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From "Uwe Schindler" <...@thetaphi.de>
Subject RE: Syntax for Numeric Range
Date Fri, 04 Feb 2011 15:02:47 GMT
You have everything you need to implement this. This is much easier to
change the syntax.

-----
Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
http://www.thetaphi.de
eMail: uwe@thetaphi.de

> -----Original Message-----
> From: Anuj Shah [mailto:anujshahwork@gmail.com]
> Sent: Friday, February 04, 2011 2:53 PM
> To: java-user@lucene.apache.org
> Subject: Re: Syntax for Numeric Range
> 
> Hi,
> 
> I see why the existing syntax cannot be used to automatically generate a
> NumericRange. But, is it possible to extend the QueryParser to include
> additional syntax for a numeric range. e.g.
> 
> numericfield:[1;10]
> >
> 
> The user can be trained to use this syntax for certain fields (i.e those
that I
> know are indexed as NumericField)
> 
> Thanks
> 
> Anuj
> 
> 
> 
> 
> 
> On 3 February 2011 16:22, Uwe Schindler <uwe@thetaphi.de> wrote:
> 
> > Hi Anuj,
> >
> > You have to subclass QueryParser and override newRangeQuery() to parse
> > yourself. Automatic parsing is impossible, because QueryParser does
> > not know (in contrast to Apache Solr) which fields have which type
> > (Lucene has no field schema).
> >
> > Example how to do this:
> >
> > http://mail-archives.apache.org/mod_mbox/lucene-java-
> user/200910.mbox/
> > %3CBLU
> > 140-W22F12E1C9AC650580E9852D0BE0@phx.gbl%3E<http://mail-
> archives.apach
> > e.org/mod_mbox/lucene-java-user/200910.mbox/%3CBLU%0A140-
> W22F12E1C9AC6
> > 50580E9852D0BE0@phx.gbl%3E>
> >
> > Uwe
> >
> > -----
> > Uwe Schindler
> > H.-H.-Meier-Allee 63, D-28213 Bremen
> > http://www.thetaphi.de
> > eMail: uwe@thetaphi.de
> >
> >
> > > -----Original Message-----
> > > From: Anuj Shah [mailto:anujshahwork@gmail.com]
> > > Sent: Thursday, February 03, 2011 4:50 PM
> > > To: java-user@lucene.apache.org
> > > Subject: Syntax for Numeric Range
> > >
> > > Is there a query syntax for specifying a numeric range for a field
> > indexed
> > as a
> > > NumericField.
> > >
> > > I've tried
> > >
> > > numericfield:[0 TO 10]
> > > >
> > >
> > > But it is parsed as a TermRangeQuery and not a NumericRangeQuery.
> > >
> > > Many thanks
> > >
> > > Anuj
> >
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> > For additional commands, e-mail: java-user-help@lucene.apache.org
> >
> >


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