:req.user.id })
       return { stock }
     }
-    else return req.error (409,`${quantity} exceeds stock for book #${book}`)
+    else return req.error (409,`${amount} exceeds stock for book #${book}`)
   })
 
   // Add some discount for overstocked books

bookshop/test/requests.http

@@ -71,7 +71,7 @@ POST {{server}}/browse/submitOrder
 Content-Type: application/json
 {{me}}
 
-{ "book":201, "quantity":5 }
+{ "book":201, "amount":5 }
 
 
 ### ------------------------------------------------------------------------

fiori/.env

@@ -1,2 +1,2 @@
-# cds.requires.messaging.kind = file-based-messaging
+cds.requires.messaging.kind = file-based-messaging
 PORT = 4004

fiori/app/admin/fiori-service.cds

@@ -1,4 +1,4 @@
-using { AdminService } from '../../db/schema';
+using { AdminService, sap.capire.bookshop } from '../../db/schema';
 using from '../common'; // to help UI linter get the complete annotations
 
 ////////////////////////////////////////////////////////////////////////////
@@ -87,8 +87,9 @@ annotate AdminService.Books.texts with @(
 annotate AdminService.Books.texts {
 	locale @ValueList:{entity:'Languages',type:#fixed}
 }
-// In addition we need to expose Languages through AdminService as a target for ValueList
+// In addition we need to expose Languages and Books.texts through AdminService
 using { sap } from '@sap/cds/common';
 extend service AdminService {
-	@readonly entity Languages as projection on sap.common.Languages;
+	entity Languages as projection on sap.common.Languages;
+	entity Books.texts as projection on bookshop.Books.texts;
 }

fiori/app/bookshop.html

@@ -1,3 +0,0 @@
-<head>
-  <meta http-equiv="refresh" content="0;url=bookshop/index.html">
-</head>

fiori/app/browse/fiori-service.cds

@@ -6,11 +6,11 @@ using CatalogService from '@capire/bookshop';
 //
 annotate CatalogService.Books with @(
 	UI: {
-		HeaderInfo: {
+  	HeaderInfo: {
 			TypeName: 'Book',
 			TypeNamePlural: 'Books',
-			Description: {Value: author}
+  		Description: {Value: author}
-		},
+  	},
 		HeaderFacets: [
 			{$Type: 'UI.ReferenceFacet', Label: '{i18n>Description}', Target: '@UI.FieldGroup#Descr'},
 		],
@@ -38,7 +38,7 @@ annotate CatalogService.Books with @(
 //
 annotate CatalogService.Books with @(
 	UI: {
-		SelectionFields: [ ID, price, currency_code ],
+	  SelectionFields: [ ID, price, currency_code ],
 		LineItem: [
 			{Value: title},
 			{Value: author, Label:'{i18n>Author}'},

fiori/app/reviews.html

@@ -1,3 +0,0 @@
-<head>
-  <meta http-equiv="refresh" content="0;url=reviews/index.html">
-</head>

fiori/package.json

@@ -3,10 +3,11 @@
   "version": "1.0.0",
   "dependencies": {
     "@capire/bookshop": "*",
-    "@capire/reviews": "*",
-    "@capire/orders": "*",
     "@capire/common": "*",
-    "@sap/cds": "^5",
+    "@capire/orders": "*",
+    "@capire/reviews": "*",
+    "@capire/suppliers": "*",
+    "@sap/cds": ">=5",
     "express": "^4.17.1",
     "passport": "^0.4.1"
   },
@@ -19,6 +20,10 @@
       "deploy-format": "hdbtable"
     },
     "requires": {
+      "API_BUSINESS_PARTNER": {
+        "kind": "odata",
+        "model": "@capire/suppliers"
+      },
       "auth": {
         "strategy": "dummy"
       },

fiori/server.js

@@ -2,24 +2,15 @@ const cds = require ('@sap/cds')
 module.exports = cds.server
 
 cds.once('bootstrap',(app)=>{
-  app.use ('/orders/webapp', _from('@capire/orders/app/orders/webapp/manifest.json'))
+  app.serve ('/orders/webapp').from('@capire/orders','app/orders/webapp')
-  app.use ('/bookshop', _from('@capire/bookshop/app/vue/index.html'))
+  app.serve ('/bookshop').from('@capire/bookshop','app/vue')
-  app.use ('/reviews', _from('@capire/reviews/app/vue/index.html'))
+  app.serve ('/reviews').from('@capire/reviews','app/vue')
 })
 
 cds.once('served', require('./srv/mashup'))
+cds.once('served', require('@capire/suppliers/srv/mashup'))
 
 // Swagger UI - see https://cap.cloud.sap/docs/advanced/openapi
-try {
+if (process.env.NODE_ENV !== 'production') {
-  const cds_swagger = require ('cds-swagger-ui-express')
+  cds.once ('bootstrap', app => app.use (require ('cds-swagger-ui-express')()) )
-  cds.once ('bootstrap', app => app.use (cds_swagger()) )
-} catch (err) {
-  if (err.code !== 'MODULE_NOT_FOUND')  throw err
 }
-
-
-// -----------------------------------------------------------------------
-// Helper for serving static content from npm-installed packages
-const {static} = require('express')
-const {dirname} = require('path')
-const _from = target => static (dirname (require.resolve(target)))

fiori/srv/mashup.cds

@@ -3,17 +3,17 @@
 //    Mashing up imported models...
 //
 
-using { sap.capire.bookshop.Books } from '@capire/bookshop';
-
 //
 //  Extend Books with access to Reviews and average ratings
 //
 
+using { CatalogService.ListOfBooks, sap.capire.bookshop.Books } from '@capire/bookshop';
 using { ReviewsService.Reviews } from '@capire/reviews';
 extend Books with {
   reviews : Composition of many Reviews on reviews.subject = $self.ID;
-  rating  : Decimal;
+  rating  : Reviews:rating;
 }
+extend projection ListOfBooks with { rating }
 
 //
 //  Extend Orders with Books as Products

fiori/srv/mashup.js

@@ -27,11 +27,11 @@ module.exports = async()=>{ // called by server.js
   // Create an order with the OrdersService when CatalogService signals a new order
   //
   CatalogService.on ('OrderedBook', async (msg) => {
-    const { book, quantity, buyer } = msg.data
+    const { book, amount, buyer } = msg.data
     const { title, price } = await db.tx(msg).read (Books, book, b => { b.title, b.price })
     return OrdersService.tx(msg).create ('Orders').entries({
       OrderNo: 'Order at '+ (new Date).toLocaleString(),
-      Items: [{ product:{ID:`${book}`}, title, price, quantity }],
+      Items: [{ product:{ID:`${book}`}, title, price, amount }],
       buyer, createdBy: buyer
     })
   })
@@ -51,9 +51,9 @@ module.exports = async()=>{ // called by server.js
   //
   OrdersService.on ('OrderChanged', (msg) => {
     console.debug ('> received:', msg.event, msg.data)
-    const { product, deltaQuantity } = msg.data
+    const { product, deltaAmount } = msg.data
     return UPDATE (Books) .where ('ID =', product)
-    .and ('stock >=', deltaQuantity)
+    .and ('stock >=', deltaAmount)
-    .set ('stock -=', deltaQuantity)
+    .set ('stock -=', deltaAmount)
   })
 }

hello/README.md

@@ -1,15 +0,0 @@
-# Hello World Getting Started Sample
-
-## Next Steps
-
-- To run the JavaScript implementation, open a new terminal and run `cds watch`.
-- To run the TypeScript implementation, open a new terminal and run `cds-ts watch`.
-
-Then call the service at: http://localhost:4004/say/hello(to='world')
-
-## Learn More
-
-Learn more about:
-
-- [Hello World!](https://cap.cloud.sap/docs/get-started/hello-world)
-- [Using TypeScript](https://cap.cloud.sap/docs/get-started/using-typescript)

hello/package.json

@@ -3,8 +3,8 @@
   "version": "1.0.0",
   "scripts": {
     "test": "npx jest --silent",
-    "start": "cds serve srv/world.cds",
+    "watch": "cds serve world.cds",
-    "start:ts": "cds-ts serve srv/world.cds"
+    "watch:ts": "cds-ts serve world.cds"
   },
   "devDependencies": {
     "@types/jest": "^26.0.23",
@@ -25,30 +25,5 @@
         }
       }
     }
-  },
-  "eslintConfig": {
-    "extends": "eslint:recommended",
-    "env": {
-      "es2020": true,
-      "node": true,
-      "jest": true,
-      "mocha": true
-    },
-    "globals": {
-      "SELECT": true,
-      "INSERT": true,
-      "UPDATE": true,
-      "DELETE": true,
-      "CREATE": true,
-      "DROP": true,
-      "CDL": true,
-      "CQL": true,
-      "CXL": true,
-      "cds": true
-    },
-    "rules": {
-      "no-console": "off",
-      "require-atomic-updates": "off"
-    }
   }
 }

hello/srv/world.ts

@@ -1,5 +0,0 @@
-module.exports = class say {
-    hello(req: any) {
-        return `Hello ${req.data.to} from a TypeScript file!`
-    }
-}

hello/test/hello-world-ts.test.ts

@@ -2,7 +2,7 @@ process.env.CDS_TYPESCRIPT = 'true';
 import * as cds from '@sap/cds';
 
