表每个子类继承映射由NHibernate按代码映射 [英] Table Per Subclass Inheritance mapping by NHibernate Mapping-by-Code

问题描述

如何在这个类的每个子类策略的新NHibernate Mapping-By-Code中编写映射：

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; }
}

推荐答案

这是一个可能的映射以略微缩写的形式

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);
    }
}

您无需复制Id的声明派生类中的属性。它继承自父类Person。

You don't need to duplicate declaration of the Id property in the derived classes. It's inherited from the parent Person class.

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