108 lines
2.4 KiB
Go
108 lines
2.4 KiB
Go
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// Copyright 2012-present Oliver Eilhard. All rights reserved.
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// Use of this source code is governed by a MIT-license.
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// See http://olivere.mit-license.org/license.txt for details.
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package elastic
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// GeoDistanceQuery filters documents that include only hits that exists
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// within a specific distance from a geo point.
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//
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// For more details, see:
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// https://www.elastic.co/guide/en/elasticsearch/reference/6.2/query-dsl-geo-distance-query.html
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type GeoDistanceQuery struct {
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name string
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distance string
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lat float64
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lon float64
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geohash string
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distanceType string
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queryName string
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}
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// NewGeoDistanceQuery creates and initializes a new GeoDistanceQuery.
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func NewGeoDistanceQuery(name string) *GeoDistanceQuery {
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return &GeoDistanceQuery{name: name}
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}
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func (q *GeoDistanceQuery) GeoPoint(point *GeoPoint) *GeoDistanceQuery {
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q.lat = point.Lat
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q.lon = point.Lon
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return q
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}
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func (q *GeoDistanceQuery) Point(lat, lon float64) *GeoDistanceQuery {
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q.lat = lat
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q.lon = lon
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return q
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}
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func (q *GeoDistanceQuery) Lat(lat float64) *GeoDistanceQuery {
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q.lat = lat
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return q
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}
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func (q *GeoDistanceQuery) Lon(lon float64) *GeoDistanceQuery {
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q.lon = lon
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return q
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}
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func (q *GeoDistanceQuery) GeoHash(geohash string) *GeoDistanceQuery {
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q.geohash = geohash
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return q
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}
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func (q *GeoDistanceQuery) Distance(distance string) *GeoDistanceQuery {
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q.distance = distance
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return q
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}
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func (q *GeoDistanceQuery) DistanceType(distanceType string) *GeoDistanceQuery {
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q.distanceType = distanceType
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return q
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}
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func (q *GeoDistanceQuery) QueryName(queryName string) *GeoDistanceQuery {
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q.queryName = queryName
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return q
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}
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// Source returns JSON for the function score query.
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func (q *GeoDistanceQuery) Source() (interface{}, error) {
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// {
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// "geo_distance" : {
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// "distance" : "200km",
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// "pin.location" : {
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// "lat" : 40,
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// "lon" : -70
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// }
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// }
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// }
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source := make(map[string]interface{})
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params := make(map[string]interface{})
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if q.geohash != "" {
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params[q.name] = q.geohash
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} else {
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location := make(map[string]interface{})
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location["lat"] = q.lat
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location["lon"] = q.lon
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params[q.name] = location
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}
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if q.distance != "" {
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params["distance"] = q.distance
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}
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if q.distanceType != "" {
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params["distance_type"] = q.distanceType
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}
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if q.queryName != "" {
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params["_name"] = q.queryName
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}
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source["geo_distance"] = params
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return source, nil
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}
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