Lucene Wildcard for zero or one character
Hello, does Lucene provide a zero or one character wildcard (like ? in Perl RegEx)? Example of what I mean: house% finds house and houses As far as I know in Lucene the ? wildcard is for exactly one character, but I need a zero or one character wildcard. Best regards, -- Sven Teichmann __ Software for Intellectual Property GmbH Gewerbering 14a 83607 Holzkirchen (Germany) Phone: +49 (0)8024 46699-00 Fax:+49 (0)8024 46699-02 E-Mail: s.teichm...@s4ip.de Local Court of Munich HRB 125803, UstId DE201282006 General Manager: Alexander Wagner __ - To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
RE: Lucene Wildcard for zero or one character
The default WildcardQuery only supports: '*' (star) is the wildcard in WildcardQuery for zero or more chars. '?' is exactly one char Zero or exatly one char can only be done with a RegexpQuery: https://lucene.apache.org/core/4_7_0/core/org/apache/lucene/search/RegexpQuery.html Here is the syntax: https://lucene.apache.org/core/4_7_0/core/org/apache/lucene/util/automaton/RegExp.html Query parser supports regex queries since 4.0 with / as delimiter: http://lucene.apache.org/core/4_7_0/queryparser/org/apache/lucene/queryparser/classic/package-summary.html#package_description Uwe - Uwe Schindler H.-H.-Meier-Allee 63, D-28213 Bremen http://www.thetaphi.de eMail: u...@thetaphi.de -Original Message- From: Sven Teichmann [mailto:s.teichm...@s4ip.de] Sent: Tuesday, March 25, 2014 2:57 PM To: java-user@lucene.apache.org Subject: Lucene Wildcard for zero or one character Hello, does Lucene provide a zero or one character wildcard (like ? in Perl RegEx)? Example of what I mean: house% finds house and houses As far as I know in Lucene the ? wildcard is for exactly one character, but I need a zero or one character wildcard. Best regards, -- Sven Teichmann __ Software for Intellectual Property GmbH Gewerbering 14a 83607 Holzkirchen (Germany) Phone: +49 (0)8024 46699-00 Fax:+49 (0)8024 46699-02 E-Mail: s.teichm...@s4ip.de Local Court of Munich HRB 125803, UstId DE201282006 General Manager: Alexander Wagner __ - 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
Re: Lucene Wildcard for zero or one character
/houses?/ -- Jack Krupansky -Original Message- From: Uwe Schindler Sent: Tuesday, March 25, 2014 11:34 AM To: java-user@lucene.apache.org Subject: RE: Lucene Wildcard for zero or one character The default WildcardQuery only supports: '*' (star) is the wildcard in WildcardQuery for zero or more chars. '?' is exactly one char Zero or exatly one char can only be done with a RegexpQuery: https://lucene.apache.org/core/4_7_0/core/org/apache/lucene/search/RegexpQuery.html Here is the syntax: https://lucene.apache.org/core/4_7_0/core/org/apache/lucene/util/automaton/RegExp.html Query parser supports regex queries since 4.0 with / as delimiter: http://lucene.apache.org/core/4_7_0/queryparser/org/apache/lucene/queryparser/classic/package-summary.html#package_description Uwe - Uwe Schindler H.-H.-Meier-Allee 63, D-28213 Bremen http://www.thetaphi.de eMail: u...@thetaphi.de -Original Message- From: Sven Teichmann [mailto:s.teichm...@s4ip.de] Sent: Tuesday, March 25, 2014 2:57 PM To: java-user@lucene.apache.org Subject: Lucene Wildcard for zero or one character Hello, does Lucene provide a zero or one character wildcard (like ? in Perl RegEx)? Example of what I mean: house% finds house and houses As far as I know in Lucene the ? wildcard is for exactly one character, but I need a zero or one character wildcard. Best regards, -- Sven Teichmann __ Software for Intellectual Property GmbH Gewerbering 14a 83607 Holzkirchen (Germany) Phone: +49 (0)8024 46699-00 Fax:+49 (0)8024 46699-02 E-Mail: s.teichm...@s4ip.de Local Court of Munich HRB 125803, UstId DE201282006 General Manager: Alexander Wagner __ - 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 - To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
