How to write mappings in new NHibernate Mapping-By-Code in Table Per Subclass strategy for this classes:
public class Person
{
public virtual int Id { get; set; }
public virtual string Name { get; set; }
}
public class JuridicalPerson : Person
{
public virtual int Id { get; set; }
public virtual string LegalName { get; set; }
}
public class PrivatePerson : Person
{
public virtual int Id { get; set; }
public virtual bool Sex { get; set; }
}
Here is a possible mapping in a slighly abbreviated form
public class PersonMapping : ClassMapping<Person>
{
public PersonMapping()
{
Table("person");
Id(x => x.Id, m => m.Generator(Generators.Native));
Property(x => x.Name);
}
}
public class JuridicalPersonMapping : JoinedSubclassMapping<JuridicalPerson>
{
public JuridicalPersonMapping()
{
Table("juridical_person");
Key(m => m.Column("person_id"));
Property(x => x.LegalName);
}
}
public class PrivatePersonMapping : JoinedSubclassMapping<PrivatePerson>
{
public PrivatePersonMapping()
{
Table("private_person");
Key(m => m.Column("person_id"));
Property(x => x.Sex);
}
}
You don't need to duplicate declaration of the Id property in the derived classes. It's inherited from the parent Person class.
来源:https://stackoverflow.com/questions/9149083/table-per-subclass-inheritance-mapping-by-nhibernate-mapping-by-code