/**
* @return ArrayIterator
* @throws \Exception|\MongoException
* @throws \RuntimeException
*/
public function aggregate()
{
$database = $this->collection->getDatabase();
$command = array();
$command['aggregate'] = $this->collection->getName();
$command['pipeline'] = $this->getPipeline();
try {
$result = $database->command($command);
} catch (\MongoException $e) {
throw $e;
}
if (!$result['ok']) {
throw new \RuntimeException($result['errmsg']);
}
return new ArrayIterator(isset($result['result']) ? $result['result'] : array());
}
/**
* Normalize products into their MongoDB document representation
*
* @param ProductInterface[] $products
*
* @return array
*/
protected function getDocsFromProducts(array $products)
{
$context = [ProductNormalizer::MONGO_COLLECTION_NAME => $this->collection->getName()];
$docs = [];
foreach ($products as $product) {
$docs[] = $this->normalizer->normalize($product, ProductNormalizer::FORMAT, $context);
}
return $docs;
}
/**
* @return array
*
* @throws \Exception
*/
protected function getCollectionStats()
{
$database = $this->collection->getDatabase();
$name = $this->collection->getName();
try {
if (!($data = $database->command(array('collStats' => $name)))) {
$message = sprintf("Statistics not found for collection %s", $name);
throw new Exception($message);
}
if (isset($data['errmsg'])) {
throw new Exception($data['errmsg']);
}
return $data;
} catch (Exception $e) {
throw $e;
}
return array();
}