搭建NHibernate3.2+CodeFirst映射框架

[b]所用程序集：[/b]

1，Iesi.Collections：NHibernate依赖项，用来进行集合运算。

2，NHibernate：版本3.2.0.4000，面向.NET环境的对象/关系数据库映射工具，用来把对象模型表示的对象映射到基于SQL的关系模型数据结构中去。

3，ConfOrm：版本2.000，ConfORM是NHibernate贡献者Fabio Maulo大牛设计的，是一个配置ORM的工具，其接口按照ORM思想定义，基于GNU Lesser General Public License协议。其设计思想来源就是 ORuM(Object Relational un-Mapping)。它按照Domain定义帮助我们"自动"实现Mapping。现在仅仅实现了对NHibernate的"自动"Mapping。

[b]映射步骤：[/b]

1，定义实体类Student.cs

public class Student
{
public virtual int Id { get; set; }
public virtual string Name { get; set; }
public virtual int Sex { get; set; }
public virtual int StuId { get; set; }
}

2,ConfOrm配置：

这一步非常重要，是ConfORM的核心所在，实例化一个ObjectRelationalMapper对象，装配实体类对象，实例化Mapper对象，调用Mapper对象的CompileMappingFor()方法自动生成HbmMapping。

public class MappingFactory
{
public HbmMapping CreateMapping()
{
var orm = new ObjectRelationalMapper();
//主键生成策略
orm.Patterns.PoidStrategies.Add(new NativePoidPattern());
orm.TablePerClass(new[] { typeof(Student), typeof(NewStudent) });
//实体关系映射
//orm.ManyToOne<Student, Class>();
//继承映射
//mapper.JoinedSubclass<DatabaseTable>(cm => { cm.Key(k => { k.Column("Id"); }); });
//mapper.JoinedSubclass<ExcelTable>(cm => { cm.Key(k => { k.Column("Id"); }); });

//属性约束映射
//CommonPropertyMapper(ref mapper);
//EntityPropertyMapper(ref mapper);
var mapper = new Mapper(orm);
var hc = mapper.CompileMappingFor(Assembly.Load(typeof(Student).Namespace).GetTypes());
return hc;
//return mapper.CompileMappingFor(new[] { typeof(Student) });
}

///// <summary>
///// 公共属性约束映射
///// </summary>
///// <param name="mapper"></param>
//private void CommonPropertyMapper(ref Mapper mapper)
//{
//    //DBType mapping
//    mapper.AddPropertyPattern(mi => mi.GetPropertyOrFieldType() == typeof(bool),
//        pm => { pm.Column(cm => cm.SqlType("bit")); });

//    mapper.AddPropertyPattern(mi => mi.GetPropertyOrFieldType() == typeof(decimal),
//        pm => { pm.Column(cm => cm.SqlType("decimal(18,2)")); });

//    //mapper.AddPropertyPattern(mi => mi.GetPropertyOrFieldType() == typeof(DateTime),
//    //    pm => { pm.Column(cm => cm.SqlType("nvarchar(30)")); });

//    mapper.AddPropertyPattern(mi => mi.GetPropertyOrFieldType() == typeof(bool?),
//        pm => { pm.Column(cm => cm.SqlType("bit")); });

//    mapper.AddPropertyPattern(mi => mi.GetPropertyOrFieldType() == typeof(string) && mi.Name.Contains("Email"),
//        pm => { pm.Length(100); });

//    mapper.AddPropertyPattern(mi => mi.GetPropertyOrFieldType() == typeof(string) && mi.Name.Contains("MobilePhone"),
//        pm => pm.Length(100));

//    mapper.AddPropertyPattern(mi => mi.GetPropertyOrFieldType() == typeof(string) && mi.Name.Contains("TelPhone"),
//        pm => pm.Length(100));

//    mapper.AddPropertyPattern(mi => mi.GetPropertyOrFieldType() == typeof(string) && mi.Name.Contains("Remark"),
//        pm => pm.Length(1000));

//    mapper.AddPropertyPattern(mi => mi.GetPropertyOrFieldType() == typeof(string) && mi.Name.Contains("Description"),
//        pm => pm.Length(1000));

//    mapper.AddPropertyPattern(mi => mi.GetPropertyOrFieldType() == typeof(string) && mi.Name.Contains("Summary"),
//        pm => pm.Length(200));

//    mapper.AddPropertyPattern(mi => mi.GetPropertyOrFieldType() == typeof(string) && mi.Name.Contains("Details"),
//        pm => pm.Length(1000));

//    mapper.AddPropertyPattern(mi => mi.GetPropertyOrFieldType() == typeof(string) && mi.Name.Equals("Detail"),
//        pm => pm.Length(8000));

//    mapper.AddPropertyPattern(mi => mi.GetPropertyOrFieldType() == typeof(string) && mi.Name.Equals("Name", StringComparison.CurrentCultureIgnoreCase),
//        pm => { pm.Length(100); pm.NotNullable(true); });

//    mapper.AddPropertyPattern(mi => mi.GetPropertyOrFieldType() == typeof(string) && mi.Name.Equals("Account"),
//        pm => { pm.Length(32); pm.NotNullable(true); });

