<class name="x" table="x">
<id name="ID" type="long" column="ID">
   <generator class="increment"/>
  </id>
    <property name="Status">
      <column name="STATUS"/>
    </property>
   
    <property name="lastName">
      <column name="lastname"/>
    </property>
<property name="firstName">
      <column name="firstname"/>
    </property>
 

<bag name="updates" cascade="all-delete-orphan">
            <key column="ID" not-null="true"/>
            <one-to-many class="x.Update"/>
        </bag>



    </property>

  </class>

x.setFirstName("xxx");
x.setLastName("xxx");
x.setStatus(1);
updated.setUpdated(df.format(today));
updated.setUpdatedBy("xxx");
List <Update> updates = new ArrayList();
updates.add(updated);
x.setUpdates(updates);
Session session = null;
        SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
        session = sessionFactory.openSession();
        Transaction transaction = null;

        try {
           transaction = session.beginTransaction();
           session.save(x);
           transaction.commit();
      } catch (Exception e) {
           if (transaction != null) {
             transaction.rollback();
           }
      }  finally {
           session.close();
      }