public class Phone {
	protected int id;
	protected long version;
	protected String name;
	
	public int getId() { return id; }
	
	public long getVersion() { return version; }
	
	public String getName() { return name; }
	public void setName(String name) { this.name = name; }
}
public class CellPhone extends Phone { }

<hibernate-mapping package="org.example" default-access="field">
	<class name="Phone" table="HT_PHONE">
        <id name="id" column="ID">
            <generator class="org.hibernate.id.enhanced.SequenceStyleGenerator"/>
        </id>
        <version type="long" name="version" column="VERSION" />
        
        <property name="name" />
        
        <joined-subclass name="CellPhone" table="HT_CELLPHONE">
        	<key column="PHONE_ID" />
        </joined-subclass>
    </class>
</hibernate-mapping>

Configuration cfg = new Configuration()
	.addResource("org/example/mapping.xml")
	.setProperty("hibernate.dialect", "org.hibernate.dialect.Oracle10gDialect")
	.setProperty("hibernate.connection.url", "")
	.setProperty("hibernate.connection.username", "")
	.setProperty("hibernate.connection.password", "")
	.setProperty("hibernate.hbm2ddl.auto", "create");

SessionFactory sf = cfg.buildSessionFactory();
Session session = sf.openSession();
Transaction transaction = session.beginTransaction();

// Create a persisted joined-subclass object
CellPhone phone = new CellPhone();
phone.setName("Droid");
session.save(phone);
session.flush();

// Force a version update
// The following line will fail because PHONE_ID doesn't exist on the PHONE table
session.buildLockRequest(LockOptions.UPGRADE)
	.setLockMode(LockMode.PESSIMISTIC_FORCE_INCREMENT)
	.lock(phone);

session.flush();
transaction.commit();

session.close();
sf.close();