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Diffstat (limited to 'vendor/gopkg.in/olivere/elastic.v5/search_aggs_bucket_children.go')
-rw-r--r-- | vendor/gopkg.in/olivere/elastic.v5/search_aggs_bucket_children.go | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/vendor/gopkg.in/olivere/elastic.v5/search_aggs_bucket_children.go b/vendor/gopkg.in/olivere/elastic.v5/search_aggs_bucket_children.go new file mode 100644 index 000000000..14d0d1ca9 --- /dev/null +++ b/vendor/gopkg.in/olivere/elastic.v5/search_aggs_bucket_children.go @@ -0,0 +1,76 @@ +// 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 + +// ChildrenAggregation is a special single bucket aggregation that enables +// aggregating from buckets on parent document types to buckets on child documents. +// It is available from 1.4.0.Beta1 upwards. +// See: https://www.elastic.co/guide/en/elasticsearch/reference/5.2/search-aggregations-bucket-children-aggregation.html +type ChildrenAggregation struct { + typ string + subAggregations map[string]Aggregation + meta map[string]interface{} +} + +func NewChildrenAggregation() *ChildrenAggregation { + return &ChildrenAggregation{ + subAggregations: make(map[string]Aggregation), + } +} + +func (a *ChildrenAggregation) Type(typ string) *ChildrenAggregation { + a.typ = typ + return a +} + +func (a *ChildrenAggregation) SubAggregation(name string, subAggregation Aggregation) *ChildrenAggregation { + a.subAggregations[name] = subAggregation + return a +} + +// Meta sets the meta data to be included in the aggregation response. +func (a *ChildrenAggregation) Meta(metaData map[string]interface{}) *ChildrenAggregation { + a.meta = metaData + return a +} + +func (a *ChildrenAggregation) Source() (interface{}, error) { + // Example: + // { + // "aggs" : { + // "to-answers" : { + // "children": { + // "type" : "answer" + // } + // } + // } + // } + // This method returns only the { "type" : ... } part. + + source := make(map[string]interface{}) + opts := make(map[string]interface{}) + source["children"] = opts + opts["type"] = a.typ + + // 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 +} |