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From Shai Erera <ser...@gmail.com>
Subject Re: Equality Numeric Query
Date Wed, 11 Nov 2009 14:25:41 GMT
Thanks a lot for the super fast response !

Shai

On Wed, Nov 11, 2009 at 4:21 PM, Uwe Schindler <uwe@thetaphi.de> wrote:

> 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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>

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