sql-server - Entity Framework が 1 対多の関係の一部をマッピングしない

Question

Entity Framework について質問があります。データベースを作成し、Entity Framework Power Tools を使用してリバースエンジニアリング Code First オプションを使用し、データベースエンティティのモデルをいくつか作成しました。生み出された関係は、私が期待していたものではありませんでした。

DB には、Work、WorkType、WorkCategory、Person の 4 つのテーブルがあります。WorkType、WorkCategory、および Person はすべて、Work テーブルの外部キーを使用して、Work テーブルとの 1 対多の関係です。

WorkType と WorkCategory の関係は問題ありませんが、Work to Person の関係は無視されています。

これは、work.cs モデルクラスに Person と呼ばれる厳密に型指定された仮想プロパティがなく (WorkType と WorkCategory の場合のように)、WorkMap.cs ファイルに関係が定義されていない (WorkType と WorkCategory の関係が定義されている) ためです。

誰かが私が欠けているものを説明できますか? ありがとう！

生成される Work.cs モデルクラス:

public partial class Work
{
    public Work()
    {
        this.Comments = new List<Comment>();
        this.Files = new List<File>();
    }
    public int WorkId { get; set; }
    public string Title { get; set; }
    public string Description { get; set; }
    public string TechnicalInfo { get; set; }
    public int PersonId { get; set; }
    public int WorkTypeId { get; set; }
    public int WorkCategoryId { get; set; }
    public System.DateTime Created { get; set; }
    public System.DateTime Updated { get; set; }
    public bool Deleted { get; set; }
    public virtual ICollection<Comment> Comments { get; set; }
    public virtual ICollection<File> Files { get; set; }
    public virtual WorkCategory WorkCategory { get; set; }
    public virtual WorkType WorkType { get; set; }
}

EF Power Tools によって生成された workmap.cs マッピング:

public class WorkMap : EntityTypeConfiguration<Work>
{
    public WorkMap()
    {
        // Primary Key
        this.HasKey(t => t.WorkId);

        // Properties
        this.Property(t => t.Title)
            .IsRequired()
            .HasMaxLength(300);

        this.Property(t => t.Description)
            .IsRequired()
            .HasMaxLength(3000);

        this.Property(t => t.TechnicalInfo)
            .HasMaxLength(400);


        // Relationships
        this.HasRequired(t => t.WorkCategory)
            .WithMany(t => t.Works)
            .HasForeignKey(d => d.WorkCategoryId);
        this.HasRequired(t => t.WorkType)
            .WithMany(t => t.Works)
            .HasForeignKey(d => d.WorkTypeId);

    }
}

関係を示す SQL 作成スクリプト:

CREATE TABLE [dbo].[Person](
    [PersonId] [int] IDENTITY(1,1) NOT NULL,
    [Name] [varchar](300) NOT NULL,
    [Description] [varchar](4000) NULL,
    [EmailAddress] [varchar](250) NOT NULL,
    [Password] [varchar](200) NOT NULL,
    [ReputationPoints] [int] NOT NULL,
    [Created] [datetime] NOT NULL,
    [Updated] [datetime] NOT NULL,
    [Deleted] [bit] NULL,
 CONSTRAINT [PK_Person] PRIMARY KEY CLUSTERED 
(
    [PersonId] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]
GO

CREATE TABLE [dbo].[WorkType](
    [WorkTypeId] [int] IDENTITY(1,1) NOT NULL,
    [WorkTypeDesc] [varchar](200) NOT NULL,
 CONSTRAINT [PK_WorkType] PRIMARY KEY CLUSTERED 
(
    [WorkTypeId] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]
GO

CREATE TABLE [dbo].[WorkCategory](
    [WorkCategoryId] [int] IDENTITY(1,1) NOT NULL,
    [WorkCategoryDesc] [varchar](200) NOT NULL,
    [WorkTypeId] [int] NOT NULL,
 CONSTRAINT [PK_WorkCategory] PRIMARY KEY CLUSTERED 
(
    [WorkCategoryId] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]
GO

