restore CodeList aspect

Author: etimr

db/books.cds

@@ -2,6 +2,7 @@ namespace my.bookshop;
 
 using {
     Currency,
+    sap,
     managed,
     cuid
 } from '@sap/cds/common';
@@ -47,10 +48,8 @@ annotate Authors with
 /**
  * Hierarchically organized Code List for Genres
  */
-entity Genres {
+entity Genres : sap.common.CodeList {
     key ID       : Integer;
-        name     : localized String(255);
-        descr    : localized String(1000);
         parent   : Association to Genres;
         children : Composition of many Genres
                        on children.parent = $self;

srv/admin-service.cds

@@ -21,6 +21,7 @@ service AdminService @(requires: 'admin') {
   entity Authors        as projection on my.Authors;
   entity Orders         as select from my.Orders;
   extend my.Genres with Hierarchy;
+  @cds.odata.valuelist: false
   entity GenreHierarchy as projection on my.Genres;
 
   @cds.persistence.skip

srv/cat-service.cds

@@ -13,9 +13,6 @@ service CatalogService @(requires: 'any') {
     @readonly
     entity Authors     as projection on my.Authors;
 
-    @readonly
-    entity Genres     as projection on my.Genres;
-
     @readonly
     entity Reviews     as projection on my.Reviews;
 

srv/review-service.cds

@@ -15,9 +15,6 @@ service ReviewService {
     @readonly
     entity Authors as projection on my.Authors;
 
-    @readonly
-    entity Genres  as projection on my.Genres;
-
     // access control restrictions
     annotate Reviews with @restrict: [
         {