/**
* 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;
}
