// same IndexPattern.
//
// To make sure that all potentially matching documents are returned
// by the search, all subqueries with these operators are ignored
// on this step.
org.apache.lucene.search.Query parsedQuery = new SpecialQueryParser(alias, analyzer).parse(query);
IndexMatch[] matches = textInd.queryMatches(parsedQuery);
Key[] keys = QueryEngine.getUniqueKeys(matches);
return new NamedKeys(ps, ps.indexOf('@') != -1, keys);
}