/**
* Return a QueryTerm object from the list.
*
* @param QueryTerm|string $query_term QueryTerm object or term string.
* @return QueryTerm|null Matching QueryTerm object, or null if none found.
*/
public function getQueryTerm($query_term)
{
if (is_string($query_term)) {
$query_term = QueryTerm::fromString($query_term, $this->_user_sph_map);
}
if ($query_term instanceof QueryTerm) {
$hash = $query_term->toHash();
if (isset($this->_qts[$hash])) {
return $this->_qts[$hash];
}
}
return null;
}
