Hi, I have a problem with SessionFactory.GetSession. It throws an error: "No CurrentSessionContext configured (set the property hibernate.current_session_context_class)!"

Hibernate version: 1.2

Mapping documents:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<!-- an ISessionFactory instance -->
<session-factory xmlns='urn:nhibernate-configuration-2.2'>
<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">
Initial Catalog=Northwind;Integrated Security=SSPI
</property>
<property name="hibernate.current_session_context_class">
web
</property>
</session-factory>
</configuration>

HttpModule
public class NHibernateSessionModule : IHttpModule
{
public void Init(HttpApplication context)
{
context.BeginRequest += new EventHandler(Application_BeginRequest);
context.EndRequest += new EventHandler(Application_EndRequest);
}

public void Dispose()
{
}

private void Application_BeginRequest(object sender, EventArgs e)
{
///??? not sure if this is needed
if (ManagedWebSessionContext.HasBind(HttpContext.Current, NHibernateHelper.SessionFactory))
{
ManagedWebSessionContext.Unbind(HttpContext.Current, NHibernateHelper.SessionFactory);
}

ManagedWebSessionContext.Bind(HttpContext.Current,
NHibernateHelper.SessionFactory.GetCurrentSession());
}

private void Application_EndRequest(object sender, EventArgs e)
{
NHibernate.ISession session = ManagedWebSessionContext.Unbind(HttpContext.Current,
NHibernateHelper.SessionFactory);

if (session.Transaction.IsActive)
{
session.Transaction.Rollback();
}

if (session != null)
{
session.Close();
}
}
}

NHibernateHelper

public class NHibernateHelper
{
public static readonly ISessionFactory SessionFactory;

static NHibernateHelper()
{
try
{
Configuration cfg = new Configuration();
cfg.Configure(HostingEnvironment.MapPath(
System.Configuration.ConfigurationManager.AppSettings["NHibernateConfigurationFile"]));
cfg.AddXmlFile(HostingEnvironment.MapPath("~/bin/Category.hbm.xml"));
SessionFactory = cfg.BuildSessionFactory();
}
catch (Exception ex)
{
throw new Exception("NHibernate initialization failed", ex);
}
}

public static ISession GetCurrentSession()
{
return SessionFactory.GetCurrentSession();
}


Error occurs in Application_BeginRequest when executing
ManagedWebSessionContext.Bind(HttpContext.Current,
NHibernateHelper.SessionFactory.GetCurrentSession());

Whatt am I missing here?

Nobody has any ideas what to look for?

Hi

I had the same problem and i solved it by using

<property name="hibernate.current_session_context_class">
NHibernate.Context.ThreadStaticSessionContext, NHibernate
</property>

instead of

<property name="hibernate.current_session_context_class">
web
</property>

:)

Hi,

It seems that Nhibernate does not reconized the web value so
try to use managed_web instead of web.

Oops!!

I did a mistake in my last posting, i mean that i used

<property name="hibernate.current_session_context_class">
NHibernate.Context.WebSessionContext, NHibernate
</property>

I got this from "NHibernate in Action" book. This is what is says in book

NHibernate’s built-in current session context implementations
Short name Description
*managed_web This context was the only one available in NHibernate 1.2.0. However, it is now
deprecated. You should use web instead.
*call This context uses the CallContext API to store the current session. Note that,
althought it works in any kind of application, it isn’t recommended for ASP.NET
2.0 applications.
*thread_static When using this context, sessions are stored in a static field marked with
[ThreadStaticAttribute]. Therefore, each thread has his own session.
* web This context uses the HttpContext API to store the current session. It is
recommended for Web applications (and only works with them).

[/quote]

Now I've been away from NH for a while, and I wonder if anything has changed. Is this now in 1.2.1 release?