Question

I have the following classes:

class Person
{
    public string Name { get; set; }
}

class Employee : Person
{
    public int Salary { get; set; }
}

class Company
{
    public IList<Person> PeopleWhoAreNotEmployees { get; set; }
}

Person and Employee are mapped using table-per-class-heirarchy strategy.

When I retrieve the PeopleWhoAreNotEmployees collection, I want it only to contain elements that are Person, and NOT Employees.
How can I (fluently) configure the collection to only retrieve elements of the super class?
I think it’s something to do with the Polymorphism property, but I couldn’t really figure out how to do that.

thanks,
Jhonny

EDIT:
following the discussion with Jamie, I feel I need to clarify that the case here isn’t really Person and Employee, but more like Employee and HistoricalEmployee.
Meaning- when an employee ‘dies’, they’re not really deleted,
but they become HistoricalEmployee (with a few more attributes, such as termination date etc.).
Obviously, over time, the number of HistoricalEmployees will exceed the number of Employees by magnitudes,
so I can’t fetch all HistoricalEmployees when I only need current Employees.
Sorry for the ambigiuity of the original question…
J

P.S.
I didn’t change the original question since it would make the answer irrelevant.
a new version of this question is available here

Answer 1

what I ended up doing was using a ‘where’ clause on my property.
the fluent configuration looks like so:

 mapping.HasMany(x => x.Employees)
            .Where("IsFired = 0")