c# - TPH 进近服务实施

Question

使用实体框架开发基于 TPH 的实体的最佳方法是什么，例如，如果我在广告网站中有公共字段和特定字段：

public class Ad
{
    // Primary properties
    public int Id { get; set; }
    public string Title { get; set; }
    public string TitleStandard { get; set; }
    public string Version { get; set; }
    public string VersionStandard { get; set; }
    public int Year { get; set; }
    public decimal Price { get; set; }

    // Navigation properties
    public Color Color { get; set; }
    public Member Member { get; set; }
    public Category Category { get; set; }
    public IList<Feature> Features { get; set; }
    public IList<Picture> Pictures { get; set; }
    public IList<Operation> Operations { get; set; }
}

public class AdCar : Ad
{
    public int Kms { get; set; }
    public Model Model { get; set; }
    public Fuel Fuel { get; set; }
}

public class AdBoat : Ad
{
    public int Hours { get; set; }
    public string Model { get; set; }
}

我是否必须为每个子类构建特定的操作：

• CreateAdCar()
• CreateAdBoat()

或者我可以有类似的东西：

• CreateAdCommon()和CreateAdCar()

如何拆分这两个类，这样我就不必重复 Car Ad 类和 Boat Ad 类的所有代码？