Problem with JoinedSubClassPart in Fluent NHibernate.

Answer 1

After digging a little deeper, I found this fluent-nhibernate issue which explains that, as of r526 AddPart has been deprecated in favour of JoinedSubClass. After modifying my code to that shown below, I was able to get the modeling I was looking for.

In my base class map, I replaced the calls to AddPart with:

JoinedSubClass("MyBaseClassId", MySubClass1Map.AsJoinedSubClass());
JoinedSubClass("MyBaseClassId", MySubClass2Map.AsJoinedSubClass());

And my subclass maps changed to:

public class MySubClass1Map
{
    public static Action<JoinedSubClassPart<MySubClass1>> AsJoinedSubClass()
    {
        return sub =>
        {
             sub.Map(x => x.MySubClass1Property);
        };
    }
}

public class MySubClass2Map
{
    public static Action<JoinedSubClassPart<MySubClass2>> AsJoinedSubClass()
    {
        return sub =>
        {
             sub.Map(x => x.MySubClass2Property);
        };
    }
}