package com.msj.sync.future;

/**

* @author mengxiangcheng mengshaojie@188.com

* @date 2017/3/15 上午9:15

* @copyright ©2017 孟少杰 All Rights Reserved

* @desc Date包装类,用于存放真实数据

*/

public class FutureDate implements Date{

private RealDate realDate;

private boolean isReady = false;

public synchronized void setRealDate(RealDate realDate){

//如果已经装载完毕了，就直接返回

if(isReady){

return;

}

//如果没有装载，进行装载真实对象

this.realDate = realDate;

isReady = true;

//进行通知(很关键，配合wait(),)

notify();

}

@Override

public synchronized String getRequest() {

//如果没加载好，程序就一直阻塞状态

while(!isReady){

try {

wait();

} catch (InterruptedException e) {

e.printStackTrace();

}

}

return this.realDate.getRequest();

}

}