/// <summary>
/// Initializes NHibernate. Adds the mappings based on the assembly, initializes the session factory and opens
/// a long-running global session
/// </summary>
private void InitializeNHibernate()
{
NHibernateConfiguration.Configure();
NHibernateConfiguration.AddAssembly(typeof(Entity).Assembly);
new SchemaUpdate(NHibernateConfiguration).Execute(false, true);
SessionFactory = NHibernateConfiguration.BuildSessionFactory();
GlobalSession = SessionFactory.OpenSession();
}