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251 lines
7.1 KiB
Go
251 lines
7.1 KiB
Go
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// 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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// SignificantTextAggregation returns interesting or unusual occurrences
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// of free-text terms in a set.
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// See: https://www.elastic.co/guide/en/elasticsearch/reference/7.0/search-aggregations-bucket-significanttext-aggregation.html
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type SignificantTextAggregation struct {
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field string
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subAggregations map[string]Aggregation
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meta map[string]interface{}
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sourceFieldNames []string
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filterDuplicateText *bool
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includeExclude *TermsAggregationIncludeExclude
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filter Query
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bucketCountThresholds *BucketCountThresholds
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significanceHeuristic SignificanceHeuristic
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}
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func NewSignificantTextAggregation() *SignificantTextAggregation {
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return &SignificantTextAggregation{
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subAggregations: make(map[string]Aggregation),
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}
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}
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func (a *SignificantTextAggregation) Field(field string) *SignificantTextAggregation {
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a.field = field
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return a
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}
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func (a *SignificantTextAggregation) SubAggregation(name string, subAggregation Aggregation) *SignificantTextAggregation {
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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 *SignificantTextAggregation) Meta(metaData map[string]interface{}) *SignificantTextAggregation {
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a.meta = metaData
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return a
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}
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func (a *SignificantTextAggregation) SourceFieldNames(names ...string) *SignificantTextAggregation {
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a.sourceFieldNames = names
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return a
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}
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func (a *SignificantTextAggregation) FilterDuplicateText(filter bool) *SignificantTextAggregation {
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a.filterDuplicateText = &filter
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return a
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}
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func (a *SignificantTextAggregation) MinDocCount(minDocCount int64) *SignificantTextAggregation {
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if a.bucketCountThresholds == nil {
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a.bucketCountThresholds = &BucketCountThresholds{}
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}
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a.bucketCountThresholds.MinDocCount = &minDocCount
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return a
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}
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func (a *SignificantTextAggregation) ShardMinDocCount(shardMinDocCount int64) *SignificantTextAggregation {
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if a.bucketCountThresholds == nil {
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a.bucketCountThresholds = &BucketCountThresholds{}
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}
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a.bucketCountThresholds.ShardMinDocCount = &shardMinDocCount
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return a
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}
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func (a *SignificantTextAggregation) Size(size int) *SignificantTextAggregation {
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if a.bucketCountThresholds == nil {
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a.bucketCountThresholds = &BucketCountThresholds{}
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}
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a.bucketCountThresholds.RequiredSize = &size
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return a
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}
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func (a *SignificantTextAggregation) ShardSize(shardSize int) *SignificantTextAggregation {
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if a.bucketCountThresholds == nil {
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a.bucketCountThresholds = &BucketCountThresholds{}
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}
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a.bucketCountThresholds.ShardSize = &shardSize
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return a
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}
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func (a *SignificantTextAggregation) BackgroundFilter(filter Query) *SignificantTextAggregation {
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a.filter = filter
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return a
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}
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func (a *SignificantTextAggregation) SignificanceHeuristic(heuristic SignificanceHeuristic) *SignificantTextAggregation {
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a.significanceHeuristic = heuristic
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return a
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}
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func (a *SignificantTextAggregation) Include(regexp string) *SignificantTextAggregation {
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if a.includeExclude == nil {
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a.includeExclude = &TermsAggregationIncludeExclude{}
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}
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a.includeExclude.Include = regexp
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return a
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}
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func (a *SignificantTextAggregation) IncludeValues(values ...interface{}) *SignificantTextAggregation {
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if a.includeExclude == nil {
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a.includeExclude = &TermsAggregationIncludeExclude{}
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}
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a.includeExclude.IncludeValues = append(a.includeExclude.IncludeValues, values...)
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return a
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}
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func (a *SignificantTextAggregation) Exclude(regexp string) *SignificantTextAggregation {
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if a.includeExclude == nil {
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a.includeExclude = &TermsAggregationIncludeExclude{}
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}
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a.includeExclude.Exclude = regexp
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return a
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}
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func (a *SignificantTextAggregation) ExcludeValues(values ...interface{}) *SignificantTextAggregation {
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if a.includeExclude == nil {
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a.includeExclude = &TermsAggregationIncludeExclude{}
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}
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a.includeExclude.ExcludeValues = append(a.includeExclude.ExcludeValues, values...)
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return a
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}
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func (a *SignificantTextAggregation) Partition(p int) *SignificantTextAggregation {
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if a.includeExclude == nil {
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a.includeExclude = &TermsAggregationIncludeExclude{}
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}
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a.includeExclude.Partition = p
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return a
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}
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func (a *SignificantTextAggregation) NumPartitions(n int) *SignificantTextAggregation {
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if a.includeExclude == nil {
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a.includeExclude = &TermsAggregationIncludeExclude{}
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}
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a.includeExclude.NumPartitions = n
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return a
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}
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func (a *SignificantTextAggregation) IncludeExclude(includeExclude *TermsAggregationIncludeExclude) *SignificantTextAggregation {
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a.includeExclude = includeExclude
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return a
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}
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func (a *SignificantTextAggregation) Source() (interface{}, error) {
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// Example:
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// {
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// "query" : {
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// "match" : {"content" : "Bird flu"}
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// },
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// "aggregations" : {
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// "my_sample" : {
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// "sampler": {
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// "shard_size" : 100
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// },
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// "aggregations": {
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// "keywords" : {
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// "significant_text" : { "field" : "content" }
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// }
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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
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// { "significant_text" : { "field" : "content" }
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// part.
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source := make(map[string]interface{})
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opts := make(map[string]interface{})
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source["significant_text"] = 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.bucketCountThresholds != nil {
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if a.bucketCountThresholds.RequiredSize != nil {
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opts["size"] = (*a.bucketCountThresholds).RequiredSize
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}
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if a.bucketCountThresholds.ShardSize != nil {
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opts["shard_size"] = (*a.bucketCountThresholds).ShardSize
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}
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if a.bucketCountThresholds.MinDocCount != nil {
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opts["min_doc_count"] = (*a.bucketCountThresholds).MinDocCount
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}
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if a.bucketCountThresholds.ShardMinDocCount != nil {
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opts["shard_min_doc_count"] = (*a.bucketCountThresholds).ShardMinDocCount
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}
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}
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if a.filter != nil {
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src, err := a.filter.Source()
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if err != nil {
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return nil, err
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}
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opts["background_filter"] = src
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}
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if a.significanceHeuristic != nil {
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name := a.significanceHeuristic.Name()
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src, err := a.significanceHeuristic.Source()
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if err != nil {
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return nil, err
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}
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opts[name] = src
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}
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// Include/Exclude
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if ie := a.includeExclude; ie != nil {
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// Include
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if ie.Include != "" {
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opts["include"] = ie.Include
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} else if len(ie.IncludeValues) > 0 {
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opts["include"] = ie.IncludeValues
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} else if ie.NumPartitions > 0 {
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inc := make(map[string]interface{})
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inc["partition"] = ie.Partition
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inc["num_partitions"] = ie.NumPartitions
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opts["include"] = inc
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}
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// Exclude
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if ie.Exclude != "" {
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opts["exclude"] = ie.Exclude
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} else if len(ie.ExcludeValues) > 0 {
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opts["exclude"] = ie.ExcludeValues
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}
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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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