Thanks shai and mark for your suggestions. I initially tried DuplicateFilter and it is not giving me expected results. It removes the duplicates at query time and not in the results.
Regards Ganesh ----- Original Message ----- From: "mark harwood" <markharw...@yahoo.co.uk> To: <java-user@lucene.apache.org> Sent: Wednesday, September 02, 2009 5:36 PM Subject: Re: First result in the group See "DuplicateFilter" in contrib. http://markmail.org/message/lsvnpu7mwhht3a4p Cheers Mark ----- Original Message ---- From: Ganesh <emailg...@yahoo.co.in> To: java-user@lucene.apache.org Sent: Wednesday, 2 September, 2009 12:38:35 Subject: Re: First result in the group I have a field called category and all documents will have belong to some category( say some belong to X and some Y etc). The field values may change dynamically. I want the search results to be filterted to retrieve one document per category. This is similar to 'group by' feature in database. Regards Ganesh ----- Original Message ----- From: "Shai Erera" <ser...@gmail.com> To: <java-user@lucene.apache.org> Sent: Wednesday, September 02, 2009 4:33 PM Subject: Re: First result in the group > What do you mean by "first result in the group"? What is a group? > > On Wed, Sep 2, 2009 at 1:36 PM, Ganesh <emailg...@yahoo.co.in> wrote: > >> Hello all, >> >> I want to retrieve the first result in the group. How to acheive this? >> Currently i am parsing all the results, using a hash and avoiding duplicate >> entries. >> >> Is there any better way? >> >> Regards >> Ganesh >> Send instant messages to your online friends http://in.messenger.yahoo.com >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >> For additional commands, e-mail: java-user-h...@lucene.apache.org >> >> > Send instant messages to your online friends http://in.messenger.yahoo.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 Send instant messages to your online friends http://in.messenger.yahoo.com --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
