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search_aggs_metrics_geo_bounds.go 2.65 KB
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Oliver Eilhard 提交于 2019-06-30 14:31 . Update to Elasticsearch 6.8.1
// 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
// GeoBoundsAggregation is a metric aggregation that computes the
// bounding box containing all geo_point values for a field.
// See: https://www.elastic.co/guide/en/elasticsearch/reference/6.8/search-aggregations-metrics-geobounds-aggregation.html
type GeoBoundsAggregation struct {
field string
script *Script
wrapLongitude *bool
subAggregations map[string]Aggregation
meta map[string]interface{}
}
func NewGeoBoundsAggregation() *GeoBoundsAggregation {
return &GeoBoundsAggregation{
subAggregations: make(map[string]Aggregation),
}
}
func (a *GeoBoundsAggregation) Field(field string) *GeoBoundsAggregation {
a.field = field
return a
}
func (a *GeoBoundsAggregation) Script(script *Script) *GeoBoundsAggregation {
a.script = script
return a
}
func (a *GeoBoundsAggregation) WrapLongitude(wrapLongitude bool) *GeoBoundsAggregation {
a.wrapLongitude = &wrapLongitude
return a
}
func (a *GeoBoundsAggregation) SubAggregation(name string, subAggregation Aggregation) *GeoBoundsAggregation {
a.subAggregations[name] = subAggregation
return a
}
// Meta sets the meta data to be included in the aggregation response.
func (a *GeoBoundsAggregation) Meta(metaData map[string]interface{}) *GeoBoundsAggregation {
a.meta = metaData
return a
}
func (a *GeoBoundsAggregation) Source() (interface{}, error) {
// Example:
// {
// "query" : {
// "match" : { "business_type" : "shop" }
// },
// "aggs" : {
// "viewport" : {
// "geo_bounds" : {
// "field" : "location"
// "wrap_longitude" : "true"
// }
// }
// }
// }
//
// This method returns only the { "geo_bounds" : { ... } } part.
source := make(map[string]interface{})
opts := make(map[string]interface{})
source["geo_bounds"] = opts
if a.field != "" {
opts["field"] = a.field
}
if a.script != nil {
src, err := a.script.Source()
if err != nil {
return nil, err
}
opts["script"] = src
}
if a.wrapLongitude != nil {
opts["wrap_longitude"] = *a.wrapLongitude
}
// 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
}
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