f248089523
* Implement basic S3 notifications through queues Supports multiple queues and three basic queue types: 1. NilQueue -- messages don't get sent anywhere 2. LogQueue -- messages get logged 3. AmqpQueue -- messages are sent to an AMQP queue * api: Implement bucket notification. Supports two different queue types - AMQP - ElasticSearch. * Add support for redis
68 lines
1.8 KiB
Go
68 lines
1.8 KiB
Go
// Copyright 2012-2015 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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// MissingQuery returns documents that have only null values or no value
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// in the original field.
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//
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// For details, see:
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// https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-missing-query.html
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type MissingQuery struct {
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name string
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queryName string
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nullValue *bool
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existence *bool
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}
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// NewMissingQuery creates and initializes a new MissingQuery.
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func NewMissingQuery(name string) *MissingQuery {
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return &MissingQuery{name: name}
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}
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// QueryName sets the query name for the query that can be used when
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// searching for matched filters hit.
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func (q *MissingQuery) QueryName(queryName string) *MissingQuery {
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q.queryName = queryName
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return q
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}
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// NullValue indicates whether the missing filter automatically includes
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// fields with null value configured in the mappings. Defaults to false.
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func (q *MissingQuery) NullValue(nullValue bool) *MissingQuery {
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q.nullValue = &nullValue
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return q
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}
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// Existence indicates whether the missing filter includes documents where
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// the field doesn't exist in the docs.
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func (q *MissingQuery) Existence(existence bool) *MissingQuery {
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q.existence = &existence
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return q
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}
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// Source returns JSON for the query.
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func (q *MissingQuery) Source() (interface{}, error) {
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// {
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// "missing" : {
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// "field" : "..."
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// }
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// }
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source := make(map[string]interface{})
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params := make(map[string]interface{})
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source["missing"] = params
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params["field"] = q.name
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if q.nullValue != nil {
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params["null_value"] = *q.nullValue
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}
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if q.existence != nil {
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params["existence"] = *q.existence
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}
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if q.queryName != "" {
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params["_name"] = q.queryName
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}
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return source, nil
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}
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