You could possibly tokenize the value both forwards and in reverse, for example:
123456 and 654321 You can then convert a query for *56 to 65* and this will increase performance. -----Original Message----- From: G.Long [mailto:jde...@gmail.com] Sent: 13 February 2012 16:39 To: java-user@lucene.apache.org Subject: query performance with leading * Hi, Is there a way to improve query performance when using a leading * as a wildcard on a path property? I have hundreds of queries to run on a lucene index (~250mo). Executing those queries without the leading * is about 5x faster than with the leading *. My problem is that I sometimes need to use the leading *. Most of the queries have the full path as parameter but some of them have only a part of it. The queries look like: "+projet:CCOM +path:*/folder5/folder6/folder_ab/ I'm using lucene 3.1.0 Regards, Gary --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org Please consider the environment before printing this email. This message should be regarded as confidential. If you have received this email in error please notify the sender and destroy it immediately. Statements of intent shall only become binding when confirmed in hard copy by an authorised signatory. The contents of this email may relate to dealings with other companies under the control of BAE Systems plc details of which can be found at http://www.baesystems.com/Businesses/index.htm. Detica Limited is a BAE Systems company trading as BAE Systems Detica. Detica Limited is registered in England and Wales under No: 1337451. Registered office: Surrey Research Park, Guildford, Surrey, GU2 7YP, England. --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
