Fluent NHibernate 映射引发“Id 未映射”异常

Question

我需要有关 Fluent Nhibernate 中自动映射的帮助。这是我想在我的应用程序中拥有的表（它们很多，但我只想从映射其中的几个开始）

好吧，我想使用AutoMapping 功能，因为我不想为超过 100 个表编写映射类...

不管怎样，这里是创建SessionFactory时抛出的错误（代码在文末）

实体“FilterConfig”没有映射 ID。
使用 Id 方法映射您的身份属性。例如：Id(x => x.Id)。

实体（我希望我正确地创建了它们）：

public partial class UserLogin
{
    public UserLogin()
    {
        this.UserMessages = new List<UserMessage>();
        this.UserMessagesReceivers = new List<UserMessagesReceiver>();
    }

    public virtual int ID { get; set; }
    public virtual int UserTypeID { get; set; }
    public virtual int? StudentID { get; set; }
    public virtual int? HeadmasterID { get; set; }
    public virtual int? ParentID { get; set; }
    public virtual string UniqueID { get; set; }
    public virtual bool ShowMyPhoneNumber { get; set; }
    public virtual bool IsBanned { get; set; }
    public virtual string Login { get; set; }
    public virtual string Password { get; set; }
    public virtual bool WasPasswordSent { get; set; }
    public virtual string Email { get; set; }
    public virtual string UserPicture { get; set; }
    public virtual IList<UserMessage> UserMessages { get; set; }
    public virtual IList<UserMessagesReceiver> UserMessagesReceivers { get; set; }
}

public partial class UserMessage
{
    public UserMessage()
    {
        this.UserMessagesReceivers = new List<UserMessagesReceiver>();
        this.UserMessagesReplies = new List<UserMessagesReply>();
    }

    public virtual int ID { get; set; }
    public virtual DateTime Date { get; set; }
    public virtual DateTime? LastCheckDate { get; set; }
    public virtual int UserLoginID { get; set; }
    public virtual string Description { get; set; }
    public virtual bool HasNonCheckedReplies { get; set; }
    public virtual UserLogin UserLogin { get; set; }
    public virtual IList<UserMessagesReceiver> UserMessagesReceivers { get; set; }
    public virtual IList<UserMessagesReply> UserMessagesReplies { get; set; }
}

public partial class UserMessagesReceiver
{
    public UserMessagesReceiver()
    {
        this.WasMessageChecked = false;
        this.UserMessagesReplies = new List<UserMessagesReply>();
    }

    public virtual int ID { get; set; }
    public virtual int UserMessagesID { get; set; }
    public virtual int ReceiverLoginID { get; set; }
    public virtual bool WasMessageChecked { get; set; }
    public virtual DateTime? LastCheckedDate { get; set; }
    public virtual UserLogin UserLogin { get; set; }
    public virtual UserMessage UserMessage { get; set; }
    public virtual IList<UserMessagesReply> UserMessagesReplies { get; set; }
}

public partial class UserMessagesReply
{
    public UserMessagesReply()
    {
    }

    public virtual int ID { get; set; }
    public virtual DateTime Date { get; set; }
    public virtual int UserMessagesID { get; set; }
    public virtual int? UserMessagesReceiverID { get; set; }
    public virtual string Description { get; set; }
    public virtual UserMessage UserMessage { get; set; }
    public virtual UserMessagesReceiver UserMessagesReceiver { get; set; }
}

配置：

    public class AutomappingConfiguration : DefaultAutomappingConfiguration
    {
        public override bool IsId(Member member)
        {
            return member.Name == member.DeclaringType.Name + "ID";
        }
    }

    private static AutoPersistenceModel CreateAutomappings()
    {
        return AutoMap.AssemblyOf<AutomappingConfiguration>(new AutomappingConfiguration());
    }

    private static ISessionFactory CreateSessionFactory()
    {
        var cfg = new AutomappingConfiguration();
        return Fluently.Configure()
                       .Database(MySQLConfiguration.Standard
                       .ConnectionString("..."))
                       .Mappings(m => m.AutoMappings
                                       .Add(AutoMap.AssemblyOf<UserLogin>(cfg))
                                       .Add(AutoMap.AssemblyOf<UserMessage>(cfg))
                                       .Add(AutoMap.AssemblyOf<UserMessagesReceiver>(cfg))
                                       .Add(AutoMap.AssemblyOf<UserMessagesReply>(cfg)))
                       .BuildSessionFactory();
    }

Answer 1

在您所说的配置中，ID 的名称类似于UserLoginID，但在类中它们被定义为public virtual int ID { get; set; }，因此请更改

return member.Name == member.DeclaringType.Name + "ID";

到

return member.Name == "ID";

一些附加信息：

• CreateAutomappings() 好像没用过
• AutomappingConfiguration 至少应覆盖 ShouldMap(Member) 以过滤命名空间（例如 member.Namespace.StartsWith(typeof(UserMessage).Namespace)），否则迟早也会映射实用程序类等
• AutoMap.AssemblyOf 应按包含类型而不是按类型的程序集调用