Add code for article "Mapping LOB Data in Hibernate" (#3778)

* Add lob example

* Migrate the XML Based Configuration to Java Based Configuration

hibernate5/src/main/java/com/baeldung/hibernate/lob/HibernateSessionUtil.java

@@ -0,0 +1,61 @@
+package com.baeldung.hibernate.lob;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.net.URL;
+import java.util.Properties;
+
+import org.apache.commons.lang3.StringUtils;
+import org.hibernate.SessionFactory;
+import org.hibernate.boot.Metadata;
+import org.hibernate.boot.MetadataSources;
+import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
+import org.hibernate.service.ServiceRegistry;
+
+import com.baeldung.hibernate.lob.model.User;
+
+public class HibernateSessionUtil {
+
+	private static SessionFactory sessionFactory;
+    private static String PROPERTY_FILE_NAME;
+
+    public static SessionFactory getSessionFactory() throws IOException {
+        return getSessionFactory(null);
+    }
+
+    public static SessionFactory getSessionFactory(String propertyFileName) throws IOException {
+        PROPERTY_FILE_NAME = propertyFileName;
+        if (sessionFactory == null) {
+            ServiceRegistry serviceRegistry = configureServiceRegistry();
+            sessionFactory = makeSessionFactory(serviceRegistry);
+        }
+        return sessionFactory;
+    }
+
+    private static SessionFactory makeSessionFactory(ServiceRegistry serviceRegistry) {
+        MetadataSources metadataSources = new MetadataSources(serviceRegistry);
+        metadataSources.addAnnotatedClass(User.class);
+
+        Metadata metadata = metadataSources.buildMetadata();
+        return metadata.getSessionFactoryBuilder()
+                .build();
+
+    }
+
+    private static ServiceRegistry configureServiceRegistry() throws IOException {
+        Properties properties = getProperties();
+        return new StandardServiceRegistryBuilder().applySettings(properties)
+                .build();
+    }
+
+    private static Properties getProperties() throws IOException {
+        Properties properties = new Properties();
+        URL propertiesURL = Thread.currentThread()
+          .getContextClassLoader()
+          .getResource(StringUtils.defaultString(PROPERTY_FILE_NAME, "hibernate.properties"));
+        try (FileInputStream inputStream = new FileInputStream(propertiesURL.getFile())) {
+            properties.load(inputStream);
+        }
+        return properties;
+    }
+}

hibernate5/src/main/java/com/baeldung/hibernate/lob/model/User.java

@@ -0,0 +1,46 @@
+package com.baeldung.hibernate.lob.model;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Lob;
+import javax.persistence.Table;
+
+@Entity 
+@Table(name="user")
+public class User {
+
+    @Id
+	private String id; 
+	 
+	@Column(name = "name", columnDefinition="VARCHAR(128)") 
+	private String name; 
+	 
+	@Lob 
+	@Column(name = "photo", columnDefinition="BLOB") 
+	private byte[] photo;
+	 
+	public String getId() {
+		return id;
+	}
+	 
+	public void setId(String id) {
+		this.id = id;
+	}
+	
+	public String getName() {
+		return name;
+	}
+	
+	public void setName(String name) {
+		this.name = name;
+	}
+	
+	public byte[] getPhoto() {
+		return photo;
+	}
+	
+	public void setPhoto(byte[] photo) {
+		this.photo = photo;
+	}
+}