<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
    "-//Hibernate/Hibernate Mapping DTD 2.0//EN"
    "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd" >
   
<hibernate-mapping>
   <class name="com.Composite" table="composites">
      <composite-id name="comp_id" class="com.CompositePK">
         <key-property name="id" column="id" type="java.lang.Long"/>
         <key-property name="name" column="name"   type="java.lang.String"/>
      </composite-id>
      <version name="version" type="java.lang.Long" unsaved-value="null"/>
      <bag name="children" inverse="true" lazy="true" cascade="all-delete-orphan">
         <key>
            <column name="id_fk"/>
            <column name="name_fk"/>
         </key>
         <one-to-many class="com.Composite"/>
      </bag>
      <many-to-one name="parent" cascade="save-update" class="com.Composite">
         <column name="id_fk"/>
         <column name="name_fk"/>
      </many-to-one>
      <property name="description" type="java.lang.String"/>
   </class>
</hibernate-mapping>

  public void testAddComposite() throws Exception {
    System.out.println("testAddComposite");
    Session session = sessionFactory.openSession();
    CompositePK pk = new CompositePK(new Long(1), "parent");
    Composite parent = new Composite();
    parent.setComp_id(pk);
    parent.setDescription("parent_desc");
    session.save(parent);
    session.flush();
    //
    session.disconnect();
    session.reconnect();
    List list = session.find("from com.Composite");
    assertEquals(1, list.size());
    Composite p = (Composite)list.iterator().next();
    assertNull(p.getChildren());
  }