Refactor Publication class to use JOINED inheritance strategy and IDENTITY generation type

hibernate-project/pom.xml

@@ -57,16 +57,20 @@
             <groupId>jakarta.persistence</groupId>
             <artifactId>jakarta.persistence-api</artifactId>
         </dependency>
+        <dependency>
+            <groupId>jakarta.validation</groupId>
+            <artifactId>jakarta.validation-api</artifactId>
+            <version>3.1.0</version>
+        </dependency>
         <dependency>
             <groupId>com.mysql</groupId>
             <artifactId>mysql-connector-j</artifactId>
             <version>9.3.0</version>
         </dependency>
         <dependency>
-            <groupId>org.jetbrains</groupId>
+            <groupId>org.reflections</groupId>
-            <artifactId>annotations</artifactId>
+            <artifactId>reflections</artifactId>
-            <version>RELEASE</version>
+            <version>0.10.2</version>
-            <scope>compile</scope>
         </dependency>
 
     </dependencies>

hibernate-project/src/main/java/com/humanbooster/App.java

@@ -1,5 +1,6 @@
 package com.humanbooster;
 
+import com.humanbooster.config.HibernateConfig;
 import com.humanbooster.dao.AdDao;
 import com.humanbooster.dao.ArticleDao;
 import com.humanbooster.dao.UserDao;
@@ -15,6 +16,7 @@ import org.hibernate.boot.MetadataSources;
 import org.hibernate.boot.registry.StandardServiceRegistry;
 import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
 
+import java.math.BigDecimal;
 import java.time.Duration;
 import java.time.LocalDate;
 import java.time.temporal.ChronoUnit;
@@ -24,13 +26,18 @@ public class App {
     public static void main(String[] args) {
         System.out.println("Démarrage de l'application");
 
+        SessionFactory sessionFactory;
+
+        if (HibernateConfig.LOCAL) sessionFactory = HibernateConfig.getSessionFactory();
+
+        else {
             StandardServiceRegistry registry = new StandardServiceRegistryBuilder()
                     .configure()
                     .build();
 
             Metadata metadata = new MetadataSources(registry).buildMetadata();
-        SessionFactory sessionFactory = metadata.buildSessionFactory();
+            sessionFactory = metadata.buildSessionFactory();
-        System.out.println("Connexion réussie !");
+        }
 
         User user = new User("Bob", "bob@example.com", null);
 
@@ -39,7 +46,23 @@ public class App {
                 new Article("Article 2", "Contenu de l'article 2", LocalDate.now(), user, 0)
         ));
 
-        Ad ad = new Ad("Ad 1", "Contenu de l'annonce 1", LocalDate.now(), LocalDate.now().plusDays(7), "contact@example.com", 12);
+        List<Ad> ads = List.of(
+                (new Ad(
+                        "Ad 1",
+                        "Contenu de l'annonce 1",
+                        LocalDate.now(),
+                        LocalDate.now().plusDays(7),
+                        "contact@example.com",
+                        BigDecimal.valueOf(12))),
+                (new Ad(
+                        "Ad 2",
+                        "Contenu de l'annonce 2",
+                        LocalDate.now(),
+                        LocalDate.now().plusDays(10),
+                        "contact@example.com",
+                        BigDecimal.valueOf(6.7)))
+
+        );
 
         UserService userService = new UserService(new UserDao(sessionFactory));
         ArticleService articleService = new ArticleService(new ArticleDao(sessionFactory));
@@ -54,7 +77,7 @@ public class App {
                 }
         );
 
-        adService.createAd(ad);
+        ads.forEach(adService::createAd);
 
         sessionFactory.close();
         System.out.print("Fin du programme");

hibernate-project/src/main/java/com/humanbooster/annotation/Pair.java

@@ -0,0 +1,6 @@
+package com.humanbooster.annotation;
+
+public @interface Pair {
+
+    String message() default "Le nombre doit être pair";
+}

hibernate-project/src/main/java/com/humanbooster/annotation/PairValidator.java

@@ -0,0 +1,12 @@
+package com.humanbooster.annotation;
+
+import jakarta.validation.ConstraintValidator;
+import jakarta.validation.ConstraintValidatorContext;
+
+public class PairValidator implements ConstraintValidator<Pair, Integer> {
+
+    @Override
+    public boolean isValid(Integer integer, ConstraintValidatorContext constraintValidatorContext) {
+        return (integer != null) && (integer % 2 == 0);
+    }
+}

