C# NHibernate“;无法确定X的类型;错误
在升级项目中的NHibernate和FluentNHibernate DLL后,我现在在初始化SessionFactory时引发了“无法确定类型:MyApp.Domain.Entities.AppCategory”异常。我的代码中唯一的变化是调整ForeignKeyConvention的实现,以覆盖C# NHibernate“;无法确定X的类型;错误,c#,nhibernate,fluent-nhibernate,C#,Nhibernate,Fluent Nhibernate,在升级项目中的NHibernate和FluentNHibernate DLL后,我现在在初始化SessionFactory时引发了“无法确定类型:MyApp.Domain.Entities.AppCategory”异常。我的代码中唯一的变化是调整ForeignKeyConvention的实现,以覆盖GetKeyName(成员成员,类型)抽象方法,而不是GetKeyName(PropertyInfo属性,类型) FluentNHibernate的升级DLL从1.0.0.593到1.1.0.685,
GetKeyName(成员成员,类型)
抽象方法,而不是GetKeyName(PropertyInfo属性,类型)
FluentNHibernate的升级DLL从1.0.0.593到1.1.0.685,NHibernate的升级DLL从2.1.0.4000到2.1.2.4000。找到解决方案的部分困难在于我们正在使用的NHibernate版本已经过时,但这是无法改变的,至少现在是这样
我在下面发布了完整的异常以及所有相关的代码和配置。很抱歉这么长时间,但我不知道问题出在哪里
完全异常
FluentNHibernate.Cfg.FluentConfigurationException : An invalid or incomplete configuration was used while creating a SessionFactory. Check PotentialReasons collection, and InnerException for more detail.
----> FluentNHibernate.Cfg.FluentConfigurationException : An invalid or incomplete configuration was used while creating a SessionFactory. Check PotentialReasons collection, and InnerException for more detail.
----> NHibernate.MappingException : Could not compile the mapping document: (XmlDocument)
----> NHibernate.MappingException : Could not determine type for: MyApp.Domain.Entities.AppCategory, MyApp.Domain, Version=1.0.0.76, Culture=neutral, PublicKeyToken=null, for columns: NHibernate.Mapping.Column(AppCategory)
at FluentNHibernate.Cfg.FluentConfiguration.BuildSessionFactory() in d:\Builds\FluentNH\src\FluentNHibernate\Cfg\FluentConfiguration.cs: line 98
at MyFramework.App.DataAccess.NHibernate.Databases.BaseDatabase.CreateSessionFactory() in C:\WIP\VSProjects\MyFramework\src\App\DataAccess\NHibernate\Databases\BaseDatabase.cs: line 115
at MyFramework.App.DataAccess.NHibernate.Databases.BaseDatabase.Init() in C:\WIP\VSProjects\MyFramework\src\App\DataAccess\NHibernate\Databases\BaseDatabase.cs: line 100
at MyApp.DataAccess.SmartStudioUserUnitOfWork.<.ctor>b__0() in SmartStudioUserUnitOfWork.cs: line 28
at MyFramework.App.DataAccess.NHibernate.UnitOfWork`1.Create(FlushMode flushMode) in C:\WIP\VSProjects\MyFramework\src\App\DataAccess\NHibernate\UnitOfWork.cs: line 72
at MyFramework.App.DataAccess.NHibernate.UnitOfWork`1..ctor(Func`1 getBaseDatabase) in C:\WIP\VSProjects\MyFramework\src\App\DataAccess\NHibernate\UnitOfWork.cs: line 37
at MyApp.DataAccess.SmartStudioUserUnitOfWork..ctor() in SmartStudioUserUnitOfWork.cs: line 17
at MyApp.DataAccess.Test.SmartStudioUserDaoTest.create_dao() in SmartStudioUserDaoTest.cs: line 20
--FluentConfigurationException
at FluentNHibernate.Cfg.FluentConfiguration.BuildConfiguration() in d:\Builds\FluentNH\src\FluentNHibernate\Cfg\FluentConfiguration.cs: line 119
at FluentNHibernate.Cfg.FluentConfiguration.BuildSessionFactory() in d:\Builds\FluentNH\src\FluentNHibernate\Cfg\FluentConfiguration.cs: line 93
--MappingException
at NHibernate.Cfg.Configuration.LogAndThrow(Exception exception)
at NHibernate.Cfg.Configuration.AddValidatedDocument(NamedXmlDocument doc)
at NHibernate.Cfg.Configuration.ProcessMappingsQueue()
at NHibernate.Cfg.Configuration.AddDocumentThroughQueue(NamedXmlDocument document)
at NHibernate.Cfg.Configuration.AddXmlReader(XmlReader hbmReader, String name)
at NHibernate.Cfg.Configuration.AddInputStream(Stream xmlInputStream, String name)
at NHibernate.Cfg.Configuration.AddDocument(XmlDocument doc, String name)
at NHibernate.Cfg.Configuration.AddDocument(XmlDocument doc)
at FluentNHibernate.PersistenceModel.Configure(Configuration cfg) in d:\Builds\FluentNH\src\FluentNHibernate\PersistenceModel.cs: line 262
at FluentNHibernate.Automapping.AutoPersistenceModel.Configure(Configuration configuration) in d:\Builds\FluentNH\src\FluentNHibernate\Automapping\AutoPersistenceModel.cs: line 170
at FluentNHibernate.Cfg.AutoMappingsContainer.Apply(Configuration cfg) in d:\Builds\FluentNH\src\FluentNHibernate\Cfg\AutoMappingsContainer.cs: line 84
at FluentNHibernate.Cfg.MappingConfiguration.Apply(Configuration cfg) in d:\Builds\FluentNH\src\FluentNHibernate\Cfg\MappingConfiguration.cs: line 56
at FluentNHibernate.Cfg.FluentConfiguration.BuildConfiguration() in d:\Builds\FluentNH\src\FluentNHibernate\Cfg\FluentConfiguration.cs: line 110
