CODEWITHSUNDEEP
javaelasticsearchspring-data-elasticsearch
balteo
balteo

Reputation: 24659

Using elasticsearch java API in order to compute a distance using the user's geolocation

I would like to use the java client API in order to return a computed field in the response of documents.

Specifically, I want a user to pass in a geopoint and use that geopoint in order to compute the distance between that geopoint (passed in the query) and the documents' geopoints (stored in the ES index).

I understand it is easily feasible using a script field as follows:

curl -XGET 'http://127.0.0.1:9200/geonames/_search?pretty=1'  -d '
{
   "script_fields" : {
      "distance" : {
         "params" : {
            "lat" : 2.27,
            "lon" : 50.3
         },
         "script" : "doc[\u0027location\u0027].distanceInKm(lat,lon)"
      }
   }
}

The above is quoted from the following SO post: https://stackoverflow.com/a/9309674/536299

Now how do you go about doing this with the java API or Spring Data ES?

Upvotes: 0

Views: 849

Answers (1)

Rahul
Rahul

Reputation: 16335

You can use the below to convert it to java api 

    import org.elasticsearch.action.search.SearchRequestBuilder;

    String script =  "doc[\u0027location\u0027].distanceInKm(lat,lon)";
    Map<String, Object> params = ...

    SearchRequestBuilder esRequestBuilder = new SearchRequestBuilder(<ES_CLIENT>);
    esRequestBuilder.addScriptField("distance", script, params);

Upvotes: 1

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