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minio/vendor/gopkg.in/olivere/elastic.v3/search_queries_missing.go

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1.8 KiB

// 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
// MissingQuery returns documents that have only null values or no value
// in the original field.
//
// For details, see:
// https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-missing-query.html
type MissingQuery struct {
name string
queryName string
nullValue *bool
existence *bool
}
// NewMissingQuery creates and initializes a new MissingQuery.
func NewMissingQuery(name string) *MissingQuery {
return &MissingQuery{name: name}
}
// QueryName sets the query name for the query that can be used when
// searching for matched filters hit.
func (q *MissingQuery) QueryName(queryName string) *MissingQuery {
q.queryName = queryName
return q
}
// NullValue indicates whether the missing filter automatically includes
// fields with null value configured in the mappings. Defaults to false.
func (q *MissingQuery) NullValue(nullValue bool) *MissingQuery {
q.nullValue = &nullValue
return q
}
// Existence indicates whether the missing filter includes documents where
// the field doesn't exist in the docs.
func (q *MissingQuery) Existence(existence bool) *MissingQuery {
q.existence = &existence
return q
}
// Source returns JSON for the query.
func (q *MissingQuery) Source() (interface{}, error) {
// {
// "missing" : {
// "field" : "..."
// }
// }
source := make(map[string]interface{})
params := make(map[string]interface{})
source["missing"] = params
params["field"] = q.name
if q.nullValue != nil {
params["null_value"] = *q.nullValue
}
if q.existence != nil {
params["existence"] = *q.existence
}
if q.queryName != "" {
params["_name"] = q.queryName
}
return source, nil
}