mirror of https://github.com/go-gitea/gitea.git
109 lines
2.7 KiB
Go
109 lines
2.7 KiB
Go
// 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
|
|
|
|
// MaxAggregation is a single-value metrics aggregation that keeps track and
|
|
// returns the maximum value among the numeric values extracted from
|
|
// the aggregated documents. These values can be extracted either from
|
|
// specific numeric fields in the documents, or be generated by
|
|
// a provided script.
|
|
// See: https://www.elastic.co/guide/en/elasticsearch/reference/7.0/search-aggregations-metrics-max-aggregation.html
|
|
type MaxAggregation struct {
|
|
field string
|
|
script *Script
|
|
format string
|
|
missing interface{}
|
|
subAggregations map[string]Aggregation
|
|
meta map[string]interface{}
|
|
}
|
|
|
|
func NewMaxAggregation() *MaxAggregation {
|
|
return &MaxAggregation{
|
|
subAggregations: make(map[string]Aggregation),
|
|
}
|
|
}
|
|
|
|
func (a *MaxAggregation) Field(field string) *MaxAggregation {
|
|
a.field = field
|
|
return a
|
|
}
|
|
|
|
func (a *MaxAggregation) Script(script *Script) *MaxAggregation {
|
|
a.script = script
|
|
return a
|
|
}
|
|
|
|
func (a *MaxAggregation) Format(format string) *MaxAggregation {
|
|
a.format = format
|
|
return a
|
|
}
|
|
|
|
func (a *MaxAggregation) Missing(missing interface{}) *MaxAggregation {
|
|
a.missing = missing
|
|
return a
|
|
}
|
|
|
|
func (a *MaxAggregation) SubAggregation(name string, subAggregation Aggregation) *MaxAggregation {
|
|
a.subAggregations[name] = subAggregation
|
|
return a
|
|
}
|
|
|
|
// Meta sets the meta data to be included in the aggregation response.
|
|
func (a *MaxAggregation) Meta(metaData map[string]interface{}) *MaxAggregation {
|
|
a.meta = metaData
|
|
return a
|
|
}
|
|
func (a *MaxAggregation) Source() (interface{}, error) {
|
|
// Example:
|
|
// {
|
|
// "aggs" : {
|
|
// "max_price" : { "max" : { "field" : "price" } }
|
|
// }
|
|
// }
|
|
// This method returns only the { "max" : { "field" : "price" } } part.
|
|
|
|
source := make(map[string]interface{})
|
|
opts := make(map[string]interface{})
|
|
source["max"] = opts
|
|
|
|
// ValuesSourceAggregationBuilder
|
|
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.format != "" {
|
|
opts["format"] = a.format
|
|
}
|
|
if a.missing != nil {
|
|
opts["missing"] = a.missing
|
|
}
|
|
|
|
// 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
|
|
}
|