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suggest_field.go 1.95 KB
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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
import (
"encoding/json"
)
// SuggestField can be used by the caller to specify a suggest field
// at index time. For a detailed example, see e.g.
// http://www.elasticsearch.org/blog/you-complete-me/.
type SuggestField struct {
inputs []string
output *string
payload interface{}
weight int
contextQueries []SuggesterContextQuery
}
func NewSuggestField() *SuggestField {
return &SuggestField{weight: -1}
}
func (f *SuggestField) Input(input ...string) *SuggestField {
if f.inputs == nil {
f.inputs = make([]string, 0)
}
f.inputs = append(f.inputs, input...)
return f
}
func (f *SuggestField) Output(output string) *SuggestField {
f.output = &output
return f
}
func (f *SuggestField) Payload(payload interface{}) *SuggestField {
f.payload = payload
return f
}
func (f *SuggestField) Weight(weight int) *SuggestField {
f.weight = weight
return f
}
func (f *SuggestField) ContextQuery(queries ...SuggesterContextQuery) *SuggestField {
f.contextQueries = append(f.contextQueries, queries...)
return f
}
// MarshalJSON encodes SuggestField into JSON.
func (f *SuggestField) MarshalJSON() ([]byte, error) {
source := make(map[string]interface{})
if f.inputs != nil {
switch len(f.inputs) {
case 1:
source["input"] = f.inputs[0]
default:
source["input"] = f.inputs
}
}
if f.output != nil {
source["output"] = *f.output
}
if f.payload != nil {
source["payload"] = f.payload
}
if f.weight >= 0 {
source["weight"] = f.weight
}
switch len(f.contextQueries) {
case 0:
case 1:
source["context"] = f.contextQueries[0].Source()
default:
var ctxq []interface{}
for _, query := range f.contextQueries {
ctxq = append(ctxq, query.Source())
}
source["context"] = ctxq
}
return json.Marshal(source)
}
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github.com-olivere-elastic
github.com-olivere-elastic
v2.0.51

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