/**
  * Generate jobs for config information
  *
  * @param Aoe_Scheduler_Model_Job $job
  *
  * @return $this
  */
 public function generateSchedulesForJob(Aoe_Scheduler_Model_Job $job)
 {
     if (!$job->canBeScheduled()) {
         return $this;
     }
     $exists = array();
     foreach ($this->getPendingSchedules(array($job->getJobCode()), array()) as $schedule) {
         /* @var Aoe_Scheduler_Model_Schedule $schedule */
         $exists[$schedule->getJobCode() . '/' . $schedule->getScheduledAt()] = 1;
     }
     $now = time();
     $scheduleAheadFor = Mage::getStoreConfig(Mage_Cron_Model_Observer::XML_PATH_SCHEDULE_AHEAD_FOR) * 60;
     $timeAhead = $now + $scheduleAheadFor;
     $schedule = Mage::getModel('cron/schedule');
     /* @var $schedule Aoe_Scheduler_Model_Schedule */
     $schedule->initializeFromJob($job);
     $schedule->setScheduledReason(Aoe_Scheduler_Model_Schedule::REASON_GENERATESCHEDULES);
     for ($time = $now; $time < $timeAhead; $time += 60) {
         $ts = strftime('%Y-%m-%d %H:%M:00', $time);
         if (!empty($exists[$job->getJobCode() . '/' . $ts])) {
             // already scheduled
             continue;
         }
         if (!$schedule->trySchedule($time)) {
             // time does not match cron expression
             continue;
         }
         $schedule->unsScheduleId()->save();
     }
     return $this;
 }