Stop cron job via quartz plugin 0.4.2 in grails 1.3.7 - grails

Question

I have grails 1.3.7 and quartz plugin 0.4.2 for cron jobs.
class MyJob {
static triggers = {}
void execute() {
//some doings.
}
}
Somewhere in my code I have dynamic scheduling of my job like that:
MyJob.schedule(cronExpression)
Every time I schedule new cron job it creates new one and it works together with previously created jobs. But I want to replace old cron jobs of MyJob with new one each time.
Maybe I was wrong in my understanding but I tried to add
def concurrent = false
It didn't help.
Is there any way to stop all jobs of some job class?
Thank you!
UPD: As I understand there is no such thing as InterruptableJob in this version of quartz plugin. Am I right?

Answer 1

Finally I've found way how to unschedule job and schedule another one.
First I've added a group for job:
class MyJob {
def group = 'jobGroupName'
static triggers = {}
void execute() {
// some stuff
}
}
Also I've found JobManagerService inside plugin with very useful methods. But I was looking into source codes to get how it works correctly. After some time my solutions become in next code (maybe it's raw yet, but it works):
class MyService {
def jobManagerService
def rescheduleJob() {
def job = jobManagerService.getJob('jobGroupName').first()
Scheduler scheduler = jobManagerService.quartzScheduler
Trigger trigger = scheduler.getTriggersOfJob(job, 'jobGroupName').first()
if (!jobManagerService.unscheduleJob(trigger.group, trigger.name)) {
log.warn('Failed during unscheduling job')
} else {
MyJob.schedule(newCronExpression)
}
}
}
It's not clear sometimes which name and group required in service methods. So debug and sources helped me with this.