public class AppUser extends  IDEntity {
      private int ID;
      ....
   }

   public class FullExpert extends AbstractExpert {
      private in AppUserID
      private Set<AppUser> Owners = new LinkedHashSet<AppUser>();
      ....
   }

   private class FullExpertise extends AbstractExpertise {
      private FullExpert Expert
      ....
   }

      select e from FullExpertise e join e.expert.owners owner where e.expert.appUserID = ? or owner.ID = ?";

select e from FullExpertise as e
         inner join e.expert as x
         inner join x.owners as w
         where x.appUserID = ? or w.ID = ?

from FullExpertise as e where e.expert.appUserID = ?

    <class name="com.eis.knowledge.expertise.search.FullExpertise" table="expertise">
        <id name="ID" type="java.lang.Integer" unsaved-value="-1">
            <column name="ExpertiseIntID" />
            <generator class="native" />
        </id>
        <many-to-one name="expert" class="com.eis.knowledge.expert.definition.FullExpert" fetch="join" lazy="false">
            <column name="ExpertIntID" not-null="true" />
        </many-to-one>


    <class name="com.eis.knowledge.expert.definition.FullExpert" table="skap_expert">
        <id name="ID" type="java.lang.Integer" unsaved-value="-1">
            <column name="ExpertIntID" />
            <generator class="native" />
        </id>
        <property name="appUserID" type="java.lang.Integer">
            <column name="SkapUserIntID" unique="true" />
        </property>
        <set name="owners" inverse="true" table="expert_owner">
            <key>
                <column name="ExpertIntID" not-null="true" />
            </key>
            <many-to-many column="SkapUserIntID" class="com.eis.appuser.AppUser" order-by="SkapUserExternalID"/>
        </set>


    <class name="com.eis.appuser.AppUser" table="skap_user_extra">
        <id name="ID" type="java.lang.Integer" unsaved-value="-1">
            <column name="SkapUserIntID" />
            <generator class="native" />
        </id>

   select e from FullExpertise as e left join e.expert as x left join x.owners as w where x.appUserID = ? or w.ID = ?