NHibernate执行SQL语句

      如果需要在使用NHibernate作为数据访问层的时候执行SQL语句，可以参考以下方法：

 1using System.Web;
 2using NHibernate;
 3using NHibernate.Cfg;
 4using NHibernate.Engine;
 5
 6namespace NHibernateStudy.DAL
 7{    
 8    public sealed class SessionManager
 9    {
10        private const string CurrentSessionKey = "nhibernate.current_session";
11        private static readonly ISessionFactory sessionFactory;
12
13        static SessionManager()
14        {            
15            //Configuration cf = new Configuration();
16            //cf.AddAssembly("Example.Model");
17            //sessionFactory = cf.Configure().BuildSessionFactory();
18            sessionFactory = new Configuration().Configure().BuildSessionFactory();
19        }
20
21        public static ISession GetCurrentSession()
22        {
23            HttpContext context = HttpContext.Current;
24            ISession currentSession = context.Items[CurrentSessionKey] as ISession;
25
26            if (currentSession == null)
27            {
28                currentSession = sessionFactory.OpenSession();
29                context.Items[CurrentSessionKey] = currentSession;
30            }
31
32            return currentSession;
33        }
34
35        public static void CloseSession()
36        {
37            HttpContext context = HttpContext.Current;
38            ISession currentSession = context.Items[CurrentSessionKey] as ISession;
39
40            if (currentSession == null)
41            {
42                // No current session
43                return;
44            }
45
46            currentSession.Close();
47            context.Items.Remove(CurrentSessionKey);
48        }
49
50        public static void CloseSessionFactory()
51        {
52            if (sessionFactory != null)
53            {
54                sessionFactory.Close();
55            }
56        }
57
58        public static ISessionFactoryImplementor GetISessionFactoryImplementor()
59        {
60            if (sessionFactory != null)
61            {
62                return (ISessionFactoryImplementor)sessionFactory;
63            }
64            else
65            {
66                return null;
67            }
68        }
69    }
70
71}
72

客户端调用：

protected void Test
        {
            ISessionFactoryImplementor sfi = SessionManager.GetISessionFactoryImplementor();
            IDbConnection conn = sfi.OpenConnection();
            
            IDbTransaction tran = conn.BeginTransaction();
            try
            {
                IDbCommand com = conn.CreateCommand();
                //以下可以随意调用ADO.NET了
                tran.Commit();

            }
            catch
            {
                tran.Rollback();
            }     
           
        }