--MappingException
at NHibernate.Mapping.SimpleValue.get_Type()
at NHibernate.Cfg.XmlHbmBinding.ClassBinder.BindProperty(XmlNode node, Property property, IDictionary`2 inheritedMetas)
at NHibernate.Cfg.XmlHbmBinding.ClassBinder.CreateProperty(IValue value, String propertyName, String className, XmlNode subnode, IDictionary`2 inheritedMetas)
at NHibernate.Cfg.XmlHbmBinding.ClassBinder.BindJoin(XmlNode node, Join join, IDictionary`2 inheritedMetas)
at NHibernate.Cfg.XmlHbmBinding.ClassBinder.PropertiesFromXML(XmlNode node, PersistentClass model, IDictionary`2 inheritedMetas, UniqueKey uniqueKey, Boolean mutable, Boolean nullable, Boolean naturalId)
at NHibernate.Cfg.XmlHbmBinding.RootClassBinder.Bind(XmlNode node, HbmClass classSchema, IDictionary`2 inheritedMetas)
at NHibernate.Cfg.XmlHbmBinding.MappingRootBinder.AddRootClasses(XmlNode parentNode, IDictionary`2 inheritedMetas)
at NHibernate.Cfg.XmlHbmBinding.MappingRootBinder.Bind(XmlNode node)
at NHibernate.Cfg.Configuration.AddValidatedDocument(NamedXmlDocument doc)
sessionFactory = fluentConfiguration
.Mappings(m => m.AutoMappings.Add(
AutoMap.AssemblyOf<Application>().Conventions
.Add<CustomForeignKeyConvention>()))
.ExposeConfiguration(new SchemaExport(config).Create(true, false))
.BuildSessionFactory();
public class CustomForeignKeyConvention : ForeignKeyConvention
{
protected override string GetKeyName ( Member member, Type type )
{
if (member == null)
{
return type.Name + "Id";
}
return member.Name + "Id";
}
}
数据库表定义
public class Application
{
public virtual int Id { get; set; }
public virtual string FriendlyName { get; set; }
public virtual AppCategory AppCategory { get; set; }
}
public class AppCategory
{
public virtual int Id { get; private set; }
public virtual string CategoryName { get; set; }
}
CREATE TABLE [dbo].[Application](
[Id] [int] IDENTITY(1,1) NOT NULL,
[FriendlyName] [varchar](255) NOT NULL,
[AppCategoryId] [int] NOT NULL,
CONSTRAINT [PK_Application] PRIMARY KEY CLUSTERED ([Id] ASC)
)
GO
ALTER TABLE [dbo].[Application] WITH CHECK
ADD CONSTRAINT [FK_Application_AppCategory] FOREIGN KEY([AppCategoryId])
REFERENCES [dbo].[AppCategory] ([Id])
GO
ALTER TABLE [dbo].[Application] CHECK CONSTRAINT [FK_Application_AppCategory]
GO
CREATE TABLE [dbo].[AppCategory](
[Id] [int] IDENTITY(1,1) NOT NULL,
[CategoryName] [nvarchar](50) NOT NULL,
CONSTRAINT [PK_AppCategory] PRIMARY KEY CLUSTERED ([Id] ASC)
)
流畅的NHibernate映射
public class ApplicationMappingOverride : IAutoMappingOverride<Application>
{
public void Override(AutoMapping<Application> mapping)
{
mapping.Table("Application");
mapping.Id(x => x.Id);
mapping.Map(x => x.FriendlyName);
mapping.Join("AppCategory", x => x.Map(y => y.AppCategory));
}
}
公共类应用程序应用程序覆盖:IAAutoMappingOverride
{
公共无效替代(自动映射)
{
映射表(“应用程序”);
map.Id(x=>x.Id);
Map(x=>x.FriendlyName);
Join(“AppCategory”,x=>x.Map(y=>y.AppCategory));
}
}
映射XML(从Fluent NHibernate日志消息中提取):
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" default-access="property" auto-import="true" default-cascade="none" default-lazy="true">
<class xmlns="urn:nhibernate-mapping-2.2" mutable="true"
name="MyApp.Domain.Entities.Application, MyApp.Domain, Version=1.0.0.76, Culture=neutral, PublicKeyToken=null" table="Application">
<id name="Id" type="System.Int32, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
<column name="Id" />
<generator class="identity" />
</id>
<property name="FriendlyName" type="System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
<column name="FriendlyName" />
</property>
<join table="AppCategory">
<key>
<column name="ApplicationId" />
</key>
<property name="AppCategory" type="MyApp.Domain.Entities.AppCategory, MyApp.Domain, Version=1.0.0.76, Culture=neutral, PublicKeyToken=null">
<column name="AppCategory" />
</property>
</join>
</class>
</hibernate-mapping>
也许为时已晚,但您仍然会对我找到的解决方案感兴趣。当我试图覆盖我的一个实体的映射时,我遇到了同样的问题 此错误的典型原因是当您尝试为复杂类型调用
Map()
时。在这种情况下,Fluent NHibernate试图找出该实体的类型以映射到相应的数据库类型(例如,int
到integer
,bool
到bit
,等等),只要AppCategory
类型没有这种对应,它就会失败
所以,如果您更改以下行,您的错误可能会得到修复
mapping.Join("AppCategory", x => x.Map(y => y.AppCategory));
对这个
mapping.Join("AppCategory", x => x.References(y => y.AppCategory));
这就是确切的原因。谢谢你提出正确的解决方案。