Elasticsearch Tests :: Access GeoDistance without distance sorting in object field

es_geo_distance.sh

# Create index
curl -X POST http://localhost:9200/placeholders -d '{
  "mappings":{
    "placeholder":{
      "properties":{
        "name" : { "type" : "string" },
        "main_place" : { "type":"geo_point" },
        "all_places":{
          "type":"object",
          "properties":{
            "location_point":{ "type":"geo_point" }
          }
        }
      }
    }
  },
  "settings":{
    "number_of_shards":1,
    "number_of_replicas":0
  }
}'

# Create document
curl -XPUT http://localhost:9200/placeholders/placeholder/1 -d '{
	"name": "an identifier",
	"main_place": "56.958344835,24.110908139",
	"all_places": [
		{
			"location_point": {
				"lat": 56.958344835,
				"lon": 24.110908139
			}
		},
		{
			"location_point": {
				"lat": 57,
				"lon": 24
			}
		}
	]
}'

# 1. Sort by geodistance on all_places (max)
curl -XGET http://localhost:9200/placeholders/placeholder/_search?pretty=true -d '{
  "query": {
    "match_all": {}
  },
  "sort" : [
        {
            "_geo_distance" : {
                "all_places.location_point" : {"lat":56.959942, "lon":24.113656},
                "order" : "asc",
                "unit" : "km",
                "mode" : "max"
            }
        }
    ]
}'


{.........
"sort" : [ 8.191661796545175 ]
.........}

# 2. Sort by geodistance on all_places (min)
curl -XGET http://localhost:9200/placeholders/placeholder/_search?pretty=true -d '{
  "query": {
    "match_all": {}
  },
  "sort" : [
        {
            "_geo_distance" : {
                "all_places.location_point" : {"lat":56.959942, "lon":24.113656},
                "order" : "asc",
                "unit" : "km",
                "mode" : "min"
            }
        }
    ]
}'

{.........
"sort" : [ 0.24320564104938122 ]
.........}


# 3. Calculate distance on main_place

curl -XGET http://localhost:9200/placeholders/placeholder/_search?pretty=true -d '{
  "query": {
    "match_all": {}
  },
  "script_fields": {
    "distance": {
      "params": {
        "lat": 56.959942,
        "lon": 24.113656
      },
      "script": "doc.main_place.arcDistanceInKm(lat, lon)"
    }
  }
}'

{............
"distance" : [ 0.2432056410493809 ]
............}

# 4. Calculate distance on first of all_places via script_fields (Attempt: 1, using ``doc``) 
# (As documented, only simple types, not Objects, are available on doc)
 curl -XGET http://localhost:9200/placeholders/placeholder/_search?pretty=true -d '{
   "query": {
     "match_all": {}
   },
   "script_fields": {
     "distance": {
       "params": {
         "lat": 56.959942,
         "lon": 24.113656
       },
       "script": "doc.all_places.location_point.arcDistanceInKm(lat, lon)"
     }
   }
 }'
{
  "error" : "[...] PropertyAccessException[[Error: could not access: all_places; in class: org.elasticsearch.search.lookup.DocLookup]\n[Near : {... doc.all_places.location_point. ....}]\n             ^\n[Line: 1, Column: 1]]}]",
  "status" : 500
}

# 5. Calculate distance on first of all_places via script_field (Attempt: 2 using ``_source``) 
# (geopoint lat/lon data accessed via _source is a HashMap, not a GeoPoint)
curl -XGET http://localhost:9200/placeholders/placeholder/_search?pretty=true -d '{
  "query": {
    "match_all": {}
  },
  "script_fields": {
    "distance": {
      "params": {
        "lat": 56.959942,
        "lon": 24.113656
      },
      "script": "(_source.all_places.size() > 0) ?  _source.all_places.get(0).location_point.arcDistanceInKm(lat,lon) : Double.POSITIVE_INFINITY "
    }
  }
}'

{
  "error" : "[...] PropertyAccessException[[Error: unable to resolve method: java.util.HashMap.arcDistanceInKm(java.lang.Double, java.lang.Double) [arglength=2]]\n[Near : {... (_source.all_places.size() > 0 ....}]\n             ^\n[Line: 1, Column: 1]]}]",
  "status" : 500
}