/**
* Return a list of IDs for the given search criters
*
* @param string $criteria
* @param int $limit
* @param int $offset
* @return array
*/
public function get_by_criteria($criteria, $limit, $offset)
{
$qp = new XapianQueryParser();
$enquire = new XapianEnquire($this->_database);
if ($this->get_stem_locale()) {
// Note, there may be a problem if this is different than at indexing time!
$stemmer = new XapianStem($this->get_stem_locale());
$qp->set_stemmer($stemmer);
$qp->set_stemming_strategy(XapianQueryParser::STEM_SOME);
}
$qp->set_database($this->_database);
$query = $qp->parse_query($criteria, XapianQueryParser::FLAG_SPELLING_CORRECTION);
$enquire->set_query($query);
$this->_spelling = $qp->get_corrected_query_string();
$matches = $enquire->get_mset($offset, $limit);
// TODO: get count from $matches->get_matches_estimated() instead of current method
$i = $matches->begin();
$ids = array();
while (!$i->equals($matches->end())) {
$n = $i->get_rank() + 1;
$ids[] = $i->get_document()->get_value(self::XAPIAN_FIELD_ID);
$i->next();
}
return $ids;
}
