@Override
public Query rewrite(IndexReader reader) throws IOException {
Query rewritten = super.rewrite(reader);
if (rewritten != this) {
return rewritten;
}
if (termArrays.isEmpty()) {
return new MatchNoDocsQuery();
}
MultiPhraseQuery.Builder query = new MultiPhraseQuery.Builder();
query.setSlop(slop);
int sizeMinus1 = termArrays.size() - 1;
for (int i = 0; i < sizeMinus1; i++) {
query.add(termArrays.get(i), positions.get(i));
}
Term[] suffixTerms = termArrays.get(sizeMinus1);
int position = positions.get(sizeMinus1);
ObjectHashSet<Term> terms = new ObjectHashSet<>();
for (Term term : suffixTerms) {
getPrefixTerms(terms, term, reader);
if (terms.size() > maxExpansions) {
break;
}
}
if (terms.isEmpty()) {
return Queries.newMatchNoDocsQuery();
}
query.add(terms.toArray(Term.class), position);
return query.build();
}
