@Capabilities.ExpandRestrictions.MaxLevels

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

@@ -4,3 +4,18 @@ ID,title,descr,author_ID,stock,price,currency_code,genre_ID
 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,16aaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
 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,15aaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
 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.",170,22,150,JPY,13aaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
+301,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,11aaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
+307,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,11aaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
+351,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,16aaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
+352,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,15aaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
+371,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.",170,22,150,JPY,13aaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
+401,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,11aaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
+407,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,11aaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
+451,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,16aaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
+452,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,15aaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
+471,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.",170,22,150,JPY,13aaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
+501,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,11aaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
+507,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,11aaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
+551,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,16aaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
+552,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,15aaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
+571,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.",170,22,150,JPY,13aaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa

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

@@ -0,0 +1,25 @@
+parent_ID,number,content
+201,1,Hello World
+201,2,Lorem ipsum dolor sit amet
+201,3,Consectetur adipiscing elit
+201,4,Sed do eiusmod tempor incididunt
+201,5,Ut labore et dolore magna aliqua
+201,6,Ut enim ad minim veniam
+201,7,Quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
+201,8,Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore
+201,9,Excepteur sint occaecat cupidatat non proident
+201,10,Sunt in culpa qui officia deserunt mollit anim id est laborum
+207,1,Hello World
+251,1,Hello World
+252,1,Hello World
+271,1,Hello World
+301,1,Hello World
+301,2,Lorem ipsum dolor sit amet
+301,3,Consectetur adipiscing elit
+301,4,Sed do eiusmod tempor incididunt
+301,5,Ut labore et dolore magna aliqua
+301,6,Ut enim ad minim veniam
+301,7,Quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
+301,8,Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore
+301,9,Excepteur sint occaecat cupidatat non proident
+301,10,Sunt in culpa qui officia deserunt mollit anim id est laborum

bookshop/db/schema.cds

@@ -1,36 +1,53 @@
-using { Currency, managed, sap } from '@sap/cds/common';
+using {
+  Currency,
+  managed,
+  sap
+} from '@sap/cds/common';
+
 namespace sap.capire.bookshop;
 
+@Capabilities.ExpandRestrictions.MaxLevels: 1
 entity Books : managed {
-  key ID   : Integer;
-  title    : localized String(111)  @mandatory;
-  descr    : localized String(1111);
-  author   : Association to Authors @mandatory;
-  genre    : Association to Genres;
-  stock    : Integer;
-  price    : Price;
-  currency : Currency;
-  image    : LargeBinary @Core.MediaType: 'image/png';
+  key ID       : Integer;
+      title    : localized String(111)  @mandatory;
+      descr    : localized String(1111);
+      author   : Association to Authors @mandatory;
+      genre    : Association to Genres;
+      stock    : Integer;
+      price    : Price;
+      currency : Currency;
+      image    : LargeBinary            @Core.MediaType: 'image/png';
+      pages    : Composition of many Pages
+                   on pages.parent = $self;
+}
+
+@Capabilities.ExpandRestrictions.MaxLevels: 1
+entity Pages {
+  key parent  : Association to Books;
+  key number  : Integer;
+      content : String(1111);
 }
 
 entity Authors : managed {
-  key ID       : Integer;
-  name         : String(111) @mandatory;
-  dateOfBirth  : Date;
-  dateOfDeath  : Date;
-  placeOfBirth : String;
-  placeOfDeath : String;
-  books        : Association to many Books on books.author = $self;
+  key ID           : Integer;
+      name         : String(111) @mandatory;
+      dateOfBirth  : Date;
+      dateOfDeath  : Date;
+      placeOfBirth : String;
+      placeOfDeath : String;
+      books        : Association to many Books
+                       on books.author = $self;
 }
 
 /** Hierarchically organized Code List for Genres */
 entity Genres : sap.common.CodeList {
-  key ID   : UUID;
-  parent   : Association to Genres;
-  children : Composition of many Genres on children.parent = $self;
+  key ID       : UUID;
+      parent   : Association to Genres;
+      children : Composition of many Genres
+                   on children.parent = $self;
 }
 