 //@ts-ignore
-const {GET} = cds.test.in(__dirname,'../srv').run('serve', 'world.cds');
+const {GET} = cds.test.in(__dirname,'..').run('serve', 'world.cds');
 
 describe('Hello world!', () => {
     afterAll(() => { delete process.env.CDS_TYPESCRIPT; });

hello/world.ts

@@ -0,0 +1,5 @@
+module.exports = class say {
+    hello(req: any) {
+        return `Hello ${req.data.to} from a typescript file!`
+    }
+}

orders/app/orders/fiori-service.cds

@@ -45,8 +45,7 @@ annotate OrdersService.Orders with @(
 		],
 		FieldGroup#Details: {
 			Data: [
-				{Value: currency.code, Label:'Currency'},
+				{Value: currency.code, Label:'Currency'}
-				{Value: status.code, Label:'Status'},
 			]
 		},
 		FieldGroup#Created: {
@@ -67,9 +66,6 @@ annotate OrdersService.Orders with @(
 	createdBy @UI.HiddenFilter:false;
 };
 
-annotate OrdersService.OrderStatus with {
-	code @Common: { Text: name,  TextArrangement: #TextOnly };
-}
 
 
 annotate OrdersService.Orders_Items with @(
@@ -78,10 +74,10 @@ annotate OrdersService.Orders_Items with @(
 			{Value: product_ID, Label:'Product ID'},
 			{Value: title, Label:'Product Title'},
 			{Value: price, Label:'Unit Price'},
-			{Value: quantity, Label:'Quantity'},
+			{Value: amount, Label:'Quantity'},
 		],
 		Identification: [ //Is the main field group
-			{Value: quantity, Label:'Quantity'},
+			{Value: amount, Label:'Amount'},
 			{Value: title, Label:'Product'},
 			{Value: price, Label:'Unit Price'},
 		],
@@ -90,7 +86,7 @@ annotate OrdersService.Orders_Items with @(
 		],
 	},
 ) {
-	quantity @(
+	amount @(
 		Common.FieldControl: #Mandatory
 	);
 };

orders/db/data/sap.capire.orders-OrderStatus.csv

@@ -1,4 +0,0 @@
-code;name;descr
-O;Open;Order is open
-P;In Process;Order is about to be processed
-C;Closed;Order is closed

orders/db/data/sap.capire.orders-Orders.csv

@@ -1,3 +1,3 @@
-ID;createdAt;createdBy;buyer;OrderNo;currency_code;status_code
+ID;createdAt;createdBy;buyer;OrderNo;currency_code
-7e2f2640-6866-4dcf-8f4d-3027aa831cad;2019-01-31;john.doe@test.com;john.doe@test.com;1;EUR;O
+7e2f2640-6866-4dcf-8f4d-3027aa831cad;2019-01-31;john.doe@test.com;john.doe@test.com;1;EUR
-64e718c9-ff99-47f1-8ca3-950c850777d4;2019-01-30;jane.doe@test.com;jane.doe@test.com;2;EUR;C
+64e718c9-ff99-47f1-8ca3-950c850777d4;2019-01-30;jane.doe@test.com;jane.doe@test.com;2;EUR

orders/db/data/sap.capire.orders-Orders_Items.csv

@@ -1,4 +1,4 @@
-ID;up__ID;quantity;product_ID;title;price
+ID;up__ID;amount;product_ID;title;price
 58040e66-1dcd-4ffb-ab10-fdce32028b79;7e2f2640-6866-4dcf-8f4d-3027aa831cad;1;201;Wuthering Heights;11.11
 64e718c9-ff99-47f1-8ca3-950c850777d4;7e2f2640-6866-4dcf-8f4d-3027aa831cad;1;271;Catweazle;15
 e9641166-e050-4261-bfee-d1e797e6cb7f;64e718c9-ff99-47f1-8ca3-950c850777d4;2;252;Eleonora;28

orders/db/schema.cds

@@ -1,4 +1,4 @@
-using { Currency, User, managed, cuid, sap.common.CodeList } from '@sap/cds/common';
+using { Currency, User, managed, cuid } from '@sap/cds/common';
 namespace sap.capire.orders;
 
 entity Orders : cuid, managed {
@@ -6,17 +6,13 @@ entity Orders : cuid, managed {
   Items    : Composition of many Orders_Items on Items.up_ = $self;
   buyer    : User;
   currency : Currency;
-  status   : Association to OrderStatus;
 }
 
-@cds.persistence.data.kind: 'config'
-entity OrderStatus : CodeList { key code: String(1) }
-
 entity Orders_Items {
   key ID    : UUID;
   up_       : Association to Orders;
   product   : Association to Products @assert.integrity:false; // REVISIT: this is a temporary workaround for a glitch in cds-runtime
-  quantity  : Integer;
+  amount    : Integer;
   title     : String; //> intentionally replicated as snapshot from product.title
   price     : Double;
 }

orders/srv/orders-service.js

@@ -7,30 +7,30 @@ class OrdersService extends cds.ApplicationService {
 
     this.before ('UPDATE', 'Orders', async function(req) {
       const { ID, Items } = req.data
-      if (Items) for (let { product_ID, quantity } of Items) {
+      if (Items) for (let { product_ID, amount } of Items) {
-        const { quantity:before } = await cds.tx(req).run (
+        const { amount:before } = await cds.tx(req).run (
-          SELECT.one.from (OrderItems, oi => oi.quantity) .where ({up__ID:ID, product_ID})
+          SELECT.one.from (OrderItems, oi => oi.amount) .where ({up__ID:ID, product_ID})
         )
-        if (quantity != before) await this.orderChanged (product_ID, quantity-before)
+        if (amount != before) await this.orderChanged (product_ID, amount-before)
       }
     })
 
     this.before ('DELETE', 'Orders', async function(req) {
       const { ID } = req.data
       const Items = await cds.tx(req).run (
-        SELECT.from (OrderItems, oi => { oi.product_ID, oi.quantity }) .where ({up__ID:ID})
+        SELECT.from (OrderItems, oi => { oi.product_ID, oi.amount }) .where ({up__ID:ID})
       )
-      if (Items) await Promise.all (Items.map(it => this.orderChanged (it.product_ID, -it.quantity)))
+      if (Items) await Promise.all (Items.map(it => this.orderChanged (it.product_ID, -it.amount)))
     })
 
     return super.init()
   }
 
   /** order changed -> broadcast event */
-  orderChanged (product, deltaQuantity) {
+  orderChanged (product, deltaAmount) {
     // Emit events to inform subscribers about changes in orders
-    console.log ('> emitting:', 'OrderChanged', { product, deltaQuantity })
+    console.log ('> emitting:', 'OrderChanged', { product, deltaAmount })
-    return this.emit ('OrderChanged', { product, deltaQuantity })
+    return this.emit ('OrderChanged', { product, deltaAmount })
   }
 
 }

package.json

@@ -12,32 +12,31 @@
     "@capire/media": "./media",
     "@capire/orders": "./orders",
     "@capire/reviews": "./reviews",
-    "@sap/cds": "^5.5.3"
+    "@capire/suppliers": "./suppliers",
+    "@sap/cds": "^5",
+    "express": "^4"
   },
   "devDependencies": {
-    "chai": "^4.3.4",
+    "cds-swagger-ui-express": "^0.2.0",
+    "chai": "^4.2.0",
     "chai-as-promised": "^7.1.1",
     "chai-subset": "^1.6.0",
-    "sqlite3": "^5"
+    "sqlite3": "^5.0.0"
   },
   "scripts": {
     "cleanup": "rm -rf node_modules && rm -rf */node_modules && rm -rf */*/node_modules",
     "registry": "node .registry/server.js",
     "bookshop": "cds watch bookshop",
     "fiori": "cds watch fiori",
-    "hello": "cds watch hello",
     "media": "cds watch media",
     "mocha": "npx mocha || echo",
     "jest": "npx jest",
-    "test": "npm run jest -- --silent",
+    "test": "npm run jest --silent && npm run test:hello",
     "test:hello": "cd hello && npm test"
   },
   "jest": {
     "testEnvironment": "node",
-    "testTimeout": 20000,
+    "testMatch": ["**/*.test.js"]
-    "testMatch": [
-      "**/*.test.js"
-    ]
   },
   "mocha": {
     "parallel": true

reviews/srv/reviews-service.cds

@@ -8,9 +8,9 @@ service ReviewsService {
   action unlike (review: type of Reviews:ID);
 
   // Async API
-   event reviewed : {
+   event reviewed : projection on Reviews {
-     subject: type of Reviews:subject;
+     subject, //> recieved new reviews
-     rating: Decimal(2,1)
+     rating  //> new avg rating
    }
 
   // Input validation

reviews/test/bookshop/.env

@@ -0,0 +1,2 @@
+cds.requires.messaging.kind = file-based-messaging
+PORT = 4004

reviews/test/bookshop/package.json

@@ -0,0 +1,19 @@
+{
+  "name": "@capire/fiori",
+  "version": "1.0.0",
+  "dependencies": {
+    "@capire/bookshop": "*",
+    "@capire/reviews": "*",
+    "@sap/cds": "^5",
+    "express": "^4.17.1"
+  },
+  "cds": {
+    "requires": {
+      "auth": { "strategy": "dummy" },
+      "ReviewsService": {
+        "kind": "odata",
+        "model": "@capire/reviews"
+      }
+    }
+  }
+}

reviews/test/bookshop/server.js

@@ -0,0 +1,20 @@
+const cds = require ('@sap/cds')
+
+cds.once('bootstrap',(app)=>{
+  // Delegate to imported apps (reviews only when mocked)
+  app.serve ('/bookshop').from ('@capire/bookshop','app/vue')
+  app.serve ('/reviews',).from ('@capire/reviews','app/vue')
+})
+
+cds.once('served', async ()=>{
+  // Update Books' average ratings when ReviewsService signals updated reviews
+  const ReviewsService = await cds.connect.to ('ReviewsService')
+  ReviewsService.on ('reviewed', (msg) => {
+    console.debug ('> received:', msg.event, msg.data)
+    const { subject, rating } = msg.data
+    return UPDATE('Books',subject).with({rating})
+  })
+
+})
+
+module.exports = cds.server

reviews/test/bookshop/services.cds

@@ -0,0 +1,11 @@
+namespace sap.capire.bookshop; //> allows UPDATE('Books')...
+//
+//  Extend Books with access to Reviews and average ratings
+//
+using { CatalogService.ListOfBooks, sap.capire.bookshop.Books } from '@capire/bookshop';
+using { ReviewsService.Reviews } from '@capire/reviews';
+extend Books with {
+  reviews : Composition of many Reviews on reviews.subject = $self.ID;
+  rating  : Reviews:rating;
+}
+extend projection ListOfBooks with { rating }

samples.md

@@ -50,14 +50,22 @@ Each sub directory essentially is an individual npm package arranged in an [all-
 - Late-cut Micro Services
 - As well as managed data, input validations, and authorization
 
