public class EOActivity extends BaseBean implements Serializable {
    private String activityName;
    private Set<EOUser> eoUser;
...

public class EOUser extends BaseBean implements Serializable {
    private String eoUserId;
    private EOUserAddress eoUserAddress;
...


public class EOUserAddress extends BaseBean implements Serializable {
    private Recipient recipient;
    private String email;
    private String telephone;
    private String fax;
    private String addressType;
    private PostalAddressInfo postalAddress;
    private FtpAccount ftpAccount;
    private String organisationName;
....

<class name="EOActivity" table="cdb_eo_activities">
        <id name="activityName" column="activity"/>
        <set name="eoUser" lazy="false" fetch="join" cascade="all">
             <key foreign-key="none">
                 <column name="customerId"/> 
                 <column name="activity"/>
             </key>
             <one-to-many class="EOUser"/>
         </set>
    </class>

    <class name="EOUser" table="cdb_eo_activity_address">
        <id name="eoUserId" column="eoUserId"/>
        <set name="eOUserAddress" lazy="false" fetch="join" cascade="all">
             <key foreign-key="none">
                 <column name="customerId"/>
                 <column name="activity"/>
                 <column name="eoUserId"/>
             </key>
             <one-to-many class="EOUserAddress"/>
         </set>
    </class>

    <class name="EOUserAddress" table="cdb_eo_activity_address">
        <id name="addressType"/>
        <component name="recipient">
            <property name="title"/>
            <property name="firstName"/>
            <property name="surName"/>
        </component>
        <property name="telephone"/>
        <property name="fax"/>
        <property name="email"/>
        <property name="organisationName"/>
        <many-to-one name="ftpAccount" class="FtpAccount" lazy="false" fetch="join"/>            <!-- no cascade -->
        <many-to-one name="postalAddress" class="PostalAddressInfo" lazy="false" fetch="join"/>  <!-- no cascade -->
    </class>