Nhibernate Castle.Facilities.AutoTx错误的交易问题”；非法尝试将集合与两个开放会话关联”；

我们正在一个项目中使用一些Castle设施，具体来说是Castle自动事务和NHibernateIntegration设施

最初的设置是每个方法的事务，但是我们在回滚整个工作单元时遇到了问题。一切正常。我们针对每个方法的这些小事务的Castle配置为：

<component id="SessionModule"
             service="BCS.Modules.ISessionModule, BCS.Modules"
             type="BCS.Modules.SessionModule, BCS.Impl"
             isTransactional="true">     
     <transaction>
        <method name="GetCurrentDate" />
        <method name="GetCurrentDateAndTime" />
     </transaction>
  </component>

我们的数据访问层使用NHibernate集成设施，当前已打开会话：

   public class BehaviorElementDataAccess : DataAccessBase<BehaviorElement, Int64>, IBehaviorElementDataAccess {

      public BehaviorElementDataAccess( ISessionManager sessionManager ) : base( sessionManager ) { }


      public T GetById<T>( long id ) where T : BehaviorElement {
         T ret;
         using ( ISession session = SessionManager.OpenSession( ) ) {
            ret = session.Load<T>( id );
            session.Evict( ret );
         }
         return ret;
      }
}

---

有些人有类似的问题，或者在过去遇到过类似的问题？

在BehaviorElementDataAccess.GetById方法中，您正在逐出加载的实体，这显然会将其从会话中删除。但是，您没有对任何相关实体（尤其是本实例中的任何集合）执行任何操作

我怀疑发生的情况是您正在加载实体，然后NHibernate为其关联的集合创建代理，这些代理保留对会话的引用，然后当您退出加载的实体时，代理仍然具有此引用，因此当您稍后在同一会话中再次尝试保存它时，由于实体已被逐出，NHibernate会尝试将实体重新附加到会话，但在执行此操作时，它会尝试重新附加已引用该会话的集合代理，这会导致错误

---

我不知道为什么要逐出GetById方法中的实体-我建议不要这样做，因为它绕过了NHibernate提供的许多功能。

很好，从事务中的会话逐出对象给我们带来了麻烦。谢谢=）

[HibernateException: Illegal attempt to associate a collection with two open sessions]
   NHibernate.Collection.AbstractPersistentCollection.SetCurrentSession(ISessionImplementor session) +242
   NHibernate.Event.Default.OnUpdateVisitor.ProcessCollection(Object collection, CollectionType type) +177
   NHibernate.Event.Default.AbstractVisitor.ProcessEntityPropertyValues(Object[] values, IType[] types) +83
   NHibernate.Event.Default.DefaultSaveOrUpdateEventListener.PerformUpdate(SaveOrUpdateEvent event, Object entity, IEntityPersister persister) +632
   NHibernate.Event.Default.DefaultSaveOrUpdateEventListener.PerformSaveOrUpdate(SaveOrUpdateEvent event) +101
   NHibernate.Event.Default.DefaultSaveOrUpdateEventListener.OnSaveOrUpdate(SaveOrUpdateEvent event) +365
   NHibernate.Impl.SessionImpl.FireSaveOrUpdate(SaveOrUpdateEvent event) +394
   NHibernate.Impl.SessionImpl.SaveOrUpdate(String entityName, Object obj) +392
   NHibernate.Engine.Cascade.CascadeOn(IEntityPersister persister, Object parent, Object anything) +578
   NHibernate.Event.Default.AbstractFlushingEventListener.CascadeOnFlush(IEventSource session, IEntityPersister persister, Object key, Object anything) +157
   NHibernate.Event.Default.AbstractFlushingEventListener.PrepareEntityFlushes(IEventSource session) +364
   NHibernate.Event.Default.AbstractFlushingEventListener.FlushEverythingToExecutions(FlushEvent event) +225
   NHibernate.Event.Default.DefaultAutoFlushEventListener.OnAutoFlush(AutoFlushEvent event) +83
   NHibernate.Impl.SessionImpl.AutoFlushIfRequired(ISet`1 querySpaces) +474
   NHibernate.Impl.SessionImpl.List(CriteriaImpl criteria, IList results) +782
   NHibernate.Impl.CriteriaImpl.List(IList results) +63
   NHibernate.Impl.CriteriaImpl.UniqueResult() +69
   BCS.Modules.Behavior.BehaviorElementDataAccess.GetByName(String name) in c:\Projects\dps\bcs\branches\bcs31\BCS.Impl\Modules\Behavior\BehaviorElementDataAccess.cs:41
   BCS.Modules.Behavior.BehaviorManagerModule.FindBehaviorElementByName(String behaviorName) in c:\Projects\dps\bcs\branches\bcs31\BCS.Impl\Modules\Behavior\BehaviorManagerModule.cs:191
   Castle.Proxies.Invocations.IBehaviorManagerModule_FindBehaviorElementByName.InvokeMethodOnTarget() +147
   Castle.DynamicProxy.AbstractInvocation.Proceed() in e:\OSS.Code\Castle.Core\src\Castle.Core\DynamicProxy\AbstractInvocation.cs:144
   Castle.Facilities.AutoTx.TransactionInterceptor.Intercept(IInvocation invocation) in c:\dev\dotnet\castle\main\Castle.Facilities.AutomaticTransactionManagement\src\Castle.Facilities.AutoTx\TransactionInterceptor.cs:92
   Castle.DynamicProxy.AbstractInvocation.Proceed() in e:\OSS.Code\Castle.Core\src\Castle.Core\DynamicProxy\AbstractInvocation.cs:166
   Castle.Proxies.IBehaviorManagerModuleProxy.FindBehaviorElementByName(String behaviorName) +356
   KAO.Behavior.CommonBehaviorCalculations.SaveGoalActivityMinutes(Member member, JulianDate startingDate, JulianDate endingDate, JulianDate currentDate) in c:\svn\qupio21\KAO\Behavior\CommonBehaviorCalculations.cs:148
   KAO.BusinessRules.TransactionModule.CalculateGoalSetting(Member member, WorkflowContext contextSetting) in c:\svn\qupio21\KAO.BusinessRules\TransactionModule.cs:111
   Castle.Proxies.Invocations.ITransactionModule_CalculateGoalSetting.InvokeMethodOnTarget() +155
   Castle.DynamicProxy.AbstractInvocation.Proceed() in e:\OSS.Code\Castle.Core\src\Castle.Core\DynamicProxy\AbstractInvocation.cs:144
   Castle.Facilities.AutoTx.TransactionInterceptor.Intercept(IInvocation invocation) in c:\dev\dotnet\castle\main\Castle.Facilities.AutomaticTransactionManagement\src\Castle.Facilities.AutoTx\TransactionInterceptor.cs:169
   Castle.DynamicProxy.AbstractInvocation.Proceed() in e:\OSS.Code\Castle.Core\src\Castle.Core\DynamicProxy\AbstractInvocation.cs:166
   Castle.Proxies.ITransactionModuleProxy.CalculateGoalSetting(Member member, WorkflowContext context) +183
   BCS.Web.App.Landing.Tunneling.Goals.cmdCalculate_Click(Object sender, EventArgs e) in c:\svn\qupio21\BCS.Web.App\Landing\Tunneling\Goals.aspx.cs:104
   System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +155
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3707


