Lucene pagination with TopScoreDocCollector

Question

I have a code like this with Lucene. Can someone provide a sample or tips about how to make the pagination with Lucene?

    Query q = queryParser.parse(useQuery);
TopScoreDocCollector collector = TopScoreDocCollector.create(maxReturn, true);
searcher.search(q, collector);

Thanks.

Answer 1

You can get the TopDocs representing a particular page of results, using TopDocsCollector.topDocs(int). Remember that the start argument represents how many documents in it should start, not how many "pages", so something like:

TopDocs hits = collector.topDocs(maxReturn*page);

Is usually appropriate (where page is numbered from 0)