/
search_filters_geo_distance.go
136 lines (115 loc) · 2.99 KB
/
search_filters_geo_distance.go
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// Copyright 2012-2015 Oliver Eilhard. All rights reserved.
// Use of this source code is governed by a MIT-license.
// See http://olivere.mit-license.org/license.txt for details.
package elastic
// GeoDistanceFilter filters documents that include only hits that exists
// within a specific distance from a geo point.
//
// For more details, see:
// http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/query-dsl-geo-distance-filter.html
type GeoDistanceFilter struct {
Filter
name string
distance string
lat float64
lon float64
geohash string
distanceType string
optimizeBbox string
cache *bool
cacheKey string
filterName string
}
// NewGeoDistanceFilter creates a new GeoDistanceFilter.
func NewGeoDistanceFilter(name string) GeoDistanceFilter {
f := GeoDistanceFilter{name: name}
return f
}
func (f GeoDistanceFilter) Distance(distance string) GeoDistanceFilter {
f.distance = distance
return f
}
func (f GeoDistanceFilter) GeoPoint(point *GeoPoint) GeoDistanceFilter {
f.lat = point.Lat
f.lon = point.Lon
return f
}
func (f GeoDistanceFilter) Point(lat, lon float64) GeoDistanceFilter {
f.lat = lat
f.lon = lon
return f
}
func (f GeoDistanceFilter) Lat(lat float64) GeoDistanceFilter {
f.lat = lat
return f
}
func (f GeoDistanceFilter) Lon(lon float64) GeoDistanceFilter {
f.lon = lon
return f
}
func (f GeoDistanceFilter) GeoHash(geohash string) GeoDistanceFilter {
f.geohash = geohash
return f
}
func (f GeoDistanceFilter) DistanceType(distanceType string) GeoDistanceFilter {
f.distanceType = distanceType
return f
}
func (f GeoDistanceFilter) OptimizeBbox(optimizeBbox string) GeoDistanceFilter {
f.optimizeBbox = optimizeBbox
return f
}
func (f GeoDistanceFilter) Cache(cache bool) GeoDistanceFilter {
f.cache = &cache
return f
}
func (f GeoDistanceFilter) CacheKey(cacheKey string) GeoDistanceFilter {
f.cacheKey = cacheKey
return f
}
func (f GeoDistanceFilter) FilterName(filterName string) GeoDistanceFilter {
f.filterName = filterName
return f
}
// Creates the query source for the geo_distance filter.
func (f GeoDistanceFilter) Source() interface{} {
// {
// "geo_distance" : {
// "distance" : "200km",
// "pin.location" : {
// "lat" : 40,
// "lon" : -70
// }
// }
// }
source := make(map[string]interface{})
params := make(map[string]interface{})
if f.geohash != "" {
params[f.name] = f.geohash
} else {
location := make(map[string]interface{})
location["lat"] = f.lat
location["lon"] = f.lon
params[f.name] = location
}
if f.distance != "" {
params["distance"] = f.distance
}
if f.distanceType != "" {
params["distance_type"] = f.distanceType
}
if f.optimizeBbox != "" {
params["optimize_bbox"] = f.optimizeBbox
}
if f.cache != nil {
params["_cache"] = *f.cache
}
if f.cacheKey != "" {
params["_cache_key"] = f.cacheKey
}
if f.filterName != "" {
params["_name"] = f.filterName
}
source["geo_distance"] = params
return source
}