1
採取這種簡單的例子NHibernate的,我可以提高我的映射或查詢
一位工作人員類,它引用了員工類
public class Staff
{
public Staff()
{
Team = new List<Staff>();
}
public virtual int Id { get; set; }
public virtual string Name { get; set; }
public virtual IList<Staff> Team { get; set; }
public virtual Staff Manager { get; set; }
}
流暢映射的其他實例
public class StaffMap : ClassMap<Staff>
{
public StaffMap()
{
Id(x => x.Id);
Map(x => x.Name);
References(x => x.Manager).Column("ManagerId");
HasMany(x => x.Team).KeyColumn("ManagerId").Inverse();
}
}
現在我想要運行一個查詢,該查詢將加載所有員工並熱切加載經理和團隊成員。這是我想出了
IList<Staff> resutls =
session.CreateCriteria<Staff>()
.SetFetchMode("Team", FetchMode.Eager)
.SetResultTransformer(Transformers.DistinctRootEntity)
.List<Staff>();
但是SQL(我想要做什麼)的重複列,2 team2_.ManagerId和2 team2_.Id
SELECT
this_.Id as Id0_1_,
this_.Name as Name0_1_,
this_.ManagerId as ManagerId0_1_,
team2_.ManagerId as ManagerId3_,
team2_.Id as Id3_,
team2_.Id as Id0_0_,
team2_.Name as Name0_0_,
team2_.ManagerId as ManagerId0_0_
FROM [SelfRef].[dbo].[Staff]
this_ left outer join
[SelfRef].[dbo].[Staff] team2_
on this_.Id=team2_.ManagerId
的問題是,這應該是發生了什麼?
我在查詢或地圖中做了什麼錯誤嗎?
或者它是HHib即時通訊使用(這是版本2.1.0.4000)的功能?
非常感謝提前