Creating a custom scheduler using spring quartz

Question

I have a requirement to create a custom scheduler. I would like all the parameters defining the frequency that my jobs will run to be stored in db tables. This would allow my customers to change the frequency etc via a nice little webapp (webapp is a different application to my main one).

I know using quartz you can define all your job triggers programatically but is that just at start time? How would it work if my customer logs on a changes the schedule in the webapp. Am I able to re-define a job trigger in the original app by checking for changes periodially?

Does anyone know of any nice examples of this?

regards

Answer 1

You have bunch of methods in Scheduler interface. JavaDoc here.

Replace already scheduled job with :

• Add a new job with replace=true in addJob method

  OR

  1. Deleting an existing job ( method: deletejob )

  2. And then adding a new job with modified details ( addjob)

Replace already scheduled triggers with

• rescheduleJob ( If jobdetail associated with previous trigger is same for new trigger too )

  OR

• unscheduleJob followed by scheduleJob