Hello Luan, I think you are looking for facets and faceted search. In short, it means storing the category for a document (web page) in the Document Field in Lucene index . Then, at search time, you count how many matches were in which category. You can implement this yourself or you can use Solr, which has this functionality built-in. If you want to stick with Lucene and don't want Solr, you can use Bobo Browse with Lucene - Lucene in Action 2 has a case study about Bobo Browse, where you can learn how this is done. Slick stuff.
Thanks for using http://search-lucene.com :) Otis ---- Sematext :: http://sematext.com/ :: Solr - Lucene - Nutch Lucene ecosystem search :: http://search-lucene.com/ ----- Original Message ---- > From: Luan Cestari <luan.cest...@gmail.com> > To: java-user@lucene.apache.org > Sent: Sun, August 8, 2010 7:16:05 PM > Subject: Using categories with Lucene > > > Lucene developers, > > We’ve been working on a undergraduate project to the college about changing > Apache Nutch (that uses Lucene do index it’s web pages) to include a > category filter, and we are having problems about the query part. We want to > develop an application with a good performance, so we thought that here > would be the best place to ask this kind of question. The idea is that the > user can search pages stored for only a category. So the number of results > found should display the number of pages that actually is classified in that > category. > > The problem is about how to add to the Lucene indexes the category > information, and how filter the search on that. We tried to look on the > Nutch mailing-list (Nabble) about that and asked some help, but people from > there think that we should use some plug-in like Carrot, that get like 100 > of pages and classify it in the query time. We are not very confident that > it’s the best solution. We thought in other two different ideas: #1 To > classify those pages and store that information on a DB and in the query > time filter the result that DB to filter the result. #2 Use different index > servers, one for each category and one to search without filtering by > category. > > We have seen on this project http://search-lucene.com/ that there are > pre-defined categories. We think that this should be classified at indexing > time, as we wanted. > > Do you have any other idea about how to do that? > > Sincerely, > > Daniel Costa Gimenes & Luan Cestari > Undergraduate students of University Center of FEI > Brazil > -- > View this message in context: >http://lucene.472066.n3.nabble.com/Using-categories-with-Lucene-tp1049232p1049232.html > > Sent from the Lucene - Java Users mailing list archive at Nabble.com. > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