+## [@capire/suppliers](suppliers)
+
+- Shows how to integrate remote services, in this case the BusinessPartner service from SAP S/4HANA.
+- Extending [@capire/bookshop](bookshop) with suppliers from SAP S/4HANA
+- Providing that as a pre-built integration & extension package
+- Used in [@capire/fiori](fiori)
+
 
 ## [@capire/fiori](fiori)
 
 - A [composite app, reusing and combining](https://cap.cloud.sap/docs/guides/verticalize) these packages:
   - [@capire/bookshop](bookshop)
-  - [@capire/reviews](reviews)
-  - [@capire/orders](orders)
   - [@capire/common](common)
+  - [@capire/orders](orders)
+  - [@capire/reviews](reviews)
+  - [@capire/suppliers](suppliers)
 - [Adds an SAP Fiori elements application](https://cap.cloud.sap/docs/guides/fiori/) to bookshop, thereby introducing to:
   - [OData Annotations](https://cap.cloud.sap/docs/guides/fiori#adding-odata-annotations) in `.cds` files
   - Support for [Fiori Draft](https://cap.cloud.sap/docs/guides/fiori#draft)

suppliers/.env

@@ -0,0 +1 @@
+PORT = 4006

suppliers/app/_i18n/i18n.properties

@@ -0,0 +1,31 @@
+Books = Books
+Book = Book
+ID = ID
+Title = Title
+Author = Author
+AuthorID = Author ID
+Stock = Stock
+Name = Name
+AuthorName = Author's Name
+DateOfBirth = Date of Birth
+DateOfDeath = Date of Death
+PlaceOfBirth = Place of Birth
+PlaceOfDeath = Place of Death
+Age = Age
+Authors = Authors
+Order = Order
+Orders = Orders
+Price = Price
+
+Genre = Genre
+Genres = Genres
+SubGenres = Sub Genres
+
+NumCode = Numeric Code
+MinorUnit = Minor Unit
+Exponent = Exponent
+
+Supplier = Supplier
+SupplierName = Supplier Name
+Id = Id
+Name = Name

suppliers/app/_i18n/i18n_de.properties

@@ -0,0 +1,18 @@
+Books = Bücher
+Book = Buch
+ID = ID
+Title = Titel
+Authors = Autoren
+Author = Autor
+AuthorID = ID des Autors
+AuthorName = Name des Autors
+Age = Alter
+Name = Name
+Stock = Bestand
+Order = Bestellung
+Orders = Bestellungen
+Price = Preis
+Supplier = Lieferant
+SupplierName = Lieferantenname
+Id = Id
+Name = Name

suppliers/app/admin-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: "w/ SAP Fiori Elements",
+					additionalInformation: "SAPUI5.Component=bookshop",
+					applicationType : "URL",
+					url: "/browse/webapp",
+					navigationMode: "embedded"
+				},
+				"manage-books": {
+					title: "Manage Books",
+					description: "w/ SAP Fiori Elements",
+					additionalInformation: "SAPUI5.Component=admin",
+					applicationType : "URL",
+					url: "/admin/webapp",
+					navigationMode: "embedded"
+				},
+				"manage-orders": {
+					title: "Manage Orders",
+					description: "w/ SAP Fiori Elements",
+					additionalInformation: "SAPUI5.Component=orders",
+					applicationType : "URL",
+					url: "/orders/webapp",
+					navigationMode: "embedded"
+				}
+			}
+		};
+	</script>
+
+	<script id="sap-ushell-bootstrap" src="https://sapui5.hana.ondemand.com/test-resources/sap/ushell/bootstrap/sandbox.js"></script>
+	<script id="sap-ui-bootstrap" 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_fiori_3"
+    	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>

suppliers/app/admin/fiori-service.cds

@@ -0,0 +1,105 @@
+//using { AdminService } from '../../db/schema';
+
+////////////////////////////////////////////////////////////////////////////
+//
+//	Books Object Page
+//
+
+annotate AdminService.Books with @(
+	UI: {
+		Facets: [
+			{$Type: 'UI.ReferenceFacet', Label: '{i18n>General}', Target: '@UI.FieldGroup#General'},
+			{$Type: 'UI.ReferenceFacet', Label: '{i18n>Translations}', Target:  'texts/@UI.LineItem'},
+			{$Type: 'UI.ReferenceFacet', Label: '{i18n>Details}', Target: '@UI.FieldGroup#Details'},
+			{$Type: 'UI.ReferenceFacet', Label: '{i18n>Supplier}', Target: '@UI.FieldGroup#Supplier'},
+			{$Type: 'UI.ReferenceFacet', Label: '{i18n>Admin}', Target: '@UI.FieldGroup#Admin'},
+		],
+		FieldGroup#General: {
+			Data: [
+				{Value: title},
+				{Value: author_ID},
+				{Value: genre_ID},
+				{Value: descr},
+			]
+		},
+		FieldGroup#Details: {
+			Data: [
+				{Value: stock},
+				{Value: price},
+				{Value: currency_code, Label: '{i18n>Currency}'},
+			]
+		},
+		FieldGroup#Supplier: {
+			Data: [
+				{Value: supplier_ID, Label: '{i18n>Id}'},
+				{Value: supplier.name, Label: '{i18n>Name}'}
+			]
+		},
+		FieldGroup#Admin: {
+			Data: [
+				{Value: createdBy},
+				{Value: createdAt},
+				{Value: modifiedBy},
+				{Value: modifiedAt}
+			]
+		}
+	}
+);
+
+annotate AdminService.Authors with @(
+	UI: {
+		HeaderInfo: {
+			Description: {Value: lifetime}
+		},
+		Facets: [
+			{$Type: 'UI.ReferenceFacet', Label: '{i18n>Details}', Target: '@UI.FieldGroup#Details'},
+			{$Type: 'UI.ReferenceFacet', Label: '{i18n>Books}', Target: 'books/@UI.LineItem'},
+		],
+		FieldGroup#Details: {
+			Data: [
+				{Value: placeOfBirth},
+				{Value: placeOfDeath},
+				{Value: dateOfBirth},
+				{Value: dateOfDeath},
+				{Value: age, Label: '{i18n>Age}'},
+			]
+		},
+	}
+);
+
+
+
+////////////////////////////////////////////////////////////
+//
+//  Draft for Localized Data
+//
+
+annotate sap.capire.bookshop.Books with @fiori.draft.enabled;
+annotate AdminService.Books with @odata.draft.enabled;
+
+annotate AdminService.Books.texts with @(
+	UI: {
+		Identification: [{Value:title}],
+		SelectionFields: [ locale, title ],
+		LineItem: [
+			{Value: locale, Label: 'Locale'},
+			{Value: title, Label: 'Title'},
+			{Value: descr, Label: 'Description'}
+		]
+	}
+);
+
+// Add Value Help for Locales
+annotate AdminService.Books.texts {
+	locale @ValueList:{entity:'Languages',type:#fixed}
+}
+// In addition we need to expose Languages through AdminService
+using { sap } from '@sap/cds/common';
+extend service AdminService {
+	entity Languages as projection on sap.common.Languages;
+}
+
+annotate AdminService.Suppliers with
+	@(Capabilities.SearchRestrictions : {
+    	Searchable : false
+});

suppliers/app/admin/webapp/Component.js

@@ -0,0 +1,8 @@
+sap.ui.define(["sap/fe/core/AppComponent"], function(AppComponent) {
+	"use strict";
+	return AppComponent.extend("admin.Component", {
+		metadata: { manifest: "json" }
+	});
+});
+
+/* eslint no-undef:0 */

suppliers/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

suppliers/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.templates": {}
+            }
+        },
+        "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"
+    }
+}

