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author | Christopher Speller <crspeller@gmail.com> | 2018-01-29 14:17:40 -0800 |
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committer | GitHub <noreply@github.com> | 2018-01-29 14:17:40 -0800 |
commit | 961c04cae992eadb42d286d2f85f8a675bdc68c8 (patch) | |
tree | 3408f2d06f847e966c53485e2d54c692cdd037c1 /vendor/github.com/olivere/elastic/search_aggs_metrics_cardinality.go | |
parent | 8d66523ba7d9a77129844be476732ebfd5272d64 (diff) | |
download | chat-961c04cae992eadb42d286d2f85f8a675bdc68c8.tar.gz chat-961c04cae992eadb42d286d2f85f8a675bdc68c8.tar.bz2 chat-961c04cae992eadb42d286d2f85f8a675bdc68c8.zip |
Upgrading server dependancies (#8154)
Diffstat (limited to 'vendor/github.com/olivere/elastic/search_aggs_metrics_cardinality.go')
-rw-r--r-- | vendor/github.com/olivere/elastic/search_aggs_metrics_cardinality.go | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/vendor/github.com/olivere/elastic/search_aggs_metrics_cardinality.go b/vendor/github.com/olivere/elastic/search_aggs_metrics_cardinality.go new file mode 100644 index 000000000..3b999c849 --- /dev/null +++ b/vendor/github.com/olivere/elastic/search_aggs_metrics_cardinality.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 + +// CardinalityAggregation is a single-value metrics aggregation that +// calculates an approximate count of distinct values. +// Values can be extracted either from specific fields in the document +// or generated by a script. +// See: https://www.elastic.co/guide/en/elasticsearch/reference/6.0/search-aggregations-metrics-cardinality-aggregation.html +type CardinalityAggregation struct { + field string + script *Script + format string + subAggregations map[string]Aggregation + meta map[string]interface{} + precisionThreshold *int64 + rehash *bool +} + +func NewCardinalityAggregation() *CardinalityAggregation { + return &CardinalityAggregation{ + subAggregations: make(map[string]Aggregation), + } +} + +func (a *CardinalityAggregation) Field(field string) *CardinalityAggregation { + a.field = field + return a +} + +func (a *CardinalityAggregation) Script(script *Script) *CardinalityAggregation { + a.script = script + return a +} + +func (a *CardinalityAggregation) Format(format string) *CardinalityAggregation { + a.format = format + return a +} + +func (a *CardinalityAggregation) SubAggregation(name string, subAggregation Aggregation) *CardinalityAggregation { + a.subAggregations[name] = subAggregation + return a +} + +// Meta sets the meta data to be included in the aggregation response. +func (a *CardinalityAggregation) Meta(metaData map[string]interface{}) *CardinalityAggregation { + a.meta = metaData + return a +} + +func (a *CardinalityAggregation) PrecisionThreshold(threshold int64) *CardinalityAggregation { + a.precisionThreshold = &threshold + return a +} + +func (a *CardinalityAggregation) Rehash(rehash bool) *CardinalityAggregation { + a.rehash = &rehash + return a +} + +func (a *CardinalityAggregation) Source() (interface{}, error) { + // Example: + // { + // "aggs" : { + // "author_count" : { + // "cardinality" : { "field" : "author" } + // } + // } + // } + // This method returns only the "cardinality" : { "field" : "author" } part. + + source := make(map[string]interface{}) + opts := make(map[string]interface{}) + source["cardinality"] = 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 + } + if a.precisionThreshold != nil { + opts["precision_threshold"] = *a.precisionThreshold + } + if a.rehash != nil { + opts["rehash"] = *a.rehash + } + + // 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 +} |