Don't flush the session after an exception occurs - NHibernate

Question

I am developing a ASP.NET MVC web app under .NET 3.5, NHibernate and hosted on Windows Azure. When, the webapp is run from the local development fabric it works fine. Yet, w

Answer 1

I have finally found a solution to my own problem. In case people would be interested, I am posting the solution here.

public class SimpleRoleProvider : RoleProvider 
{
    // isolated session management for the RoleProvider to avoid
    // issues with automated management of session lifecycle.

    public override string[] GetRolesForUser(string username)
    {
        using (var session = GlobalSetup.SessionFactory.OpenSession())
        {
            var users = new UserRepository(session);
            var user = users.Get(username);

            // no role if user is not registered
            if (null == user) return new string[0];

            // default role for registered user
            return user.IsManager ? new[] {"Manager", "User"} : new[] {"User"};
        }
    }
}

Basically what was happening is that the RoleProvider repository does not seem to have the same lifecycle than regular in-view / in-controller repositories. As a result, at the time the RoleProvider is called, the NHibernate session has already been disposed causing the exception observed here above.

I have replaced the code by the following one here above. This one has its own NHibernate session management, and ends up working fine.