---------------------------contact-phone.hbm.xml---------------------
<class name="ContactPhone" table="SPP_AGG_CONTACT_PHONE">
    <composite-id>
        <key-property name="phoneNumber" column="PHONE_NUMBER" type="string"/>
        <key-many-to-one name="contact" column="CONTACT_ID" class="ContactInfo" lazy="false"/>
        <key-property name="typeId" column="TYPE_ID" type="integer"/>
    </composite-id>
    <property name="index" column="ORDER_NUMBER" type="integer"/>   
</class>

---------------------------contact.hbm.xml---------------------------
<class name="ContactInfo" table="SPP_AGGREGATOR_CONTACT">
   <id name="id" column="CONTACT_ID" unsaved-value="-1" type="long">
      <generator class="sequence">
         <param name="sequence">SPP_AGG_CONTACT_ID_SEQ</param>
      </generator>
   </id>
   <property name="firstName" column="FIRST_NAME"/>
   <property name="lastName" column="LAST_NAME"/>
   <property name="createUser" column="CREATE_USER" update="false"/>
   <property name="createDate" column="CREATE_DATE" type="calendar_date" update="false"/>
   <property name="updateUser" column="UPDATE_USER"/>
   <property name="updateDate" column="UPDATE_DATE" type="calendar_date"/>
   <many-to-one name="aggregator" class="Aggregator" column="AGGREGATOR_ID" lazy="false" insert="false" update="false"/>      
   <list name="emailAddress" table="SPP_AGG_CONTACT_EMAIL_ADDR" cascade="all">
      <key column="CONTACT_ID"/>
      <list-index column="ORDER_NUMBER"/>
      <element column="EMAIL_ADDRESS" type="string"/>
   </list>
   <list name="phoneNumber" table="SPP_AGG_CONTACT_PHONE" cascade="all">
      <key column="CONTACT_ID" not-null="true"/>
      <list-index column="ORDER_NUMBER"/>
      <one-to-many class="ContactPhone"/>
   </list>
    <set name="notes" table="SPP_CONTACT_NOTES" cascade="save-update" lazy="false" inverse="false" sort="unsorted">
      <key column="CONTACT_ID"/>
      <many-to-many column="NOTE_ID" class="NoteData"/>
    </set>
</class>