Include file meta

Hi,

Is it possible to include file meta in search. Like description (post_content), legend (post_excerpt) and alt (postmeta).

I think about something like this maybe (description / legend):

private function getFileConditions($words)
{
      $words = !$this->config['whole_phrases'] ? explode(' ', $words) : [$words];
      $list  = [];

      foreach ($words as $word) {
        $word   = addslashes($word);
        $temp = [];
        $temp[] = 'd.post_title LIKE \'%' . $word . '%\'';
        $temp[] = 'd.post_content LIKE \'%' . $word . '%\'';

        $list[] = '(' . implode(') OR (', $temp) . ')';
      }

      $list = '(' . implode(') AND (', $list) . ')';
      return $list;
    }

Thanks in advance