/**
* Re-write query into primitive queries in the context of specified index
*
* @param \Zend\Search\Lucene\SearchIndex $index
* @return \Zend\Search\Lucene\Search\Query\AbstractQuery
*/
public function rewrite(Lucene\SearchIndex $index)
{
if (count($this->_terms) == 0) {
return new EmptyResult();
}
// Check, that all fields are qualified
$allQualified = true;
foreach ($this->_terms as $term) {
if ($term->field === null) {
$allQualified = false;
break;
}
}
if ($allQualified) {
return $this;
} else {
/** transform multiterm query to boolean and apply rewrite() method to subqueries. */
$query = new Boolean();
$query->setBoost($this->getBoost());
foreach ($this->_terms as $termId => $term) {
$subquery = new Term($term);
$query->addSubquery($subquery->rewrite($index), $this->_signs === null ? true : $this->_signs[$termId]);
}
return $query;
}
}
