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Posted to solr-user@lucene.apache.org by gdeconto <ge...@topproducer.com> on 2009/12/02 17:54:09 UTC
Re: how is score computed with hsin functionquery?
Grant Ingersoll-6 wrote:
>
> ...
> Yep. Also note that I added deg() and rad() functions, but for the most
> part is probably better to do the conversion during indexing.
> ...
>
as it is not possible for me to convert my data from deg to rad during
import (since queries are done using degrees), and manually putting in rad()
stmts into my hsin query seems awkward, I was looking at ways to have solr
do it for me.
One idea I had was to leverage the existing hsin code (see below). My
problem is that HavesineFunction expects ValueSource and I do not see a way
to convert my radian values back to ValueSource (pls excuse my ignorance on
this). Any help/ideas appreciated
public class MyValueSourceParser extends ValueSourceParser {
public ValueSource parse(FunctionQParser fp) throws ParseException {
ValueSource source = fp.parseValueSource();
ValueSource x1 = fp.parseValueSource();
ValueSource y1 = fp.parseValueSource();
ValueSource x2 = fp.parseValueSource();
ValueSource y2 = fp.parseValueSource();
double radius = fp.parseDouble();
return HaversineFunction(Math.toRadians(x1), Math.toRadians(y1),
Math.toRadians(x2), Math.toRadians(y2), radius); // ** how do I convert the
rad param values to ValueSource **
}
}
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Re: how is score computed with hsin functionquery?
Posted by gdeconto <ge...@topproducer.com>.
Thanks Lance, I appreciate your response.
I know what a DIH is and have already written custom transformers. I just
misunderstood your response to my message (I wasnt aware that we could use
JS to create transformers).
Anyhow, my intent is to change the tool (create a variation of hsin to
support degrees) rather than change the data (which introduces other issues,
such as having to support most systems in degrees and this one system in
radians)
any ideas/advice in that regard?
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Re: how is score computed with hsin functionquery?
Posted by Lance Norskog <go...@gmail.com>.
http://wiki.apache.org/solr/DataImportHandler
http://wiki.apache.org/solr/DataImportHandler#ScriptTransformer
The DIH is a tool inside solr that scripts pulling documents from
different data sources, transforming them and then indexing them.
On Thu, Dec 3, 2009 at 3:10 PM, gdeconto <ge...@topproducer.com> wrote:
>
>
> Lance Norskog-2 wrote:
>>
>> If you use the DataImportHandler you can add your own Javascript code to
>> do the degree->radian conversion.
>>
>
> Thx Lance, but I am not sure what you mean
> --
> View this message in context: http://old.nabble.com/how-is-score-computed-with-hsin-functionquery--tp26504265p26634948.html
> Sent from the Solr - User mailing list archive at Nabble.com.
>
>
--
Lance Norskog
goksron@gmail.com
Re: how is score computed with hsin functionquery?
Posted by gdeconto <ge...@topproducer.com>.
Lance Norskog-2 wrote:
>
> If you use the DataImportHandler you can add your own Javascript code to
> do the degree->radian conversion.
>
Thx Lance, but I am not sure what you mean
--
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Re: how is score computed with hsin functionquery?
Posted by Lance Norskog <go...@gmail.com>.
If you use the DataImportHandler you can add your own Javascript code
to do the degree->radian conversion.
On Wed, Dec 2, 2009 at 8:54 AM, gdeconto <ge...@topproducer.com> wrote:
>
>
> Grant Ingersoll-6 wrote:
>>
>> ...
>> Yep. Also note that I added deg() and rad() functions, but for the most
>> part is probably better to do the conversion during indexing.
>> ...
>>
>
> as it is not possible for me to convert my data from deg to rad during
> import (since queries are done using degrees), and manually putting in rad()
> stmts into my hsin query seems awkward, I was looking at ways to have solr
> do it for me.
>
> One idea I had was to leverage the existing hsin code (see below). My
> problem is that HavesineFunction expects ValueSource and I do not see a way
> to convert my radian values back to ValueSource (pls excuse my ignorance on
> this). Any help/ideas appreciated
>
> public class MyValueSourceParser extends ValueSourceParser {
> public ValueSource parse(FunctionQParser fp) throws ParseException {
> ValueSource source = fp.parseValueSource();
>
> ValueSource x1 = fp.parseValueSource();
> ValueSource y1 = fp.parseValueSource();
> ValueSource x2 = fp.parseValueSource();
> ValueSource y2 = fp.parseValueSource();
> double radius = fp.parseDouble();
>
> return HaversineFunction(Math.toRadians(x1), Math.toRadians(y1),
> Math.toRadians(x2), Math.toRadians(y2), radius); // ** how do I convert the
> rad param values to ValueSource **
> }
> }
> --
> View this message in context: http://old.nabble.com/how-is-score-computed-with-hsin-functionquery--tp26504265p26612289.html
> Sent from the Solr - User mailing list archive at Nabble.com.
>
>
--
Lance Norskog
goksron@gmail.com