new

  protected function set_posts_query($query = false) {
    global $json_api, $wp_query;

    if (!$query) {
      $query = array();
    }

    $query = array_merge($query, $wp_query->query);

    if ($json_api->query->page) {
      $query['paged'] = $json_api->query->page;
    }

    if ($json_api->query->count) {
      $query['posts_per_page'] = $json_api->query->count;
    }

    if ($json_api->query->showposts) {
      $query['showposts'] = $json_api->query->showposts;
    }

    if ($json_api->query->post_type) {
      $query['post_type'] = $json_api->query->post_type;
    }

    if (!empty($query)) {
      wp_reset_query();
      query_posts($query);
    }
  }

}