add possession relationship

spring-jpa/src/main/java/org/baeldung/persistence/multiple/dao/user/PossessionRepository.java

@@ -0,0 +1,8 @@
+package org.baeldung.persistence.multiple.dao.user;
+
+import org.baeldung.persistence.multiple.model.user.Possession;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface PossessionRepository extends JpaRepository<Possession, Long> {
+
+}

spring-jpa/src/main/java/org/baeldung/persistence/multiple/model/user/Possession.java

@@ -0,0 +1,86 @@
+package org.baeldung.persistence.multiple.model.user;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+@Entity
+@Table(schema = "spring_jpa_user")
+public class Possession {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private long id;
+
+    private String name;
+
+    public Possession() {
+        super();
+    }
+
+    public Possession(final String name) {
+        super();
+
+        this.name = name;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(final int id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(final String name) {
+        this.name = name;
+    }
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = (prime * result) + (int) (id ^ (id >>> 32));
+        result = (prime * result) + ((name == null) ? 0 : name.hashCode());
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        final Possession other = (Possession) obj;
+        if (id != other.id) {
+            return false;
+        }
+        if (name == null) {
+            if (other.name != null) {
+                return false;
+            }
+        } else if (!name.equals(other.name)) {
+            return false;
+        }
+        return true;
+    }
+
+    @Override
+    public String toString() {
+        final StringBuilder builder = new StringBuilder();
+        builder.append("Possesion [id=").append(id).append(", name=").append(name).append("]");
+        return builder.toString();
+    }
+
+}

spring-jpa/src/main/java/org/baeldung/persistence/multiple/model/user/User.java

@@ -1,10 +1,13 @@
 package org.baeldung.persistence.multiple.model.user;
 
+import java.util.List;
+
 import javax.persistence.Column;
 import javax.persistence.Entity;
 import javax.persistence.GeneratedValue;
 import javax.persistence.GenerationType;
 import javax.persistence.Id;
+import javax.persistence.OneToMany;
 import javax.persistence.Table;
 
 @Entity
@@ -22,6 +25,9 @@ public class User {
 
     private int age;
 
+    @OneToMany
+    List<Possession> possessionList;
+
     public User() {
         super();
     }
@@ -58,6 +64,14 @@ public class User {
         this.age = age;
     }
 
+    public List<Possession> getPossessionList() {
+        return possessionList;
+    }
+
+    public void setPossessionList(List<Possession> possessionList) {
+        this.possessionList = possessionList;
+    }
+
     @Override
     public String toString() {
         final StringBuilder builder = new StringBuilder();

spring-jpa/src/test/java/org/baeldung/persistence/service/JpaMultipleDBIntegrationTest.java

@@ -1,14 +1,18 @@
 package org.baeldung.persistence.service;
 
 import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
+import java.util.Arrays;
+
 import org.baeldung.config.ProductConfig;
 import org.baeldung.config.UserConfig;
 import org.baeldung.persistence.multiple.dao.product.ProductRepository;
+import org.baeldung.persistence.multiple.dao.user.PossessionRepository;
 import org.baeldung.persistence.multiple.dao.user.UserRepository;
 import org.baeldung.persistence.multiple.model.product.Product;
+import org.baeldung.persistence.multiple.model.user.Possession;
 import org.baeldung.persistence.multiple.model.user.User;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -16,15 +20,20 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.dao.DataIntegrityViolationException;
 import org.springframework.test.context.ContextConfiguration;
 import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.transaction.annotation.EnableTransactionManagement;
 import org.springframework.transaction.annotation.Transactional;
 
 @RunWith(SpringJUnit4ClassRunner.class)
 @ContextConfiguration(classes = { UserConfig.class, ProductConfig.class })
+@EnableTransactionManagement
 public class JpaMultipleDBIntegrationTest {
 
     @Autowired
     private UserRepository userRepository;
 
+    @Autowired
+    private PossessionRepository possessionRepository;
+
     @Autowired
     private ProductRepository productRepository;
 
@@ -37,9 +46,14 @@ public class JpaMultipleDBIntegrationTest {
         user.setName("John");
         user.setEmail("john@test.com");
         user.setAge(20);
+        Possession p = new Possession("sample");
+        p = possessionRepository.save(p);
+        user.setPossessionList(Arrays.asList(p));
         user = userRepository.save(user);
-
-        assertNotNull(userRepository.findOne(user.getId()));
+        final User result = userRepository.findOne(user.getId());
+        assertNotNull(result);
+        System.out.println(result.getPossessionList());
+        assertTrue(result.getPossessionList().size() == 1);
     }
 
     @Test