[nhibernate-issues] [JIRA] Closed: (NH-782) Update to latest DynamicProxy to fix race condition

[NHibernate J. <mik...@us...>]

     [ http://jira.nhibernate.org/browse/NH-782?page=all ]
     
Sergey Koshcheyev closed NH-782:
--------------------------------

    Resolution: Fixed

> Update to latest DynamicProxy to fix race condition
> ---------------------------------------------------
>
>          Key: NH-782
>          URL: http://jira.nhibernate.org/browse/NH-782
>      Project: NHibernate
>         Type: Bug
>   Components: Core
>     Versions: 1.0.2, 1.2.0.Beta1
>     Reporter: Pawel Pabich
>      Fix For: 1.2.0.Beta2, 1.0.3

>
> .NET farmework 2.0
> MS Sql Server 2005
> This issues is described on the forum:
> http://forum.hibernate.org/viewtopic.php?t=952999&postdays=0&postorder=asc&start=15
> That's how I create my session factory:
> static DataStore()
> {
> sessionFactory = new Configuration().Configure().BuildSessionFactory();
> }
> That's how I create and use my session object
> public void UpdateX(X newX,)
> {
> using (ISession session = sessionFactory.OpenSession())
> {
> using (ITransaction transaction = session.BeginTransaction(IsolationLevel.RepeatableRead))
> {
> // some statements
> transaction.Commit();
> }
> }
> }
> Now when I call UpdateX using two concurrent threads(they use the same session factory but different sessions) I'm getting this error:
> NHibernate.HibernateException: Creating a proxy instance failed ---> System.ArgumentException: Duplicate type name within an assembly.
> at System.Reflection.Emit.AssemblyBuilderData.CheckTypeNameConflict(String strTypeName, TypeBuilder enclosingType)
> at System.Reflection.Emit.TypeBuilder.Init(String fullname, TypeAttributes attr, Type parent, Type[] interfaces, Module module, PackingSize iPackingSize, Int32 iTypeSize, TypeBuilder enclosingType)
> at System.Reflection.Emit.ModuleBuilder.DefineTypeNoLock(String name, TypeAttributes attr, Type parent, Type[] interfaces)
> at System.Reflection.Emit.ModuleBuilder.DefineType(String name, TypeAttributes attr, Type parent, Type[] interfaces)
> at Castle.DynamicProxy.Builder.CodeBuilder.EasyType..ctor(ModuleScope modulescope, String name, Type baseType, Type[] interfaces, Boolean serializable)
> at Castle.DynamicProxy.Builder.CodeGenerators.BaseCodeGenerator.CreateTypeBuilder(String typeName, Type baseType, Type[] interfaces)
> at Castle.DynamicProxy.Builder.CodeGenerators.ClassProxyGenerator.GenerateCode(Type baseClass, Type[] interfaces)
> at Castle.DynamicProxy.Builder.DefaultProxyBuilder.CreateClassProxy(Type theClass, Type[] interfaces)
> at Castle.DynamicProxy.ProxyGenerator.CreateClassProxy(Type baseClass, Type[] interfaces, IInterceptor interceptor, Boolean checkAbstract, Object[] argumentsForConstructor)
> at NHibernate.Proxy.CastleProxyFactory.GetProxy(Object id, ISessionImplementor session)
> --- End of inner exception stack trace ---
> at NHibernate.Proxy.CastleProxyFactory.GetProxy(Object id, ISessionImplementor session)
> at NHibernate.Persister.Entity.AbstractEntityPersister.CreateProxy(Object id, ISessionImplementor session)
> at NHibernate.Impl.SessionImpl.DoLoadByClass(Type clazz, Object id, Boolean checkDeleted, Boolean allowProxyCreation)
> at NHibernate.Impl.SessionImpl.InternalLoad(Type clazz, Object id, Boolean isNullable)
> at NHibernate.Type.EntityType.ResolveIdentifier(Object id, ISessionImplementor session)
> at NHibernate.Type.EntityType.ResolveIdentifier(Object id, ISessionImplementor session, Object owner)
> at NHibernate.Impl.SessionImpl.InitializeEntity(Object obj)
> at NHibernate.Loader.Loader.InitializeEntitiesAndCollections(IList hydratedObjects, Object resultSetId, ISessionImplementor session)
> at NHibernate.Loader.Loader.DoQuery(ISessionImplementor session, QueryParameters queryParameters, Boolean returnProxies)
> at NHibernate.Loader.Loader.DoQueryAndInitializeNonLazyCollections(ISessionImplementor session, QueryParameters queryParameters, Boolean returnProxies)
> at NHibernate.Loader.Loader.DoList(ISessionImplementor session, QueryParameters queryParameters)
> at NHibernate.Loader.Loader.ListIgnoreQueryCache(ISessionImplementor session, QueryParameters queryParameters)
> at NHibernate.Loader.Loader.List(ISessionImplementor session, QueryParameters queryParameters, ISet querySpaces, IType[] resultTypes)
> at NHibernate.Loader.Criteria.CriteriaLoader.List(ISessionImplementor session)
> at NHibernate.Impl.SessionImpl.Find(CriteriaImpl criteria, IList results)
> at NHibernate.Impl.SessionImpl.Find(CriteriaImpl criteria)
> at NHibernate.Impl.CriteriaImpl.List()
> at NHibernate.Impl.CriteriaImpl.UniqueResult()
> at FullTilt.Tools.Services.ScheduledMessage.FTP.PersistentStorage.DataStore.GetScheduledMessageByMessageIndexInternal(Int64 messageIndex, Boolean fetchRelatedObjects, ISession session) in C:\Work\Code\FullTilt\Tools_TableSpam\Services\ScheduledMessage\ScheduledMessage.FTP\PersistentStorage\DataStore.cs:line 289
> at FullTilt.Tools.Services.ScheduledMessage.FTP.PersistentStorage.DataStore.DeleteScheduledMessageByMessageIndexInternal(Int64 messageIndex, ISession session) in C:\Work\Code\FullTilt\Tools_TableSpam\Services\ScheduledMessage\ScheduledMessage.FTP\PersistentStorage\DataStore.cs:line 259
> at FullTilt.Tools.Services.ScheduledMessage.FTP.PersistentStorage.DataStore.UpdateScheduledMessage(ScheduledMessageEntity newMessage, Int32 timeSpan) in C:\Work\Code\FullTilt\Tools_TableSpam\Services\ScheduledMessage\ScheduledMessage.FTP\PersistentStorage\DataStore.cs:line 219
> at TestConsoleApplication.Program.Update(Object obj) in C:\Work\Code\FullTilt\Tools_TableSpam\Services\ScheduledMessage\ScheduledMessage.FTP\TestConsoleApplication\Program.cs:line 219

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