/// <summary>
/// Checks whether the tables in the <see cref="NHibernate.Cfg.Configuration"/> file exist.
/// </summary>
/// <param name="config">The configuration file to test.</param>
/// <returns>Whether the tables corresponding to the passed configuration file exist.</returns>
private static bool doesTableExist(Configuration config)
{
   ISessionFactory factory = config.BuildSessionFactory();
   using (ISession session = factory.OpenSession())
   {
      // Let's just try to find one object with the session and be happy.
      ICriteria crit;

      // I could use GetClassMetaData here instead, create a new config
      // and then generate that table if no results were found, to make it
      // MUCH more granular. But one step at a time.
      IDictionary classMetaData = factory.GetAllClassMetadata();

      foreach (object key in classMetaData.Keys)
      {
         crit = session.CreateCriteria(classMetaData [key].ClassType);

         // So if the listing doesn't contain any results,
         // tables don't exist, or it just doesn't matter if I redo the table.
         if (crit.List().Count == 0)
            return false;
      }
      
   }
   return true;
}