CREATE TABLE [dbo].[Work](
    [WorkId] [int] IDENTITY(1,1) NOT NULL,
    [Title] [varchar](300) NOT NULL,
    [Description] [varchar](3000) NOT NULL,
    [TechnicalInfo] [varchar](400) NULL,
    [PersonId] [int] NOT NULL,
    [WorkTypeId] [int] NOT NULL,
    [WorkCategoryId] [int] NOT NULL,
    [Created] [datetime] NOT NULL,
    [Updated] [datetime] NOT NULL,
    [Deleted] [bit] NOT NULL,
 CONSTRAINT [PK_Work] PRIMARY KEY CLUSTERED 
(
    [WorkId] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]
GO

CREATE TABLE [dbo].[File](
    [FileId] [int] IDENTITY(1,1) NOT NULL,
    [Filename] [varchar](500) NULL,
    [Url] [varchar](3000) NULL,
    [WorkId] [int] NOT NULL,
    [Created] [datetime] NOT NULL,
    [Updated] [datetime] NOT NULL,
    [Deleted] [bit] NOT NULL,
 CONSTRAINT [PK_File] PRIMARY KEY CLUSTERED 
(
    [FileId] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]
GO

CREATE TABLE [dbo].[Comment](
    [CommentId] [int] IDENTITY(1,1) NOT NULL,
    [CommentText] [varchar](2000) NOT NULL,
    [PersonId] [int] NOT NULL,
    [WorkId] [int] NOT NULL,
    [Created] [datetime] NOT NULL,
    [Updated] [datetime] NOT NULL,
    [Deleted] [bit] NOT NULL,
 CONSTRAINT [PK_Comment] PRIMARY KEY CLUSTERED 
(
    [CommentId] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]
GO



ALTER TABLE [dbo].[Work]  WITH CHECK ADD  CONSTRAINT [FK_Work_Person] FOREIGN KEY([PersonId])
REFERENCES [dbo].[Person] ([PersonId])
GO
ALTER TABLE [dbo].[Work] CHECK CONSTRAINT [FK_Work_Person]
GO

ALTER TABLE [dbo].[Work]  WITH CHECK ADD  CONSTRAINT [FK_Work_WorkCategory] FOREIGN KEY([WorkCategoryId])
REFERENCES [dbo].[WorkCategory] ([WorkCategoryId])
GO
ALTER TABLE [dbo].[Work] CHECK CONSTRAINT [FK_Work_WorkCategory]
GO

ALTER TABLE [dbo].[Work]  WITH CHECK ADD  CONSTRAINT [FK_Work_WorkType] FOREIGN KEY([WorkTypeId])
REFERENCES [dbo].[WorkType] ([WorkTypeId])
GO
ALTER TABLE [dbo].[Work] CHECK CONSTRAINT [FK_Work_WorkType]
GO

ALTER TABLE [dbo].[File]  WITH CHECK ADD  CONSTRAINT [FK_File_Work] FOREIGN KEY([WorkId])
REFERENCES [dbo].[Work] ([WorkId])
GO
ALTER TABLE [dbo].[File] CHECK CONSTRAINT [FK_File_Work]
GO

ALTER TABLE [dbo].[Comment]  WITH CHECK ADD  CONSTRAINT [FK_Comment_Person] FOREIGN KEY([PersonId])
REFERENCES [dbo].[Person] ([PersonId])
GO
ALTER TABLE [dbo].[Comment] CHECK CONSTRAINT [FK_Comment_Person]
GO

ALTER TABLE [dbo].[Comment]  WITH CHECK ADD  CONSTRAINT [FK_Comment_Work] FOREIGN KEY([WorkId])
REFERENCES [dbo].[Work] ([WorkId])
GO
ALTER TABLE [dbo].[Comment] CHECK CONSTRAINT [FK_Comment_Work]
GO

sql-server - Entity Framework が 1 対多の関係の一部をマッピングしない

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