How to map a Collection in NHibernate?

Question

I have a class Contact (base class),a class called Customer and a class called Supplier. Customer and supplier class both derive from Contact.

Customer has a 0..n relat

Answer 1

Another solution if you don't like to use the set from Iesi collections

public class Customer  : Contact
{
   public ICollection Orders
   {
      get; private set;

   }
}

And the mapping like this: