python - ElasticSearch GeoDistance Query -


i using geodistance query in python this

{   "query": {     "filtered": {       "query": {         "match_all": {}       },       "filter": {         "geo_distance": {           "distance": "20miles",           "location": {             "lat": 51.512497,             "lon": -0.052098           }         }       }     }   } }

it working correctly. problem how give "distance" value within document. have field distance: 50 in index each record , want use value of distance in geodistance. tried "distance":doc['distance'].value not working.

the ordinary queries , filters not expecting scripts placed within them.

assuming have stored geo_point field name of location, want use script filter using doc['field_name'].distanceinmiles(lat, lon) (as opposed distance(lat, lon) because standard units meters as-of v1.0.0):

{   "filtered" : {     "query" : { "match_all" : { } },     "filter" : {       "script" : {         "script" :           "doc['location'].distanceinmiles(lat, lon) < doc['distance'].value",         "params" : {           "lat" : 51.512497,           "lon" : -0.052098         }       }     }   } }

if running instance of elasticsearch using standard units of miles (pre-v1.0.0), can use plain distance function (or if units distance happened in now-standard meters as-of v1.0.0):

{   "filtered" : {     "query" : { "match_all" : { } },     "filter" : {       "script" : {         "script" :           "doc['location'].distance(lat, lon) < doc['distance'].value",         "params" : {           "lat" : 51.512497,           "lon" : -0.052098         }       }     }   } }

note: supply values of lat , lon directly within script one-off execution, scripts compiled and cached, using parameters allows reuse , therefore faster execution after first use.

as noted in documentation, can cache result of filter adding "_cache" : true filter, result of filter not cached default.


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