[gabriel]

try with this:

Code:

el mapeo me quedo asi

<hibernate-mapping>
    <class name="Model.Person"  table="Person">
        <id name="id" type="integer" column="idPerson">
            <generator class="native"/>
        </id>
     <discriminator column="type" type="character"/>
        <property name="name" type="string" column="Name"/>
        <property name="lastname" type="string" column="Lastname"/>
       <property name="address" type="string" column="address"/>
        <property name="email" type="string" column="email"/>
       
        <subclass name="Model.Enterprise.Boss" discriminator-value="C"/>          
    </class>
</hibernate-mapping>