2009-07-10 61 views
0

我们正在试验当前项目的几个不同的持久层。我们正在尝试POCO/PI方法。我们的候选人之一是LinqToSql。我正在遵循Vijay Mehta在“使用C#2008进行专业LINQ对象关系映射”中介绍的工作,其中POCO和映射文件是手工创建的。LinqtoSQL - 映射问题:无法解析类型为

我有以下POCO:

namespace CIN.CIN2010.DomainModel.Notifications 
{ 
    public abstract class Notification //: Repository.BaseEntity 
    { 

     public Notification(int notificationId, OwnerTag owner, DateTime creationDateTime, string message) 
     { 
      this._notificatonId = notificationId; 
      this._owner = owner; 
      this._creationDateTime = creationDateTime; 
      this._message = message; 
     } 

     // omitted for brevity 
    } 
} 

,我有这样的一个映射文件:

<Database Name="CINFulfillment" xmlns="http://schemas.microsoft.com/linqtosql/mapping/2007"> 
    <Table Name="dbo.tblNotifications" > 
     <Type Name="CIN.CIN2010.DomainModel.Notifications.Notification, CIN.CIN2010.DomainModel" InheritanceCode="0" IsInheritanceDefault="true"> 
     <Column Name="NotificationID" Member="NotificationID" Storage="_NotificationID" DbType="Int NOT NULL IDENTITY" IsPrimaryKey="true" IsDbGenerated="true" AutoSync="OnInsert" /> 
     <Column Name="NotificationTypeID" Member="NotificationTypeID" Storage="_NotificationTypeID" DbType="TinyInt NOT NULL" /> 
     <Column Name="OwnerID" Member="OwnerID" Storage="_OwnerID" DbType="Int NOT NULL" /> 
     <Column Name="OwnerTypeID" Member="OwnerTypeID" Storage="_OwnerTypeID" DbType="TinyInt NOT NULL" /> 
     <Column Name="SubTypeID" Member="SubTypeID" Storage="_SubTypeID" DbType="TinyInt NOT NULL" /> 
     <Column Name="CreationDateTime" Member="CreationDateTime" Storage="_CreationDateTime" DbType="SmallDateTime NOT NULL" /> 
     <Column Name="Message" Member="Message" Storage="_Message" DbType="VarChar(255) NOT NULL" CanBeNull="false" /> 
     <Column Name="RequiresAction" Member="RequiresAction" Storage="_RequiresAction" DbType="Bit NOT NULL" /> 
     <Column Name="ActionTypeID" Member="ActionTypeID" Storage="_ActionTypeID" DbType="TinyInt" /> 
     <Column Name="DueDateTime" Member="DueDateTime" Storage="_DueDateTime" DbType="SmallDateTime" /> 
     <Column Name="CompletedDateTime" Member="CompletedDateTime" Storage="_CompletedDateTime" DbType="SmallDateTime" /> 
     <Column Name="CompletedStatusID" Member="CompletedStatusID" Storage="_CompletedStatusID" DbType="TinyInt NOT NULL" /> 
     </Type> 
    </Table> 
</Database> 

当我尝试加载mappingsource,我结束了一个错误:

Failed CanInstantiateDataContext CIN.CIN2010.Persistence.L2S.Test Test method CIN.CIN2010.Persistence.L2S.Test.ContextTests.CanInstantiateDataContext threw exception: System.TypeInitializationException: The type initializer for 'Nested' threw an exception. ---> System.InvalidOperationException: Mapping Problem: Unable to resolve root for type 'CIN.CIN2010.DomainModel.Notifications.Notification'..

任何想法?

回答

1

从Name属性中删除“,CIN.CIN2010.DomainModel”。 Linq to SQL查找程序集本身。