-type Price : Decimal(9,2);
+type Price : Decimal(9, 2);
 
 
 // ------------------------------------------------------------------

bookshop/srv/cat-service.cds

@@ -1,16 +1,35 @@
-using { sap.capire.bookshop as my } from '../db/schema';
-service CatalogService @(path:'/browse') {
+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
-  excluding { descr };
+  @readonly
+  entity ListOfBooks as
+    projection on Books
+    excluding {
+      descr
+    };
 
   /** For display in details pages */
-  @readonly entity Books as projection on my.Books { *,
-    author.name as author
-  } excluding { createdBy, modifiedBy };
+  @readonly
+  entity Books       as
+    projection on my.Books {
+      *,
+      author.name as author
+    }
+    excluding {
+      createdBy,
+      modifiedBy
+    };
 
   @requires: 'authenticated-user'
-  action submitOrder ( book: Books:ID, quantity: Integer ) returns { stock: Integer };
-  event OrderedBook : { book: Books:ID; quantity: Integer; buyer: String };
+  action submitOrder(book : Books:ID, quantity : Integer) returns {
+    stock : Integer
+  };
+
+  event OrderedBook : {
+    book     : Books:ID;
+    quantity : Integer;
+    buyer    : String
+  };
 }

bookshop/srv/cat-service.js

@@ -1,38 +1,39 @@
-const cds = require('@sap/cds')
-
-class CatalogService extends cds.ApplicationService { init() {
-
-  const { Books } = cds.entities('sap.capire.bookshop')
-  const { ListOfBooks } = this.entities
-
-  // Add some discount for overstocked books
-  this.after('each', ListOfBooks, book => {
-    if (book.stock > 111) book.title += ` -- 11% discount!`
-  })
-
-  // Reduce stock of ordered books if available stock suffices
-  this.on('submitOrder', async req => {
-    let { book:id, quantity } = req.data
-    let book = await SELECT.from (Books, id, b => b.stock)
-
-    // Validate input data
-    if (!book) return req.error (404, `Book #${id} doesn't exist`)
-    if (quantity < 1) return req.error (400, `quantity has to be 1 or more`)
-    if (quantity > book.stock) return req.error (409, `${quantity} exceeds stock for book #${id}`)
-
-    // Reduce stock in database and return updated stock value
-    await UPDATE (Books, id) .with ({ stock: book.stock -= quantity })
-    return book
-  })
-
-  // Emit event when an order has been submitted
-  this.after('submitOrder', async (_,req) => {
-    let { book, quantity } = req.data
-    await this.emit('OrderedBook', { book, quantity, buyer: req.user.id })
-  })
-
-  // Delegate requests to the underlying generic service
-  return super.init()
-}}
-
-module.exports = CatalogService
+const cds = require("@sap/cds");
+
+class CatalogService extends cds.ApplicationService {
+  init() {
+    const { Books } = cds.entities("sap.capire.bookshop");
+    const { ListOfBooks } = this.entities;
+
+    // Add some discount for overstocked books
+    this.after("each", ListOfBooks, (book) => {
+      if (book.stock > 111) book.title += ` -- 11% discount!`;
+    });
+
+    // Reduce stock of ordered books if available stock suffices
+    this.on("submitOrder", async (req) => {
+      let { book: id, quantity } = req.data;
+      let book = await SELECT.from(Books, id, (b) => b.stock);
+
+      // Validate input data
+      if (!book) return req.error(404, `Book #${id} doesn't exist`);
+      if (quantity < 1) return req.error(400, `quantity has to be 1 or more`);
+      if (quantity > book.stock) return req.error(409, `${quantity} exceeds stock for book #${id}`);
+
+      // Reduce stock in database and return updated stock value
+      await UPDATE(Books, id).with({ stock: (book.stock -= quantity) });
+      return book;
+    });
+
+    // Emit event when an order has been submitted
+    this.after("submitOrder", async (_, req) => {
+      let { book, quantity } = req.data;
+      await this.emit("OrderedBook", { book, quantity, buyer: req.user.id });
+    });
+
+    // Delegate requests to the underlying generic service
+    return super.init();
+  }
+}
+
+module.exports = CatalogService;