/**
  * @param ObjectManager $manager
  * @param string $filename
  * @return integer Number of entries actually added.
  */
 protected function addEntries(ObjectManager $manager, $filename)
 {
     $repo = $this->getRepository($manager);
     $entriesAdded = 0;
     $currentBatchEntries = array();
     $fcontents = file($filename);
     for ($i = 0, $numLines = count($fcontents); $i < $numLines; ++$i) {
         $line = trim($fcontents[$i]);
         $arr = explode("\t", $line);
         // skip if no lat/lng values
         if (!array_key_exists(9, $arr) || !array_key_exists(10, $arr)) {
             continue;
         }
         $country = $arr[0];
         $postalCode = $arr[1];
         // skip duplicate entries in current batch
         if (in_array($country . '-' . $postalCode, $currentBatchEntries)) {
             continue;
         }
         // skip duplicate entries already persisted
         if ($repo->findOneBy(array('country' => $country, 'postalCode' => $postalCode)) !== null) {
             continue;
         }
         $entity = new GeoPostalCode();
         $entity->setCountry($country);
         $entity->setPostalCode($postalCode);
         $entity->setLat((double) $arr[9]);
         $entity->setLng((double) $arr[10]);
         $manager->persist($entity);
         ++$entriesAdded;
         $currentBatchEntries[] = $country . '-' . $postalCode;
         if (($i + 1) % $this->batchSize === 0) {
             $manager->flush();
             $manager->clear();
             $currentBatchEntries = array();
             echo '.';
             // progress indicator
         }
     }
     $manager->flush();
     // Flush for the last batch, which doesn't reach the batch size in most cases. (fixes #2)
     echo ' ', $entriesAdded, "\n";
     return $entriesAdded;
 }
 /**
  * Persists a number of {@code GeoPostalCode}s using dummy data.
  * @param integer $number
  */
 protected static function persistDummyGeoPostalCodes($number)
 {
     $em = static::getEntityManager();
     for ($i = 0; $i < $number; ++$i) {
         $entity = new GeoPostalCode();
         $entity->setCountry('DE');
         $entity->setPostalCode($i);
         $entity->setLat('52.' . $i);
         $entity->setLng('13.' . $i);
         $em->persist($entity);
     }
     $em->flush();
 }