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From "Jean-Francois Halleux" <halleux...@skynet.be>
Subject RE: Question regarding escaped sequence
Date Wed, 03 Mar 2004 12:06:15 GMT
Otis, you can probably close bugs 16370, 11636, and 14665 as well.

Have a look at those too.

KR,

Jeff

-----Original Message-----
From: Otis Gospodnetic [mailto:otis_gospodnetic@yahoo.com]
Sent: mercredi 3 mars 2004 12:19
To: Lucene Developers List
Subject: Re: Question regarding escaped sequence


This indeed fixes the bug that the code further below demonstrates, so
I'm comitting it.

http://issues.apache.org/bugzilla/show_bug.cgi?id=24665

Otis

--- Otis Gospodnetic <otis_gospodnetic@yahoo.com> wrote:
> I have a feeling that query escaping really is broken in Lucene.
> Try running the class below like this:
> 
> prompt> java Escaper '+string' '\+string'
> 
> I get:
> 
> $ java Escaper '+string' '\+string'
> 0: +string
> 1: \+string
> QUERY: \+string
> HITS: 0
> 
> That should give me 1 hit, shouldn't it?
> 
> import org.apache.lucene.queryParser.QueryParser;
> import org.apache.lucene.analysis.*;
> import org.apache.lucene.search.*;
> import org.apache.lucene.index.*;
> import org.apache.lucene.store.*;
> import org.apache.lucene.document.*;
> 
> public class Escaper
> {
>     public static void main(String[] args) throws Exception
>     {
>         System.out.println("0: " + args[0]);
>         System.out.println("1: " + args[1]);
>         
>         Directory dir = new RAMDirectory();
>         IndexWriter writer = new IndexWriter(dir, new
> WhitespaceAnalyzer(), true);
>         Document doc = new Document();
>         doc.add(Field.Text("text", args[0]));
>         writer.addDocument(doc);
>         writer.optimize();
>         writer.close();
> 
>         QueryParser qp = new QueryParser("text", new
> WhitespaceAnalyzer());
>         Query q = qp.parse(args[1]);
>         System.out.println("QUERY: " + q.toString("text"));
> 
>         IndexSearcher searcher = new IndexSearcher(dir);
>         Hits hits = searcher.search(q);
>         System.out.println("HITS: " + hits.length());
>         searcher.close();
>     }
> }
> 
> Thanks,
> Otis
> 
> 
> --- Jean-Francois Halleux <halleux.jf@skynet.be> wrote:
> > Hello,
> > 
> > 	in TestQueryParser, method testEscaped(), I see the following:
> > 
> > ...
> > assertQueryEquals("\\+blah", a, "\\+blah");
> > assertQueryEquals("\\(blah", a, "\\(blah");
> > 
> > assertQueryEquals("\\-blah", a, "\\-blah");
> > assertQueryEquals("\\!blah", a, "\\!blah");
> > assertQueryEquals("\\{blah", a, "\\{blah");
> > assertQueryEquals("\\}blah", a, "\\}blah");
> > ...
> > 
> > is this really the expected behavior? Shouldn't \\-blah be
> > interpreted
> > as -blah and \\!blah as !blah ?
> > 
> > Thanks,
> > 
> > Jean-Francois Halleux
> > 
> > 
> >
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> > 
> 
> 
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