com.tsc9526.monalisa.orm.datasource.DBTasks Maven / Gradle / Ivy
/*******************************************************************************************
* Copyright (c) 2016, zzg.zhou(11039850@qq.com)
*
* Monalisa is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see .
*******************************************************************************************/
package com.tsc9526.monalisa.orm.datasource;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Timer;
import java.util.TimerTask;
/**
*
* @author zzg.zhou(11039850@qq.com)
*/
public class DBTasks {
private static Map timers=new LinkedHashMap();
public static void schedule(String taskName,TimerTask task,long delay,long period){
if(!timers.containsKey(taskName)){
addSchedule(taskName,task,delay,period);
}
}
private synchronized static void addSchedule(String taskName,TimerTask task,long delay,long period){
if(!timers.containsKey(taskName)){
Timer timer=new Timer(taskName,true);
timers.put(taskName,timer);
if(delay<=0){
task.run();
delay=period;
}
timer.schedule(task,delay,period);
}
}
static void shutdown(){
for(Timer timer:timers.values()){
timer.cancel();
}
}
}