Map collection to a joined-subclass

reisender · **Joined:** Wed Mar 04, 2009 3:26 pm **Posts:** 4

Ok, here's my problem: I have these classes:

Code:

public class Baz{
    public Int32 Id { get; set; }
...
    public virtual IList<Foo> Foos { get; set; }
    public virtual IList<Bar> Bars { get; set; }
...
}

public class Foo{
    public Int32 Id { get; set; }
...
}

public abstract class AbstractBar{
    public Int32 Id { get; set; }
...
}

public class Bar : AbstractBar{
    ...
}

with these database tables:

Code:

TABLE BAZ(ID,...)
TABLE FOO(ID,BAZ_ID...)
TABLE ABSTRACT_BAR(ID,BAZ_ID...)
TABLE BAR(ABSTRACT_BAR_ID,...)

and these mappings:

Code:

<class name="Baz" table="BAZ">
    <id name="Id" column="ID" type="Int32">...</id>
...
        <bag name="Foos" inverse="true" cascade="all">
            <key column="BAZ_ID" />
            <one-to-many class="Foo" />
        </bag>
        <bag name="Bars" inverse="true" cascade="all">
            <key column="BAZ_ID" />
            <one-to-many class="Bar" />
        </bag>
</class>

<class name="Foo" table="FOO">
    <id name="Id" column="ID" type="Int32">...</id>
...
</class>

<class name="AbstractBar" table="ABSTRACT_BAR">
    <id name="Id" column="ID" type="Int32">...</id>
...
    <joined-subclass name="Bar" table="BAR">
        <key column="ABSTRACT_BAR_ID" />
    </joined-subclass>
...
</class>

When I try to load a Baz, the Foos load perfectly, but not the Bars because the column BAZ_ID doesn't exist in BAR, altough it exists in it's parent ABSTRACT_BAR.

Any ideas on how can I map the list of bars? Thanks!