Core Design Patterns(11) Abstract Factory 抽象工厂模式

VS 2008

针对多个平行产品体系的产品创建问题，使用抽象工厂模式

1. 模式UML图

2. 应用

考虑应用程序支持多种数据库的设计，对于领域对象的数据库访问层定义数据访问的接口，分别提供基于SqlServer的实现和基于Oracle的实现。

IUser.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace DesignPattern.AbstractFactory.DAL {

public interface IUser {

void Operation();

}

SqlUser.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace DesignPattern.AbstractFactory.DAL {

public class SqlUser : IUser {

IUser Members

}

OracleUser.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace DesignPattern.AbstractFactory.DAL {

public class OracleUser : IUser {

IUser Members

}

ITopic.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace DesignPattern.AbstractFactory.DAL {

public interface ITopic {

void Operation();

}

SqlTopic.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace DesignPattern.AbstractFactory.DAL {

public class SqlTopic : ITopic {

ITopic Members

}

OracleTopic.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace DesignPattern.AbstractFactory.DAL {

public class OracleTopic: ITopic {

ITopic Members

}

IDALFactory.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace DesignPattern.AbstractFactory.DAL {

public interface IDALFactory {

IUser CreateUser();

ITopic CreateTopic();

}

SqlFactory.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace DesignPattern.AbstractFactory.DAL {

public class SqlFactory : IDALFactory {

IDALFactory Members

}

OracleFactory.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace DesignPattern.AbstractFactory.DAL {

public class OracleFactory : IDALFactory {

IDALFactory Members

}

Client

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using DesignPattern.AbstractFactory.DAL;

namespace DesignPattern.AbstractFactory {

class Program {

static void Main(string[] args) {

IDALFactory sqlFactory = new SqlFactory();

IUser sqlUser = sqlFactory.CreateUser();

sqlUser.Operation();

ITopic sqlTopic = sqlFactory.CreateTopic();

sqlTopic.Operation();

IDALFactory oracleFactory = new OracleFactory();

IUser oracleUser = oracleFactory.CreateUser();

oracleUser.Operation();

ITopic oracleTopic = oracleFactory.CreateTopic();

oracleTopic.Operation();

}

Output

posted on 2008-03-16 00:25 Tristan(GuoZhijian) 阅读(1738) 评论(4) 编辑收藏所属分类: Design Pattern

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