Phalcon\Db\Adapter\MongoDB\Model\IndexInfo::isSparse PHP 메소드

Return whether this is a sparse index.

또한 보기: http://docs.mongodb.org/manual/core/index-sparse/

public isSparse ( ) : boolean
리턴	boolean

    public function isSparse()
    {
        return !empty($this->info['sparse']);
    }

IndexInfo