Can you set a default for a composite part in a TPC mapping? I have an entity set class like this:
public class Employee()
{
public EmployeeIdentity Id;
public double MonthlySalaryBase;
}
public class EmployeeIdentity()
{
public int DepartmentId;
public int DepartmentEmployeeId;
}
public class SalesEmployee(): Employee
{
public double ComissionRate;
}
public class ProgrammerEmployee(): Employee
{
public int WeeklyExtraHoursAllowed;
}
And I mapped this with Fluent NHibernate like this:
public class EmployeeMap: ClassMap<Employee>
{
public void Employee()
{
Table("employee");
CompositeId().ComponentCompositeIdentifier<EmployeeIdentity)(x => x.Id).
KeyProperty(x => x.Id.DepartmentId, "id_department").
KeyProperty(x => x.Id.DepartmentEmployeeId, "id_department_employee_id");
Map(x => x.MonthlySalaryBase);
}
}
public class SalesEmployeeMap: SubclassMap<SalesEmployee>
{
Table("sales_employee");
KeyColumn("id_department");
KeyColumn("id_department_employee_id");
Map(x => x.ComissionRate)
}
public class ProgrammerEmployeeMap: SubclassMap<ProgrammerEmployee>
{
Table("programmer_employee");
KeyColumn("id_department");
KeyColumn("id_department_employee_id");
Map(x => x.WeeklyExtraHoursAllowed)
}
With this, I must have an id_department column in both the programmer and sales tables, but this column will be the same allways (all sales employees have the same department id). I like to replace the KeyColumn for id_department in both the subclass mappings with a constant, an thus avoid the id_department column in this two tables. This is possible?