//    mapper.AddPropertyPattern(mi => mi.GetPropertyOrFieldType() == typeof(string) && mi.Name.Contains("Num"),
//        pm => { pm.Length(30); pm.NotNullable(true); });

//    mapper.AddPropertyPattern(mi => mi.GetPropertyOrFieldType() == typeof(string) && mi.Name.Contains("Unit"),
//        pm => { pm.Length(10); pm.NotNullable(true); });

//    mapper.AddPropertyPattern(mi => mi.GetPropertyOrFieldType() == typeof(string) && mi.Name.Contains("Password"),
//        pm => { pm.NotNullable(true); });

//    mapper.AddPropertyPattern(mi => mi.GetPropertyOrFieldType() == typeof(string) && mi.Name.Contains("State"),
//        pm => pm.NotNullable(true));

//    mapper.AddPropertyPattern(mi => mi.GetPropertyOrFieldType() == typeof(string) && mi.Name.Contains("Address"),
//        pm => pm.Length(200));

//}

///// <summary>
///// 实体属性约束映射
///// </summary>
///// <param name="mapper"></param>
//private void EntityPropertyMapper(ref Mapper mapper)
//{
//    mapper.Class<Goods>(cm =>
//    {
//        cm.Property(q => q.Details, pm =>
//        {
//            pm.Length(int.MaxValue);
//        });
//    });

//}
}

View Code

3，读取配置：

这一步关键环节是调用Configuration对象的AddDeserializedMapping()方法添加HbmMapping和配置元数据。

public static class NhConfig
{
private static readonly ISessionFactory _sessionFactory;
private static Configuration _configuration;

static NhConfig()
{
try
{
_configuration = new Configuration();
var mapping = new MappingFactory().CreateMapping();
_configuration.AddDeserializedMapping(mapping, null);
var a = _configuration.Configure();
_sessionFactory = a.BuildSessionFactory();
}
catch (Exception e)
{
throw e;
}
}

public static Configuration Configuration
{
get { return _configuration; }
}

public static ISessionFactory SessionFactory
{
get { return _sessionFactory; }
}
}

4，运行方法进行映射：

public class MappingTestController : Controller
{
//
// GET: /MappingTest/

public ActionResult Index()
{
try
{
var update = new SchemaUpdate(NhConfig.Configuration);
update.Execute(true, true);
}
catch (Exception)
{

throw;
}

return View();
}

}

配置文件web.config

<?xml version="1.0" encoding="utf-8"?>
<!--
有关如何配置 ASP.NET 应用程序的详细信息，请访问 http://go.microsoft.com/fwlink/?LinkId=169433 -->
<configuration>
<configSections>
<section name="hibernate-configuration" type="NHibernate.Cfg.ConfigurationSectionHandler,NHibernate" />
</configSections>
<appSettings>
<add key="webpages:Version" value="2.0.0.0" />
<add key="webpages:Enabled" value="false" />
<add key="PreserveLoginUrl" value="true" />
<add key="ClientValidationEnabled" value="true" />
<add key="UnobtrusiveJavaScriptEnabled" value="true" />

</appSettings>
<connectionStrings>
<add name="connection_string" connectionString="Data Source=.;Initial Catalog=SCB;User ID=sa;Password=123123;" />
</connectionStrings>
<hibernate-configuration xmlns="urn:nhibernate-configuration-2.2">
<session-factory name="NHibernate.Test">
<property name="connection.driver_class">NHibernate.Driver.SqlClientDriver</property>
<property name="connection.connection_string_name">connection_string</property>
<property name="adonet.batch_size">10</property>
<property name="show_sql">false</property>
<property name="dialect">NHibernate.Dialect.MsSql2008Dialect</property>
<property name="command_timeout">60</property>
<property name="query.substitutions">true 1, false 0, yes 'Y', no 'N'</property>
</session-factory>
</hibernate-configuration>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="NHibernate" publicKeyToken="aa95f207798dfdb4" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-3.3.1.4000" newVersion="3.2.0.4000" />
</dependentAssembly>
</assemblyBinding>
</runtime>
<system.serviceModel>
<bindings />
<client />
</system.serviceModel>
<system.web>
<httpRuntime targetFramework="4.5" />
<compilation debug="true" targetFramework="4.5" />
<pages>
<namespaces>
<add namespace="System.Web.Helpers" />
<add namespace="System.Web.Mvc" />
<add namespace="System.Web.Mvc.Ajax" />
<add namespace="System.Web.Mvc.Html" />
<add namespace="System.Web.Routing" />
<add namespace="System.Web.WebPages" />
</namespaces>
</pages>
</system.web>
<system.webServer>
<validation validateIntegratedModeConfiguration="false" />
<handlers>
<remove name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" />
<remove name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" />
<remove name="ExtensionlessUrlHandler-Integrated-4.0" />
<add name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness32" responseBufferLimit="0" />
<add name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness64" responseBufferLimit="0" />
<add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
</handlers>
</system.webServer>
</configuration>