suppliers/app/common.cds

@@ -0,0 +1,265 @@
+/*
+	Common Annotations shared by all apps
+*/
+
+using { sap.capire.bookshop as my } from '@capire/bookshop';
+using { sap.common } from '@capire/common';
+
+////////////////////////////////////////////////////////////////////////////
+//
+//	Books Lists
+//
+annotate my.Books with @(
+	Common.SemanticKey: [title],
+	UI: {
+		Identification: [{Value:title}],
+		SelectionFields: [ ID, author_ID, price, currency_code, supplier.ID, supplier.name ],
+		LineItem: [
+			{Value: ID},
+			{Value: title},
+			{Value: author.name, Label:'{i18n>Author}'},
+			{Value: genre.name},
+			{Value: stock},
+			{Value: price},
+			{Value: currency.symbol, Label:' '},
+			{Value: supplier.ID},
+			{Value: supplier.name}
+		]
+	}
+) {
+	author @ValueList.entity:'Authors';
+};
+
+////////////////////////////////////////////////////////////////////////////
+//
+//	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}';
+	genre  @title:'{i18n>Genre}'  @Common: { Text: genre.name,  TextArrangement: #TextOnly };
+	author @title:'{i18n>Author}' @Common: { Text: author.name, TextArrangement: #TextOnly };
+	price @title:'{i18n>Price}' @Measures.ISOCurrency: currency_code;
+	stock @title:'{i18n>Stock}';
+	descr @UI.MultiLineText;
+	supplier_ID @title:'{i18n>Supplier}';
+}
+
+annotate my.Suppliers with {
+	name @title:'{i18n>SupplierName}';
+	ID @title:'{i18n>Supplier}';
+}
+
+////////////////////////////////////////////////////////////////////////////
+//
+//	Genres List
+//
+annotate my.Genres with @(
+	Common.SemanticKey: [name],
+	UI: {
+		SelectionFields: [ name ],
+		LineItem:[
+			{Value: name},
+			{Value: parent.name, Label: 'Main Genre'},
+		],
+	}
+);
+
+////////////////////////////////////////////////////////////////////////////
+//
+//	Genre Details
+//
+annotate my.Genres with @(
+	UI: {
+		Identification: [{Value:name}],
+		HeaderInfo: {
+			TypeName: '{i18n>Genre}',
+			TypeNamePlural: '{i18n>Genres}',
+			Title: {Value: name},
+			Description: {Value: ID}
+		},
+		Facets: [
+			{$Type: 'UI.ReferenceFacet', Label: '{i18n>SubGenres}', Target: 'children/@UI.LineItem'},
+		],
+	}
+);
+
+////////////////////////////////////////////////////////////////////////////
+//
+//	Genres Elements
+//
+annotate my.Genres with {
+	ID  @title: '{i18n>ID}';
+	name  @title: '{i18n>Genre}';
+}
+
+////////////////////////////////////////////////////////////////////////////
+//
+//	Authors List
+//
+annotate my.Authors with @(
+	Common.SemanticKey: [name],
+	UI: {
+		Identification: [{Value:name}],
+		SelectionFields: [ name ],
+		LineItem:[
+			{Value: ID},
+			{Value: name},
+			{Value: dateOfBirth},
+			{Value: dateOfDeath},
+			{Value: placeOfBirth},
+			{Value: placeOfDeath},
+		],
+	}
+);
+
+////////////////////////////////////////////////////////////////////////////
+//
+//	Author Details
+//
+annotate my.Authors with @(
+	UI: {
+		HeaderInfo: {
+			TypeName: '{i18n>Author}',
+			TypeNamePlural: '{i18n>Authors}',
+			Title: {Value: name},
+			Description: {Value: dateOfBirth}
+		},
+		Facets: [
+			{$Type: 'UI.ReferenceFacet', Target: 'books/@UI.LineItem'},
+		],
+	}
+);
+
+
+////////////////////////////////////////////////////////////////////////////
+//
+//	Authors Elements
+//
+annotate my.Authors with {
+	ID @title:'{i18n>ID}' @UI.HiddenFilter;
+	name @title:'{i18n>Name}';
+	dateOfBirth @title:'{i18n>DateOfBirth}';
+	dateOfDeath @title:'{i18n>DateOfDeath}';
+	placeOfBirth @title:'{i18n>PlaceOfBirth}';
+	placeOfDeath @title:'{i18n>PlaceOfDeath}';
+}
+
+////////////////////////////////////////////////////////////////////////////
+//
+//	Languages List
+//
+annotate common.Languages with @(
+	Common.SemanticKey: [code],
+	Identification: [{Value:code}],
+	UI: {
+		SelectionFields: [ name, descr ],
+		LineItem:[
+			{Value: code},
+			{Value: name},
+		],
+	}
+);
+
+////////////////////////////////////////////////////////////////////////////
+//
+//	Language Details
+//
+annotate common.Languages with @(
+	UI: {
+		HeaderInfo: {
+			TypeName: '{i18n>Language}',
+			TypeNamePlural: '{i18n>Languages}',
+			Title: {Value: name},
+			Description: {Value: descr}
+		},
+		Facets: [
+			{$Type: 'UI.ReferenceFacet', Label: '{i18n>Details}', Target: '@UI.FieldGroup#Details'},
+		],
+		FieldGroup#Details: {
+			Data: [
+				{Value: code},
+				{Value: name},
+				{Value: descr}
+			]
+		},
+	}
+);
+
+////////////////////////////////////////////////////////////////////////////
+//
+//	Currencies List
+//
+annotate common.Currencies with @(
+	Common.SemanticKey: [code],
+	Identification: [{Value:code}],
+	UI: {
+		SelectionFields: [ name, descr ],
+		LineItem:[
+			{Value: descr},
+			{Value: symbol},
+			{Value: code},
+		],
+	}
+);
+
+////////////////////////////////////////////////////////////////////////////
+//
+//	Currency Details
+//
+annotate common.Currencies with @(
+	UI: {
+		HeaderInfo: {
+			TypeName: '{i18n>Currency}',
+			TypeNamePlural: '{i18n>Currencies}',
+			Title: {Value: descr},
+			Description: {Value: code}
+		},
+		Facets: [
+			{$Type: 'UI.ReferenceFacet', Label: '{i18n>Details}', Target: '@UI.FieldGroup#Details'},
+			{$Type: 'UI.ReferenceFacet', Label: '{i18n>Extended}', Target: '@UI.FieldGroup#Extended'},
+		],
+		FieldGroup#Details: {
+			Data: [
+				{Value: name},
+				{Value: symbol},
+				{Value: code},
+				{Value: descr}
+			]
+		},
+		FieldGroup#Extended: {
+			Data: [
+				{Value: numcode},
+				{Value: minor},
+				{Value: exponent}
+			]
+		},
+	}
+);
+
+////////////////////////////////////////////////////////////////////////////
+//
+//	Currencies Elements
+//
+annotate common.Currencies with {
+	numcode @title:'{i18n>NumCode}';
+	minor @title:'{i18n>MinorUnit}';
+	exponent @title:'{i18n>Exponent}';
+}

suppliers/app/services.cds

@@ -0,0 +1,12 @@
+/*
+  This model controls what gets served to Fiori frontends...
+*/
+
+using from './admin/fiori-service';
+//using from './browse/fiori-service';
+using from './common';
+
+using from '@capire/common';
+
+// only works in case of embedded orders service
+using from '@capire/orders/app/orders/fiori-service';

suppliers/index.cds

@@ -0,0 +1 @@
+using from './srv/mashup';

suppliers/model.drawio

@@ -0,0 +1 @@
+<mxfile host="Electron" modified="2021-06-16T08:41:31.745Z" agent="5.0 (Macintosh; Intel Mac OS X 11_4_0) AppleWebKit/537.36 (KHTML, like Gecko) draw.io/14.6.13 Chrome/89.0.4389.128 Electron/12.0.7 Safari/537.36" etag="keOnkQccb51SB06o_xsB" version="14.6.13" type="device"><diagram id="kIZwyAu_b989F7xyfxsf" name="Page-1">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</diagram></mxfile>

suppliers/package.json

@@ -0,0 +1,40 @@
+{
+  "name": "@capire/suppliers",
+  "version": "1.0.0",
+  "description": "Shows integration with SAP S/4HANA, in turn provided as a reusable extension package to bookshop.",
+  "private": true,
+  "dependencies": {
+    "@capire/common": "*",
+    "@sap/cds": ">=4",
+    "express": "^4"
+  },
+  "scripts": {
+    "start": "cds run --in-memory?",
+    "watch": "cds watch",
+    "mocked-s4": "cds mock API_BUSINESS_PARTNER"
+  },
+  "cds": {
+    "requires": {
+      "API_BUSINESS_PARTNER": {
+        "kind": "odata",
+        "model": "srv/external/API_BUSINESS_PARTNER",
+        "[hybrid]": {
+          "credentials": {
+            "destination": "cap-api098",
+            "path": "/sap/opu/odata/sap/API_BUSINESS_PARTNER"
+          }
+        }
+      },
+      "[local-hybrid]": {
+        "messaging": {
+          "kind": "file-based-messaging"
+        }
+      },
+      "[hybrid]": {
+        "messaging": {
+          "kind": "enterprise-messaging-shared"
+        }
+      }
+    }
+  }
+}

suppliers/requests.http

@@ -0,0 +1,51 @@
+
+@server = http://localhost:4006
+@bpServer = http://localhost:5001
+@authAlice = Authorization: Basic alice:
+
+###
+### Replication on changed Business Partner
+###
+
+### 1. Check supplier name before update ("A Company Making Everything")
+
+GET {{server}}/admin/Books(299)?$expand=supplier
+{{authAlice}}
+
+### 2. Change Business Partner -> Triggers event that updates supplier replication
+
+PATCH {{bpServer}}/api-business-partner/A_BusinessPartner('ACME')
+Content-Type: application/json
+
+{
+    "BusinessPartnerFullName": "A Company Making Everything *better*"
+}
+
+### 3. Check supplier name after update ("A Company Making Everything *better*")
+
+GET {{server}}/admin/Books(299)?$expand=supplier
+{{authAlice}}
+
+###
+### Replication on new assigned supplier
+###
+
+### 1. No supplier is assigned to "Wuthering Heights"
+
+GET {{server}}/admin/Books(201)?$expand=supplier
+{{authAlice}}
+
+### 2. Assign supplier ID "PNG"
+
+PATCH {{server}}/admin/Books(201)
+{{authAlice}}
+Content-Type: application/json
+
+{
+    "supplier_ID": "PNG"
+}
+
+### 3. Supplier information is replicated
+
+GET {{server}}/admin/Books(201)?$expand=supplier
+{{authAlice}}

suppliers/server.js

@@ -0,0 +1,3 @@
+const cds = require ('@sap/cds')
+cds.once('served', require('./srv/mashup'))
+module.exports = cds.server

suppliers/srv/data/sap.capire.bookshop-Books.csv

@@ -0,0 +1,2 @@
+ID;title;descr;author_ID;stock;price;currency_code;genre_ID;supplier_ID;
+299;Mobby Dick;"""Moby-Dick""" or """The Whale""" is an 1851 novel by American writer Herman Melville. The book is the sailor Ishmael's narrative of the obsessive quest of Ahab, captain of the whaling ship Pequod, for revenge on Moby Dick, the giant white sperm whale that on the ship's previous voyage bit off Ahab's leg at the knee. A contribution to the literature of the American Renaissance, Moby-Dick was published to mixed reviews, was a commercial failure, and was out of print at the time of the author's death in 1891.;105;99;15.20;GBP;11;ACME

