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Posted to java-user@lucene.apache.org by sp <sp...@4info.com> on 2017/12/04 05:47:13 UTC

Ring geospatial query

Hello,

Does lucene java api have a way to do a ring geospatial query around a
LatLonPoint and return the results sorted by distance? By ring, I mean
points which lie beyond an inner radius and within an outer radius

Any suggestions are greatly appreciated.
Thanks



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Re: Ring geospatial query

Posted by sp <sp...@4info.com>.

Thanks Adrien. 

My documents do have a single geo-point, and your suggestion worked. This is
my final code.

	Query latlonQuery = LatLonPoint.newDistanceQuery("loc", lat. lon,
outerRadiusMeters);
	Query innerRadiusQuery = LatLonPoint.newDistanceQuery("loc", lat, lon,
innerRadiusMeters);
	latlonQuery = new BooleanQuery.Builder()
			    .add(latlonQuery, BooleanClause.Occur.MUST)
			    .add(innerRadiusQuery, BooleanClause.Occur.MUST_NOT)
			    .build();

Thanks again.




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Re: Ring geospatial query

Posted by Adrien Grand <jp...@gmail.com>.

We don't have such a query, but there are workarounds.
 - If you need this feature for pagination, you should instead use
IndexSearcher.searchAfter with a LatLonPointSortField.
 - If your documents have a single geo-point, you could build a boolean
query with a distance query or the outer radius a a FILTER clause and a
distance query of the inner radius as a MUST_NOT clause.

Le lun. 4 déc. 2017 à 09:16, sp <sp...@4info.com> a écrit :

> Hello,
>
> Does lucene java api have a way to do a ring geospatial query around a
> LatLonPoint and return the results sorted by distance? By ring, I mean
> points which lie beyond an inner radius and within an outer radius
>
> Any suggestions are greatly appreciated.
> Thanks
>
>
>
> --
> Sent from:
> http://lucene.472066.n3.nabble.com/Lucene-Java-Users-f532864.html
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> For additional commands, e-mail: java-user-help@lucene.apache.org
>
>