So far what i have read ...... session.begintransaction and session.saveorupdate/Delete create two separate session.
i do not know how....but if you have solutions regarding this let me know as well... On Jun 2, 6:48 am, DeepRaj D <[email protected]> wrote: > Hi John, > > I tried using SaveOrUpdate instead of Update. > > Also I missed one thing. While creating the session factory, I am adding > more than one assembly to the configuration object. > > *Code sample* > ** > > files = Directory.GetFiles(src, "*Entities.dll"); > > foreach (string file in files) > > { > > Assembly assembly; > > assembly = Assembly.LoadFrom(file); > > configuration.AddAssembly(assembly); > > } > > Will this be the reason for the above said issue? > > Regards, > Deepraj D > > On Wed, Jun 2, 2010 at 4:56 PM, John Davidson <[email protected]> wrote: > > Try using SaveOrUpdate instead of just Update > > > John Davidson > > > On Wed, Jun 2, 2010 at 4:34 AM, Deepraj <[email protected]> wrote: > > >> HI All, > > >> When I try to update the entity using NHibernate, I am getting the > >> error as follows > > >> "Illegal attempt to associate a collection with two open sessions" > > >> Find below the stack trace > > >> at > > >> NHibernate.Collection.AbstractPersistentCollection.SetCurrentSession(ISessionImplementor > >> session) > >> at NHibernate.Event.Default.OnLockVisitor.ProcessCollection(Object > >> collection, CollectionType type) > >> at NHibernate.Event.Default.AbstractVisitor.ProcessValue(Object > >> value, IType type) > >> at NHibernate.Event.Default.AbstractVisitor.ProcessValue(Int32 i, > >> Object[] values, IType[] types) > >> at > > >> NHibernate.Event.Default.AbstractVisitor.ProcessEntityPropertyValues(Object[] > >> values, IType[] types) > >> at NHibernate.Event.Default.AbstractVisitor.Process(Object obj, > >> IEntityPersister persister) > >> at > > >> NHibernate.Event.Default.AbstractReassociateEventListener.Reassociate(AbstractEvent > >> event, Object entity, Object id, IEntityPersister persister) > >> at > > >> NHibernate.Event.Default.DefaultSaveOrUpdateEventListener.PerformUpdate(SaveOrUpdateEvent > >> event, Object entity, IEntityPersister persister) > >> at > > >> NHibernate.Event.Default.DefaultSaveOrUpdateEventListener.EntityIsDetached(SaveOrUpdateEvent > >> event) > >> at > > >> NHibernate.Event.Default.DefaultUpdateEventListener.PerformSaveOrUpdate(SaveOrUpdateEvent > >> event) > >> at > > >> NHibernate.Event.Default.DefaultSaveOrUpdateEventListener.OnSaveOrUpdate(SaveOrUpdateEvent > >> event) > >> at NHibernate.Impl.SessionImpl.FireUpdate(SaveOrUpdateEvent event) > >> at NHibernate.Impl.SessionImpl.Update(Object obj) > >> at CS3Repository.PreRegHeaderRepository.EditPreRegHeader(ISession > >> session, PreRegHeader PreRegHeaderToUpdate) in E:\generate > >> \PersistentClasses\Temp\CS3Entities\Repository > >> \PreRegHeaderRepository.cs:line 153 > >> at > >> RegEvntServiceBase.RegEvntServiceBase.EditPreRegHeader(PreRegHeader > >> PreRegHeaderToEdit) in E:\generate\PersistentClasses\Temp\RegEvnt > >> \RegEvntService\RegEvntServiceBase.cs:line 102 > > >> Given below is my code > > >> I am opening a session like this > > >> ISession session = nHibernateHelper.OpenSession(); > > >> Inside nHibernateHelper, a static variable is used to create the > >> session factory and each time not null value is checked inorder to > >> create a new session factory. > > >> private static ISessionFactory _sessionFactory; > > >> public static ISessionFactory SessionFactory > >> { > >> get > >> { > >> if (_sessionFactory == null) > >> { > >> Configuration configuration = new Configuration(); > >> configuration.Configure(); > >> ................... > >> } > >> } > >> } > > >> After creating the session, a call is made to open a transaction > >> and then the update statement is executed like > > >> session.Update(...); > > >> Also these are the settings in hibernate.config.xml > > >> <property > > >> name="connection.provider">NHibernate.Connection.DriverConnectionProvider</ > >> property> > >> <property name="dialect">NHibernate.Dialect.MsSql2000Dialect</ > >> property> > >> <property > >> name="connection.driver_class">NHibernate.Driver.SqlClientDriver</ > >> property> > >> <property > >> name="connection.connection_string">Server=DevServer;initial > >> catalog=SportsDB;Trusted_Connection=True</property> > >> <property name="show_sql">false</property> > >> <property > > >> name='proxyfactory.factory_class'>NHibernate.ByteCode.Castle.ProxyFactoryFactory, > >> NHibernate.ByteCode.Castle</property> > >> <property name="current_session_context_class">web</property> > >> <property name='adonet.batch_size'>20</property> > >> <property > >> name='cache.provider_class'>NHibernate.Cache.HashtableCacheProvider</ > >> property> > >> <property name='cache.use_query_cache'>true</property> > >> <property name='default_schema'>SportsDB.dbo</property> > >> <property name='connection.isolation'>ReadCommitted</property> > > >> Also note that cascade = All is given the mapping files.. > > >> <set name="PreRegVols" cascade="all" lazy="true" inverse="true" batch- > >> size="4"> > >> <...> > >> </set> > > >> On seeing a post I removed cascade ="all" from the set tag, but the > >> result is same. > > >> Please help me on this. This is urgent. > > >> Thanks in advance, > > >> Deepraj D > > >> -- > >> You received this message because you are subscribed to the Google Groups > >> "nhusers" group. > >> To post to this group, send email to [email protected]. > >> To unsubscribe from this group, send email to > >> [email protected]<nhusers%[email protected]> > >> . > >> For more options, visit this group at > >>http://groups.google.com/group/nhusers?hl=en. > > > -- > > You received this message because you are subscribed to the Google Groups > > "nhusers" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > > [email protected]<nhusers%[email protected]> > > . > > For more options, visit this group at > >http://groups.google.com/group/nhusers?hl=en. -- You received this message because you are subscribed to the Google Groups "nhusers" group. To post to this group, send email to [email protected]. 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