private void scheduleJob(final ScheduledJobDetail scheduledJobDetails) {
   if (!scheduledJobDetails.isActiveSchedular()) {
     scheduledJobDetails.updateNextRunTime(null);
     scheduledJobDetails.updateCurrentlyRunningStatus(false);
     return;
   }
   try {
     final JobDetail jobDetail = createJobDetail(scheduledJobDetails);
     final Trigger trigger = createTrigger(scheduledJobDetails, jobDetail);
     final Scheduler scheduler = getScheduler(scheduledJobDetails);
     scheduler.scheduleJob(jobDetail, trigger);
     scheduledJobDetails.updateJobKey(getJobKeyAsString(jobDetail.getKey()));
     scheduledJobDetails.updateNextRunTime(trigger.getNextFireTime());
     scheduledJobDetails.updateErrorLog(null);
   } catch (final Throwable throwable) {
     scheduledJobDetails.updateNextRunTime(null);
     final String stackTrace = getStackTraceAsString(throwable);
     scheduledJobDetails.updateErrorLog(stackTrace);
     logger.error("Could not schedule job: " + scheduledJobDetails.getJobName(), throwable);
   }
   scheduledJobDetails.updateCurrentlyRunningStatus(false);
 }
 @Override
 public void startScheduler() {
   final SchedulerDetail schedulerDetail =
       this.schedularWritePlatformService.retriveSchedulerDetail();
   if (schedulerDetail.isSuspended()) {
     schedulerDetail.updateSuspendedState(false);
     this.schedularWritePlatformService.updateSchedulerDetail(schedulerDetail);
     if (schedulerDetail.isExecuteInstructionForMisfiredJobs()) {
       final List<ScheduledJobDetail> scheduledJobDetails =
           this.schedularWritePlatformService.retrieveAllJobs();
       for (final ScheduledJobDetail jobDetail : scheduledJobDetails) {
         if (jobDetail.isTriggerMisfired()) {
           if (jobDetail.isActiveSchedular()) {
             executeJob(jobDetail, SchedulerServiceConstants.TRIGGER_TYPE_CRON);
           }
           final String schedulerName = getSchedulerName(jobDetail);
           final Scheduler scheduler = this.schedulers.get(schedulerName);
           if (scheduler != null) {
             final String key = jobDetail.getJobKey();
             final JobKey jobKey = constructJobKey(key);
             try {
               final List<? extends Trigger> triggers = scheduler.getTriggersOfJob(jobKey);
               for (final Trigger trigger : triggers) {
                 if (trigger.getNextFireTime() != null
                     && trigger.getNextFireTime().after(jobDetail.getNextRunTime())) {
                   jobDetail.updateNextRunTime(trigger.getNextFireTime());
                 }
               }
             } catch (final SchedulerException e) {
               logger.error(e.getMessage(), e);
             }
           }
           jobDetail.updateTriggerMisfired(false);
           this.schedularWritePlatformService.saveOrUpdate(jobDetail);
         }
       }
     }
   }
 }