/**
* Comparison function for query terms. Field names are compared first,
* then field terms are compared case insensitively.
*
* @param QueryTerm $a Query term A.
* @param QueryTerm $b Query term B.
* @return integer 1, -1 or 0 depending on comparison result.
*/
public static function cmp(QueryTerm $a, QueryTerm $b)
{
if ($a->getUserField() > $b->getUserField()) {
return 1;
}
if ($a->getUserField() < $b->getUserField()) {
return -1;
}
if (strtolower($a->getTerm()) > strtolower($b->getTerm())) {
return 1;
}
if (strtolower($a->getTerm()) < strtolower($b->getTerm())) {
return -1;
}
return 0;
}
/**
* 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;
}