hibernate-project/src/main/java/com/humanbooster/config/HibernateConfig.java

@@ -0,0 +1,50 @@
+package com.humanbooster.config;
+
+import org.hibernate.SessionFactory;
+import org.hibernate.cfg.Configuration;
+import org.reflections.Reflections;
+
+import jakarta.persistence.Entity;
+
+public class HibernateConfig {
+    private static final SessionFactory sessionFactory;
+    public static final boolean LOCAL = true;
+    private static String url;
+    private static String username;
+    private static String password;
+
+
+    static {
+
+        if (LOCAL) {
+            url = "jdbc:mysql://127.0.0.1:3306/testdb";
+            username = "admin";
+            password = "admin";
+        } else {
+            url = "jdbc:mysql://mysql:3306/testdb?useSSL=false&allowPublicKeyRetrieval=true";
+            username = "root";
+            password = "root";
+        }
+
+        Configuration config = new Configuration()
+                .setProperty("hibernate.connection.url", url)
+                .setProperty("hibernate.connection.username", username)
+                .setProperty("hibernate.connection.password", password)
+                .setProperty("hibernate.connection.driver_class", "com.mysql.cj.jdbc.Driver")
+                .setProperty("hibernate.hbm2ddl.auto", "update")
+                .setProperty("hibernate.show_sql", "false")
+                .setProperty("hibernate.format_sql", "true");
+
+        Reflections reflections = new Reflections("com.humanbooster.model");
+        for (Class<?> clazz : reflections.getTypesAnnotatedWith(Entity.class)) {
+            config.addAnnotatedClass(clazz);
+        }
+
+        sessionFactory = config.buildSessionFactory();
+    }
+
+    public static SessionFactory getSessionFactory() {
+        return sessionFactory;
+    }
+}
+

hibernate-project/src/main/java/com/humanbooster/model/Ad.java

@@ -2,7 +2,9 @@ package com.humanbooster.model;
 
 import jakarta.persistence.Column;
 import jakarta.persistence.Entity;
+import jakarta.validation.constraints.Email;
 
+import java.math.BigDecimal;
 import java.time.LocalDate;
 
 @Entity
@@ -12,14 +14,15 @@ public class Ad extends Publication {
     private LocalDate expirationDate;
 
     @Column(nullable = false)
+    @Email
     private String contactEmail;
 
-    private int price;
+    private BigDecimal price;
 
     public Ad() {
     }
 
-    public Ad(String title, String content, LocalDate publishDate, LocalDate expirationDate, String contactEmail, int price) {
+    public Ad(String title, String content, LocalDate publishDate, LocalDate expirationDate, String contactEmail, BigDecimal price) {
         super(title, content, publishDate);
         this.expirationDate = expirationDate;
         this.contactEmail = contactEmail;
@@ -42,11 +45,11 @@ public class Ad extends Publication {
         this.contactEmail = contactEmail;
     }
 
-    public int getPrice() {
+    public BigDecimal getPrice() {
         return price;
     }
 
-    public void setPrice(int price) {
+    public void setPrice(BigDecimal price) {
         this.price = price;
     }
 }

hibernate-project/src/main/java/com/humanbooster/model/Publication.java

@@ -5,12 +5,12 @@ import jakarta.persistence.*;
 import java.time.LocalDate;
 
 @Entity
-@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
+@Inheritance(strategy = InheritanceType.JOINED)
 @DiscriminatorColumn
 public abstract class Publication {
 
     @Id
-    @GeneratedValue(strategy = GenerationType.AUTO)
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;
 
     @Column(nullable = false, length = 200)

hibernate-project/src/main/resources/hibernate.cfg.xml

@@ -12,9 +12,9 @@
 
         <property name="hibernate.hbm2ddl.auto">update</property>
 
-
         <property name="hibernate.show_sql">false</property>
         <property name="hibernate.format_sql">true</property>
+
         <mapping class="com.humanbooster.model.User"/>
         <mapping class="com.humanbooster.model.Article"/>
         <mapping class="com.humanbooster.model.Ad"/>

hibernate-project/target/classes/hibernate.cfg.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE hibernate-configuration PUBLIC 
+"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
+"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
+
+<hibernate-configuration>
+    <session-factory>
+        <property name="jakarta.persistence.jdbc.driver">com.mysql.cj.jdbc.Driver</property>
+        <property name="jakarta.persistence.jdbc.url">jdbc:mysql://mysql:3306/testdb?useSSL=false&amp;allowPublicKeyRetrieval=true</property>
+        <property name="jakarta.persistence.jdbc.user">root</property>
+        <property name="jakarta.persistence.jdbc.password">root</property>
+
+        <property name="hibernate.hbm2ddl.auto">update</property>
+
+
+        <property name="hibernate.show_sql">false</property>
+        <property name="hibernate.format_sql">true</property>
+        <mapping class="com.humanbooster.model.User"/>
+        <mapping class="com.humanbooster.model.Article"/>
+        <mapping class="com.humanbooster.model.Ad"/>
+    </session-factory>
+</hibernate-configuration>