Castle ActiveRecord学习笔记一：创建一个实例

Castle ActiveRecord抛弃了Nhibernate的繁杂的配置，采用了一种更加方便的方式来组织项目结构，是对Nhibernate的再次封装，大大简化了开发，下面就来说明其配置过程。

工欲善其事必先利其器，首先我们需要下载，下载地址如下：http://sourceforge.net/projects/castleproject/files/ActiveRecord/3.0/Castle.ActiveRecord-3.0.RC.zip/download 这里下载完成后，我们解压到一个文件夹中，就得到如下的文件排列形式：



然后我们新建一个工程，包含一个User的lib项目和一个winform的项目，具体组织形式如下：



步骤一、现在我们开始来建表，我们建立一个NewsDemo的数据库，然后在其下建立一个Users表，如下所示：

CREATETABLE[dbo].[Users] (
[LogonID][int]IDENTITY (1, 1) NOTNULL ,
[LogonName][varchar] (40) COLLATE Chinese_PRC_CI_AS NULL ,
[Password][varchar] (20) COLLATE Chinese_PRC_CI_AS NULL ,
[EmailAddress][varchar] (40) COLLATE Chinese_PRC_CI_AS NULL ,
[LastLogon][datetime]NULL
) ON[PRIMARY]
GO

步骤二、编写操作Users表的实体类

这个实体类名称是User.cs，具体代码如下：

using System;
using Castle.ActiveRecord;
using System.Collections;

namespace CastleLib
{
[ActiveRecord("Users")]
publicclass User:ActiveRecordBase
{

#region 公共对应属性
privateint _id;

privatestring _name;

privatestring _password;

privatestring _emailAddress;

private DateTime _lastLogon;

[PrimaryKey(PrimaryKeyType.Identity,"LogonID")]
publicint Id
{
get { return _id; }
set { _id = value; }
}

[Property("LogonName")]
publicstring Name
{
get { return _name; }
set { _name = value; }
}

[Property("Password")]
publicstring Password
{
get { return _password; }
set { _password = value; }
}

[Property("EmailAddress")]
publicstring Address
{
get { return _emailAddress; }
set { _emailAddress = value; }
}

[Property("LastLogon")]
public DateTime LastLogon
{
get { return _lastLogon; }
set { _lastLogon = value; }
}
#endregion

publicstaticvoid DeleteAll()
{
DeleteAll(typeof(User));
}

publicstatic IList FindAll()
{
return (IList)FindAll(typeof(User));
}

publicstatic User Find(int id)
{
return (User)FindByPrimaryKey(typeof(User), id);
}
}
}

在这里需要注意的是类的属性，这里是ActiveRecord("Users")，表明对应的是数据库中的Users表，而PrimaryKey则是表明主键，Property则是对应的属性列。编写的所有实体类，都要集继承自ActiveRecordBase类，这个是ActiveRecord操作的基类。上面的代码包含了一部分的CRUD操作，这些操作都是继承自ActiveRecordBase类中的，非常方便编写。

步骤三、配置映射文件

这里的配置，我是直接写到代码中的：

privatevoid Init()
{
// XmlConfigurationSource source = new XmlConfigurationSource("http://www.cnblogs.com/App.config");
//// IConfigurationSource source = ConfigurationSettings.GetConfig("activerecord") as IConfigurationSource;
// ActiveRecordStarter.Initialize(source, typeof(CastleLib.User));

InPlaceConfigurationSource source =new InPlaceConfigurationSource();
IDictionary<string, string> properties =new Dictionary<string, string>();
properties.Add("connection.driver_class", "NHibernate.Driver.SqlClientDriver");
properties.Add("dialect", "NHibernate.Dialect.MsSql2008Dialect");
properties.Add("connection.provider", "NHibernate.Connection.DriverConnectionProvider");
properties.Add("proxyfactory.factory_class", "NHibernate.ByteCode.Castle.ProxyFactoryFactory, NHibernate.ByteCode.Castle");
properties.Add("connection.connection_string", "UID=sa;Password=******;Initial Catalog=NewsDemo;Data Source=.;");
source.Add(typeof(ActiveRecordBase), properties);
ActiveRecordStarter.Initialize(source, typeof(CastleLib.User));
}

需要注意的是，这个配置节 properties.Add("proxyfactory.factory_class", "NHibernate.ByteCode.Castle.ProxyFactoryFactory, NHibernate.ByteCode.Castle"); 一定要添加上，否则会出现未知的错误。

步骤四、操作数据库，这里我贴上具体的代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Castle.ActiveRecord.Framework;
using System.Configuration;
using Castle.ActiveRecord;
using Castle.ActiveRecord.Framework.Config;
using System.Collections;
using CastleLib;

namespace CastleAPP
{
publicpartialclass MainFrm : Form
{
public MainFrm()
{
InitializeComponent();
Init();
}

privatevoid Init()
{
// XmlConfigurationSource source = new XmlConfigurationSource("http://www.cnblogs.com/App.config");
//// IConfigurationSource source = ConfigurationSettings.GetConfig("activerecord") as IConfigurationSource;
// ActiveRecordStarter.Initialize(source, typeof(CastleLib.User));

InPlaceConfigurationSource source =new InPlaceConfigurationSource();
IDictionary<string, string> properties =new Dictionary<string, string>();
properties.Add("connection.driver_class", "NHibernate.Driver.SqlClientDriver");
properties.Add("dialect", "NHibernate.Dialect.MsSql2008Dialect");
properties.Add("connection.provider", "NHibernate.Connection.DriverConnectionProvider");
properties.Add("proxyfactory.factory_class", "NHibernate.ByteCode.Castle.ProxyFactoryFactory, NHibernate.ByteCode.Castle");
properties.Add("connection.connection_string", "UID=sa;Password=251147;Initial Catalog=NewsDemo;Data Source=.;");
source.Add(typeof(ActiveRecordBase), properties);
ActiveRecordStarter.Initialize(source, typeof(CastleLib.User));
}

privatevoid Form1_Load(object sender, EventArgs e)
{
AddUsers();
IList list = CastleLib.User.FindAll();

dataGridView1.DataSource = list;
}

publicvoid AddUsers()
{
CastleLib.User user =new CastleLib.User();
user.Name ="***";
user.Password ="ceshi";
user.Address ="河南省信阳市";
user.LastLogon = DateTime.Now;
user.Create();
}
}
}

这样运行的时候，我们就可以看到数据被正确的填装到数据库中了。