private function mediaObjectToArray(Media $media)
 {
     $mediaArray = null;
     if ($media->getId()) {
         if (!$this->advertisement) {
             $this->advertisement = new Advertisement();
             $this->advertisement->setInstitution($this->institution);
         }
         $mediaArray = array('id' => $media->getId(), 'uuid' => $media->getUuid(), 'name' => $media->getName(), 'caption' => $media->getCaption());
     }
     return $mediaArray;
 }
 private function updateAdvertisementDenormalizedData(Advertisement $advertisement)
 {
     $data['id'] = $advertisement->getId();
     $data['institution_id'] = $advertisement->getInstitution()->getId();
     $data['advertisement_type_id'] = $advertisement->getAdvertisementType()->getId();
     $data['title'] = $advertisement->getTitle();
     $data['description'] = $advertisement->getDescription();
     $data['date_created'] = $advertisement->getDateCreated() ? $advertisement->getDateCreated()->format('Y-m-d H:i:s') : 'now()';
     $data['date_expiry'] = $advertisement->getDateExpiry()->format('Y-m-d H:i:s');
     $data['status'] = $advertisement->getStatus();
     // TODO - Enhance Saving Process. This can be done in 1 foreach.
     $collectionClasses = array();
     foreach ($advertisement->getAdvertisementPropertyValues() as $each) {
         $property = $each->getAdvertisementPropertyName();
         if ($property->getDataType()->getColumnType() == 'collection') {
             $data[$property->getName()][] = (int) $each->getValue();
             $collectionClasses[$property->getName()] = $property->getDataClass();
         } else {
             $data[$property->getName()] = $each->getValue();
         }
     }
     $onDuplicatePlaceholder = $columns = $valuesPlaceholder = '';
     foreach ($data as $key => $value) {
         if (is_array($value)) {
             if (empty($value)) {
                 $data[$key] = '';
                 continue;
             }
             if (!$collectionClasses[$key]) {
                 throw AdvertisementPropertyException::emptyPropertyClass($key);
             }
             $qb = $this->em->createQueryBuilder();
             $query = $qb->select('a')->from($collectionClasses[$key], 'a')->where($qb->expr()->in('a.id', $value));
             $data[$key] = json_encode($query->getQuery()->getResult(Query::HYDRATE_ARRAY));
         }
         $columns .= ",{$key}";
         $valuesPlaceholder .= ",:{$key}";
         $onDuplicatePlaceholder .= ",{$key} = :{$key}";
     }
     $columns = substr($columns, 1);
     $valuesPlaceholder = substr($valuesPlaceholder, 1);
     $onDuplicatePlaceholder = substr($onDuplicatePlaceholder, 1);
     $query = "INSERT INTO advertisement_denormalized_properties ({$columns}) VALUES({$valuesPlaceholder}) ON DUPLICATE KEY UPDATE {$onDuplicatePlaceholder}";
     $result = $this->em->getConnection()->executeQuery($query, $data);
 }