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From "Uwe Schindler" <...@thetaphi.de>
Subject RE: Equality Numeric Query
Date Wed, 11 Nov 2009 14:21:22 GMT
No.

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


> -----Original Message-----
> From: Shai Erera [mailto:serera@gmail.com]
> Sent: Wednesday, November 11, 2009 3:17 PM
> To: java-user@lucene.apache.org
> Subject: Re: Equality Numeric Query
> 
> Thanks !
> 
> If I use Yonik's approach, do I need to index the terms in a special way?
> 
> Shai
> 
> On Wed, Nov 11, 2009 at 4:13 PM, Uwe Schindler <uwe@thetaphi.de> wrote:
> 
> > Hi Shai,
> >
> > In 2.9.1, the approach using upper/lower bound identical and included is
> > the
> > official supported usage. The Query is optimized to rewrite efficient in
> > this case (constant score term query).
> >
> > But you can also use a TermQuery like Yonik suggested and converting the
> > numbers yourself.
> >
> > You will never hit any false terms, as the encoding clearly
> differentiate
> > between precisions.
> >
> > -----
> > Uwe Schindler
> > H.-H.-Meier-Allee 63, D-28213 Bremen
> > http://www.thetaphi.de
> > eMail: uwe@thetaphi.de
> >
> > > -----Original Message-----
> > > From: Shai Erera [mailto:serera@gmail.com]
> > > Sent: Wednesday, November 11, 2009 2:55 PM
> > > To: java-user@lucene.apache.org
> > > Subject: Equality Numeric Query
> > >
> > > Hi
> > >
> > > I index documents with numeric fields using the new Numeric package. I
> > > execute two types of queries: range queries (for example, [1 TO 20})
> and
> > > equality queries (for example 24.75). Don't mind the syntax.
> > >
> > > Currently, to execute the equality query, I create a NumericRangeQuery
> > > with
> > > the lower/upper value being 24.75 and both limits are set to
> inclusive.
> > > Two
> > > questions:
> > > 1) Is there a better approach? For example, if I had indexed the
> values
> > as
> > > separate terms, I could create a TermQuery.
> > > 2) Can I run into precision issues such that 24.751 will be matched as
> > > well?
> > >
> > > Shai
> >
> >
> > ---------------------------------------------------------------------
> > 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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