Essayant de mapper le schéma suivant à l'aide d'Entity Framework.Entity Framework Mapping Question
- Un client peut avoir plusieurs magasins associés.
- Un magasin peut avoir de nombreux associés client
- Chaque magasin peut avoir 0 ou 1 et seulement 1 TopCustomer (les critères à un TopCustomer est déterminé dans la logique métier)
cette résultats avec le mappage suivant dans VS.
Voici le script DB:
USE [TestDb]
GO
/****** Object: Table [dbo].[Customer] Script Date: 06/20/2009 09:53:52 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[Customer](
[CustomerId] [uniqueidentifier] NOT NULL,
[FirstName] [nvarchar](50) NOT NULL,
[LastName] [nvarchar](50) NOT NULL,
CONSTRAINT [PK_Customer] PRIMARY KEY CLUSTERED
(
[CustomerId] 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
/****** Object: Table [dbo].[Store] Script Date: 06/20/2009 09:53:52 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[Store](
[StoreId] [uniqueidentifier] NOT NULL,
[StoreName] [nvarchar](50) NOT NULL,
[TopCustomer] [uniqueidentifier] NULL,
CONSTRAINT [PK_Store] PRIMARY KEY CLUSTERED
(
[StoreId] 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
/****** Object: Table [dbo].[CustomerStore] Script Date: 06/20/2009 09:53:52 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[CustomerStore](
[CustomerId] [uniqueidentifier] NOT NULL,
[StoreId] [uniqueidentifier] NOT NULL,
CONSTRAINT [PK_CustomerStore] PRIMARY KEY CLUSTERED
(
[CustomerId] ASC,
[StoreId] 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
/****** Object: ForeignKey [FK_CustomerStore_Customer] Script Date: 06/20/2009 09:53:52 ******/
ALTER TABLE [dbo].[CustomerStore] WITH CHECK ADD CONSTRAINT [FK_CustomerStore_Customer] FOREIGN KEY([CustomerId])
REFERENCES [dbo].[Customer] ([CustomerId])
ON UPDATE CASCADE
ON DELETE CASCADE
GO
ALTER TABLE [dbo].[CustomerStore] CHECK CONSTRAINT [FK_CustomerStore_Customer]
GO
/****** Object: ForeignKey [FK_CustomerStore_Store] Script Date: 06/20/2009 09:53:52 ******/
ALTER TABLE [dbo].[CustomerStore] WITH CHECK ADD CONSTRAINT [FK_CustomerStore_Store] FOREIGN KEY([StoreId])
REFERENCES [dbo].[Store] ([StoreId])
ON UPDATE CASCADE
ON DELETE CASCADE
GO
ALTER TABLE [dbo].[CustomerStore] CHECK CONSTRAINT [FK_CustomerStore_Store]
GO
/****** Object: ForeignKey [FK_Store_TopCustomer] Script Date: 06/20/2009 09:53:52 ******/
ALTER TABLE [dbo].[Store] WITH CHECK ADD CONSTRAINT [FK_Store_TopCustomer] FOREIGN KEY([TopCustomer])
REFERENCES [dbo].[Customer] ([CustomerId])
GO
ALTER TABLE [dbo].[Store] CHECK CONSTRAINT [FK_Store_TopCustomer]
GO
Question:
Comment l'association TopCustomer être mis en correspondance avec une seule instance de sans créer de Client une navigation supplémentaire n propriété sur la classe Customer?
Désolé, quelle application utilisez-vous pour effectuer les mappages? – Macarse
Visual Studio 2008 – ehosca