diff options
Diffstat (limited to 'vendor/gopkg.in/olivere/elastic.v5/search_aggs_metrics_min.go')
-rw-r--r-- | vendor/gopkg.in/olivere/elastic.v5/search_aggs_metrics_min.go | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/vendor/gopkg.in/olivere/elastic.v5/search_aggs_metrics_min.go b/vendor/gopkg.in/olivere/elastic.v5/search_aggs_metrics_min.go new file mode 100644 index 000000000..c1ca6922b --- /dev/null +++ b/vendor/gopkg.in/olivere/elastic.v5/search_aggs_metrics_min.go @@ -0,0 +1,100 @@ +// 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 + +// MinAggregation is a single-value metrics aggregation that keeps track and +// returns the minimum value among 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/5.2/search-aggregations-metrics-min-aggregation.html +type MinAggregation struct { + field string + script *Script + format string + subAggregations map[string]Aggregation + meta map[string]interface{} +} + +func NewMinAggregation() *MinAggregation { + return &MinAggregation{ + subAggregations: make(map[string]Aggregation), + } +} + +func (a *MinAggregation) Field(field string) *MinAggregation { + a.field = field + return a +} + +func (a *MinAggregation) Script(script *Script) *MinAggregation { + a.script = script + return a +} + +func (a *MinAggregation) Format(format string) *MinAggregation { + a.format = format + return a +} + +func (a *MinAggregation) SubAggregation(name string, subAggregation Aggregation) *MinAggregation { + a.subAggregations[name] = subAggregation + return a +} + +// Meta sets the meta data to be included in the aggregation response. +func (a *MinAggregation) Meta(metaData map[string]interface{}) *MinAggregation { + a.meta = metaData + return a +} + +func (a *MinAggregation) Source() (interface{}, error) { + // Example: + // { + // "aggs" : { + // "min_price" : { "min" : { "field" : "price" } } + // } + // } + // This method returns only the { "min" : { "field" : "price" } } part. + + source := make(map[string]interface{}) + opts := make(map[string]interface{}) + source["min"] = 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 + } + + // 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 +} |