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Posted to java-user@lucene.apache.org by Anuj Shah <an...@gmail.com> on 2011/02/03 16:49:46 UTC
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
Re: Syntax for Numeric Range
Posted by Anuj Shah <an...@gmail.com>.
In my case the query engine is very generic and, along side the QueryParser,
doesn't know about the fields. So I can't decide whether a TermRangeQuery
and a NumericRangeQuery.
How about a syntax like:
> numericfield:[{1 TO 10}]
>
Using Luke this seems to parse into a TermRangeQuery with the { } in place.
It should be possible to pick this case out in newRangeQuery and construct a
NumericRangeQuery instead.
Would you know if this is likely to cause other unwanted effects when used
with more complicated query strings?
Thanks
Anuj
On 4 February 2011 15:02, Uwe Schindler <uw...@thetaphi.de> wrote:
> 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 <uw...@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
> > >
> > >
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> For additional commands, e-mail: java-user-help@lucene.apache.org
>
>
RE: Syntax for Numeric Range
Posted by Uwe Schindler <uw...@thetaphi.de>.
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 <uw...@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
> >
> >
---------------------------------------------------------------------
To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
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Re: Syntax for Numeric Range
Posted by Anuj Shah <an...@gmail.com>.
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 <uw...@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.apache.org/mod_mbox/lucene-java-user/200910.mbox/%3CBLU%0A140-W22F12E1C9AC650580E9852D0BE0@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
>
>
RE: Syntax for Numeric Range
Posted by Uwe Schindler <uw...@thetaphi.de>.
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
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
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