Find users by name

Author: mickablondo

src/main/java/dev/mikablondo/hibernate_reactive_test/controller/UserController.java

@@ -24,7 +24,10 @@ public class UserController {
     private final UserService userService;
 
     @GetMapping
-    public Multi<User> getAllUsers() {
+    public Multi<User> getUsersByNom(@RequestParam(required = false) String nom) {
+        if (nom != null) {
+            return userService.getUsersByNom(nom);
+        }
         return userService.getAllUsers();
     }
 

src/main/java/dev/mikablondo/hibernate_reactive_test/repository/UserRepository.java

@@ -32,6 +32,20 @@ public Multi<UserEntity> findAll() {
         ).onItem().transformToMulti(users -> Multi.createFrom().iterable(users));
     }
 
+    /**
+     * This method retrieves all users with a specific name from the database.
+     *
+     * @param nom the name of the users to be retrieved
+     * @return a Multi stream of UserEntity objects
+     */
+    public Multi<UserEntity> findAll(String nom) {
+        return sessionFactory.withSession(session ->
+                session.createQuery("from UserEntity where lower(nom) = :nom", UserEntity.class)
+                        .setParameter("nom", nom.toLowerCase())
+                        .getResultList()
+        ).onItem().transformToMulti(users -> Multi.createFrom().iterable(users));
+    }
+
     /**
      * This method creates a new user in the database.
      *

src/main/java/dev/mikablondo/hibernate_reactive_test/services/UserService.java

@@ -85,4 +85,21 @@ public Uni<User> getUserById(UUID uuid) {
                     }
                 });
     }
+
+    /**
+     * This method retrieves users by their name from the database.
+     *
+     * @param nom the name of the users to be retrieved
+     * @return a Multi stream of User DTO objects
+     */
+    public Multi<User> getUsersByNom(String nom) {
+        return userRepository.findAll(nom)
+                .onItem().transform(userEntity -> User.builder()
+                        .id(userEntity.getId())
+                        .nom(userEntity.getNom())
+                        .prenom(userEntity.getPrenom())
+                        .age(userEntity.getAge())
+                        .metier(userEntity.getMetier())
+                        .build());
+    }
 }