What is the best NHibernate session management approach for using in a multithread windows service application?

Question

I have a windows service application that work with multithread. I use NHibernate in data access layer of this application.

What is your suggestion for session management in this application. I read about UNHAddins, Is it a good solution?

Answer 1

I use NHibernate's built in contextual sessions. You can read about them here:

http://nhibernate.info/doc/nhibernate-reference/architecture.html#architecture-current-session

Here is an example of how I use this:

public class SessionFactory
{
    protected static ISessionFactory sessionFactory;
    private static ILog log = LogManager.GetLogger(typeof(SessionFactory));

    //Several functions omitted for brevity

    public static ISession GetCurrentSession()
    {
        if(!CurrentSessionContext.HasBind(GetSessionFactory()))
            CurrentSessionContext.Bind(GetSessionFactory().OpenSession());

        return GetSessionFactory().GetCurrentSession();
    }

    public static void DisposeCurrentSession()
    {
        ISession currentSession = CurrentSessionContext.Unbind(GetSessionFactory());

        currentSession.Close();
        currentSession.Dispose();
    }
}

In addition to this I have the following in my hibernate config file:

<property name="current_session_context_class">thread_static</property>