Bridge Pattern

桥接（Bridge）是用于把抽象化与实现化解耦，使得二者可以独立变化，属于结构型模式。

一个类存在两个独立变化的维度，且这两个维度都需要进行扩展。

 

Boy

package com.dp.bridge;

public class Boy {
	String name;

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}
	
	public void pursue(Girl girl) {
		//Gift gift = new WarmGift(new Ring());
		Gift gift = new WildGift(new Ring());
		give(gift,girl);
	}
	
	public void give(Gift gift,Girl girl) {
		
	}
}

Girl

package com.dp.bridge;

public class Girl {
	String name;

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}
	
}

Gift

package com.dp.bridge;

public class Gift {
	protected GiftImpl impl;
}

WarmGift

package com.dp.bridge;

public class WarmGift extends Gift{

	public WarmGift(GiftImpl impl) {
		this.impl = impl;
	}

}

WildGift

package com.dp.bridge;

public class WildGift extends Gift{
	
	WildGift(GiftImpl impl){
		this.impl = impl;
	}
}

GiftImpl

package com.dp.bridge;

public class GiftImpl {

}

Flower

package com.dp.bridge;

public class Flower extends GiftImpl{

}

Ring

package com.dp.bridge;

public class Ring extends GiftImpl{

}