/**
* Create one or more indexes for the collection.
*
* Each element in the $indexes array must have a "key" document, which
* contains fields mapped to an order or type. Other options may follow.
* For example:
*
* $indexes = [
* // Create a unique index on the "username" field
* [ 'key' => [ 'username' => 1 ], 'unique' => true ],
* // Create a 2dsphere index on the "loc" field with a custom name
* [ 'key' => [ 'loc' => '2dsphere' ], 'name' => 'geo' ],
* ];
*
* If the "name" option is unspecified, a name will be generated from the
* "key" document.
*
* @see http://docs.mongodb.org/manual/reference/command/createIndexes/
* @see http://docs.mongodb.org/manual/reference/method/db.collection.createIndex/
*
* @param array[] $indexes List of index specifications
*
* @return string[] The names of the created indexes
* @throws InvalidArgumentException if an index specification is invalid
*/
public function createIndexes(array $indexes)
{
$operation = new CreateIndexes($this->databaseName, $this->collectionName, $indexes);
$server = $this->manager->selectServer(new ReadPreference(ReadPreference::RP_PRIMARY));
return $operation->execute($server);
}
