Elasticsearch geosearch with distance preference - elasticsearch

Question

Sorry for the noob question... I have Restaurant objects in Elasticsearch 2.3, each has a GeoPoint and a home delivery distance preference. In pseudocode
restaurant: {
location: (x, y)
deliveryPreference: 10km
}
and a user:
user {
location: (a,b)
}
How would I issue a search for a user looking for all restaurants that can deliver in his area?

Answer 1

The solution involves using geo_shapes. You need to model the restaurant documents as follows:
PUT restaurants
{
"mappings": {
"restaurant": {
"properties": {
"name": {
"type": "text"
},
"location": {
"type": "geo_point"
},
"delivery_area": {
"type": "geo_shape",
"tree": "quadtree",
"precision": "1m"
}
}
}
}
}
You can then index your restaurants as follows:
POST /restaurants/restaurant/1
{
"name": "My Food place",
"location": [-45.0, 45.0], <-- lon, lat !!!
"delivery_area": {
"type": "circle",
"coordinates" : [-45.0, 45.0], <-- lon, lat !!!
"radius" : "10km"
}
}
Each restaurant will thus be associated with a circle shape centered on its location and with a proper radius.
Finally, when a user wants to know which restaurant can deliver at the location she is currently at, you can issue the following geo_shape query:
POST /restaurants/_search
{
"query":{
"bool": {
"filter": {
"geo_shape": {
"delivery_area": {
"shape": {
"type": "point",
"coordinates" : [<user_lon>, <user_lat>]
},
"relation": "contains"
}
}
}
}
}
}
In this query, we are retrieving restaurants whose delivery_area shape contains the point the user is currently located at.

Answer 2

Index the restraunts documents with following mappings
{
"mappings": {
"type_name": {
"properties": {
"name": {
"type": "text"
},
"location": {
"type": "text"
},
"location_geo": {
"type": "geo_point"
}
}
}
}
}
Use geo_filter query
{
"query": {
"bool": {
"filter": {
"geo_distance": {
"distance": "10km",
"location_geo": {
"lat": 40,
"lon": -70
}
}
}
}
}
}