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Date: Thu, 30 Jul 2009 16:38:09 -0400
Message-ID: <359a92830907301338k24b767f7v8a6251b9d3cef9b0@mail.gmail.com>
Subject: 
 =?ISO-8859-1?Q?Re=3A_=24_or_=A3_symbols_are_excluded_from_Search_Query?=
From: Erick Erickson <erickerickson@gmail.com>
To: java-user@lucene.apache.org
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WhitespaceAnalyzer won't fold case. It won't strip any "odd" characters out=
.
It won't, in fact, do anything except break on white space. You might want
to write your own analyzer that incorporates, some of the filters,
especially LowercaseFilter.

On Wed, Jul 29, 2009 at 9:04 AM, cbowditch <bowditch_chris@hotmail.com>wrot=
e:

>
>
>
> Ahmet Arslan wrote:
> >
> >
> >> Can anyone tell me how I can search my index for $ or =A3.
> >
> > $ or =A3 or euro character are not reserved characters that are specifi=
ed
> in
> > QueryParser. I just verified it using the code below: (in Lucene 2.4.1)
> >
> > org.apache.lucene.queryParser.QueryParser qp =3D new
> > org.apache.lucene.queryParser.QueryParser("title", new
> > WhitespaceAnalyzer());
> > Query q =3D qp.parse("$ahmet$ AND =A3arslan=A3 te$s=A3t");
> > System.out.println(q.toString());
> >
> > Where the output is : +title:$ahmet$ +title:=A3arslan=A3 title:te$s=A3t
> >
> > Probably your analyzer is eating up those characters. Are you using
> > StandardAnalyzer or SimpleAnalyzer? LetterTokenizer and StandardTokeniz=
er
> > breaks/splits words at those characters. If thats the cause of the
> > problem, use something like WhitespaceAnalyzer or construct your querie=
s
> > programmatically using Lucene Query API. e.g. TermQuery etc.
> >
>
> Thanks for the suggestions. I had tried SimpleAnalyzer and StandardAnalyz=
er
> within Luke. When I switched to WhitespaceAnalyzer the $ and =A3 symbols =
were
> maintained.
>
> Within my own Application we seem to be using a custom Analyzer that sub
> classes Analyzer. What is the implication of switch the base class to
> WhitespaceAnalyzer?
>
> Thanks,
>
> Chris
> --
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>
>
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