suppliers/srv/data/sap.capire.bookshop-Suppliers.csv

@@ -0,0 +1,3 @@
+ID;name
+ACME;A Company Making Everything (replicated)
+

suppliers/srv/external/API_BUSINESS_PARTNER.js

@@ -0,0 +1,10 @@
+const cds = require('@sap/cds');
+
+module.exports = cds.service.impl(function () {
+  const { A_BusinessPartner } = this.entities;
+
+  // https://api.sap.com/event/SAPS4HANACloudBusinessEvents_BusinessPartner/resource
+  this.after('UPDATE', A_BusinessPartner, async data => {
+    await this.emit("BusinessPartner.Changed", { BusinessPartner: data.BusinessPartner });
+  });
+});

suppliers/srv/external/data/API_BUSINESS_PARTNER-A_BusinessPartner.csv

@@ -0,0 +1,7 @@
+BusinessPartner;BusinessPartnerFullName
+ACME;A Company Making Everything
+B4U;Books for You
+S&C;Shakespeare & Co.
+WSL;Waterstones
+TLD;Thalia
+PNG;Penguin Books

suppliers/srv/mashup.cds

@@ -0,0 +1,72 @@
+using { API_BUSINESS_PARTNER as S4 } from './external/API_BUSINESS_PARTNER.csn';
+using { CatalogService, sap.capire.bookshop.Books } from '@capire/bookshop';
+namespace sap.capire.bookshop;
+
+
+/**
+  Add projections to external entities to capture the subset of fields we're
+  actually interested in. This fosters both: (a) minimized network traffic as
+  well as (b) options to dynamically add extension fields by SaaS tenants.
+ */
+entity Suppliers as projection on S4.A_BusinessPartner {
+    key BusinessPartner as ID,
+    BusinessPartnerFullName as name,
+    // to_BusinessPartnerAddress[1: ValidityStartDate <= $now and $now < ValidityEndDate].CityName,
+    // to_BusinessPartnerAddress[1: ValidityStartDate <= $now and $now < ValidityEndDate].Country,
+}
+
+
+/**
+  We can mashup entities from external services, or projections thereof, with
+  our project's own entities, e.g. by adding relationships as below.
+ */
+extend Books with {
+  supplier : Association to Suppliers;
+}
+
+
+/*
+  Optionally expose external entities through own services, e.g. for Value Helps,
+  or to display details fetched on demand.
+  For this to work, we need to delegate the respective calls addressed to our
+  services into calls to the external service.
+ */
+extend service AdminService with {
+  @cds.odata.valuelist
+  entity Suppliers as projection on bookshop.Suppliers;
+}
+
+
+/*
+  Optionally add local persistency to replicate data for fast access,
+  e.g. to display lists containing remote data.
+ */
+annotate Suppliers with @cds.persistence: {table,skip:false};
+
+
+/**
+  Having locally cached replicas also allows to display supplier data in lists
+  of books, which otherwise would generate unwanted traffic on S4 backends.
+ */
+extend projection CatalogService.ListOfBooks with {
+  supplier.name as supplier
+}
+
+
+/**
+  Optionally declare events emitted from the source, but not included in
+  imported APIs (e.g. as in case of EDMXes from API Hub).
+
+  This allows CAP's advanced support for events and messaging to kick in,
+  e.g. to automatically emit to and subscribe to events from message brokers
+  behind the scenes.
+
+  Note: as sync and async APIs from S/4 sources are not correlated, we have
+  to specify the event type names, e.g. as be found at:
+  https://api.sap.com/event/SAPS4HANACloudBusinessEvents_BusinessPartner/resource
+ */
+extend service S4 {
+  event BusinessPartner.Changed @(type: 'sap.s4.beh.businesspartner.v1.BusinessPartner.Changed.v1') {
+    BusinessPartner: S4.A_BusinessPartner:BusinessPartner;
+  }
+}

suppliers/srv/mashup.js

@@ -0,0 +1,50 @@
+////////////////////////////////////////////////////////////////////////////
+//
+//    Mashing up provided and required services...
+//
+module.exports = async()=>{ // called by server.js
+
+  if (!cds.services.AdminService) return //> mocking S4 service only
+
+  // Connect to services we want to mashup below...
+  const S4bupa = await cds.connect.to('API_BUSINESS_PARTNER')   //> external S4 service
+  const admin = await cds.connect.to('AdminService')            //> local domain service
+  const db = await cds.connect.to('db')                         //> our primary database
+
+  // Reflect CDS definition of the Suppliers entity
+  const { Suppliers }  = db.entities
+
+  admin.prepend (()=>{ //> to ensure our .on handlers below go before the default ones
+
+    // Delegate Value Help reads for Suppliers to S4 backend
+    admin.on ('READ', 'Suppliers', req => {
+      console.log ('>> delegating to S4 service...')
+      return S4bupa.run(req.query)
+    })
+
+    // Replicate Supplier data when edited Books have suppliers
+    admin.after (['CREATE','UPDATE'], 'Books', async data => {
+      const { supplier_ID: ID } = data
+      if (ID) {
+        let replicated = await db.exists (Suppliers,ID)
+        if (!replicated) { // initially replicate Supplier info
+            let supplier = await S4bupa.read (Suppliers,ID)
+            await INSERT(supplier) .into (Suppliers)
+        }
+      }
+    })
+
+  })
+
+  // Subscribe to changes in the S4 origin of Suppliers data
+  S4bupa.on ('BusinessPartner.Changed', async msg => { //> would be great if we had batch events from S/4
+    console.log(">>", msg.event, msg.data)
+    const ID = msg.data.BusinessPartner;
+    let replicated = await db.exists (Suppliers,ID)
+    if (replicated) { // update replicated Supplier info
+      let supplier = await S4bupa.read (Suppliers,ID)
+      await UPDATE(Suppliers,ID) .with (supplier)
+    }
+  })
+
+}

test/cds.events.test.js

@@ -0,0 +1,22 @@
+const cds = require ('@sap/cds/lib')
+const { expect } = cds.test.in (__dirname)
+
+describe('cds.events tests', ()=>{
+
+  let m; before (async ()=> m = await cds.load('events.cds'))
+
+  it ('should have the model loaded', ()=>{
+    expect(m.definitions).to.have.property('Sue.Foo')
+  })
+
+  it ('should compile the model to edmx', ()=>{
+    const edmx = cds.compile(m).to.edmx({service:'Sue'})
+    expect(edmx).to.match(/<EntitySet Name="Foo" EntityType="Sue.Foo"\/>/)
+  })
+
+  it ('should compile the model to sql', ()=>{
+    const sql = cds.compile(m).to.sql().join(';\n')
+    expect(sql).not.to.match(/CREATE TABLE Sue_Foo/)
+    expect(sql).to.match(/CREATE TABLE Sue_Bar/)
+  })
+})

test/cds.ql.test.js

@@ -1,194 +1,207 @@
+const { expect } = require('../test')
 const cds = require('@sap/cds/lib')
-const { expect } = cds.test
+const CQL = ([cql]) => cds.parse.cql(cql)
-const { cdr } = cds.ql
 const Foo = { name: 'Foo' }
 const Books = { name: 'capire.bookshop.Books' }
 
+const { parse:cdr } = cds.ql
 
-const STAR = cdr ? '*' : { ref: ['*'] }
+// while jest has 'test' as alias to 'it', mocha doesn't
-const skip = {to:{eql:()=>skip}}
+if (!global.test) global.test = it
-const srv = new cds.Service
-let cqn
-
-expect.plain = (cqn) => !cqn.SELECT.one && !cqn.SELECT.distinct ? expect(cqn) : skip
-expect.one = (cqn) => !cqn.SELECT.distinct ? expect(cqn) : skip
 
 describe('cds.ql → cqn', () => {
   //
+  let cqn
 
-  for (let each of ['SELECT', 'SELECT one', 'SELECT distinct']) {
+  describe.skip(`BUGS + GAPS...`, () => {
-    let SELECT; beforeEach(()=> SELECT = (
-      each === 'SELECT distinct' ? cds.ql.SELECT.distinct :
-      each === 'SELECT one' ? cds.ql.SELECT.one :
-      cds.ql.SELECT
-    ))
-  describe(`${each}...`, () => {
 
-    test(`from Foo`, () => {
+    it('should consistently handle *', () => {
-      expect(cqn = SELECT `from Foo`)
+      expect({
-      .to.eql(SELECT.from `Foo`)
+        SELECT: { from: { ref: ['Foo'] }, columns: ['*'] },
-      .to.eql(SELECT.from('Foo'))
+      })
-      .to.eql(SELECT.from(Foo))
+      .to.eql(CQL`SELECT * from Foo`)
-      .to.eql(SELECT`Foo`)
+      .to.eql(CQL`SELECT from Foo{*}`)
-      .to.eql(SELECT('Foo'))
+      .to.eql(SELECT('*').from(Foo))
-      .to.eql(SELECT(Foo))
+      .to.eql(SELECT.from(Foo,['*']))
-      expect.plain(cqn)
+    })
-      .to.eql(CQL`SELECT from Foo`)
+
-      .to.eql(srv.read `Foo`)
+
-      .to.eql(srv.read('Foo'))
+    it('should consistently handle lists', () => {
-      .to.eql(srv.read(Foo))
+      const ID = 11,  args = [`foo`, "'bar'", 3]
-      .to.eql({
+      const cqn = CQL`SELECT from Foo where ID=11 and x in (foo,'bar',3)`
+      expect(SELECT.from(Foo).where(`ID=${ID} and x in (${args})`)).to.eql(cqn)
+      expect(SELECT.from(Foo).where(`ID=`, ID, `and x in`, args)).to.eql(cqn)
+      expect(SELECT.from(Foo).where({ ID, x:args })).to.eql(cqn)
+    })
+
+  })
+
+
+  describe(`SELECT...`, () => {
+    test('from ( Foo )', () => {
+      expect({
         SELECT: { from: { ref: ['Foo'] } },
       })
+      .to.eql(CQL`SELECT from Foo`)
+      .to.eql(SELECT.from(Foo))
     })
 
