/**
* Fetch an object from the datastore by key. Optionally indicate transaction.
* @param $key
* @param $txn
*/
private static function fetch_by_key($key, $txn = null)
{
$lookup_req = new Google_Service_Datastore_LookupRequest();
$lookup_req->setKeys([$key]);
if ($txn) {
// syslog(LOG_DEBUG, "fetching in transactional context $txn");
$ros = new Google_Service_Datastore_ReadOptions();
$ros->setTransaction($txn);
$lookup_req->setReadOptions($ros);
}
$response = DatastoreService::getInstance()->lookup($lookup_req);
$found = $response->getFound();
$extracted = static::extractQueryResults($found);
return $extracted;
}
/**
* @param Google_Service_Datastore_Key|Google_Service_Datastore_Key[] $key_or_keys
* @param \Google_Service_Datastore_ReadOptions|ReadOptions\Builder $readOptions
* @param array $options
* @return Lookup\Results
*/
public function lookup($key_or_keys, $readOptions = null, $options = [])
{
if (!is_string($key_or_keys)) {
$key_or_keys = [$key_or_keys];
}
$request = new Google_Service_Datastore_LookupRequest();
$request->setKeys($key_or_keys);
if ($readOptions !== null) {
if ($readOptions instanceof ReadOptions\Builder) {
$readOptions = $readOptions->build();
}
$request->setReadOptions($readOptions->build());
}
$response = $this->datastoreService->datasets->lookup($this->datasetId, $request, $options);
return new Lookup\Results($response);
}
