add content for openSAP course week1 unit4

2020-01-30 17:30:03 +01:00
parent 21265e1138
commit d612b7bc0c
9 changed files with 1029 additions and 80 deletions
--- a/packages/bookshop/db/data/sap.capire.bookshop-Authors.csv
+++ b/packages/bookshop/db/data/sap.capire.bookshop-Authors.csv
@@ -1,5 +1,5 @@
-ID;name;dateOfBirth;placeOfBirth;dateOfDeath;placeOfDeath
-101;Emily Brontë;1818-07-30;Thornton, Yorkshire;1848-12-19;Haworth, Yorkshire
-107;Charlotte Brontë;1818-04-21;Thornton, Yorkshire;1855-03-31;Haworth, Yorkshire
-150;Edgar Allen Poe;1809-01-19;Boston, Massachusetts;1849-10-07;Baltimore, Maryland
-170;Richard Carpenter;1929-08-14;King’s Lynn, Norfolk;2012-02-26;Hertfordshire, England
+ID;name
+101;Emily Brontë
+107;Charlotte Brontë
+150;Edgar Allen Poe
+170;Richard Carpenter
--- a/packages/bookshop/db/data/sap.capire.bookshop-Books.csv
+++ b/packages/bookshop/db/data/sap.capire.bookshop-Books.csv
@@ -1,6 +1,6 @@
-ID;title;descr;author_ID;stock;price;currency_code
-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;"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;"""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;"""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;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
+ID;title;author_ID;stock
+201;Wuthering Heights;101;12
+207;Jane Eyre;107;11
+251;The Raven;150;333
+252;Eleonora;150;555
+271;Catweazle;170;22
--- a/packages/bookshop/db/schema.cds
+++ b/packages/bookshop/db/schema.cds
@@ -1,35 +1,30 @@
 namespace sap.capire.bookshop;
-using { Currency, managed, cuid } from '@sap/cds/common';
+using { Currency, managed } from '@sap/cds/common';

 entity Books : managed {
-  key ID : Integer;
-  title  : localized String(111);
-  descr  : localized String(1111);
-  author : Association to Authors;
-  stock  : Integer;
-  price  : Decimal(9,2);
+  key ID   : Integer;
+  title    : localized String(111);
+  descr    : localized String(1111);
+  author   : Association to Authors;
+  stock    : Integer;
+  price    : Decimal(9,2);
  currency : Currency;
 }

 entity Authors : managed {
-  key ID : Integer;
-  name   : String(111);
-  dateOfBirth  : Date;
-  dateOfDeath  : Date;
-  placeOfBirth : String;
-  placeOfDeath : String;
-  books  : Association to many Books on books.author = $self;
+  key ID   : Integer;
+  name     : String(111);
+  books    : Association to many Books on books.author = $self;
 }

-entity Orders : cuid, managed {
+entity Orders : managed {
+  key ID   : UUID;
  OrderNo  : String @title:'Order Number'; //> readable key
  Items    : Composition of many OrderItems on Items.parent = $self;
-  total    : Decimal(9,2) @readonly;
-  currency : Currency;
-}
-entity OrderItems : cuid {
-  parent    : Association to Orders;
-  book      : Association to Books;
-  amount    : Integer;
-  netAmount : Decimal(9,2);
 }
+entity OrderItems {
+  key ID   : UUID;
+  parent   : Association to Orders;
+  book     : Association to Books;
+  amount   : Integer;
+}
--- a/packages/bookshop/package-lock.json
+++ b/packages/bookshop/package-lock.json
@@ -0,0 +1,955 @@
+{
+  "name": "bookshop",
+  "version": "1.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
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+      "requires": {
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+        "@sap/cds-foss": "1.1.0",
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+        "@sap/cds-reflect": "2.9.2",
+        "@sap/cds-rest": "1.3.0",
+        "@sap/cds-services": "1.22.0",
+        "@sap/generator-cds": "2.11.1"
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+}
--- a/packages/bookshop/package.json
+++ b/packages/bookshop/package.json
@@ -1,14 +1,14 @@
 {
-  "name": "@sap/capire-bookshop",
+  "name": "bookshop",
  "version": "1.0.0",
-  "description": "A simple bookshop application, build in a self-contained all-in-one fashion, i.e. w/o reusing other packages.",
-  "license": "SAP SAMPLE CODE LICENSE",
+  "description": "A simple CAP project.",
+  "repository": "<Add your repository here>",
+  "license": "ISC",
  "dependencies": {
-    "@sap/cds": "latest",
-    "express": "*"
+    "@sap/cds": "^3",
+    "express": "^4"
  },
  "scripts": {
-    "start": "cds run --in-memory?",
-    "watch": "cds watch"
+    "start": "npx cds run"
  }
 }
--- a/packages/bookshop/sample
+++ b/packages/bookshop/sample
@@ -0,0 +1,10 @@
+### 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
--- a/packages/bookshop/srv/admin-service.cds
+++ b/packages/bookshop/srv/admin-service.cds
@@ -1,16 +1,6 @@
 using { sap.capire.bookshop as my } from '../db/schema';
-
-service AdminService @(_requires:'authenticated-user') {
+service AdminService @(_requires:'admin') {
  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;
-}
+}
--- a/packages/bookshop/srv/cat-service.cds
+++ b/packages/bookshop/srv/cat-service.cds
@@ -1,7 +1,5 @@
 using { sap.capire.bookshop as my } from '../db/schema';
-
-@path:'/browse'
-service CatalogService {
+service CatalogService @(path:'/browse') {

  @readonly entity Books as SELECT from my.Books {*,
    author.name as author
@@ -9,5 +7,4 @@ service CatalogService {

  @requires_: 'authenticated-user'
  @insertonly entity Orders as projection on my.Orders;
-
-}
+}
--- a/packages/bookshop/srv/cat-service.js
+++ b/packages/bookshop/srv/cat-service.js
@@ -1,26 +1,28 @@
-const cds = require('@sap/cds')
-const { Books } = cds.entities
+/**
+ * Implementation for CatalogService defined in ./cat-service.cds
+ */
+module.exports = (srv)=>{

-/** Service implementation for CatalogService */
-module.exports = cds.service.impl(function() {
-  this.after ('READ', 'Books', each => each.stock > 111 && _addDiscount2(each,11))
-  this.before ('CREATE', 'Orders', _reduceStock)
-})
+  // Use reflection to get the csn definition of Books
+  const {Books} = cds.entities

-/** Add some discount for overstocked books */
-function _addDiscount2 (each,discount) {
-  each.title += ` -- ${discount}% discount!`
-}
+  // Add some discount for overstocked books
+  srv.after ('READ','Books', (each)=>{
+    if (each.stock > 111) each.title += ' -- 11% discount!'
+  })
+
+  // Reduce stock of books upon incoming orders
+  srv.before ('CREATE','Orders', async (req)=>{
+    const tx = cds.transaction(req), order = req.data;
+    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}`
-    )
-  }))
 }