diff options
Diffstat (limited to 'vendor/github.com/olivere/elastic/search_aggs_bucket_geo_distance.go')
| -rw-r--r-- | vendor/github.com/olivere/elastic/search_aggs_bucket_geo_distance.go | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/vendor/github.com/olivere/elastic/search_aggs_bucket_geo_distance.go b/vendor/github.com/olivere/elastic/search_aggs_bucket_geo_distance.go new file mode 100644 index 000000000..c082fb3f2 --- /dev/null +++ b/vendor/github.com/olivere/elastic/search_aggs_bucket_geo_distance.go @@ -0,0 +1,198 @@ +// Copyright 2012-present 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 + +// GeoDistanceAggregation is a multi-bucket aggregation that works on geo_point fields +// and conceptually works very similar to the range aggregation. +// The user can define a point of origin and a set of distance range buckets. +// The aggregation evaluate the distance of each document value from +// the origin point and determines the buckets it belongs to based on +// the ranges (a document belongs to a bucket if the distance between the +// document and the origin falls within the distance range of the bucket). +// See: https://www.elastic.co/guide/en/elasticsearch/reference/6.0/search-aggregations-bucket-geodistance-aggregation.html +type GeoDistanceAggregation struct { + field string + unit string + distanceType string + point string + ranges []geoDistAggRange + subAggregations map[string]Aggregation + meta map[string]interface{} +} + +type geoDistAggRange struct { + Key string + From interface{} + To interface{} +} + +func NewGeoDistanceAggregation() *GeoDistanceAggregation { + return &GeoDistanceAggregation{ + subAggregations: make(map[string]Aggregation), + ranges: make([]geoDistAggRange, 0), + } +} + +func (a *GeoDistanceAggregation) Field(field string) *GeoDistanceAggregation { + a.field = field + return a +} + +func (a *GeoDistanceAggregation) Unit(unit string) *GeoDistanceAggregation { + a.unit = unit + return a +} + +func (a *GeoDistanceAggregation) DistanceType(distanceType string) *GeoDistanceAggregation { + a.distanceType = distanceType + return a +} + +func (a *GeoDistanceAggregation) Point(latLon string) *GeoDistanceAggregation { + a.point = latLon + return a +} + +func (a *GeoDistanceAggregation) SubAggregation(name string, subAggregation Aggregation) *GeoDistanceAggregation { + a.subAggregations[name] = subAggregation + return a +} + +// Meta sets the meta data to be included in the aggregation response. +func (a *GeoDistanceAggregation) Meta(metaData map[string]interface{}) *GeoDistanceAggregation { + a.meta = metaData + return a +} +func (a *GeoDistanceAggregation) AddRange(from, to interface{}) *GeoDistanceAggregation { + a.ranges = append(a.ranges, geoDistAggRange{From: from, To: to}) + return a +} + +func (a *GeoDistanceAggregation) AddRangeWithKey(key string, from, to interface{}) *GeoDistanceAggregation { + a.ranges = append(a.ranges, geoDistAggRange{Key: key, From: from, To: to}) + return a +} + +func (a *GeoDistanceAggregation) AddUnboundedTo(from float64) *GeoDistanceAggregation { + a.ranges = append(a.ranges, geoDistAggRange{From: from, To: nil}) + return a +} + +func (a *GeoDistanceAggregation) AddUnboundedToWithKey(key string, from float64) *GeoDistanceAggregation { + a.ranges = append(a.ranges, geoDistAggRange{Key: key, From: from, To: nil}) + return a +} + +func (a *GeoDistanceAggregation) AddUnboundedFrom(to float64) *GeoDistanceAggregation { + a.ranges = append(a.ranges, geoDistAggRange{From: nil, To: to}) + return a +} + +func (a *GeoDistanceAggregation) AddUnboundedFromWithKey(key string, to float64) *GeoDistanceAggregation { + a.ranges = append(a.ranges, geoDistAggRange{Key: key, From: nil, To: to}) + return a +} + +func (a *GeoDistanceAggregation) Between(from, to interface{}) *GeoDistanceAggregation { + a.ranges = append(a.ranges, geoDistAggRange{From: from, To: to}) + return a +} + +func (a *GeoDistanceAggregation) BetweenWithKey(key string, from, to interface{}) *GeoDistanceAggregation { + a.ranges = append(a.ranges, geoDistAggRange{Key: key, From: from, To: to}) + return a +} + +func (a *GeoDistanceAggregation) Source() (interface{}, error) { + // Example: + // { + // "aggs" : { + // "rings_around_amsterdam" : { + // "geo_distance" : { + // "field" : "location", + // "origin" : "52.3760, 4.894", + // "ranges" : [ + // { "to" : 100 }, + // { "from" : 100, "to" : 300 }, + // { "from" : 300 } + // ] + // } + // } + // } + // } + // + // This method returns only the { "range" : { ... } } part. + + source := make(map[string]interface{}) + opts := make(map[string]interface{}) + source["geo_distance"] = opts + + if a.field != "" { + opts["field"] = a.field + } + if a.unit != "" { + opts["unit"] = a.unit + } + if a.distanceType != "" { + opts["distance_type"] = a.distanceType + } + if a.point != "" { + opts["origin"] = a.point + } + + var ranges []interface{} + for _, ent := range a.ranges { + r := make(map[string]interface{}) + if ent.Key != "" { + r["key"] = ent.Key + } + if ent.From != nil { + switch from := ent.From.(type) { + case int, int16, int32, int64, float32, float64: + r["from"] = from + case *int, *int16, *int32, *int64, *float32, *float64: + r["from"] = from + case string: + r["from"] = from + case *string: + r["from"] = from + } + } + if ent.To != nil { + switch to := ent.To.(type) { + case int, int16, int32, int64, float32, float64: + r["to"] = to + case *int, *int16, *int32, *int64, *float32, *float64: + r["to"] = to + case string: + r["to"] = to + case *string: + r["to"] = to + } + } + ranges = append(ranges, r) + } + opts["ranges"] = ranges + + // AggregationBuilder (SubAggregations) + if len(a.subAggregations) > 0 { + aggsMap := make(map[string]interface{}) + source["aggregations"] = aggsMap + for name, aggregate := range a.subAggregations { + src, err := aggregate.Source() + if err != nil { + return nil, err + } + aggsMap[name] = src + } + } + + // Add Meta data if available + if len(a.meta) > 0 { + source["meta"] = a.meta + } + + return source, nil +} |