模式定义
桥接模式(Bridge Pattern)：将抽象部分与它的实现部分分离，使它们都可以独立地变化。它是一种对象结构型模式，又称为柄体(Handle and Body)模式或接口(Interface)模式。
当一个对象由多个对象组合而成，使用桥接模式能减少类数量。
UML类图
- 抽象类(Abstraction) 定义一个成员变量(实现类接口类型) 和赋值方法
- 扩展抽象类(Refined Abstraction) 实现了在抽象类中定义的抽象业务方法，在扩充抽象类中可以调用 在实现类接口中定义的业务方法
- 实现类接口(Implementor) 实现部分的基本操作接口
具体实现类(Concrete Implement) 实现了实现类接口
代码结果
public static class BridgeApp{public static void Run(){Abstraction ab = new RefinedAbstraction();ab.Implementor = new ConcreteImplementorA();ab.Operation();}}public class Abstraction{protected Implementor implementor;public Implementor Implementor{set { implementor = value; }}public virtual void Operation(){implementor.Operation();}}public interface Implementor{void Operation();}public class RefinedAbstraction : Abstraction{public override void Operation(){implementor.Operation();}}public class ConcreteImplementorA : Implementor{public void Operation(){Console.WriteLine("ConcreteImplementorA Operation");}}public class ConcreteImplementorB : Implementor{public void Operation(){Console.WriteLine("ConcreteImplementorB Operation");}}情景模式
现在智能手机品牌越来越多了，其实大家都明白好的手机都是那不同的部件组装下。这里假设手机主要CPU和内存。哈哈只需要修改CPU与内存就可以生产不同类型的手机
public static class BridgeApp{public static void Run(){PhoneOne phone1 = new PhoneOne();phone1.Display();PhoneTwo phone2 = new PhoneTwo();phone2.Display();}}public class PhoneOne{private CPU _cpu = new HPCPU();private RAM _ram = new RAM128();public void Display(){Console.WriteLine("Phone one:");_cpu.Display();_ram.Display();Console.WriteLine("------------------------------------------");}}public class PhoneTwo{private CPU _cpu = new HPCPU();private RAM _ram = new RAM64();public void Display(){Console.WriteLine("Phone two:");_cpu.Display();_ram.Display();Console.WriteLine("------------------------------------------");}}public abstract class CPU{public abstract void Display();}public abstract class RAM{public abstract void Display();}public class RAM64 : RAM{public override void Display(){Console.WriteLine("RMS size is 64");}}public class RAM128 : RAM{public override void Display(){Console.WriteLine("RMS size is 128");}}public class LestinaCPU : CPU{public override void Display(){Console.WriteLine("CPU Type is LestinaCPU");}}public class HPCPU : CPU{public override void Display(){Console.WriteLine("CPU Type is HPCPU");}}
