73 lines
1.9 KiB
Go
73 lines
1.9 KiB
Go
// 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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// GeoPolygonQuery allows to include hits that only fall within a polygon of points.
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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-polygon-query.html
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type GeoPolygonQuery struct {
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name string
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points []*GeoPoint
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queryName string
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}
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// NewGeoPolygonQuery creates and initializes a new GeoPolygonQuery.
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func NewGeoPolygonQuery(name string) *GeoPolygonQuery {
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return &GeoPolygonQuery{
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name: name,
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points: make([]*GeoPoint, 0),
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}
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}
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// AddPoint adds a point from latitude and longitude.
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func (q *GeoPolygonQuery) AddPoint(lat, lon float64) *GeoPolygonQuery {
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q.points = append(q.points, GeoPointFromLatLon(lat, lon))
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return q
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}
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// AddGeoPoint adds a GeoPoint.
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func (q *GeoPolygonQuery) AddGeoPoint(point *GeoPoint) *GeoPolygonQuery {
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q.points = append(q.points, point)
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return q
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}
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func (q *GeoPolygonQuery) QueryName(queryName string) *GeoPolygonQuery {
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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 *GeoPolygonQuery) Source() (interface{}, error) {
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// "geo_polygon" : {
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// "person.location" : {
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// "points" : [
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// {"lat" : 40, "lon" : -70},
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// {"lat" : 30, "lon" : -80},
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// {"lat" : 20, "lon" : -90}
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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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source["geo_polygon"] = params
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polygon := make(map[string]interface{})
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params[q.name] = polygon
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var points []interface{}
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for _, point := range q.points {
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points = append(points, point.Source())
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}
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polygon["points"] = points
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if q.queryName != "" {
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params["_name"] = q.queryName
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}
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return source, nil
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}
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