hibernate: added intermediary table

Author: MarioCodes

hibernate/app/src/main/java/es/msanchez/frameworks/java/spring/boot/entity/Hobby.java

@@ -17,7 +17,7 @@ public class Hobby {
 
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
-    private int id;
+    private Long id;
 
     private String name;
 

hibernate/app/src/main/java/es/msanchez/frameworks/java/spring/boot/entity/Person.java

@@ -3,11 +3,14 @@
 import lombok.Data;
 import lombok.NoArgsConstructor;
 
+import javax.persistence.CascadeType;
 import javax.persistence.Entity;
 import javax.persistence.GeneratedValue;
 import javax.persistence.GenerationType;
 import javax.persistence.Id;
+import javax.persistence.ManyToMany;
 import javax.persistence.Table;
+import java.util.List;
 
 @Table
 @Entity
@@ -17,10 +20,13 @@ public class Person {
 
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
-    private int id;
+    private Long id;
 
     private String name;
 
     private Integer age;
 
+    @ManyToMany(cascade = CascadeType.PERSIST)
+    private List<Hobby> hobbies;
+
 }

hibernate/app/src/test/java/es/msanchez/frameworks/java/spring/boot/hibernate/HibernateUtilTest.java

@@ -1,11 +1,15 @@
 package es.msanchez.frameworks.java.spring.boot.hibernate;
 
 import es.msanchez.frameworks.java.spring.boot.entity.Hobby;
+import es.msanchez.frameworks.java.spring.boot.entity.Person;
 import org.hibernate.Session;
 import org.testng.annotations.AfterMethod;
 import org.testng.annotations.BeforeMethod;
 import org.testng.annotations.Test;
 
+import java.util.ArrayList;
+import java.util.List;
+
 public class HibernateUtilTest {
 
     private Session session;
@@ -21,7 +25,7 @@ public void tearDown() {
     }
 
     @Test
-    public void testInsert() {
+    public void testInsertHobby() {
         // @GIVEN
         session.beginTransaction();
 
@@ -34,4 +38,27 @@ public void testInsert() {
 
         // @THEN
     }
+
+    @Test
+    public void testInsertPerson() {
+        // @GIVEN
+        session.beginTransaction();
+
+        final List<Hobby> hobbies = new ArrayList<>();
+        final Hobby hobby = new Hobby();
+        hobby.setName("Climbing");
+        hobbies.add(hobby);
+
+        final Person person = new Person();
+        person.setName("Mario");
+        person.setAge(1);
+        person.setHobbies(hobbies);
+
+        // @WHEN
+        session.save(hobby);
+        session.save(person);
+        session.getTransaction().commit();
+
+        // @THEN
+    }
 }