@AssertTrue(message = "Role is disabled")
public Boolean validateRole() {
   return this.getRole().isEnabled();
}

<class name="com.example.orm.GuestType" table="GuestTypes">
   <id name="Id" column="TypeID">
      <generator class="native"/>
   </id>

   <property name="Name" not-null="true"/>
   <property name="AccessCode" not-null="true"/>
   <property name="Enabled" not-null="true" type="boolean" column="Status"/>

   <many-to-one name="Role" column="RoleID" not-null="true" />
   <many-to-one name="Schedule" column="ScheduleID" not-null="true" />
</class>

<class name="com.example.orm.Role" table="Roles">
   <id name="Id" column="RoleID">
      <generator class="native"/>
   </id>
   
   <property name="Name" not-null="true"/>
   <property name="Enabled" not-null="true" type="boolean" column="Status"/>
   
   <many-to-one name="DefaultSchedule" column="DefaultScheduleID" not-null="true" />

   <list name="Tags" table="TagInstances" cascade="save-update" batch-size="50" where="TagID IN (SELECT t.TagID FROM Tags t WHERE t.Type='r')">
      <key column="AppliesTo" />
      <list-index column="Position" />
      <many-to-many class="com.example.orm.Tag" column="TagID" />
   </list>
</class>

<class name="com.example.orm.Tag" table="Tags">
   <id name="id" column="TagID">
      <generator class="native"/>
   </id>
     
   <discriminator column="Type" type="string" />
   
   <property name="Name" not-null="true"/>
   <property name="Inheritance" type="boolean" not-null="true"/>

   <list name="Elements" table="TagElements" batch-size="30">
      <key column="TagID" />
      <list-index column="Position" />
      <one-to-many class="com.example.orm.TagElement" />       
   </list>
   
   <subclass name="com.example.orm.RoleTag" discriminator-value="r">
   </subclass>
   
   <subclass name="com.example.orm.OwnerTag" discriminator-value="o">
   </subclass>
   
   <subclass name="com.example.orm.ComputerTag" discriminator-value="c">
   </subclass>

   <subclass name="com.example.orm.InfractionReasonTag" discriminator-value="i">
   </subclass>
</class>