You are wrong. As the java doc reads: 'Finds the top n hits for query' You can set n to whatever value you want, 'all' documents (not results!) indexed in your index if you want, or 10 if you want the top 10.
Anyway, it's just an example to give a direction.. Wouter > This code snipplet would only work, if you want to iterate over e.g. the > first 20 documents (which is n in your code). If he wants to iterate over > all results, he should think about using a custom (Hit)Collector. > > The code below will be very slow for large result sets (because retrieving > stored fields is not effective for a large number of documents, look into > the warning about the "inner search loop" in Wiki). To just retrieve e.g. > a > Filename, it may really be better to use a FieldCache on the "FILE" field > and inside the HitCollector, use the doc number to get the filename from > the > cache. I think the speed improve will be >>10 times as fast! > > ----- > Uwe Schindler > H.-H.-Meier-Allee 63, D-28213 Bremen > http://www.thetaphi.de > eMail: u...@thetaphi.de > >> -----Original Message----- >> From: Wouter Heijke [mailto:whei...@xs4all.nl] >> Sent: Wednesday, June 10, 2009 11:44 AM >> To: java-user@lucene.apache.org >> Subject: Re: Migrating from Hit/Hits to TopDocs/TopDocCollector >> >> >> Will this do? >> >> IndexReader indexReader = searcher.getIndexReader(); >> TopDocs topDocs = searcher.search(Query query, int n); >> for (int i = 0; i < topDocs.scoreDocs.length; i++) { >> Document document = indexReader.document( topDocs.scoreDocs[i].doc); >> final File f = new File( document.get( "FILE" ) ); >> } >> >> >> > I have existing code that's like: >> > >> > final Term t = /* ... */; >> > final Iterator i = searcher.search( new >> > TermQuery( t ) ).iterator(); >> > while ( i.hasNext() ) { >> > final Hit hit = (Hit)i.next(); >> > // "FILE" is the field that recorded the original file indexed >> > final File f = new File( hit.get( "FILE" ) ); >> > // ... >> > } >> > >> > It's not clear to me how to rewrite the code using TopDocs/ >> > TopDocCollector and how to iterate over the results. >> > >> > A little help? Thanks. :-) >> > >> > - Paul >> > >> --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
