package com.sitech.schedule;

import java.util.HashMap;
import java.util.Map;

import org.apache.log4j.Logger;

/**
 * 任务调度缓存
 * @author   linxc
 * @version  
 * @since    Ver 7.0.0
 * @Date	 2012	Jun 5, 2012		1:52:03 PM
 */
public class ScheduleCache {
	private static Logger logger = Logger.getLogger("LOGER");
	public static Map<String, Scheduler> SCHEDULE_MAP = new HashMap<String, Scheduler>();

	public static Scheduler getScheduler(String scheduleId) {
		synchronized (SCHEDULE_MAP) {
			return SCHEDULE_MAP.get(scheduleId);
		}
	}
	
	public static Map<String, Scheduler> getSchedulerAll(String scheduleId) {
		synchronized (SCHEDULE_MAP) {
			return SCHEDULE_MAP;
		}
	}
	
	public static Scheduler addScheduler(Scheduler scheduler) {
		String scheduleId = scheduler.getScheduleId();
		synchronized (SCHEDULE_MAP) {
			if(SCHEDULE_MAP.get(scheduleId) != null){
				SCHEDULE_MAP.remove(scheduleId);
			}
			
			SCHEDULE_MAP.put(scheduleId, scheduler);
		}

		return scheduler;
	}
	
	public static Scheduler removeScheduler(Scheduler scheduler) {
		String scheduleId = scheduler.getScheduleId();
		synchronized (SCHEDULE_MAP) {
			return SCHEDULE_MAP.remove(scheduleId);
		}
	}
	
	public static void display(){
		String str = "CURRENT SCHEDULE:\n";
		for(Scheduler scheduler : SCHEDULE_MAP.values()){
			str += scheduler.toString() + "\n";
		}		
		logger.info(str);
	}
}