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

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

SqlUser.cs



using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

OracleUser.cs



using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

ITopic.cs



using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

SqlTopic.cs



using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

OracleTopic.cs



using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

IDALFactory.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

SqlFactory.cs



using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

OracleFactory.cs



using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

Client

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using DesignPattern.AbstractFactory.DAL;

Output