Thanks for the answer Uwe,
Does it matter precision step when I use NumericRangeQuery for exact
matches? I mean if I use the default precision step when indexing that
fields it is guaranteed that:
1. With this query I will always hit the docs that contain "val" for the
"field";
2. I will never hit docs with different that have diferent "val" for the
"field";
Ivan
Uwe Schindler wrote:
It's very easy: NumericRangeQuery.nexXxxRange(field, val, val, true, true) -
val is the exact match. This is not slower as this automatically rewrites to a
non-scored TermQuery. If you already changed QueryParser, you can also override
the method for exactMatches (newTermQuery).
-----
Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
http://www.thetaphi.de
eMail: u...@thetaphi.de
-----Original Message-----
From: Ivan Vasilev [mailto:ivasi...@sirma.bg]
Sent: Friday, February 26, 2010 8:21 PM
To: LUCENE MAIL LIST
Subject: NumericField exact match
Hi Guys,
Is it possible to make exact searches on fields that are of type
NumericField and if yes how?
In the LIA book part 2 I found only information about Range searches on
such fields and how to Sort them.
Example - I have field "size" that can take integers as values.
I want to get docs that are with "size:100".
For the regular fields "size:100" is OK to pass to Parser but with
NumericField it does not work.
The only approach to support such fields that I can see is - to have
parallel casual Field (example "size2") and to index the same data
there.
And then when user wants exact search on "size" I to perform
"size2:100".
Is this the most appropriate way for my case on your opinion?
Thanks,
Ivan
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