nhibernate not saving foreign key Id

Question

I have a simple model I\'m attempting to persist using fluent-nhibernate:

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


        

Answer 1

Seems to be a design issue

If the intent is to avoid reference of person within address on a/c of contextual use of the address

Then i would introduce a "discriminator"

i.e.

Address {AddressId, ...}
PersonAddress : Address {Person, ...}, 
CustomerAddress : Address {Customer, ...}, 
VendorAddress : Address {Vendor, ...}

You could infer the discriminator via formula as well rather specifying a hard discriminator value

Ref : Discriminator based on joined property

Alternatively modify the db structure if allowed / possible

Persons [PersonId, ...]
Addresses [AddressId]
AddressDetails [AddressDetailId, AddressId, ...]

With Mappings as follows (no idea how this would be done in fluent, but is possible via xml) 1.) Person + Addresses via a join table 2.) Address + AddressDetails via reference

I would definitely prefer the first option

cheers ...