-
+    test('from ( ..., <key>)', () => {
-    test('from Foo [<key>]', () => {
+      // Compiler
-
+      expect(CQL`SELECT from Foo[11]`).to.eql({
-      expect(cqn = SELECT`from Foo[11]`)
-      .to.eql(SELECT`from Foo[${11}]`)
-      .to.eql(SELECT.from `Foo[11]`)
-      .to.eql(SELECT.from `Foo[${11}]`)
-      .to.eql(SELECT`Foo[11]`)
-      expect.plain(cqn)
-      .to.eql(CQL`SELECT from Foo[11]`)
-      .to.eql(srv.read`Foo[11]`)
-      .to.eql({
-        SELECT: { from: {
-          ref: [{ id: 'Foo', where: [{ val: 11 }] }]
-        }},
-      })
-
-      if (cdr) expect.plain (cqn)
-      .to.eql(srv.read`Foo[${11}]`)
-      .to.eql(SELECT`Foo[${11}]`)
-
-      expect((cqn = SELECT`from Foo[ID=11]`))
-      .to.eql(SELECT`from Foo[ID=${11}]`)
-      .to.eql(SELECT.from `Foo[ID=11]`)
-      .to.eql(SELECT.from `Foo[ID=${11}]`)
-      .to.eql(SELECT`Foo[ID=11]`)
-      expect.plain(cqn)
-      .to.eql(CQL`SELECT from Foo[ID=11]`)
-      .to.eql(srv.read`Foo[ID=11]`)
-      .to.eql({
-        SELECT: { from: {
-          ref: [{ id: 'Foo', where: [{ ref: ['ID'] }, '=', { val: 11 }] }],
-        }},
-      })
-
-      if (cdr) expect.plain (cqn)
-      .to.eql(SELECT`Foo[ID=${11}]`)
-      .to.eql(srv.read`Foo[ID=${11}]`)
-
-      // Following implicitly resolve to SELECT.one
-      expect(cqn = SELECT.from(Foo,11))
-      .to.eql(SELECT.from(Foo,{ID:11}))
-      .to.eql(SELECT.from(Foo).byKey(11))
-      .to.eql(SELECT.from(Foo).byKey({ID:11}))
-      expect.one(cqn)
-      .to.eql({
         SELECT: {
-          one: true,
+          // REVISIT: add one:true?
-          from: { ref: ['Foo'] },
+          from: { ref: [{ id: 'Foo', where: [{ val: 11 }] }] },
-          where: [{ ref: ['ID'] }, '=', { val: 11 }],
         },
       })
 
-    })
+      expect(CQL`SELECT from Foo[ID=11]`).to.eql({
-
-    test('from Foo {...}', () => {
-
-      expect(cqn = SELECT `*,a,b as c` .from `Foo`)
-      .to.eql(SELECT `*,a,b as c`. from(Foo))
-      .to.eql(SELECT('*','a',{b:'c'}).from`Foo`)
-      .to.eql(SELECT('*','a',{b:'c'}).from(Foo))
-      .to.eql(SELECT(['*','a',{b:'c'}]).from(Foo))
-      .to.eql(SELECT.columns('*','a',{b:'c'}).from(Foo))
-      .to.eql(SELECT.columns(['*','a',{b:'c'}]).from(Foo))
-      .to.eql(SELECT.columns((foo) => { foo`.*`, foo.a, foo.b`as c` }).from(Foo))
-      .to.eql(SELECT.columns((foo) => { foo('*'), foo.a, foo.b.as('c') }).from(Foo))
-      .to.eql(SELECT.from(Foo).columns('*','a',{b:'c'}))
-      .to.eql(SELECT.from(Foo).columns(['*','a',{b:'c'}]))
-      .to.eql(SELECT.from(Foo).columns((foo) => { foo`.*`, foo.a, foo.b`as c` }))
-      .to.eql(SELECT.from(Foo).columns((foo) => { foo('*'), foo.a, foo.b.as('c') }))
-      .to.eql(SELECT.from(Foo,['*','a',{b:'c'}]))
-      .to.eql(SELECT.from(Foo, (foo) => { foo`.*`, foo.a, foo.b`as c` }))
-      .to.eql(SELECT.from(Foo, (foo) => { foo('*'), foo.a, foo.b.as('c') }))
-
-      expect.plain(cqn)
-      .to.eql({
         SELECT: {
-          from: { ref: ['Foo'] },
+          // REVISIT: add one:true
-          columns: [ STAR, { ref: ['a'] }, { ref: ['b'], as: 'c' }],
+          from: {
+            ref: [{ id: 'Foo', where: [{ ref: ['ID'] }, '=', { val: 11 }] }],
+          },
         },
       })
 
-      cdr && expect.plain(cqn)
+      // Runtime ds.ql
-      .to.eql(CQL`SELECT *,a,b as c from Foo`)
+      expect(SELECT.from(Foo, 11))
-      .to.eql(CQL`SELECT from Foo {*,a,b as c}`)
+        .to.eql(SELECT.from(Foo, { ID: 11 }))
-
+        .to.eql(SELECT.from(Foo).byKey(11))
-      // Test combination with key as second argument to .from
+        .to.eql(SELECT.from(Foo).byKey({ ID: 11 }))
-      expect(cqn = SELECT.from(Foo, 11, ['a']))
+        .to.eql(SELECT.one.from(Foo).where({ ID: 11 }))
-      .to.eql(SELECT.from(Foo, 11, foo => foo.a))
+        .to.eql({
-      expect.one(cqn)
+          // REVISIT: should produce CQN as the ones above?
-      .to.eql({
+          SELECT: {
-        SELECT: {
+            one: true,
-          one: true,
+            from: { ref: ['Foo'] },
-          from: { ref: ['Foo'] },
+            where: [{ ref: ['ID'] }, '=', { val: 11 }],
-          columns: [{ ref: ['a'] }],
+          },
-          where: [{ ref: ['ID'] }, '=', { val: 11 }],
-        },
-      })
-
-    })
-
-    test('with nested expands', () => {
-      // SELECT from Foo { *, x, bar.*, car{*}, boo { *, moo.zoo } }
-      expect(cqn =
-        SELECT.from (Foo, foo => {
-          foo`*`, foo.x, foo.car`*`, foo.boo (b => {
-            b`*`, b.moo.zoo(
-              x => x.y.z
-            )
-          })
         })
-      ).to.eql(
+
-        SELECT.from (Foo, foo => {
+      expect(CQL`SELECT from Foo[11]{a}`).to.eql({
-          foo('*'), foo.x, foo.car('*'), foo.boo (b => {
+        SELECT: {
-            b('*'), b.moo.zoo(
+          // REVISIT: add one:true?
-              x => x.y.z
+          from: { ref: [{ id: 'Foo', where: [{ val: 11 }] }] },
-            )
+          columns: [{ ref: ['a'] }],
-          })
+        },
+      })
+
+      expect(SELECT.from(Foo, 11, ['a']))
+        .to.eql(SELECT.from(Foo, 11, (foo) => foo.a))
+        .to.eql({
+          // REVISIT: should produce CQN as the ones above?
+          SELECT: {
+            one: true,
+            from: { ref: ['Foo'] },
+            columns: [{ ref: ['a'] }],
+            where: [{ ref: ['ID'] }, '=', { val: 11 }],
+          },
+        })
+    })
+
+    test('from ( ..., => {...})', () => {
+      // single *, prefix and postfix, as array and function
+      let parsed, fluid
+      expect((parsed = CQL`SELECT * from Foo`)).to.eql(CQL`SELECT from Foo{*}`)
+      //> .to.eql... FIXME: see skipped 'should handle * correctly' below
+      expect((fluid = SELECT('*').from(Foo)))
+        .to.eql(SELECT.from(Foo, ['*']))
+        .to.eql(SELECT.from(Foo, (foo) => foo('*')))
+        .to.eql(SELECT.from(Foo).columns('*'))
+        .to.eql(SELECT.from(Foo).columns((foo) => foo('*')))
+        .to.eql({
+          SELECT: { from: { ref: ['Foo'] }, columns: [cdr ? '*' : { ref: ['*'] }] },
+        })
+
+      if (cdr) expect(parsed).to.eql(fluid)
+
+      // single column, prefix and postfix, as array and function
+      expect(CQL`SELECT a from Foo`)
+      expect(CQL`SELECT from Foo {a}`)
+        .to.eql(SELECT.from(Foo, ['a']))
+        .to.eql(SELECT.from(Foo, (foo) => foo.a))
+        .to.eql({
+          SELECT: { from: { ref: ['Foo'] }, columns: [{ ref: ['a'] }] },
+        })
+
+      // multiple columns, prefix and postfix, as array and function
+      expect(CQL`SELECT a,b as c from Foo`)
+
+      expect (CQL`SELECT from Foo {a,b as c}`).to.eql(cqn = {
+        SELECT: {
+          from: { ref: ['Foo'] },
+          columns: [{ ref: ['a'] }, { ref: ['b'], as: 'c' }],
+        },
+      })
+      expect(SELECT.from(Foo, ['a', { b: 'c' }])).to.eql(cqn)
+      expect(
+        SELECT.from(Foo, (foo) => {
+          foo.a, foo.b.as('c')
+        })
+      ).to.eql(cqn)
+      expect(SELECT.from(Foo).columns('a', { b: 'c' })).to.eql(cqn)
+      expect(SELECT.from(Foo).columns(['a', { b: 'c' }])).to.eql(cqn)
+      expect(
+        SELECT.from(Foo).columns((foo) => {
+          foo.a, foo.b.as('c')
+        })
+      ).to.eql(cqn)
+
+      // multiple columns and *, prefix and postfix, as array and function
+      expect(CQL`SELECT *,a,b from Foo`).to.eql(CQL`SELECT from Foo{*,a,b}`)
+      //> .to.eql... FIXME: see skipped 'should handle * correctly' below
+      expect(SELECT.from(Foo, ['a', 'b', '*']))
+      .to.eql(SELECT.from(Foo).columns('a', 'b', '*'))
+      .to.eql(SELECT.from(Foo).columns(['a', 'b', '*']))
+      .to.eql(
+        SELECT.from(Foo, (foo) => {
+          foo.a, foo.b, foo('*')
         })
       )
-
-      expect.plain(cqn)
       .to.eql({
+        SELECT: {
+          from: { ref: ['Foo'] },
+          columns: [{ ref: ['a'] }, { ref: ['b'] }, cdr ? '*' : { ref: ['*'] }],
+        },
+      })
+    })
+
+    test('from ( ..., => _.expand ( x=>{...}))', () => {
+      // SELECT from Foo { *, x, bar.*, car{*}, boo { *, moo.zoo } }
+      expect(
+        SELECT.from(Foo, (foo) => {
+          foo('*'),
+            foo.x,
+            foo.car('*'),
+            foo.boo((b) => {
+              b('*'), b.moo.zoo((x) => x.y.z)
+            })
+        })
+      ).to.eql({
         SELECT: {
           from: { ref: ['Foo'] },
           columns: [
-            STAR,
+            cdr ? '*' : { ref: ['*'] },
             { ref: ['x'] },
             { ref: ['car'], expand: ['*'] },
             {
               ref: ['boo'],
-              expand: [ '*', { ref: ['moo', 'zoo'], expand: [{ ref: ['y', 'z'] }] }],
+              expand: ['*', { ref: ['moo', 'zoo'], expand: [{ ref: ['y', 'z'] }] }],
             },
           ],
         },
       })
     })
 
