added example code for BAEL-2083 (#6486)

* added example code for BAEL-2083

* updated example code for BAEL-2083

persistence-modules/hibernate5/pom.xml

@@ -83,13 +83,18 @@
             <artifactId>jmh-generator-annprocess</artifactId>
             <version>${openjdk-jmh.version}</version>
         </dependency>
+        <dependency>
+            <groupId>javax.xml.bind</groupId>
+            <artifactId>jaxb-api</artifactId>
+            <version>2.3.0</version>
+        </dependency>
     </dependencies>
 
     <build>
         <finalName>hibernate5</finalName>
         <resources>
             <resource>
-                <directory>src/main/resources</directory>
+                <directory>src/test/resources</directory>
                 <filtering>true</filtering>
             </resource>
         </resources>

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/HibernateUtil.java

@@ -113,6 +113,7 @@ public class HibernateUtil {
         metadataSources.addAnnotatedClass(OptimisticLockingCourse.class);
         metadataSources.addAnnotatedClass(OptimisticLockingStudent.class);
         metadataSources.addAnnotatedClass(OfficeEmployee.class);
+        metadataSources.addAnnotatedClass(Post.class);
 
         Metadata metadata = metadataSources.getMetadataBuilder()
                 .applyBasicType(LocalDateStringType.INSTANCE)

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/Post.java

@@ -0,0 +1,59 @@
+package com.baeldung.hibernate.pojo;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "posts")
+public class Post {
+
+    @Id
+    @GeneratedValue
+    private int id;
+
+    private String title;
+
+    private String body;
+
+    public Post() { }
+
+    public Post(String title, String body) {
+        this.title = title;
+        this.body = body;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getBody() {
+        return body;
+    }
+
+    public void setBody(String body) {
+        this.body = body;
+    }
+
+    @Override
+    public String toString() {
+        return "Post{" +
+                "id=" + id +
+                ", title='" + title + '\'' +
+                ", body='" + body + '\'' +
+                '}';
+    }
+}

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/transaction/PostService.java

@@ -0,0 +1,29 @@
+package com.baeldung.hibernate.transaction;
+
+import org.hibernate.Session;
+import org.hibernate.Transaction;
+import org.hibernate.query.Query;
+
+public class PostService {
+
+
+    private Session session;
+
+    public PostService(Session session) {
+        this.session = session;
+    }
+
+
+    public void updatePost(String title, String body, int id) {
+        Transaction txn = session.beginTransaction();
+        Query updateQuery = session.createQuery("UPDATE Post p SET p.title = ?1, p.body = ?2 WHERE p.id = ?3");
+        updateQuery.setParameter(1, title);
+        updateQuery.setParameter(2, body);
+        updateQuery.setParameter(3, id);
+        updateQuery.executeUpdate();
+        txn.commit();
+    }
+
+
+
+}

persistence-modules/hibernate5/src/test/java/com/baeldung/hibernate/CustomClassIntegrationTest.java

@@ -74,4 +74,6 @@ public class CustomClassIntegrationTest {
         assertEquals("John Smith", result.getEmployeeName());
         assertEquals("Sales", result.getDepartmentName());   
     }
+
+
 }

persistence-modules/hibernate5/src/test/java/com/baeldung/hibernate/transaction/TransactionIntegrationTest.java

@@ -0,0 +1,57 @@
+package com.baeldung.hibernate.transaction;
+
+import com.baeldung.hibernate.HibernateUtil;
+import com.baeldung.hibernate.pojo.Post;
+import com.baeldung.hibernate.transaction.PostService;
+import org.hibernate.Session;
+import org.hibernate.SessionFactory;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.util.Properties;
+
+import static org.junit.Assert.assertEquals;
+
+public class TransactionIntegrationTest {
+
+    private static PostService postService;
+    private static Session session;
+    private static Logger logger = LoggerFactory.getLogger(TransactionIntegrationTest.class);
+
+    @BeforeClass
+    public static void init() throws IOException {
+        Properties properties = new Properties();
+        properties.setProperty("hibernate.connection.driver_class", "org.h2.Driver");
+        properties.setProperty("hibernate.connection.url", "jdbc:h2:mem:mydb1;DB_CLOSE_DELAY=-1");
+        properties.setProperty("hibernate.connection.username", "sa");
+        properties.setProperty("hibernate.show_sql", "true");
+        properties.setProperty("jdbc.password", "");
+        properties.setProperty("hibernate.dialect", "org.hibernate.dialect.H2Dialect");
+        properties.setProperty("hibernate.hbm2ddl.auto", "create-drop");
+        SessionFactory sessionFactory = HibernateUtil.getSessionFactoryByProperties(properties);
+        session = sessionFactory.openSession();
+        postService = new PostService(session);
+    }
+
+    @Test
+    public void givenTitleAndBody_whenRepositoryUpdatePost_thenUpdatePost() {
+
+        Post post = new Post("This is a title", "This is a sample post");
+        session.persist(post);
+
+        String title = "[UPDATE] Java HowTos";
+        String body = "This is an updated posts on Java how-tos";
+        postService.updatePost(title, body, post.getId());
+
+        session.refresh(post);
+
+        assertEquals(post.getTitle(), title);
+        assertEquals(post.getBody(), body);
+    }
+
+
+}