nhibernate - NHibernate Mapping-by-Code 的每个子类继承映射表

Question

如何在新的 NHibernate Mapping-By-Code 中的 Table Per Subclass 策略中为此类编写映射:

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; }
}

Answer 1

这是一个略有缩写形式的可能映射

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);
    }
}

您不需要在派生类中重复声明 Id 属性。它继承自父 Person 类。