mirror of https://github.com/go-gitea/gitea.git
127 lines
3.5 KiB
Go
127 lines
3.5 KiB
Go
// Copyright 2012-present Oliver Eilhard. All rights reserved.
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// Use of this source code is governed by a MIT-license.
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// See http://olivere.mit-license.org/license.txt for details.
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package elastic
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// DiversifiedSamplerAggregation Like the ‘sampler` aggregation this is a filtering aggregation used to limit any
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// sub aggregations’ processing to a sample of the top-scoring documents. The diversified_sampler aggregation adds
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// the ability to limit the number of matches that share a common value such as an "author".
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//
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// See: https://www.elastic.co/guide/en/elasticsearch/reference/7.0/search-aggregations-bucket-diversified-sampler-aggregation.html
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type DiversifiedSamplerAggregation struct {
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subAggregations map[string]Aggregation
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meta map[string]interface{}
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field string
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script *Script
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shardSize int
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maxDocsPerValue int
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executionHint string
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}
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func NewDiversifiedSamplerAggregation() *DiversifiedSamplerAggregation {
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return &DiversifiedSamplerAggregation{
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shardSize: -1,
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maxDocsPerValue: -1,
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subAggregations: make(map[string]Aggregation),
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}
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}
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func (a *DiversifiedSamplerAggregation) SubAggregation(name string, subAggregation Aggregation) *DiversifiedSamplerAggregation {
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a.subAggregations[name] = subAggregation
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return a
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}
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// Meta sets the meta data to be included in the aggregation response.
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func (a *DiversifiedSamplerAggregation) Meta(metaData map[string]interface{}) *DiversifiedSamplerAggregation {
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a.meta = metaData
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return a
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}
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// Field on which the aggregation is processed.
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func (a *DiversifiedSamplerAggregation) Field(field string) *DiversifiedSamplerAggregation {
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a.field = field
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return a
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}
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func (a *DiversifiedSamplerAggregation) Script(script *Script) *DiversifiedSamplerAggregation {
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a.script = script
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return a
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}
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// ShardSize sets the maximum number of docs returned from each shard.
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func (a *DiversifiedSamplerAggregation) ShardSize(shardSize int) *DiversifiedSamplerAggregation {
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a.shardSize = shardSize
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return a
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}
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func (a *DiversifiedSamplerAggregation) MaxDocsPerValue(maxDocsPerValue int) *DiversifiedSamplerAggregation {
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a.maxDocsPerValue = maxDocsPerValue
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return a
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}
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func (a *DiversifiedSamplerAggregation) ExecutionHint(hint string) *DiversifiedSamplerAggregation {
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a.executionHint = hint
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return a
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}
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func (a *DiversifiedSamplerAggregation) Source() (interface{}, error) {
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// Example:
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// {
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// "aggs": {
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// "my_unbiased_sample": {
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// "diversified_sampler": {
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// "shard_size": 200,
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// "field" : "author"
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// }
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// }
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// }
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// }
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//
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// This method returns only the { "diversified_sampler" : { ... } } part.
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source := make(map[string]interface{})
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opts := make(map[string]interface{})
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source["diversified_sampler"] = opts
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if a.field != "" {
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opts["field"] = a.field
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}
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if a.script != nil {
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src, err := a.script.Source()
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if err != nil {
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return nil, err
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}
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opts["script"] = src
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}
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if a.shardSize >= 0 {
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opts["shard_size"] = a.shardSize
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}
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if a.maxDocsPerValue >= 0 {
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opts["max_docs_per_value"] = a.maxDocsPerValue
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}
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if a.executionHint != "" {
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opts["execution_hint"] = a.executionHint
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}
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// AggregationBuilder (SubAggregations)
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if len(a.subAggregations) > 0 {
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aggsMap := make(map[string]interface{})
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source["aggregations"] = aggsMap
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for name, aggregate := range a.subAggregations {
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src, err := aggregate.Source()
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if err != nil {
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return nil, err
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}
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aggsMap[name] = src
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}
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}
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// Add Meta data if available
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if len(a.meta) > 0 {
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source["meta"] = a.meta
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}
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return source, nil
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}
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