CODEWITHSUNDEEP
grailsquartz-scheduler
rjvargh
rjvargh

Reputation: 51

Service not injecting properly into quartz job class With quartz scheduler plugin (v1.0.1) for grails 2.3.6

I've implemented my own quartz job classes that take in a service method . However, the service doesn't seem to be injecting properly into my job class as i always get a nullpointer exception when accessing a service.

How do i get the services to be injected during the trigger of the job .

Any suggestion on how to invoke the method in the service from the Job class

Update 1 : Added the job code and log messages

import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.quartz.JobDataMap;

import com.unitrac.app.reportcentre.report.ReportService;

// Logging
import org.apache.commons.logging.LogFactory;


class ReportJob  implements Job {
    
    
    def reportService;               
    def grailsApplication;
    
    
    // Logging
    private static final log = LogFactory.getLog(this);
           

    void execute(JobExecutionContext context) throws JobExecutionException {
        // execute job
      
      
      JobDataMap jobMapData = context.getMergedJobDataMap();          
          
        
      try
        { 
          log.debug("In Report Job  - executing its JOB at "
              + new Date() + " by " + context.getTrigger().getName());
        
         
        
        String groupName =  context.getTrigger().getJobKey().getName();             
        
        log.debug("group Name  : "  + groupName);
               
        reportService.invokeMethod();
          
        }
      
      catch( Exception e )
      {
          log.error("Exception: $e");
      }     
        
    }
}

| |

Server running. Browse to http://localhost:8080/ReportCentre
2014-04-22 14:50:00,087 [UnitracJobScheduler_Worker-1] DEBUG reportcentre.ReportJob - In Report Job  - executing its JOB at Tue Apr 22 14:50:00 CAT 2014 by CCtrigger
2014-04-22 14:50:00,104 [UnitracJobScheduler_Worker-1] DEBUG reportcentre.ReportJob - group Name  : DevGroup
2014-04-22 14:50:00,106 [UnitracJobScheduler_Worker-1] ERROR reportcentre.ReportJob - Exception: java.lang.NullPointerException: Cannot invoke method invokeMethod() on null object

Upvotes: 4

Views: 2101

Answers (4)

greenkode
greenkode

Reputation: 3996

For what it's worth. I tried all the suggestions above, and it' didn't work for me. I eventually settled for Injecting the service manually from the Grails ApplicationContext.

def ss = Holders.grailsApplication.mainContext.getBean(SampleService.class)

This is better than creating a service using new()

Upvotes: 3

durp
durp

Reputation: 198

You actually don't need to remove "implements Job". Ran into the same sort of problem...

I am guessing that you are creating the job with JobBuilder.newJob(...)

Using newJob breaks the injection (it is bypassing standard object creation patterns). You can, usually, just put the things that you were loading into JobDetail into the trigger.

Then use: ReportJob.schedule(trigger)

Doesn't even need an instance to work. All injection is happy. Yay, Reports!

Upvotes: 1

Christopher Nolan Buckley
Christopher Nolan Buckley

Reputation: 21

I added @Autowired() annotation to the fields I need wired in and this worked for me.

Upvotes: 0

Dónal
Dónal

Reputation: 187529

Make sure your job class in in grails-app/jobs and try removing implements Job.

Upvotes: 1

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