-
+    test('from ( ..., => _.inline ( _=>{...}))', () => {
-    test('with nested inlines', () => {
       // SELECT from Foo { *, x, bar.*, car{*}, boo { *, moo.zoo } }
-      expect.plain(
+      expect(
-        SELECT.from (Foo, foo => {
+        SELECT.from(Foo, (foo) => {
-          foo.bar `*`,
+          foo.bar('*'),
-          foo.bar `.*`, //> leading dot indicates inline
+            foo.bar('.*'), //> leading dot indicates inline
-          foo.boo(_ => _.moo.zoo), //> underscore arg name indicates inline
+            foo.boo((x) => x.moo.zoo),
-          foo.boo(x => x.moo.zoo)
+            foo.boo((_) => _.moo.zoo) //> underscore arg name indicates inline
         })
       ).to.eql({
         SELECT: {
@@ -196,142 +209,62 @@ describe('cds.ql → cqn', () => {
           columns: [
             { ref: ['bar'], expand: ['*'] },
             { ref: ['bar'], inline: ['*'] },
-            { ref: ['boo'], inline: [{ ref: ['moo', 'zoo'] }] },
             { ref: ['boo'], expand: [{ ref: ['moo', 'zoo'] }] },
+            { ref: ['boo'], inline: [{ ref: ['moo', 'zoo'] }] },
           ],
         },
       })
     })
 
-  })}
+    test('one / distinct ...', () => {
+      expect(SELECT.distinct.from(Foo).SELECT)
+        // .to.eql(CQL(`SELECT distinct from Foo`).SELECT)
+        .to.eql(SELECT.distinct(Foo).SELECT)
+        .to.eql({ distinct: true, from: { ref: ['Foo'] } })
 
-  describe ('SELECT where...', ()=>{
+      expect(SELECT.one.from(Foo).SELECT)
+        // .to.eql(CQL(`SELECT one from Foo`).SELECT)
+        .to.eql(SELECT.one(Foo).SELECT)
+        .to.eql({ one: true, from: { ref: ['Foo'] } })
+
+      expect(SELECT.one('a').from(Foo).SELECT)
+        // .to.eql(CQL(`SELECT distinct a from Foo`).SELECT)
+        .to.eql(SELECT.one(['a']).from(Foo).SELECT)
+        .to.eql(SELECT.one(Foo, ['a']).SELECT)
+        .to.eql(SELECT.one(Foo, (foo) => foo.a).SELECT)
+        .to.eql(SELECT.one.from(Foo, (foo) => foo.a).SELECT)
+        .to.eql(SELECT.one.from(Foo, ['a']).SELECT)
+        .to.eql({
+          one: true,
+          from: { ref: ['Foo'] },
+          columns: [{ ref: ['a'] }],
+        })
+      // same for works distinct
+    })
 
     it('should correctly handle { ... and:{...} }', () => {
       expect(SELECT.from(Foo).where({ x: 1, and: { y: 2, or: { z: 3 } } })).to.eql({
         SELECT: {
           from: { ref: ['Foo'] },
-          where: cdr ? [
+          where: [
-            { ref: ['x'] },
-            '=',
-            { val: 1 },
-            'and',
-            // '(',
-            {xpr:[
-              { ref: ['y'] },
-              '=',
-              { val: 2 },
-              'or',
-              { ref: ['z'] },
-              '=',
-              { val: 3 },
-            ]},
-            // ')',
-          ] : [
             { ref: ['x'] },
             '=',
             { val: 1 },
             'and',
             '(',
-            // {xpr:[
+            { ref: ['y'] },
-              { ref: ['y'] },
+            '=',
-              '=',
+            { val: 2 },
-              { val: 2 },
+            'or',
-              'or',
+            { ref: ['z'] },
-              { ref: ['z'] },
+            '=',
-              '=',
+            { val: 3 },
-              { val: 3 },
-            // ]},
             ')',
           ],
         },
       })
     })
 
-    test ("where x='*'", ()=>{
-      if (cdr)
-      expect (SELECT.from(Foo).where({x:'*'}))
-      .to.eql(SELECT.from(Foo).where("x='*'"))
-      .to.eql(SELECT.from(Foo).where("x=",'*'))
-      .to.eql(SELECT.from(Foo).where`x=${'*'}`)
-      .to.eql(
-        CQL`SELECT from Foo where x='*'`
-      )
-      if (cdr)
-      expect (SELECT.from(Foo).where({x:['*',1]}))
-      .to.eql(SELECT.from(Foo).where("x in ('*',1)"))
-      .to.eql(SELECT.from(Foo).where("x in",['*',1]))
-      .to.eql(SELECT.from(Foo).where`x in ${['*',1]}`)
-      .to.eql(
-        CQL`SELECT from Foo where x in ('*',1)`
-      )
-    })
-
-    test ('where, and, or', ()=>{
-      expect (
-        SELECT.from(Foo).where({x:1,and:{y:2}})
-      ).to.eql (
-        CQL`SELECT from Foo where x=1 and y=2`
-      ) .to.eql ({ SELECT: {
-        from: {ref:['Foo']},
-        where: [
-          {ref:['x']}, '=', {val:1},
-          'and',
-          {ref:['y']}, '=', {val:2}
-        ]
-      }})
-
-      expect (
-        SELECT.from(Foo).where({x:1,or:{y:2}})
-      ).to.eql (
-        CQL`SELECT from Foo where x=1 or y=2`
-      ).to.eql ({ SELECT: {
-        from: {ref:['Foo']},
-        where: [
-          {ref:['x']}, '=', {val:1},
-          'or',
-          {ref:['y']}, '=', {val:2}
-        ]
-      }})
-
-      expect (
-        SELECT.from(Foo).where({x:1,and:{y:2}}).or({z:3})
-      ).to.eql (
-        CQL`SELECT from Foo where x=1 and y=2 or z=3`
-      )
-
-      if (cdr) expect (
-        SELECT.from(Foo).where({x:1}).and({y:2,or:{z:3}})
-      ).to.eql (
-        CQL`SELECT from Foo where x=1 and ( y=2 or z=3 )`
-      )
-
-      if (cdr) expect (
-        SELECT.from(Foo).where({1:1}).and({x:1,or:{x:2}}).and({y:2,or:{z:3}})
-      ).to.eql (
-        CQL`SELECT from Foo where 1=1 and ( x=1 or x=2 ) and ( y=2 or z=3 )`
-      )
-
-      if (cdr) expect (
-        SELECT.from(Foo).where({x:1,or:{x:2}}).and({y:2,or:{z:3}})
-      ).to.eql (
-        CQL`SELECT from Foo where ( x=1 or x=2 ) and ( y=2 or z=3 )`
-      )
-    })
-
-    test('where ({x:[undefined]})', () => {
-      if (cdr) expect (
-        SELECT.from(Foo).where({x:[undefined]})
-      ).to.eql ({ SELECT: {
-        from: {ref:['Foo']},
-        where: [
-          {ref:['x']},
-          'in',
-          { list: [ {val:undefined} ] }
-        ]
-      }})
-    })
-
     test('where ( ... cql  |  {x:y} )', () => {
       const args = [`foo`, "'bar'", 3]
       const ID = 11
@@ -347,17 +280,18 @@ describe('cds.ql → cqn', () => {
       ).to.eql({
         SELECT: {
           from: { ref: ['Foo'] },
-          where: cdr ? [
+          where: cds.version >= '5.3.0'
-            { ref: ['ID'] },
+            ? [
-            '=',
+                // '(', //> this one is not required
-            { val: ID },
+                { ref: ['ID'] },
-            'and',
+                '=',
-            { ref: ['args'] },
+                { val: ID },
-            'in',
+                'and',
-            { list: args.map(val => ({ val })) },
+                { ref: ['args'] },
-            'and',
+                'in',
-            {
+                { list: args.map(val => ({ val })) },
-              xpr: [
+                'and',
+                '(', //> this one is missing, and that's changing the logic -> that's a BUG
                 { ref: ['x'] },
                 'like',
                 { val: '%x%' },
@@ -365,28 +299,29 @@ describe('cds.ql → cqn', () => {
                 { ref: ['y'] },
                 '>=',
                 { val: 9 },
+                ')',
               ]
-            },
+            : [
-          ] : [
+                // '(', //> this one is not required
-            { ref: ['ID'] },
+                { ref: ['ID'] },
-            '=',
+                '=',
-            { val: ID },
+                { val: ID },
-            'and',
+                'and',
-            { ref: ['args'] },
+                { ref: ['args'] },
-            'in',
+                'in',
-            { list: args.map(val => ({ val })) },
+                { val: args },
-            'and',
+                'and',
-            '(',
+                '(',  //> this one is missing, and that's changing the logic -> that's a BUG
-            { ref: ['x'] },
+                { ref: ['x'] },
-            'like',
+                'like',
-            { val: '%x%' },
+                { val: '%x%' },
-            'or',
+                'or',
-            { ref: ['y'] },
+                { ref: ['y'] },
-            '>=',
+                '>=',
-            { val: 9 },
+                { val: 9 },
-            ')',
+                ')',
-          ],
+              ],
-        }
+        },
       })
 
