How to simulate 'No. of occurrences' or 'Repeat Count' with CronTriggers in Java?

Question

I am using the Quartz Scheduler (version 1.8.3 due to project constraints) and I as assigned the task of creating an \"MS Outlook-like\" scheduler for Jobs specific to my pr

Answer 1

Wy dont't you instead use the Simple Trigger? You would have the additional taks of calculating the time interval at the time of scheduling the job, but that will be a one time activity.

Answer 2

It seems that Quartz have implemented something that can help: TriggerUtils.computeEndTimeToAllowParticularNumberOfFirings.

I haven't tested it yet, but this is the code I have wrote for now:

CronTrigger trigger = newTrigger()
    .withSchedule(cronSchedule(cronExpression))
    .build();
Date endDate = TriggerUtils.computeEndTimeToAllowParticularNumberOfFirings((OperableTrigger) trigger,
              new BaseCalendar(Calendar.getInstance().getTimeZone()), 10);
trigger = trigger.getTriggerBuilder().endAt(endDate).build();

If this won't work, then as said here and here, you can't set a repeat count, and you should use TriggerListener.

In any case, version 2.2 doesn't have this feature.

Update

I've tested it, and it works.