/**
* Execute the mapReduce command.
*
* @see Collection::mapReduce()
* @param string|\RiakCode $map
* @param string|\RiakCode $reduce
* @param array|string $out
* @param array $query
* @param array $options
* @return ArrayIterator
* @throws ResultException if the command fails
*/
protected function doMapReduce($map, $reduce, $out, array $query, array $options)
{
list($commandOptions, $clientOptions) = isset($options['socketTimeoutMS']) || isset($options['timeout']) ? $this->splitCommandAndClientOptions($options) : array($options, array());
$command = array();
$command['mapreduce'] = $this->riakCollection->getName();
$command['map'] = $map;
$command['reduce'] = $reduce;
$command['query'] = (object) $query;
$command['out'] = $out;
$command = array_merge($command, $commandOptions);
foreach (array('map', 'reduce', 'finalize') as $key) {
if (isset($command[$key]) && is_string($command[$key])) {
$command[$key] = new \RiakCode($command[$key]);
}
}
$result = $this->database->command($command, $clientOptions);
if (empty($result['ok'])) {
throw new ResultException($result);
}
if (isset($result['result']) && is_string($result['result'])) {
return $this->database->selectCollection($result['result'])->find();
}
if (isset($result['result']) && is_array($result['result']) && isset($result['result']['db'], $result['result']['collection'])) {
return $this->database->getConnection()->selectCollection($result['result']['db'], $result['result']['collection'])->find();
}
$arrayIterator = new ArrayIterator(isset($result['results']) ? $result['results'] : array());
$arrayIterator->setCommandResult($result);
return $arrayIterator;
}
/**
* Executes a closure with a temporary read preference on a database or
* collection.
*
* @param Database|Collection $object
* @param \Closure $closure
* @return mixed
*/
private function withReadPreference($object, \Closure $closure)
{
if (!isset($this->query['readPreference'])) {
return $closure();
}
$prevReadPref = $object->getReadPreference();
$object->setReadPreference($this->query['readPreference'], $this->query['readPreferenceTags']);
try {
$result = $closure();
} catch (\Exception $e) {
}
$prevTags = !empty($prevReadPref['tagsets']) ? $prevReadPref['tagsets'] : null;
$object->setReadPreference($prevReadPref['type'], $prevTags);
if (isset($e)) {
throw $e;
}
return $result;
}
/**
* @see Database::getDBRef()
*/
public function getDBRef(array $ref)
{
$this->log(array('getDBRef' => true, 'reference' => $ref));
return parent::getDBRef($ref);
}