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From Steve Rowe <>
Subject Re: Wildcard workaround
Date Wed, 28 May 2003 14:33:40 GMT

If this sort of thing is important enough, you could implement a 
customized analyzer which would reverse all terms and store them in a 
separate field (in addition to the a non-reversed field).  This will 
double your index size, of course.

Then, when searching, suffix query terms (those beginning with '*') 
could be reversed and wildcard-searched on the reverse-term field.

Hope it helps,
Steve Rowe

Andrei Melis wrote:
> Hello all,
> As far as I have understood, lucene does not allow search queries starting
> with wildcards.
> I have a file database indexed by content and also by filename. It would be
> nice if the user could perform a usual search like "*.ext".
> Anybody tried a workaround for this issue ? ( this is needed only for the
> name of the file, for the rest of the terms the rules are fine with me)
> I assume that this will produce a decrease of search speed... is this
> correct ?
> 10q,
> Andrei

Steve Rowe
Software Engineer
Center for Natural Language Processing
School of Information Studies
Syracuse University

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