Question

我有这个模型，它有一个由3个不同的键组成的复合键。当它创建多对多连接表DomainGroupDomainGroup时，我只获得两个键。一个左，一个右。它引用了字段Key，它实际上只是可分辨名称的ToLower()。唯一的问题是可能有许多Domains或DomainScans会在主键中产生冲突，因此我们需要DomainscanId和DomainId来识别我们哪一行实际上是在谈论。更不用说了，我怀疑它会让我在没有错误的情况下发生碰撞。

CREATE TABLE [dbo].[DomainGroupDomainGroup] (
    [DomainGroup_Key]  NVARCHAR (128) NOT NULL,
    [DomainGroup_Key1] NVARCHAR (128) NOT NULL,
    CONSTRAINT [PK_dbo.DomainGroupDomainGroup] PRIMARY KEY CLUSTERED ([DomainGroup_Key] ASC, [DomainGroup_Key1] ASC),
    CONSTRAINT [FK_dbo.DomainGroupDomainGroup_dbo.DomainGroup_DomainGroup_Key] FOREIGN KEY ([DomainGroup_Key]) REFERENCES [dbo].[DomainGroup] ([Key]),
    CONSTRAINT [FK_dbo.DomainGroupDomainGroup_dbo.DomainGroup_DomainGroup_Key1] FOREIGN KEY ([DomainGroup_Key1]) REFERENCES [dbo].[DomainGroup] ([Key])
);

以下是模型：

using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

namespace Server.DomainTools.Controller.Domain.Model
{
    public class DomainGroup
    {

        public virtual ICollection<DomainUser> DomainUsers { get; set; }
        public virtual ICollection<DomainGroup> DomainGroups { get; set; }
        public virtual ICollection<DomainGroup> Parents { get; set; }
        public string Name { get; set; }
        public string DistinguishedName { get; set; }

        [ForeignKey("DomainScan")]
        public int DomainScanId { get; set; }

        [ForeignKey("Domain")]
        public int DomainId { get; set; }

        //Composite primary key
        //DomainScanId is the version
        [Key, Column(Order = 0)]
        public string Key { get; set; }

        [Key, Column(Order = 1)]
        public DomainScan DomainScan { get; set; }

        [Key, Column(Order = 2)]
        public Domain Domain { get; set; }

    }
}

具有复合键的EF多对多只能在连接表

0 个答案: