CODEWITHSUNDEEP
javaelasticsearchelastic-rest-client
AAHM
AAHM

Reputation: 41

Elasticsearch geo queries

We are migrating to ES and need to support different geo queries. We use a geo_point field type in our mapping. I can see that ES supports geo_bounding_box & geo_distance but I'm trying to figure out whether they can be used for our use cases below:

1.BBOX: where the box is defined using a central point & radius. As far as I understand, the geo_distance will create a circular shape, how can we use a bbox of that circle?

//something like this - but we want a box shape not circle
QueryBuilders.geoDistanceQuery("location")
            .point(lat, lon)
            .distance(r, DistanceUnit.KILOMETERS);

2.LAT_WITHIN: how can we check for documents with latitude that is within a distance (north & south) from a central latitude?

//something like this - but with only lat & radius
QueryBuilders.geoDistanceQuery(pointField)
            .point(lat)   //only lat?
            .distance(r, DistanceUnit.KILOMETERS);

3.LON_WITHIN: similarly to the above point but for longitude.

4.SAME POINT: find documents with the same lat & lon. So can we use here the geo point field in a term query or is it possible to use the lat/lon keys?

//point equal - this gives error
QueryBuilders.termQuery("location", "lat,lon");
//OR - this doesn't return
QueryBuilders.boolQuery()
    .must(QueryBuilders.termQuery("location.lat", lat))
    .must(QueryBuilders.termQuery("location.lon", lon));

using the first query gives error "Geo fields do not support exact searching, use dedicated geo queries instead: [location]". The second query doesn't return results.

Thanks

Upvotes: 0

Views: 1459

Answers (0)

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