1 files changed, 86 insertions, 0 deletions
diff --git a/vendor/gopkg.in/olivere/elastic.v5/search_aggs_bucket_reverse_nested.go b/vendor/gopkg.in/olivere/elastic.v5/search_aggs_bucket_reverse_nested.go
new file mode 100644
index 000000000..f307f256f
--- /dev/null
+++ b/vendor/gopkg.in/olivere/elastic.v5/search_aggs_bucket_reverse_nested.go
@@ -0,0 +1,86 @@
+// 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
+
+// ReverseNestedAggregation defines a special single bucket aggregation
+// that enables aggregating on parent docs from nested documents.
+// Effectively this aggregation can break out of the nested block
+// structure and link to other nested structures or the root document,
+// which allows nesting other aggregations that aren’t part of
+// the nested object in a nested aggregation.
+//
+// See: https://www.elastic.co/guide/en/elasticsearch/reference/5.2/search-aggregations-bucket-reverse-nested-aggregation.html
+type ReverseNestedAggregation struct {
+	path            string
+	subAggregations map[string]Aggregation
+	meta            map[string]interface{}
+}
+
+// NewReverseNestedAggregation initializes a new ReverseNestedAggregation
+// bucket aggregation.
+func NewReverseNestedAggregation() *ReverseNestedAggregation {
+	return &ReverseNestedAggregation{
+		subAggregations: make(map[string]Aggregation),
+	}
+}
+
+// Path set the path to use for this nested aggregation. The path must match
+// the path to a nested object in the mappings. If it is not specified
+// then this aggregation will go back to the root document.
+func (a *ReverseNestedAggregation) Path(path string) *ReverseNestedAggregation {
+	a.path = path
+	return a
+}
+
+func (a *ReverseNestedAggregation) SubAggregation(name string, subAggregation Aggregation) *ReverseNestedAggregation {
+	a.subAggregations[name] = subAggregation
+	return a
+}
+
+// Meta sets the meta data to be included in the aggregation response.
+func (a *ReverseNestedAggregation) Meta(metaData map[string]interface{}) *ReverseNestedAggregation {
+	a.meta = metaData
+	return a
+}
+
+func (a *ReverseNestedAggregation) Source() (interface{}, error) {
+	// Example:
+	//	{
+	//    "aggs" : {
+	//      "reverse_nested" : {
+	//        "path": "..."
+	//      }
+	//    }
+	//	}
+	// This method returns only the { "reverse_nested" : {} } part.
+
+	source := make(map[string]interface{})
+	opts := make(map[string]interface{})
+	source["reverse_nested"] = opts
+
+	if a.path != "" {
+		opts["path"] = a.path
+	}
+
+	// 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
+}