StructureMap registration to register NHibernate Linq IQueryables for all entity types

gistfile1.cs

    /// <summary>
    /// Creates registrations for NHibernate implementations of IQueryable<> for all derivatives of Entity.
    /// </summary>
    public class QueryableRegistrationConvention : IRegistrationConvention
    {
        private static readonly ILog Log = LogManager.GetLogger(typeof(QueryableRegistrationConvention));

        private static readonly Type OpenQueryableType = typeof(IQueryable<>);

        public void Process(Type type, Registry registry)
        {
            if (!type.IsAbstract && typeof(Entity).IsAssignableFrom(type))
            {
                Log.InfoFormat("Creating StructureMap registration for IQueryable<{0}>, implemented by NHibernate", type.Name);

                var queryableType = OpenQueryableType.MakeGenericType(type);

                registry.For(queryableType).Use(context => 
                {
                    var databaseSession = context.GetInstance<IDatabaseSession>();

                    var queryable = typeof(NhQueryable<>).MakeGenericType(type);
                    var ctor = queryable.GetConstructor(new Type[] { typeof(ISessionImplementor) });

                    return ctor.Invoke(new object[] { databaseSession.Session.GetSessionImplementation() });
                });
            }
        }
    }

Possibly completely evil 😀