無法解析屬性：User.Full_Name的：Harrods.Core.Entities.Teacher

Question

我的影片由Spring和功能NHibernate（NHIB 3.1）

供電這個ASP.NET MVC3代碼，我有這樣的錯誤：

could not resolve property: User.Full_Name of: Harrods.Core.Entities.Teacher 

[QueryException: could not resolve property: User.Full_Name of: Harrods.Core.Entities.Teacher] 
NHibernate.Persister.Entity.AbstractPropertyMapping.GetColumns(String propertyName) +104 
NHibernate.Persister.Entity.AbstractPropertyMapping.ToColumns(String alias, String propertyName) +57 
NHibernate.Persister.Entity.BasicEntityPropertyMapping.ToColumns(String alias, String propertyName) +100 
NHibernate.Persister.Entity.AbstractEntityPersister.ToColumns(String alias, String propertyName) +53 
NHibernate.Loader.Criteria.CriteriaQueryTranslator.GetColumns(ICriteria subcriteria, String propertyName) +184 
NHibernate.Loader.Criteria.CriteriaQueryTranslator.GetColumnsUsingProjection(ICriteria subcriteria, String propertyName) +134 
NHibernate.Criterion.CriterionUtil.GetColumnNamesUsingPropertyName(ICriteriaQuery criteriaQuery, ICriteria criteria, String propertyName) +45 
NHibernate.Criterion.CriterionUtil.GetColumnNames(String propertyName, IProjection projection, ICriteriaQuery criteriaQuery, ICriteria criteria, IDictionary`2 enabledFilters) +46 
NHibernate.Criterion.InsensitiveLikeExpression.ToSqlString(ICriteria criteria, ICriteriaQuery criteriaQuery, IDictionary`2 enabledFilters) +101 
NHibernate.Loader.Criteria.CriteriaQueryTranslator.GetWhereCondition(IDictionary`2 enabledFilters) +298 
NHibernate.Loader.Criteria.CriteriaJoinWalker..ctor(IOuterJoinLoadable persister, CriteriaQueryTranslator translator, ISessionFactoryImplementor factory, ICriteria criteria, String rootEntityName, IDictionary`2 enabledFilters) +447 
NHibernate.Loader.Criteria.CriteriaLoader..ctor(IOuterJoinLoadable persister, ISessionFactoryImplementor factory, CriteriaImpl rootCriteria, String rootEntityName, IDictionary`2 enabledFilters) +175 
NHibernate.Impl.SessionImpl.List(CriteriaImpl criteria, IList results) +412 
NHibernate.Impl.CriteriaImpl.List(IList results) +80 
NHibernate.Impl.CriteriaImpl.List() +104 
NHibernate.Criterion.QueryOver`1.List() +96 
NHibernate.Criterion.QueryOver`1.NHibernate.IQueryOver<TRoot>.List() +75 

這是一個問題似乎代碼從現身：

return session.QueryOver<Teacher>() 
        .Where(x => x.User.Full_Name.IsInsensitiveLike("%" + Search + "%")) 
        .OrderBy(x => x.Id).Asc 
        .Skip((skip - 1) * take) 
        .Take(take) 
        .List<Teacher>(); 

我的教師類看起來是這樣的：

[Serializable] 
public class Teacher 
{ 

    public virtual User User { get; set; } 
} 

我的User類看起來是這樣的：

public class User : BaseEntity<User> 
{ 

    public virtual string Email { get; set; } 
    public virtual string Full_Name { get; set; } 
} 

不知道是什麼讓這個問題。一切看起來都對我好。任何人有任何想法什麼是錯的？ :)

不知道，但他們看起來有些相似，但真的不知道如何解決呢：

NHibernate.QueryException with dynamic-component A correct way to load entities by Id list when Id is not mapped

編輯： 試過，但還是給了同樣的錯誤： -

return session.QueryOver<Teacher>() 
        .JoinQueryOver<User>(u => u.User) 
        .Where(x => x.Full_Name.IsInsensitiveLike("%" + FullNameSearchFilter + "%")) 
        .OrderBy(x => x.Id).Asc 
        .Skip((skip - 1) * take) 
        .Take(take) 
        .List<Teacher>(); 

試圖別名以及..：

return session.QueryOver<Teacher>() 
        .JoinAlias(() => ML.User,() => U) 
        .Where(() => U.Full_Name.IsInsensitiveLike("%" + FullNameSearchFilter + "%")) 
        .OrderBy(x => x.Id).Asc 
        .Skip((skip - 1) * take) 
        .Take(take) 
        .List<Teacher>(); 

無論是工作！

編輯2

的SQL代碼被正確顯示;我可以通過我的NHibernate Profiler來驗證。但由於某些原因，一旦數據被加載，它會彈出錯誤和事務回滾。現在看來，這不再僅僅是查詢？

Answer 1

你必須使用一個JoinQueryOver或JoinAlias來完成你的要求的。

What is the difference between JoinQueryOver and JoinAlias?

就拿這篇文章中看看部分Associations和Aliases：http://nhforge.org/blogs/nhibernate/archive/2009/12/17/queryover-in-nh-3-0.aspx

Answer 2

這爲我工作：

User userAlias = null; 
var list = session.QueryOver<Teacher>() 
        .JoinQueryOver(x => x.User,() => userAlias, JoinType.LeftOuterJoin) 
        .Where(x => x.FullName.IsInsensitiveLike("%" + "test" + "%")) 
        .OrderBy(x => x.Id).Asc 
        .Skip(1) 
        .Take(2) 
        .List(); //Without MasterLicensee 

生產SQL（我使用SQL-CE的測試）：

SELECT 
    this_.Id as Id2_1_, 
    this_.User_id as User2_2_1_, 
    useralias1_.Id as Id3_0_, 
    useralias1_.Email as Email3_0_, 
    useralias1_.FullName as FullName3_0_ 
FROM 
    "Teacher" this_ 
left outer join 
    "User" useralias1_ 
     on this_.User_id=useralias1_.Id 
WHERE 
    lower(useralias1_.FullName) like @p0 
ORDER BY 
    useralias1_.Id asc; 
@p0 = '%test%' [Type: String (0)]