Author: Dries De Peuter (dries@nousefreak.be)
Inheritance: implements Cron\Resolver\ResolverInterface
 /**
  * @param  string                    $jobName
  * @param  bool                      $force
  * @return ArrayResolver
  * @throws \InvalidArgumentException
  */
 protected function getJobResolver($jobName, $force = false)
 {
     $dbJob = $this->queryJob($jobName);
     if (!$dbJob) {
         throw new \InvalidArgumentException('Unknown job.');
     }
     $finder = new PhpExecutableFinder();
     $phpExecutable = $finder->find();
     $rootDir = dirname($this->getContainer()->getParameter('kernel.root_dir'));
     $resolver = new ArrayResolver();
     if ($dbJob->getEnabled() || $force) {
         $job = new ShellJob();
         $job->setCommand($phpExecutable . ' app/console ' . $dbJob->getCommand(), $rootDir);
         $job->setSchedule(new CrontabSchedule($dbJob->getSchedule()));
         $job->raw = $dbJob;
         $resolver->addJob($job);
     }
     return $resolver;
 }