使用NHibernate 2.1适配Sqlite数据库

配置NHibernate连接sqlite数据库文件，以HSqlite.cfg为例：

<?xml version="1.0" encoding="utf-8"?>

<hibernate-configuration  xmlns="urn:nhibernate-configuration-2.2" >

  <session-factory name="NHibernate.Test">

    <property name="current_session_context_class">thread_static</property>

    <property name="connection.driver_class">NHibernate.Driver.SQLite20Driver</property>

    <property name="connection.connection_string"></property>

    <property name="adonet.batch_size">10</property>

    <property name="show_sql">true</property>

    <property name="dialect">NHibernate.Dialect.SQLiteDialect</property>

    <property name="use_outer_join">true</property>

    <property name="command_timeout">60</property>

    <property name="hbm2ddl.auto">update</property>

    <property name="query.substitutions">true=1;false=0</property>

    <property name="proxyfactory.factory_class">NHibernate.ByteCode.LinFu.ProxyFactoryFactory, NHibernate.ByteCode.LinFu</property>

    <mapping assembly="InspectClient.Domain"/>

  </session-factory>

</hibernate-configuration>

其中current_session_context_class主要用于配置session类型，winform类型使用thread_static参数，web类型使用web参数。

sessionhelper

　　

public  static class SessionBuilder

    {

        private static readonly ISessionFactory _sessionFactory ;

        private static readonly object _lock = new object();



        static SessionBuilder() 

        {

            lock (_lock)

            {

                _sessionFactory =

                    new Configuration().Configure("HSqlite.cfg.xml")

                        .SetProperty("connection.connection_string", SqliteConfig.DataSource)

                        .BuildSessionFactory();

            }

        }



        #region Session在当前上下文的操作

        private static void BindContext()

        {

            lock (_lock)

            {

                if (!CurrentSessionContext.HasBind(_sessionFactory))

                {

                    CurrentSessionContext.Bind(_sessionFactory.OpenSession());

                }

            }

        }



        private static void UnBindContext()

        {

            lock (_lock)

            {

                if (CurrentSessionContext.HasBind(_sessionFactory))

                {

                    CurrentSessionContext.Unbind(_sessionFactory);

                }

            }

        }



        public static void CloseCurrentSession()

        {

            UnBindContext();

        }



        public static ISession GetCurrentSession()

        {

            BindContext();

            return _sessionFactory.GetCurrentSession();

        }

        #endregion



        #region 关闭SessionFactory（一般在应用程序结束时操作）

        public static void CloseSessionFactory()

        {

            if (!_sessionFactory.IsClosed)

            {

                _sessionFactory.Close();

            }

        }

        #endregion



        #region 打开一个新的Session

        public static ISession OpenSession()

        {

            lock (_lock)

            {

                return _sessionFactory.OpenSession();

            }

        }

        #endregion



    }