Quartz TriggerBuilder Sınıfı

Giriş
Şu satırı dahil ederiz.

import org.quartz.SimpleScheduleBuilder;
import org.quartz.Trigger;
import org.quartz.TriggerBuilder;

Trigger yaratır. Trigger işin ne zaman koşacağını bilir. Açıklaması şöyle

Trigger contains scheduling condition(ex. number of iterations, start time) to execute the job, and the scheduler performs the job based on this information.

The Relationship Between Trigger and Job
Trigger (1) : Job(1)
One Trigger must be designated as one Job
Trigger (N) : Job(1)
One Job can be run multiple times at different times
Trigger (1) : Job(N) (X)
One Trigger cannot have more then One Job

withSchedule metodu

Örnek - single shot SimpleSchedule

Şöyle yaparız

Trigger buildJobTrigger(JobDetail jobDetail, ZonedDateTime startAt) {
  return TriggerBuilder.newTrigger().forJob(jobDetail)
    .withIdentity(jobDetail.getKey().getName(), "email-triggers")
    .withDescription("Send Email Trigger")
    .startAt(Date.from(startAt.toInstant()))
    .withSchedule(SimpleScheduleBuilder.simpleSchedule()
                                       .withMisfireHandlingInstructionFireNow())
    .build();
}

Örnek - periodic SimpleSchedule
Şöyle yaparız.

Trigger trigger = TriggerBuilder
  .newTrigger()
  .withIdentity("myTriggerName", "myGroup")
  .withSchedule(
    SimpleScheduleBuilder.simpleSchedule().withIntervalInSeconds(1).repeatForever())  )
  .build();

Örnek - CronSchedule
Şöyle yaparız.

Trigger trigger = TriggerBuilder.newTrigger()
  .withIdentity("cronTrigger", "group1")
  .withSchedule(CronScheduleBuilder.cronSchedule("0/10 * * * * ?"))
  .build();

Örnek - CronSchedule

Şöyle yaparız

import org.quartz.CronScheduleBuilder;
import org.quartz.ScheduleBuilder;
import org.quartz.Trigger;
import org.quartz.TriggerBuilder;

String cronExpression = ...;

ScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(cronExpression);
Trigger trigger = TriggerBuilder.newTrigger()
  .withIdentity("databasetrigger", "databasegroup")
  .startNow()
  .withSchedule(scheduleBuilder)
  .build();