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From Yonik Seeley <ysee...@gmail.com>
Subject Re: Lucene and numerical fields search
Date Tue, 12 Jul 2005 16:37:44 GMT
I use ConstantScoreRangeQuery for this purpose:

http://issues.apache.org/bugzilla/show_bug.cgi?id=34673

-Yonik

On 7/12/05, Rifflard Mickaël <Mickael.Rifflard@atosorigin.com> wrote:
> Hi all,
> 
> I'm using Lucene as a fulltext search engine since a year now and this one works well
for this.
> Now, I want to add to my application search capability like : aField greater than 10
, aField between 10 and 20.
> For this, I used RangeQuery (aField:[10 TO 20] for exemple) and I received all documents
with field between these 2 values.
> All was perfect before... benchs. These one were poor. I received results after dozens
of seconds.
> 
> Here is reasons of this :
> 
> Firstly, I don't know min or max values for my field so a request can be aField:[0 TO
1000000].
> If I understand, this request is tranform in a BooleanQuery with one million of TermQuery
separated by OR.
> 
> Secondly, to perform greater than or lower than request, I wanted to use RangeQuery with
Integer.MAX_VALUE (for greater than)
> or Integer.MIN_VALUE (for lower than). If I understand always, this RangeQuery would
be transform in a BooleanQuery with many
> millions of TermQuery.
> 
> How to perform this kind of searchs (with another Lucene use, with anoter solution, ...)
?
> 
> Many thanks for your comments.
> 
> 
>         Mickaël Rifflard
> 
> 
> 
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