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// 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
// AdjacencyMatrixAggregation returning a form of adjacency matrix.
// The request provides a collection of named filter expressions,
// similar to the filters aggregation request. Each bucket in the
// response represents a non-empty cell in the matrix of intersecting filters.
//
// For details, see
// https://www.elastic.co/guide/en/elasticsearch/reference/5.6/search-aggregations-bucket-adjacency-matrix-aggregation.html
type AdjacencyMatrixAggregation struct {
filters map[string]Query
subAggregations map[string]Aggregation
meta map[string]interface{}
}
// NewAdjacencyMatrixAggregation initializes a new AdjacencyMatrixAggregation.
func NewAdjacencyMatrixAggregation() *AdjacencyMatrixAggregation {
return &AdjacencyMatrixAggregation{
filters: make(map[string]Query),
subAggregations: make(map[string]Aggregation),
}
}
// Filters adds the filter
func (a *AdjacencyMatrixAggregation) Filters(name string, filter Query) *AdjacencyMatrixAggregation {
a.filters[name] = filter
return a
}
// SubAggregation adds a sub-aggregation to this aggregation.
func (a *AdjacencyMatrixAggregation) SubAggregation(name string, subAggregation Aggregation) *AdjacencyMatrixAggregation {
a.subAggregations[name] = subAggregation
return a
}
// Meta sets the meta data to be included in the aggregation response.
func (a *AdjacencyMatrixAggregation) Meta(metaData map[string]interface{}) *AdjacencyMatrixAggregation {
a.meta = metaData
return a
}
// Source returns the a JSON-serializable interface.
func (a *AdjacencyMatrixAggregation) Source() (interface{}, error) {
// Example:
// {
// "aggs" : {
// "interactions" : {
// "adjacency_matrix" : {
// "filters" : {
// "grpA" : { "terms" : { "accounts" : ["hillary", "sidney"] }},
// "grpB" : { "terms" : { "accounts" : ["donald", "mitt"] }},
// "grpC" : { "terms" : { "accounts" : ["vladimir", "nigel"] }}
// }
// }
// }
// }
// This method returns only the (outer) { "adjacency_matrix" : {} } part.
source := make(map[string]interface{})
adjacencyMatrix := make(map[string]interface{})
source["adjacency_matrix"] = adjacencyMatrix
dict := make(map[string]interface{})
for key, filter := range a.filters {
src, err := filter.Source()
if err != nil {
return nil, err
}
dict[key] = src
}
adjacencyMatrix["filters"] = dict
// 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
}
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