First push

bookshop/handlers/AdminService.Authors.CREATE.js

@@ -1,13 +1,13 @@
 async function run() {
-  debugger
-  while (true) {}
-  process.exit()
+  //debugger
+  //while (true) {}
+  //process.exit()
   //1.substring()
   let res = await cds.read(SELECT.one`title`.from(`Books`).where(`ID=201`))
   let { title } = res
   const data = req.data
-  data.modifiedBy = "Custom Event handler read changed this!";
-  data.placeOfDeath = ' --- Somewhere over ' + title + ' --- create in Sandbox'
+  data.modifiedBy = "Custom Event handler read changed this!"
+  data.placeOfDeath = " --- Somewhere over " + title + " --- create in Sandbox"
   return data
 }
 output = run()

bookshop/handlers/AdminService.Authors.READ.js

@@ -0,0 +1,5 @@
+const result_ = Array.isArray(result) ? result : [result]
+for (const row of result_) {
+  row.modifiedBy += " --- read in sandbox"
+  row.age = 27
+}

bookshop/handlers/AdminService.Books.CREATE.js

@@ -0,0 +1,9 @@
+
+async function run() {
+  const {stock, price, author_ID} = req.data
+  if (stock<0) return req.reject('409', 'Stock must not be negative')
+  if (price<0) return req.reject('409', 'Price must not be negative')
+  let {name} = await SELECT.one`name`.from(`Authors`).where({ID: author_ID})
+  req.data.authorName=name
+}
+output = run()

bookshop/handlers/AdminService.Books.READ.js

@@ -0,0 +1,6 @@
+const result_ = Array.isArray(result) ? result : [result];
+for (const row of result_) {
+  if (row.stock > 50) {
+    row.title += " ---Order now for a 10% discount!";
+  }
+}