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From Alain Lauzon <alau...@libertefinanciere.com>
Subject Re: AW: Cannot match field containing value "No"
Date Wed, 22 Jan 2003 18:28:39 GMT
That's what I did.  ;-(

At 10:24 2003-01-22 -0800, you wrote:
>You don't say whether you threw away the old index or if you switched
>the Analyzer on an existing index.
>You should throw the old index away and reindex all of your docs with
>an Analyzer that handles ON, OR, IN, etc.
>
>Otis
>
>
>--- Alain Lauzon <alauzon@libertefinanciere.com> wrote:
> > I am having the same problem with words "ON", "OR" and "IN",
> > standing for, Ontario, Oregon and Indiana.  I have created my own
> > Analyzer and remove the stop word "on", "or" and "in" and I have
> > the same results.
> >
> > Is there another place in the code that is using those stop words ?
> >
> > Anybody with the same problem ?
> >
> > Alain Lauzon
> >
> >
> > At 11:54 2003-01-22 +0100, you wrote:
> > >Hello,
> > >
> > > > I seem to be having trouble matching the value "No". The
> > > > snippet of my insert index code looks like this:
> > > > --------------------
> > > > IndexWriter writer = new IndexWriter("indexTest", new
> > > > StandardAnalyzer(), true);
> > > > Document doc = new Document();
> > > > doc.add(Field.Text("YesNo", choice));
> > > > writer.addDocument(doc);
> > > > writer.optimize();
> > > > writer.close();
> > > > -------------------
> > > > where the value of the variable choice is either a "Yes" or a
> > "No"
> > > > and the code to search it looks like this :
> > > >
> > > > ---------------------
> > > > IndexSearcher searcher = new
> > > > IndexSearcher(IndexReader.open("indexTest"));
> > > > Analyzer analyzer = new StandardAnalyzer();
> > > > Query query =
> > > > org.apache.lucene.queryParser.QueryParser.parse(queryString,
> > > > "YesNo", analyzer);
> > > > Hits hits = searcher.search(query);
> > > > System.out.println("Found "+hits.length()+" match");
> > > >
> > > > ---------------------
> > > > where the value of queryString contains the user input which
> > > > is wither a "Yes" or "No"
> > > >
> > > >
> > > > Whenever I insert a "No", I would not be able to retrieve it
> > > > (the output will show 0 mtaches) even though I use the same
> > > > analyzer. Any other values like "Yes","n","y" would get hits.
> > > >  Has anyone went through similar errors? Is this a bug or is
> > > > it some limitation, where lucene can't accept string values
> > > > of "No"? Or am i missing something?
> > > >
> > >
> > >The StandardAnalyzer uses a small list of english stop words. These
> > are
> > >common word, which will be ignored, e.g. "no" or "a". Checkout
> > >org.apache.lucene.analysis.standard.StandardAnalyser for the full
> > list.
> > >
> > >You have to write your own analyzer. This is very easy: Copy the
> > code from
> > >StandardAnalyzer to your own class and remove the StopFilter or
> > change
> > >the list of Stopwords. Don't forget to rebuild your index after
> > this.
> > >Regards,
> > >         Wolf-Dietrich
> > >
> > >--
> > >Wolf-Dietrich Materna
> > >Development
> > >
> > >empolis GmbH -  arvato knowledge management
> > >Kekul├ęstr. 7
> > >12489 Berlin, Germany
> > >
> > >phone :  +49-30-6780-6510
> > >fax :    +49-30-6780-6549
> > >
> > ><<mailto:Wolf-Dietrich.Materna@empolis.com>>
> > <<http://www.empolis.com>>
> > >
> > >--
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