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From "Mark Miller" <markrmil...@gmail.com>
Subject Re: Problem with a search engine
Date Mon, 05 Feb 2007 16:21:29 GMT
My bad...looking at a modified StandardAnalyzer instead of the correct one.
Belay last.

On 2/5/07, Mark Miller <markrmiller@gmail.com> wrote:
>
> StandardAnalyzer does not index pure numbers. It will index alphanumeric
> tokens and numbers that are connected with one of: "_"|"-"|"/"|"."|"," If
> you wish to index pure numbers you might want to add another regex to
> StandardAnalyzer that recognizes a series of digits - don't forget to add
> the new token type to the grammar lower in the StandardTokenizer.jj file.
>
> - Mark
>
> On 2/5/07, Xavier To <to.xavier@courrier.uqam.ca> wrote:
> >
> > Thanks for taking time to answer me. The problem is that I'm not allowed
> > to post code due to a confidentiality contract that I was required to sign.
> > I'll try to see if I can get a special permission to post code since I'm
> > wasting so much time trying to find the answer to this.
> >
> > I tried looking for each time the query is touched and numbers are still
> > present in the query. I don't know if it's the analyzer, but if it was,
> > woundl't the numbers be cut out of the index completely ? As I said in my
> > 1st post, they are "findable" with Lukeall. If I read right, the
> > FrenchAnalyzer included in lucene is supposed to be based on
> > StandardAnalyzer so I really fail to see what is going wrong. Might it be
> > the fact that the tokenizer used is Stringtokenizer and not Tokenstream ?
> > The numbers are tokenized, and in the returned query they are present....
> >
> > I really don't know where they get zapped out of existence...
> >
> > Thanks again for helping.
> >
> > Xavier Tô
> > Bacc. en Informatique et Génie Logiciel
> > to.xavier@courrier.uqam.ca
> > (450)434-8905
> >
> >
> > --------------------------------------------------------------------------------------
> >
> > Hard to tell without seeing any code.  Perhaps numbers are being removed
> > from the query string
> > during search.
> > Make sure the same or at least "compatible" Analyzer is used during both
> > indexing and querying.
> > Grab the code from Lucene in Action .... hm, lucenebook.com may be down
> > at the moment, but
> > that's where you can get the code normally.  The code includes some
> > classes that let you run
> > a query string through a set of Analyzers and see how each of them
> > behaves and what it does
> > to a query.
> >
> > Otis
> >
> > ----- Original Message ----
> > From: "To, Xavier" <Xavier.To@axa-canada.com>
> > To: java-user@lucene.apache.org
> > Sent: Wednesday, January 31, 2007 12:21:27 AM
> > Subject: Problem with a search engine
> >
> >
> > Hi, I recently started an internship and I've been asked to fix their
> > search engine so numbers are searched. At first, I thought it was the
> > Analyzer that wasn't working right, but we're using StandardAnalyzer and
> > the numbers are indexed (I checked with Lukeall). Then I thought they
> > are not tokenized during the search, but they are. They just seem to be
> > ignored for some reason. Did anyone experienced something similar ? If
> > so, how can I fix this ? It's probably something that would jump in my
> > face if it was alive, but I just can't see it. Can anyone help me ? It
> > would be very much appreciated.
> >
> >
> > Xavier T�
> > Stagiaire
> > D�veloppement - Maintenance & �volution
> > AXA Canada Tech
> > 2020, rue University, bureau 700
> > Montr�al(Qu�bec)H3A 2A5
> > T�l. :  (514) 282-6817, poste 2224
> > T�l�c. :  (514) 282-6017
> > Courriel : Xavier.To@axa-canada.com <mailto:Xavier.To@axa-canada.com>
> >   _____
> >
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