NHibernate3新特性初尝

配置文件如下　　

<?xml version="1.0"?>
<configuration>
    <configSections>
        <section name="hibernate-configuration" type="NHibernate.Cfg.ConfigurationSectionHandler,NHibernate"/>
        <section name="syscache" type="NHibernate.Caches.SysCache.SysCacheSectionHandler,NHibernate.Caches.SysCache" />
    </configSections>
    <connectionStrings>
        <add name="db" connectionString="Server=.;Database=NHTest;Trusted_Connection=SSPI"/>
        <add name="nhtest" connectionString="Data Source=orcl; Persist Security Info=True;Integrated Security=False;User ID=nhtest;Password=nhtest;"/>
    </connectionStrings>

    <!--Oracle-->
    <hibernate-configuration xmlns="urn:nhibernate-configuration-2.2">
        <session-factory>
            <property name="proxyfactory.factory_class">NHibernate.ByteCode.Castle.ProxyFactoryFactory,NHibernate.ByteCode.Castle</property>
            <property name="dialect">NHibernate.Dialect.Oracle10gDialect,NHibernate</property>
            <property name="connection.driver_class">NHibernate.Driver.OracleClientDriver,NHibernate</property>
            <property name="connection.connection_string_name">nhtest</property>
            <property name="adonet.batch_size">100</property>
            <property name="show_sql">true</property>
            <property name="hbm2ddl.auto">update</property>

            <property name="cache.provider_class">NHibernate.Caches.SysCache.SysCacheProvider,NHibernate.Caches.SysCache</property>
            <!--<property name="cache.use_second_level_cache">true</property>
            <property name="cache.use_query_cache">true</property>-->

            <!--<class-cache class="Test.Nh3.Domain, Test.Nh3" region="hourly" usage="read-only"/>-->

        </session-factory>
    </hibernate-configuration>
    <syscache>
        <cache region="hourly" expiration="60" priority="3" />
    </syscache>

    <runtime>
        <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
            <dependentAssembly>
                <assemblyIdentity name="NHibernate" publicKeyToken="AA95F207798DFDB4" culture="neutral"/>
                <bindingRedirect oldVersion="0.0.0.0-3.0.0.2002" newVersion="3.0.0.2002"/>
            </dependentAssembly>
        </assemblyBinding>
    </runtime>
</configuration>

 初始化Mapper

 public HbmMapping GetMapping()
        {
            //初始化ObjectRelationalMapper类
            var orm = new ObjectRelationalMapper();

            //TablePerClass：每个类一张表映射策略
            //TablePerClassHierarchy：每个类分层结构一张表映射策略
            //TablePerConcreteClass：每个具体类一张表映射策略
            orm.TablePerClass<Domain>();
            //orm.Patterns.Poids.Add(new GuidCombGeneratorDef());
            //在这里可以调用ObjectRelationalMapper类一些方法配置Domain语义
            //使用orm参数初始化Mapper类
            var mapper = new Mapper(orm);
            //在这里可以调用Mapper类一些方法配置Domain的Mapping
            //调用Mapper类的CompileMappingFor方法编译生成HbmMapping对象
            return mapper.CompileMappingFor(new[] { typeof(Domain) });
           
        }

初始化config

  var nhConfig = new Configuration().Configure();
            nhConfig.AddDeserializedMapping(GetMapping(), null);

            //配置缓存
            nhConfig.SetProperty(NHibernate.Cfg.Environment.UseSecondLevelCache, "true")
                .SetProperty(NHibernate.Cfg.Environment.UseQueryCache, "true")
                .Cache(c => c.Provider<SysCacheProvider>())
                .EntityCache<Domain>(c =>
                {
                    c.Strategy = EntityCacheUsage.ReadWrite;
                    c.RegionName = "hourly";
                });

            //配置数据库架构元数据
            //SchemaMetadataUpdater.QuoteTableAndColumns(nhConfig);
            //创建数据库架构
            //new SchemaExport(nhConfig).Create(false, true);

            var factory = nhConfig.BuildSessionFactory();

            using (var s = factory.OpenSession())
            {
                using (var tx = s.BeginTransaction())
                {
                    var domain = new Domain
                    {
                        Name = "我的测试" + DateTime.Now.ToString(),
                        Address = "中国",
                        Picture=GetPic()
                    };
          
                    s.Save(domain);
                    tx.Commit();
                }
            }

    尽管配置了缓存，性能问题依然出现在picture保存上面，竟然需要20多秒，期待有人能研究出这个解决办法。

 -------------------------------------------------------------

 构造领域模型时需要使用如下代码，等同于在*.hbm.xml文件将实体列映射的类型显式声明

 var mapper = new Mapper(orm);
            mapper.Class<Domain>(dm =>
            {
                dm.Property(x => x.Picture,
                            m => m.Type(NHibernate.NHibernateUtil.BinaryBlob));
            });