c# - nhibernate subclass mapping when both subclasses can be materialized -

i have following classes

public class person  {      public virtual int id { get; set; } } public class employee : person {      public virtual int employeeproperty { get; set; } } public class customer : person {      public virtual int customerproperty { get; set; } } 

conceptually same person can both employee , customer. person can exist without either employee or customer record. using table per subclass how can work.

as stands don't see way nhibernate work way. if create person, , try create employee using existing person id, nhibernate still tries insert person. there way nhibernate realize have person , want add employee record?

i prefer not go table per class or table per hierarchy if possible.

you model not correct. if person can both customer , employee, should not use inheritance (an employee is-a person), composition (an employee has-a [corresponding] person or person has-a employee [role])