Using stateless sessions

When processing large amounts of data, you can usually improve performance by using an API that's closer to the bare metal, often times trading off some higher-level features in the process. In NHibernate, this high performance, low-level API is the stateless session.

Here we'll use a stateless session to update our movie prices.

Getting ready

Complete the Getting Ready instructions at the beginning of Chapter 4, Queries.

How to do it...

1. Add a new folder named Stateless to the QueryRecipes project.

2. Create a class named Recipe in the folder:

   using NH4CookbookHelpers.Queries;
   using NH4CookbookHelpers.Queries.Model;
   using NHibernate;
   using NHibernate.Linq;
   using System;
   using System.Linq;
   
   namespace QueryRecipes.Stateless
   {
     public class Recipe : QueryRecipe
     {
       
     }
   }

3. To create some data with which to work, add the following method to your Recipe class:

   protected override void AddData(ISessionFactory sessionFactory)
   {
     using (var session = sessionFactory.OpenStatelessSession...