I am posting again as my previous query did not get any response. Hopefully I am clearer this time:

I am using hibernate-2.1 with joined-subclass mapping

I have 3 classes BaseAttributes, DerivedAttributes1 and DerivedAttributes2

BaseAttributes{
int baseAttribute;
}

DerivedAttributes1 extends BaseAttributes{
int attribute1;
}


DerivedAttributes2extends BaseAttributes{
int attribute2;
}


I have a Employee Class as shown

Employee{
Set attributes
}

mapping in Employee.hbm.xml

<set
name="attributes"
lazy="true"
inverse="true"
cascade="none"
>
<key>
<column name="EMPLOYEE_ID" />
</key>
<one-to-many
class="persistence.BaseAttributes"
/>
</set>

The set can contain objects of derived type 1 or 2.


I am not able to use a collection filter by using derived class attributes in the query :

session.createFilter(employee.getAttributes(), "where this.attribute1 = xxx");

I get the following error
net.sf.hibernate.QueryException: could not resolve property: attribute1 of: persistence.BaseAttributes [where this.attribute1 = xxx]


Is there a way to handle this in hibernate.

TIA

splash

this is not supported in Hibernate2