/**
* Modify the query to navigate.
* Restrict the query selection to required fields.
* The navigator needs only a few fields from an entry; use {@link QUERY::
* set_select()} to reset the selection clause.
* @param QUERY $query
* @access private
*/
protected function _adjust_query($query)
{
$query->set_select('entry.id, entry.title, entry.state');
}
