TPH继承和EF代码优先 - 错误类型的外键约束

Question

我在TPH架构中定义了以下内容：

public abstract class Payment {
        [Key]
        [DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
        public int PaymentId { get; set; }

        public DateTime DateOfPayment { get; set; }
        public double Amount { get; set;}
    }

public class PeerPayment : Payment {

    public PeerPayment() { }

    [ForeignKey("FromUser")]
    public User FromUser { get; set; }
    public int FromUserId { get; set; }

    [ForeignKey("ToUser")]
    public int ToUserId { get; set; }
    public virtual User ToUser { get; set; }

}

public class FeaturePayment : Payment {

    [ForeignKey("FromUser")]
    public User FromUser { get; set; }
    public int FromUserId { get; set; }

    public virtual Feature Feature { get; set; }

    public string StripeTokenId { get; set; }
    public string EmailAddress { get; set; }

}

然后，我的实体关系如下：

public class FeaturePaymentConfiguration : EntityTypeConfiguration<FeaturePayment> {
    public FeaturePaymentConfiguration() {
        HasRequired(s => s.Feature).WithOptional(s => s.FeaturePayment);
    }
}

public class PeerPaymentConfiguration : EntityTypeConfiguration<PeerPayment> {
    public PeerPaymentConfiguration() {
        // One-to-Many
        HasOptional(s => s.Review).WithMany().HasForeignKey(s => s.ReviewId);
    }
}

这个想法是Payments可以是两种类型之一，但只有一种类型对Feature有FK约束。当我执行以下操作时：

            var payment = new PeerPayment() {
                FromUserId = user1.UserId,
                ToUserId = user2.UserId,
                DateOfPayment = DateTime.UtcNow
            };
            db.Payments.Add(payment);
            db.SaveChanges(); 

我收到错误：

  

INSERT语句与FOREIGN KEY约束冲突   “FK_dbo.Payment_dbo.Feature_PaymentId”

TPH继承是否与特定于类型的FK约束不兼容？