按代码映射忽略 BagPropertyMapper 中的列名

Mapping-By-Code ignores Column Name in BagPropertyMapper

我遇到了一个问题,我认为这是一个 NHibernate 缺陷。

我的数据库架构,包含一个简单的父子映射:

  TABLE Company
  (
       ID BIGINT PRIMARY KEY
  )

  TABLE CompanyMailRecipient
  (
       ID              BIGINT PRIMARY KEY IDENTITY(1, 1),
       Company_ID      BIGINT NOT NULL FOREIGN KEY REFERENCES Company(id),
       Name            VARCHAR(MAX),
       EmailAddress    VARCHAR(MAX),
       DestinationType TINYINT
  )

我的 class。请注意,CompanyMailRecipient table 有一个名为 EmailAddress 的列,但我的 MailRecipient class 有一个名为 Address.

的列
public enum MessageDestinationType
{
    Normal = 1,
    CC = 2,
    BCC = 3
}

public class MailRecipient
{
    public virtual string Name {get; set }
    public virtual string Address {get; set; } // Different name to the column!
    public virtual MessageDestinationType DestinationType {get; set;}
} 

public class MailConfiguration
{
    private Lazy<IList<MailRecipient>> _recipients = new Lazy<IList<MailRecipient>>(() => new List<MailRecipient>());
    public virtual IList<MailRecipient> Recipients
    {
        get
        {
            return _recipients.Value;
        }
        set
        {
            _recipients = new Lazy<IList<MailRecipient>>(() => value);
        }
    }
}

public class Company
{
     public virtual long Id { get; set; }
     public virtual MailConfiguration MailConfiguration { get; set; }
}

映射代码

mapper.Class<Company>(
       classMapper =>
       {
           classMapper.Table("Company");
           classMapper.Component(
                 company => company.MailConfiguration,
                 componentMapper =>
                 {
                      componentMapper.Bag(mc => mc.Recipients,
                          bagPropertyMapper =>
                          {
                              bagPropertyMapper.Table("CompanyMailRecipient");
                               bagPropertyMapper.Key(mrKeyMapper =>
                               {
                                   mrKeyMapper.Column("Company_Id");
                               });
                           },
                           r => r.Component(
                              mrc =>
                              {

                                  mrc.Property
                                  (
                                     mr => mr.Name, 
                                     mrpm => mrpm.Column("Name")
                                  );
                                  /*****************************/
                                  /* Here's the important bit  */
                                  /*****************************/
                                  mrc.Property
                                  (
                                     mr => mr.Address, 
                                     mrpm => mrpm.Column("EmailAddress");
                                  );
                                  mrc.Property
                                  (
                                      mr => mr.DestinationType, 
                                      mrpm => mrpm.Column("DestinationType")
                                  );
                              };
                           )
                      );
                 }
       }

问题来了:当我尝试查询公司时,出现以下错误(重要部分以粗体显示)

NHibernate.Exceptions.GenericADOException : could not initialize a collection: [Kiosk.Server.Entities.Company.MailConfiguration.Recipients#576][SQL: SELECT recipients0_.Company_Id as Company1_0_, recipients0_.Name as Name0_, recipients0_.Address as Address0_, recipients0_.DestinationType as Destinat4_0_ FROM CompanyMailRecipient recipients0_ WHERE recipients0_.Company_Id=?] ----> System.Data.SqlClient.SqlException : Invalid column name 'Address'. at NHibernate.Loader.Loader.LoadCollection(ISessionImplementor session, Object id, IType type)

但是,如果我更改我的 C# 代码,使我的 MailRecipient class 有一个名为 EmailAddress 而不是 Address 的 属性,一切正常。

好像 NHibernate 忽略了我的列映射。

这是一个 NHibernate 错误,还是我遗漏了什么?

我使用的 NHibernate 版本是 4.0.4.4。


上面的例子有一个一对多的组件挂在一个挂在实体上的组件上。

我发现,如果我去掉了一个间接层,让我的一对多组件直接挂在实体上,那么列名就会生效。

是的,这确实是 NHibernate 中的一个错误。

我作为拉取请求发布了一个修复程序,现在已合并到代码库中。应该是4.1.1之后的版本。