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// Copyright 2012-2015 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
// The terms_stats facet combines both the terms and statistical allowing
// to compute stats computed on a field, per term value driven
// by another field.
// See: http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-facets-terms-stats-facet.html
type TermsStatsFacet struct {
facetFilter Filter
global *bool
nested string
mode string
keyField string
valueField string
size int
shardSize int
comparatorType string
script string
lang string
params map[string]interface{}
}
func NewTermsStatsFacet() TermsStatsFacet {
return TermsStatsFacet{
size: -1,
shardSize: -1,
params: make(map[string]interface{}),
}
}
func (f TermsStatsFacet) FacetFilter(filter Facet) TermsStatsFacet {
f.facetFilter = filter
return f
}
func (f TermsStatsFacet) Global(global bool) TermsStatsFacet {
f.global = &global
return f
}
func (f TermsStatsFacet) Nested(nested string) TermsStatsFacet {
f.nested = nested
return f
}
func (f TermsStatsFacet) Mode(mode string) TermsStatsFacet {
f.mode = mode
return f
}
func (f TermsStatsFacet) KeyField(keyField string) TermsStatsFacet {
f.keyField = keyField
return f
}
func (f TermsStatsFacet) ValueField(valueField string) TermsStatsFacet {
f.valueField = valueField
return f
}
func (f TermsStatsFacet) Order(comparatorType string) TermsStatsFacet {
f.comparatorType = comparatorType
return f
}
func (f TermsStatsFacet) Size(size int) TermsStatsFacet {
f.size = size
return f
}
func (f TermsStatsFacet) ShardSize(shardSize int) TermsStatsFacet {
f.shardSize = shardSize
return f
}
func (f TermsStatsFacet) AllTerms() TermsStatsFacet {
f.size = 0
return f
}
func (f TermsStatsFacet) ValueScript(script string) TermsStatsFacet {
f.script = script
return f
}
func (f TermsStatsFacet) Param(name string, value interface{}) TermsStatsFacet {
f.params[name] = value
return f
}
func (f TermsStatsFacet) addFilterFacetAndGlobal(source map[string]interface{}) {
if f.facetFilter != nil {
source["facet_filter"] = f.facetFilter.Source()
}
if f.nested != "" {
source["nested"] = f.nested
}
if f.global != nil {
source["global"] = *f.global
}
if f.mode != "" {
source["mode"] = f.mode
}
}
func (f TermsStatsFacet) Source() interface{} {
source := make(map[string]interface{})
f.addFilterFacetAndGlobal(source)
opts := make(map[string]interface{})
source["terms_stats"] = opts
opts["key_field"] = f.keyField
if f.valueField != "" {
opts["value_field"] = f.valueField
}
if f.script != "" {
opts["value_script"] = f.script
if f.lang != "" {
opts["lang"] = f.lang
}
if len(f.params) > 0 {
opts["params"] = f.params
}
}
if f.comparatorType != "" {
opts["order"] = f.comparatorType
}
if f.size != -1 {
opts["size"] = f.size
}
if f.shardSize > f.size {
opts["shard_size"] = f.shardSize
}
return source
}
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