I want to access matched terms before they go to TopDocs somehow during
search.
Maybe I should write a custom collector?
пн, 17 июл. 2023 г. в 20:54, nedyalko.zhe...@freelance.de.INVALID
<nedyalko.zhe...@freelance.de.invalid>:
> Hi Igor,
>
> I have similar situation and have written the following code:
>
> TopDocs topDocs = this.searcher.search(query, maxResults);
> Weight weight =
> query.rewrite(this.searcher.getIndexReader()).createWeight(this.searcher,
> ScoreMode.TOP_DOCS, 1.0f);
> for (ScoreDoc scoreDoc : topDocs.scoreDocs) {
> Matches matches =
> weight.matches(this.searcher.getIndexReader().leaves().get(0),
> scoreDoc.doc);
> MatchesIterator matchesIterator =
> matches.getMatches(FIELD_CONTENT_NAME);
> while(matchesIterator.next()) {
> Query matchedQuery = matchesIterator.getQuery();
> Set<Term> matchedTerms = this.extractMatchingTerms(matchedQuery);
> // do whatever needed with the terms that are matching
> }
> }
> protected Set<Term> extractMatchingTerms(Query query) throws IOException {
> Set<Term> queryTerms = new HashSet<>();
>
> this.searcher.rewrite(query).visit(QueryVisitor.termCollector(queryTerms));
> return queryTerms;
> }
>
> In topDocs you will have the matched documents. And in matchedTerms you
> will have the corresponding terms that are matching.
> I hope this helps you.
>
> Ned
> ________________________________
> Von: Igor Kustov <kustoffi...@gmail.com>
> Gesendet: Montag, 17. Juli 2023 19:12
> An: java-user@lucene.apache.org <java-user@lucene.apache.org>
> Betreff: Access child boolean query matched terms in parent custom wrapper
> query
>
> I'm writing custom lucene query which is basically a wrapper around boolean
> query with many should clauses.
>
> I want to access this boolean query's matched terms, and then either filter
> out this document depending on external statistics on those terms or
> proceed with this document without affecting it boolean score.
>
> What is the best way to achieve this?
>
