/**
* 最快速写入模式,读取从集群，写入不等待返回错误
*
* @param string $collection
* @param string $database
* @param string $cluster
* @param string $collectionOptions
* @return \My\Common\MongoCollection
*/
public function qw($collection = null, $database = DEFAULT_DATABASE, $cluster = DEFAULT_CLUSTER, $collectionOptions = null)
{
if ($collection === null) {
throw new \Exception('请设定集合名称');
}
$mongoConfig = $this->getController()->getServiceLocator()->get('mongos');
$obj = new MongoCollection($mongoConfig, $collection, $database, $cluster, $collectionOptions);
$obj->setReadPreference(\MongoClient::RP_SECONDARY);
if (method_exists($obj, 'setWriteConcern')) {
$obj->setWriteConcern(0);
} else {
$obj->w = 0;
}
return $obj;
}
