Elasticsearch : Check if GeoPoint exists in the radius of multiple circles - elasticsearch

Question

My requirement is to check if a partucular geoPoint falls in radius of a circle or not.
I am using geoShape : circle to store the location. My document is as below:
PUT location_test/doc/1
{
"location" : {
"type" : "circle",
"coordinates" : [73.7769,18.5642],
"radius": "10mi"
}
}
and querying is as below :
GET location_test/_search
{
"query": {
"bool": {
"must": [
{
"geo_shape": {
"location": {
"shape": {
"type": "point",
"coordinates": [
73.877097,
18.455303
],
"relation": "contains"
}
}
}
}
]
}
}
}
This query works perfectly for single circle geo shape.
However now I want to check if a particular geoPoint falls in radius of multiple circles.
Can we have our document something like :
{
"location": [
{
"type": "circle",
"coordinates": [
73.7769,
18.5642
],
"radius": "10mi"
},
{
"type": "circle",
"coordinates": [
-118.240853,
34.052997
],
"radius": "10mi"
}
]
}
and have a query to check if a geoPoint falls in which circle.
Or is there any another way to achieve this ?
EDIT
Is it a good practice to use array of geo-points to sort documents for a particular geo-point ?
Mapping :
{
"mappings": {
"doc": {
"properties": {
"locationPoint": {
"type": "geo_point"
}
}
}
}
}
PUT location_test2/doc/1
{
"locationPoint": ["34.075433, -118.307228","36.336356,-119.304597"]
}
PUT location_test2/doc/2
{
"locationPoint": ["34.075433, -118.307228"]
}
GET location_test2/_search
{
"sort": [
{
"_geo_distance": {
"locationPoint": "34.075433, -118.307228",
"order": "asc"
}
}
]
}

Answer 1

You can surely have multiple circles in one document and the search is still going to match if any of the circles contain your point. Collapsing the steps for brevity:
PUT location_test
{"mappings":{"properties":{"location":{"type":"geo_shape","strategy":"recursive"}}}}
Taking in your array of circles:
PUT location_test/_doc/2
{"location":[{"type":"circle","coordinates":[73.7769,18.5642],"radius":"10mi"},{"type":"circle","coordinates":[-118.240853,34.052997],"radius":"10mi"}]}
Same query as for a single circle.
GET location_test/_search
{"query":{"bool":{"must":[{"geo_shape":{"location":{"shape":{"type":"point","coordinates":[73.7769,18.5642],"relation":"contains"}}}}]}}}
which yields our doc of interest. The counterintuitive but nice thing about this is that it does not matter if you provide a single object or a list of objects. ElasticSearch handles both without a mapping change.
Just note that your circles are on opposite sides of the globe:
If you're aware of this and querying your locations makes sense like this, all is fine.
From a performance standpoint keep in mind that circles are represented as polygons
which, depending on your ES version are represented as a bunch of triangles.
So you may want to index circle-like polygons instead of circles to maybe speed your indexing up or even think about merging your circles in a set of polygons (a MultiPolygon) because from what it looks like, your list of circles represents
related geometries.