设计模式（五）学习----装饰模式

package com.lp.ecjtu.patten.decorator;

public interface Component {
    public void Operation();
}

package com.lp.ecjtu.patten.decorator;

public class ConcreteComponent implements Component {

    @Override
    public void Operation() {
        //写相关的业务代码
    }
}

package com.lp.ecjtu.patten.decorator;

public class Decorator implements Component{
    //体现了聚合关系，Decorator是整体，Component部分，Decorator由Component聚合而成
    private Component component;//数据类型为Component的属性
    public Decorator(Component component){//构造方法传入Component组件
        this.component = component;
    }
    public Decorator(){
        
    }

    @Override
    public void Operation() {
        // TODO Auto-generated method stub
        component.Operation();//增强功能
    }

}

package com.lp.ecjtu.patten.decorator;

public class ConcreteDecoratorA extends Decorator {

    @Override
    public void Operation() {
        // TODO Auto-generated method stub
        super.Operation();
    }
}


package com.lp.ecjtu.patten.decorator;

public class ConcreteDecoratorB extends Decorator {

    @Override
    public void Operation() {
        // TODO Auto-generated method stub
        super.Operation();
    }
}

package com.lp.ecjtu.patten.decorator1;
/**
 * 抽象构件
 * @author Administrator
 *
 */
public interface Person {
    public void coding();
}

package com.lp.ecjtu.patten.decorator1;
/**
 * 具体提构件类，要接收附加责任的类，程序员
 * @author Administrator
 *
 */
public class Employee implements Person {

    @Override
    public void coding() {
        System.out.println("程序员加班写程序，写程序啊，最终写完了项目。。。。");
    }

}

package com.lp.ecjtu.patten.decorator1;
/**
 * 装饰类
 * @author Administrator
 *
 */
public class Decorator implements Person{
    private Person Person;
    public Decorator(Person Person){
        
    }

    @Override
    public void coding() {
        Person.coding();
    }

}

package com.lp.ecjtu.patten.decorator1;
/**
 * 具体装饰类，项目经理A职责
 * @author Administrator
 *
 */
public class ManagerDecoratorA extends Decorator{
    private Person person;
    public ManagerDecoratorA(Person person) {
        super(person);
        this.person = person;
    }

    @Override
    public void coding() {//增强父类coding方法的功能
        doEarlyWork();
        person.coding();
    }

    private void doEarlyWork() {
        System.out.println("项目经理A做需求分析");
        System.out.println("项目经理A做架构设计");
        System.out.println("项目经理A做详细设计");
    }
    
}

package com.lp.ecjtu.patten.decorator1;
/**
 * 具体装饰类，项目经理B
 * @author Administrator
 *
 */
public class ManagerDecoratorB extends Decorator{
    private Person person;
    public ManagerDecoratorB(Person person) {
        super(person);
        this.person = person;
    }

    @Override
    public void coding() {//增强父类coding方法的功能
        doEndWork();
        person.coding();
    }

    private void doEndWork() {
        System.out.println("项目经理B做首尾工作");
    }
    
}

package com.lp.ecjtu.patten.decorator1;

public class Client {

    /**
     * @param args
     */
    public static void main(String[] args) {
//        Person employee = new Employee();//要接收户责任的对象（具体构件）
//        Person managerB = new ManagerDecoratorB(employee);//赋予程序员项目经理B的责任
//        Person managerA = new ManagerDecoratorA(managerB);//赋予程序员项目经理A的责任
        new ManagerDecoratorA(new ManagerDecoratorB(new Employee())).coding();;
        //managerA.coding();
        
    }

}