quartz源码分析

Package quartz-core

org.quartz.QuartzScheduler.java

类 QuartzScheduler

方法:

1. 构造函数

public QuartzScheduler(QuartzSchedulerResources resources, long idleWaitTime, @Deprecated long dbRetryInterval)

schedThreadExecutor.execute(this.schedThread);

addInternalJobListener(jobMgr);

2. initialize()

bind();把scheduler绑定到一个RMI registry

registerJMX();把scheduler绑定到JMSServer

3. start()

所有未被触发的trigger会传给一个triggerlistener

notifySchedulerListenersStarting();

notifySchedulerListenersStarted();

4. startDelayed()

public void startDelayed(final int seconds) throws SchedulerException{    if (shuttingDown || closed) {        throw new SchedulerException(                "The Scheduler cannot be restarted after shutdown() has been called.");    }    Thread t = new Thread(new Runnable() {        public void run() {            try { Thread.sleep(seconds * 1000L); }            catch(InterruptedException ignore) {}            try { start(); }            catch(SchedulerException se) {                getLog().error("Unable to start secheduler after startup delay.", se);            }        }    });    t.start();}

5. standby()

暂停

resources.getJobStore().schedulerPaused();schedThread.togglePause(true);getLog().info(        "Scheduler " + resources.getUniqueIdentifier() + " paused.");notifySchedulerListenersInStandbyMode();        

其中，

public boolean isInStandbyMode() {    return schedThread.isPaused();}

6. shundown()

public void shutdown(boolean waitForJobsToComplete) {

standby();schedThread.halt(waitForJobsToComplete);notifySchedulerListenersShuttingdown();

resources.getThreadPool().shutdown(waitForJobsToComplete);

7. scheduleJob()

把job加到scheduler中，并关联相应的trigger。

public Date scheduleJob(JobDetail jobDetail,        Trigger trigger) throws SchedulerException 

OperableTrigger trig = (OperableTrigger)trigger;if (trigger.getJobKey() == null) {    trig.setJobKey(jobDetail.getKey());} else if (!trigger.getJobKey().equals(jobDetail.getKey())) {    throw new SchedulerException(        "Trigger does not reference given job!");}trig.validate();

resources.getJobStore().storeJobAndTrigger(jobDetail, trig);notifySchedulerListenersJobAdded(jobDetail);notifySchedulerThread(trigger.getNextFireTime().getTime());notifySchedulerListenersSchduled(trigger);