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.272

   public class BehaviorElementDataAccess : DataAccessBase<BehaviorElement, Int64>, IBehaviorElementDataAccess {

      public BehaviorElementDataAccess( ISessionManager sessionManager ) : base( sessionManager ) { }


      public T GetById<T>( long id ) where T : BehaviorElement {
         T ret;
         using ( ISession session = SessionManager.OpenSession( ) ) {
            ret = session.Load<T>( id );
            session.Evict( ret );
         }
         return ret;
      }
}

 <?xml version="1.0" encoding="utf-8" ?>
<castle>
       <!-- Facilities -->
       <facilities>
          <facility id="atm" type="Castle.Facilities.AutoTx.TransactionFacility, Castle.Facilities.AutoTx">
          </facility>
          <facility id="nhibernate" type="Castle.Facilities.NHibernateIntegration.NHibernateFacility, Castle.Facilities.NHibernateIntegration">
             <factory id="nhibernate.factory" alias="nh.facility.default">
                <settings>
                   <item key="connection.provider">NHibernate.Connection.DriverConnectionProvider</item>
                   <item key="connection.driver_class">NHibernate.Driver.SqlClientDriver</item>
                   <item key="connection.connection_string_name">SQLServerConnection</item>
                   <item key="connection.isolation">ReadCommitted</item>
                   <item key="dialect">NHibernate.Dialect.MsSql2008Dialect</item>
                   <item key="adonet.batch_size">0</item>
                   <item key="use_outer_join">true</item>
                   <item key="query.substitutions">true 1, false 0, yes 'Y', no 'N'</item>
                   <item key="show_sql">true</item>
                   <item key="command_timeout">600</item>
                   <item key="proxyfactory.factory_class">NHibernate.ByteCode.Castle.ProxyFactoryFactory, NHibernate.ByteCode.Castle</item>
                   <item key="cache.use_minimal_puts">true</item>
                </settings>
                <assemblies>
                   <assembly>BCS.Impl</assembly>
                </assemblies>
                <listeners>
                   <listener type="BCS.NHibernate.Types.ActivitySaveUpdateListener, BCS.Impl" event="Save"/>
                   <listener type="BCS.NHibernate.Types.ActivitySaveUpdateListener, BCS.Impl" event="Update"/>
                   <listener type="BCS.NHibernate.Types.ActivitySaveUpdateListener, BCS.Impl" event="SaveUpdate"/>
                   <listener type="BCS.NHibernate.Types.ActivityDeleteListener, BCS.Impl" event="Delete"/>
                </listeners>

             </factory>
          </facility>
       </facilities>

       <include uri="file://modules.cfg.xml" />

    </castle>

Castle.Facilities.AutoTx 2.5.1.0
Castle.Facilities.NHibernateIntegration 1.1.0.0
Castle.Services.Transaction 2.5.0.0 
Castle.Windsor 2.5.1.0
NHibernate.ByteCode.Castle 3.1.0.4000 
NHibernate  3.1.0.4000
ASP.Net 4.0