NHibernate Version: 1.0.3

For example...

I have a class called Location that has a many-to-one relationship with class Product. Class Product also is the base class for two subclasses, Form and Publication (two types of products). I am able to perform a search via criteria like the following in order to get a collection of locations that point to products of type Form (this is just psuedo code) ...

results = session.createcriteria(Location).createcriteria(Product).Add(New Expression.EqExpression("class", "Form").List()

However, what would I have to do in order to find the locations that point to products of type Form whose Form specific properties are of a certain value? I would think that something like this ...

results = session.createcriteria(Location).createcriteria(Product).Add(New Expression.EqExpression("class", "Form").Add(New Expression.EqExpression("FormSpecificProperty", "value").List()

... would produce an error because "FormSpecificProperty" would belong to the Form class and not Product.

Any help would be greatly appreciated :-)

Thinking is overrated, you should try it and see what is happening.
At any rate, the way I would do it is something like:

That's definitely the approach that I would like to take, but is this feature available in 1.0.3? I didn't think it was.

The DetachedCriteria feature that is :-)

No, that is only for 1.2.