       // using CQL fragments -> uses cds.parse.expr
@@ -471,32 +406,12 @@ describe('cds.ql → cqn', () => {
         ).to.eql(cqn)
     })
 
-    test('w/ plain SQL', () => {
+    it('w/ plain SQL', () => {
       expect(SELECT.from(Books) + 'WHERE ...').to.eql(
         'SELECT * FROM capire_bookshop_Books WHERE ...'
       )
     })
 
-    it('should consistently handle *', () => {
-      if (!cdr) return
-      expect({
-        SELECT: { from: { ref: ['Foo'] }, columns: ['*'] },
-      })
-      .to.eql(CQL`SELECT * from Foo`)
-      .to.eql(CQL`SELECT from Foo{*}`)
-      .to.eql(SELECT('*').from(Foo))
-      .to.eql(SELECT.from(Foo,['*']))
-    })
-
-    it('should consistently handle lists', () => {
-      if (!cdr) return
-      const ID = 11,  args = [{ref:['foo']}, "bar", 3]
-      const cqn = CQL`SELECT from Foo where ID=11 and x in (foo,'bar',3)`
-      expect(SELECT.from(Foo).where`ID=${ID} and x in ${args}`).to.eql(cqn)
-      expect(SELECT.from(Foo).where(`ID=`, ID, `and x in`, args)).to.eql(cqn)
-      expect(SELECT.from(Foo).where({ ID, x:args })).to.eql(cqn)
-    })
-
     //
   })
 

test/consuming-services.test.js

@@ -1,11 +1,11 @@
-const cds = require('@sap/cds/lib')
+const { expect } = require('../test') .run (
-const { expect } = cds.test (
   'serve', 'AdminService', '--from', '@capire/bookshop,@capire/common', '--in-memory'
 )
+const cds = require('@sap/cds/lib')
 
 describe('Consuming Services locally', () => {
   //
-  it('bootstrapped the database successfully', ()=>{
+  it('bootrapped the database successfully', ()=>{
     const { AdminService } = cds.services
     const { Authors } = AdminService.entities
     expect(AdminService).not.to.be.undefined
@@ -15,17 +15,17 @@ describe('Consuming Services locally', () => {
   it('supports targets as strings or reflected defs', async () => {
     const AdminService = await cds.connect.to('AdminService')
     const { Authors } = AdminService.entities
-    expect (await SELECT.from(Authors))
+    const _ = expect (await AdminService.read(Authors))
-    .to.eql(await SELECT.from('Authors'))
-    .to.eql(await AdminService.read(Authors))
     .to.eql(await AdminService.read('Authors'))
     .to.eql(await AdminService.run(SELECT.from(Authors)))
-    .to.eql(await AdminService.run(SELECT.from('Authors')))
+    // temporary workaround
+    if (cds.version >= '4.2.0')
+      _.to.eql(await AdminService.run(SELECT.from('Authors')))
   })
 
   it('allows reading from local services using cds.ql', async () => {
     const AdminService = await cds.connect.to('AdminService')
-    const authors = await AdminService.read (`Authors`, a => {
+    const query = SELECT.from('Authors', (a) => {
       a.name,
         a.books((b) => {
           b.title,
@@ -34,6 +34,10 @@ describe('Consuming Services locally', () => {
             })
         })
     }).where(`name like`, 'E%')
+    // temporary workaround
+    if (cds.version < '4.2.0')
+      query.SELECT.from.ref[0] = 'AdminService.Authors'
+    const authors = await AdminService.run(query)
     expect(authors).to.containSubset([
       {
         name: 'Emily Brontë',

test/custom-handlers.test.js

@@ -1,14 +1,14 @@
+const { GET, POST, expect } = require('../test') .run ('bookshop')
 const cds = require('@sap/cds/lib')
-const { GET, POST, expect } = cds.test(__dirname+'/../bookshop')
 if (cds.User.default) cds.User.default = cds.User.Privileged // hard core monkey patch
 else cds.User = cds.User.Privileged // hard core monkey patch for older cds releases
 
 describe('Custom Handlers', () => {
 
   it('should reject out-of-stock orders', async () => {
-    await POST `/browse/submitOrder ${{ book: 201, quantity: 5 }}`
+    await POST('/browse/submitOrder', { book: 201, amount: 5 })
-    await POST `/browse/submitOrder ${{ book: 201, quantity: 5 }}`
+    await POST('/browse/submitOrder', { book: 201, amount: 5 })
-    await expect(POST `/browse/submitOrder ${{ book: 201, quantity: 5 }}`).to.be.rejectedWith(/409 - 5 exceeds stock for book #201/)
+    await expect(POST('/browse/submitOrder', { book: 201, amount: 5 })).to.be.rejectedWith(/409 - 5 exceeds stock for book #201/)
     const { data } = await GET`/admin/Books/201/stock/$value`
     expect(data).to.equal(2)
   })

test/events.cds

@@ -0,0 +1,6 @@
+service Sue {
+  @cds.persistence.skip
+  entity Foo { key ID:Integer; title:String; status:String(1); }
+  entity Bar { key ID:Integer; foo: Association to Foo }
+  event Foo.changed : projection on Foo { ID, status }
+}

test/hello-world.test.js

@@ -1,5 +1,4 @@
-const cds = require('@sap/cds/lib')
+const { GET, expect } = require('../test') .run ('serve','hello/world.cds')
-const { GET, expect } = cds.test (__dirname+'/../hello')
 
 describe('Hello world!', () => {
 

test/hierarchical-data.test.js

@@ -1,5 +1,5 @@
+const {expect} = require('../test')
 const cds = require('@sap/cds/lib')
-const {expect} = cds.test
 
 const { parse:cdr } = cds.ql
 
@@ -76,9 +76,9 @@ describe('Hierarchical Data', ()=>{
 		const expected = [
       { ID:100, name:'Some Cats...' },
       { ID:101, name:'Cat' },
+        { ID:104, name:'Aristocat' },  // REVISIT: Should be deleted as well?
       { ID:108, name:'Catweazle' }
 		]
-    return 'skipped as this will be fixed in a newer cds version'
 		if (cdr) expect ( await SELECT.from(Cats) ).to.containSubset (expected)
 		else expect ( await SELECT.from(Cats) ).to.eql (expected)
 	})

test/index.js

@@ -0,0 +1,2 @@
+const cds = require('@sap/cds')
+module.exports = cds.test.in(__dirname,'..')

test/localized-data.test.js

@@ -1,5 +1,5 @@
+const { GET, expect } = require('../test') .run ('serve', 'test/localized-data.cds', '--in-memory')
 const cds = require('@sap/cds/lib')
-const { GET, expect } = cds.test.run ('serve', __dirname+'/localized-data.cds', '--in-memory')
 if (cds.User.default) cds.User.default = cds.User.Privileged // hard core monkey patch
 else cds.User = cds.User.Privileged // hard core monkey patch for older cds releases
 

test/messaging.test.js

@@ -1,5 +1,5 @@
+const { expect } = require('../test')
 const cds = require('@sap/cds/lib')
-const { expect } = cds.test
 const _model = '@capire/reviews'
 if (cds.User.default) cds.User.default = cds.User.Privileged // hard core monkey patch
 else cds.User = cds.User.Privileged // hard core monkey patch for older cds releases

test/odata.test.js

@@ -1,5 +1,5 @@
+const { GET, expect } = require('../test') .run ('bookshop')
 const cds = require('@sap/cds/lib')
-const { GET, expect } = cds.test ('@capire/bookshop')
 if (cds.User.default) cds.User.default = cds.User.Privileged // hard core monkey patch
 else cds.User = cds.User.Privileged // hard core monkey patch for older cds releases
 
@@ -18,9 +18,9 @@ describe('OData Protocol', () => {
   })
 
   it('supports $search in multiple fields', async () => {
-    const { data } = await GET `/browse/Books ${{
+    const { data } = await GET(`/browse/Books`, {
       params: { $search: 'Po', $select: `title,author` },
-    }}`
+    })
     expect(data.value).to.eql([
       { ID: 201, title: 'Wuthering Heights', author: 'Emily Brontë' },
       { ID: 207, title: 'Jane Eyre', author: 'Charlotte Brontë' },