public void ActualizarSQL(string sqlUpdate)
        {
            ITransaction tx = null;

            try
            {
                session = NHibernateSessionSingleton.GetSession();
                tx      = session.BeginTransaction();
                int updatedEntities = session.CreateSQLQuery(sqlUpdate).ExecuteUpdate();
                //session.Flush();
                tx.Commit();
            }
            catch
            {
                if (tx != null)
                {
                    tx.Rollback();
                }
                throw;
            }
            finally
            {
                NHibernateSessionSingleton.CloseSession();
            }
        }
        public void Actualizar(T value)
        {
            session = NHibernateSessionSingleton.GetSession();

            using (ITransaction tx = session.BeginTransaction())
            {
                try
                {
                    session.SaveOrUpdate(value);
                    //session.Flush();
                    tx.Commit();
                }
                catch
                {
                    if (tx != null)
                    {
                        tx.Rollback();
                    }
                    throw;
                }
                finally
                {
                    NHibernateSessionSingleton.CloseSession();
                }
            }
        }
        public void Eliminar(T value)
        {
            ITransaction tx = null;

            try
            {
                session = NHibernateSessionSingleton.GetSession();
                tx      = session.BeginTransaction();
                session.Delete(value);
                //session.Flush();
                tx.Commit();
            }
            catch
            {
                if (tx != null)
                {
                    tx.Rollback();
                }
                throw;
            }
            finally
            {
                NHibernateSessionSingleton.CloseSession();
            }
        }
        public void Sincronizar()
        {
            ITransaction tx = null;

            try
            {
                session = NHibernateSessionSingleton.GetSession();
                session.Flush();
            }
            catch
            {
                throw;
            }
            finally
            {
                NHibernateSessionSingleton.CloseSession();
            }
        }