1 files changed, 120 insertions, 0 deletions
diff --git a/vendor/github.com/olivere/elastic/search_aggs_matrix_stats.go b/vendor/github.com/olivere/elastic/search_aggs_matrix_stats.go
new file mode 100644
index 000000000..785f392b6
--- /dev/null
+++ b/vendor/github.com/olivere/elastic/search_aggs_matrix_stats.go
@@ -0,0 +1,120 @@
+// 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
+
+// MatrixMatrixStatsAggregation ...
+// See https://www.elastic.co/guide/en/elasticsearch/reference/6.0/search-aggregations-metrics-stats-aggregation.html
+// for details.
+type MatrixStatsAggregation struct {
+	fields          []string
+	missing         interface{}
+	format          string
+	valueType       interface{}
+	mode            string
+	subAggregations map[string]Aggregation
+	meta            map[string]interface{}
+}
+
+// NewMatrixStatsAggregation initializes a new MatrixStatsAggregation.
+func NewMatrixStatsAggregation() *MatrixStatsAggregation {
+	return &MatrixStatsAggregation{
+		subAggregations: make(map[string]Aggregation),
+	}
+}
+
+func (a *MatrixStatsAggregation) Fields(fields ...string) *MatrixStatsAggregation {
+	a.fields = append(a.fields, fields...)
+	return a
+}
+
+// Missing configures the value to use when documents miss a value.
+func (a *MatrixStatsAggregation) Missing(missing interface{}) *MatrixStatsAggregation {
+	a.missing = missing
+	return a
+}
+
+// Mode specifies how to operate. Valid values are: sum, avg, median, min, or max.
+func (a *MatrixStatsAggregation) Mode(mode string) *MatrixStatsAggregation {
+	a.mode = mode
+	return a
+}
+
+func (a *MatrixStatsAggregation) Format(format string) *MatrixStatsAggregation {
+	a.format = format
+	return a
+}
+
+func (a *MatrixStatsAggregation) ValueType(valueType interface{}) *MatrixStatsAggregation {
+	a.valueType = valueType
+	return a
+}
+
+func (a *MatrixStatsAggregation) SubAggregation(name string, subAggregation Aggregation) *MatrixStatsAggregation {
+	a.subAggregations[name] = subAggregation
+	return a
+}
+
+// Meta sets the meta data to be included in the aggregation response.
+func (a *MatrixStatsAggregation) Meta(metaData map[string]interface{}) *MatrixStatsAggregation {
+	a.meta = metaData
+	return a
+}
+
+// Source returns the JSON to serialize into the request, or an error.
+func (a *MatrixStatsAggregation) Source() (interface{}, error) {
+	// Example:
+	//	{
+	//    "aggs" : {
+	//      "matrixstats" : {
+	//        "matrix_stats" : {
+	//          "fields" : ["poverty", "income"],
+	//          "missing": {"income": 50000},
+	//          "mode": "avg",
+	//          ...
+	//        }
+	//      }
+	//    }
+	//	}
+	// This method returns only the { "matrix_stats" : { ... } } part.
+
+	source := make(map[string]interface{})
+	opts := make(map[string]interface{})
+	source["matrix_stats"] = opts
+
+	// MatrixStatsAggregationBuilder
+	opts["fields"] = a.fields
+	if a.missing != nil {
+		opts["missing"] = a.missing
+	}
+	if a.format != "" {
+		opts["format"] = a.format
+	}
+	if a.valueType != nil {
+		opts["value_type"] = a.valueType
+	}
+	if a.mode != "" {
+		opts["mode"] = a.mode
+	}
+
+	// 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
+}