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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
// Allow to specify field facets that return the N most frequent terms.
// See: http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-facets-terms-facet.html
type TermsFacet struct {
facetFilter Filter
global *bool
nested string
mode string
fieldName string
fields []string
size int
shardSize *int
allTerms *bool
exclude []string
regex string
regexFlags string
comparatorType string
script string
lang string
params map[string]interface{}
executionHint string
index string
}
func NewTermsFacet() TermsFacet {
f := TermsFacet{
size: 10,
fields: make([]string, 0),
exclude: make([]string, 0),
params: make(map[string]interface{}),
}
return f
}
func (f TermsFacet) FacetFilter(filter Facet) TermsFacet {
f.facetFilter = filter
return f
}
func (f TermsFacet) Global(global bool) TermsFacet {
f.global = &global
return f
}
func (f TermsFacet) Nested(nested string) TermsFacet {
f.nested = nested
return f
}
func (f TermsFacet) Mode(mode string) TermsFacet {
f.mode = mode
return f
}
func (f TermsFacet) Field(fieldName string) TermsFacet {
f.fieldName = fieldName
return f
}
func (f TermsFacet) Fields(fields ...string) TermsFacet {
f.fields = append(f.fields, fields...)
return f
}
func (f TermsFacet) ScriptField(scriptField string) TermsFacet {
f.script = scriptField
return f
}
func (f TermsFacet) Exclude(exclude ...string) TermsFacet {
f.exclude = append(f.exclude, exclude...)
return f
}
func (f TermsFacet) Size(size int) TermsFacet {
f.size = size
return f
}
func (f TermsFacet) ShardSize(shardSize int) TermsFacet {
f.shardSize = &shardSize
return f
}
func (f TermsFacet) Regex(regex string) TermsFacet {
f.regex = regex
return f
}
func (f TermsFacet) RegexFlags(regexFlags string) TermsFacet {
f.regexFlags = regexFlags
return f
}
func (f TermsFacet) Order(order string) TermsFacet {
f.comparatorType = order
return f
}
func (f TermsFacet) Comparator(comparatorType string) TermsFacet {
f.comparatorType = comparatorType
return f
}
func (f TermsFacet) Script(script string) TermsFacet {
f.script = script
return f
}
func (f TermsFacet) Lang(lang string) TermsFacet {
f.lang = lang
return f
}
func (f TermsFacet) ExecutionHint(hint string) TermsFacet {
f.executionHint = hint
return f
}
func (f TermsFacet) Param(name string, value interface{}) TermsFacet {
f.params[name] = value
return f
}
func (f TermsFacet) AllTerms(allTerms bool) TermsFacet {
f.allTerms = &allTerms
return f
}
func (f TermsFacet) Index(index string) TermsFacet {
f.index = index
return f
}
func (f TermsFacet) 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 TermsFacet) Source() interface{} {
source := make(map[string]interface{})
f.addFilterFacetAndGlobal(source)
opts := make(map[string]interface{})
source["terms"] = opts
if len(f.fields) > 0 {
if len(f.fields) == 1 {
opts["field"] = f.fields[0]
} else {
opts["fields"] = f.fields
}
} else {
opts["field"] = f.fieldName
}
opts["size"] = f.size
if f.shardSize != nil && *f.shardSize > f.size {
opts["shard_size"] = *f.shardSize
}
if len(f.exclude) > 0 {
opts["exclude"] = f.exclude
}
if f.regex != "" {
opts["regex"] = f.regex
if f.regexFlags != "" {
opts["regex_flags"] = f.regexFlags
}
}
if f.comparatorType != "" {
opts["order"] = f.comparatorType
}
if f.allTerms != nil {
opts["all_terms"] = *f.allTerms
}
if f.script != "" {
opts["script"] = f.script
if f.lang != "" {
opts["lang"] = f.lang
}
if len(f.params) > 0 {
opts["params"] = f.params
}
}
if f.executionHint != "" {
opts["execution_hint"] = f.executionHint
}
return source
}
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