jobDataMap to pass parameters for Multiple Triggers in Quartz - groovy

Question

Hi my code works with multiple triggers and i am trying to pass specific parameters associated with
each trigger using jobDataMap.But when i am trying to assign the map in my config.groovy to
jobDataMap i get a nullpointerexception
**This is the Map in my Config.groovy-->**
Query
{
Map
{
time.'0/5 * * * * ?' = ['T1']
time.'0/10 * * * * ?' = ['T2']
templates.'T1' = ['Date','FinshDate','Location']
templates.'T2' = ['TableName']
parameterValues.'T1' = ['2014071600','2014072000','Path']
parameterValues.'T2' = ['AppleData']
}
}
**This is my Quartz Job Code for multiple triggers ->**
import org.quartz.*
import org.quartz.Trigger
import static org.quartz.JobBuilder.*;
import static org.quartz.CronScheduleBuilder.*;
import static org.quartz.TriggerBuilder.*;
import org.quartz.impl.StdSchedulerFactory;
import org.codehaus.groovy.grails.commons.GrailsApplication;
public class TrialJob
{
public static void main(String[] args)
{
String JobName
String GroupName
GrailsApplication grailsApplication;
Trigger trigger
def triggerList=[]
def jobList=[]
def cronList=["0/5 * * * * ?","0/10 * * * * ?","0/15 * * * * ?"]
// here i am creating 3 triggers which works fine
for(i in 0..2)
{
JobName="trigger"+Integer.toString(i)
GroupName = "Group"+Integer.toString(i)
println cronList[i]
JobDetail job = JobBuilder.newJob(TestJob.class).withIdentity(JobName,GroupName).build();
trigger= TriggerBuilder.newTrigger().withIdentity(JobName,GroupName).withSchedule(CronScheduleBuilder.cronSchedule(cronList[i])).build();
triggerList.add(trigger)
jobList.add(job)
}
Scheduler scheduler = new StdSchedulerFactory().getScheduler();
scheduler.start();
for(j in 0..2)
{
// here i want to put the associated parameters for each trigger in the trigger list
// For Example 1) trigger 0--> triggerList[0].jobDataMap.put(['Date','FinshDate','Location'],['2014071600','2014072000','Path'])
// 2) trigger 1--> triggerList[1].jobDataMap.put(['TableName'],['AppleData'])
scheduler.scheduleJob(jobList[j],triggerList[j]);
println "torpido"
println j
}
//while(true){};
}
public static class TestJob implements Job
{
public void execute(JobExecutionContext context) throws JobExecutionException
{
HashMap<String, String> parameter = new HashMap();
parameter=context.getMergedJobDataMap()
println "Inside Execute"
}
}
}
how do i use jobDataMap inside the above for loop (it would be more
clear by looking at the comments inside the for loop) and access them
inside the execute method ?

Answer 1

I'm not grails expert but it seems that grails quartz scheduler plugin should be used.
Below You can find working code:
#Grab(group='org.quartz-scheduler', module='quartz', version='2.2.1')
import org.quartz.*;
import org.quartz.impl.StdSchedulerFactory;
public class CronTriggerExample {
public static void main( String[] args ) throws Exception {
def cronExpressions = ['0/5 * * * * ?', '0/10 * * * * ?', '0/20 * * * * ?']
def triggers = cronExpressions.collect { cron ->
TriggerBuilder
.newTrigger()
.withIdentity("trigger-$cron", "trigger-$cron-group")
.withSchedule(CronScheduleBuilder.cronSchedule(cron))
.usingJobData(new JobDataMap(['cron': cron]))
.build()
}
Scheduler scheduler = new StdSchedulerFactory().getScheduler()
scheduler.start()
triggers.each { trigger ->
def job = JobBuilder.newJob(HelloJob).withIdentity("$trigger.key.name-job", "$trigger.key.name-job-group").build()
scheduler.scheduleJob(job, trigger)
}
while(true){}
}
}
public class HelloJob implements Job {
public void execute(JobExecutionContext context) throws JobExecutionException {
println "Hello Quartz with cron: ${context.mergedJobDataMap.getString('cron')}"
}
}
Job name, job group as well trigger name, trigger group must be unique. Other objects can be passed with JobDataMap. Is that clear now?