public function parseStudents($str)
 {
     $students = array();
     $manager = $this->getContainer()->get('doctrine.orm.entity_manager');
     $studentRepo = $manager->getRepository('TSK\\StudentBundle\\Entity\\Student');
     $studentStatusRepo = $manager->getRepository('TSK\\StudentBundle\\Entity\\StudentStatus');
     $activeStatus = $studentStatusRepo->findOneBy(array('name' => 'active'));
     $studentLegacyIds = preg_split('/;/', $str);
     foreach ($studentLegacyIds as $studentLegacyId) {
         $studentLegacyId = preg_replace('/-/', '', $studentLegacyId);
         $student = $studentRepo->findOneBy(array('legacyStudentId' => $studentLegacyId));
         if (!$student) {
             $student = new Student();
             $student->setLegacyStudentId($studentLegacyId);
             $contact = new Contact();
             $contact->setFirstName('dummy');
             $contact->setLastName('record');
             $contact->setOrganization($this->org);
             $student->setContact($contact);
             $student->setStudentStatus($activeStatus);
             $manager->persist($student);
             $manager->flush();
         }
         $students[] = $student;
     }
     return $students;
 }