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List:       lucene-user
Subject:    Re: How to Perform a Full Text Search on a Number with Leading Zeros or Decimals?
From:       Uwe Schindler <uwe () thetaphi ! de>
Date:       2013-06-28 19:39:42
Message-ID: 094658eb-db0a-467a-98d0-63f5875c318c () email ! android ! com
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You can add PatternReplaceFilter \
(http://lucene.apache.org/core/4_3_1/analyzers-common/org/apache/lucene/analysis/pattern/PatternReplaceFilter.html) \
to replace the tokens only consisting of digits by their vsrisnt with leading zeroes \
removed.

Uwe



Jack Krupansky <jack@basetechnology.com> schrieb:
> The user could use a regular expression query to match the numbers, but
> 
> otherwise, you will have to write some specialized token filter to
> recognize 
> numeric tokens and generate extra tokens at the same position for each
> token 
> variant that you want to search for.
> 
> -- Jack Krupansky
> 
> -----Original Message----- 
> From: Todd Hunt
> Sent: Friday, June 28, 2013 2:18 PM
> To: java-user@lucene.apache.org
> Subject: How to Perform a Full Text Search on a Number with Leading
> Zeros or 
> Decimals?
> 
> I have an application that is indexing the text from various reports
> and 
> forms that are generated from our core system.  The reports will
> contain 
> dollar amounts and various indexes that contain all numbers, but have 
> leading zeros.
> 
> If a document contains that following text that is stored in one Lucene
> 
> document field:
> 
> "Account 00000012345 owes $321.98"
> 
> What analyzer can be used to index this text and allow the user to find
> this 
> document by searching on:
> 
> 12345
> 
> OR
> 
> 321
> 
> ???
> 
> We are currently using a StandardAnalyzer which works well for most of
> our 
> use cases, but not one like this.
> 
> I realize that I could create my own token filter to convert any text
> that 
> can be represented by an Integer or Long, with leading zeros or not,
> and 
> convert the value to a normal looking integer without leading zeros. 
> But 
> I'd prefer to reuse and existing analyzer or technique to achieve the
> same 
> results.
> 
> Thank you.
> 
> 
> 
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--
Uwe Schindler
H.-H.-Meier-Allee 63, 28213 Bremen
http://www.thetaphi.de



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