mapping one-to-many relation with Fluent NHibernate does not contain any child when browsing through one-end - fluent-nhibernate

Question

I've created the following domain classes:
public class Car
{
public virtual int Id { get; set; }
public virtual string Registration { get; set; }
public virtual User ResponsibleContact { get; set; }
protected Car()
{}
public Fahrzeug(User responsibleContact, string registration)
{
ResponsibleContact = responsibleContact;
Registration = registration;
ResponsibleContact.Cars.Add(this);
}
}
public class User
{
public virtual int Id { get; set; }
public virtual byte[] EncryptedUsername { get; set; }
public virtual byte[] EncryptedPassword { get; set; }
public virtual IList<Car> Cars { get; private set; }
public virtual string Username
{
get
{
var decrypter = UnityContainerProvider.GetInstance().UnityContainer.Resolve<IRijndaelCrypting>();
return decrypter.DecryptString(EncryptedUsername);
}
}
protected User()
{ }
public User(byte[] encryptedUser, byte[] encryptedPassword)
{
Cars = new List<Car>();
EncryptedUsername = encryptedUser;
EncryptedPassword = encryptedPassword;
}
}
and the mapping classes:
public class CarMap : ClassMap<Car>
{
public CarMap()
{
Id(c => c.Id).GeneratedBy.Native();
Map(c => c.Registration);
References(c => c.ResponsibleContact).Not.Nullable();
}
}
public class UserMap : ClassMap<User>
{
public UserMap()
{
Id(st => st.Id).GeneratedBy.Native();
Map(st => st.EncryptedUsername).Column("Username");
Map(st => st.EncryptedPassword).Column("Password");
HasMany(st => st.Cars).Inverse().AsBag();
}
}
If I query some Member objects, I get the members, but the cars collection is empty!
If I query some Cars I got all the cars with the right Member. But within the member, the cars collection is also empty!
Is there anybody who has an Idea of what can happened?

Answer 1

you have to make sure the foreign key column of the collection and the reference is the same otherwise there is a mismatch.
References(c => c.ResponsibleContact, "ResponsibleContact_id").Not.Nullable();
and
HasMany(st => st.Cars).Inverse().KeyColumn("ResponsibleContact_id");