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// Copyright 2012-present 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
// HasParentQuery accepts a query and a parent type. The query is executed
// in the parent document space which is specified by the parent type.
// This query returns child documents which associated parents have matched.
// For the rest has_parent query has the same options and works in the
// same manner as has_child query.
//
// For more details, see
// https://www.elastic.co/guide/en/elasticsearch/reference/5.2/query-dsl-has-parent-query.html
type HasParentQuery struct {
query Query
parentType string
boost *float64
score *bool
queryName string
innerHit *InnerHit
}
// NewHasParentQuery creates and initializes a new has_parent query.
func NewHasParentQuery(parentType string, query Query) *HasParentQuery {
return &HasParentQuery{
query: query,
parentType: parentType,
}
}
// Boost sets the boost for this query.
func (q *HasParentQuery) Boost(boost float64) *HasParentQuery {
q.boost = &boost
return q
}
// Score defines if the parent score is mapped into the child documents.
func (q *HasParentQuery) Score(score bool) *HasParentQuery {
q.score = &score
return q
}
// QueryName specifies the query name for the filter that can be used when
// searching for matched filters per hit.
func (q *HasParentQuery) QueryName(queryName string) *HasParentQuery {
q.queryName = queryName
return q
}
// InnerHit sets the inner hit definition in the scope of this query and
// reusing the defined type and query.
func (q *HasParentQuery) InnerHit(innerHit *InnerHit) *HasParentQuery {
q.innerHit = innerHit
return q
}
// Source returns JSON for the function score query.
func (q *HasParentQuery) Source() (interface{}, error) {
// {
// "has_parent" : {
// "parent_type" : "blog",
// "query" : {
// "term" : {
// "tag" : "something"
// }
// }
// }
// }
source := make(map[string]interface{})
query := make(map[string]interface{})
source["has_parent"] = query
src, err := q.query.Source()
if err != nil {
return nil, err
}
query["query"] = src
query["parent_type"] = q.parentType
if q.boost != nil {
query["boost"] = *q.boost
}
if q.score != nil {
query["score"] = *q.score
}
if q.queryName != "" {
query["_name"] = q.queryName
}
if q.innerHit != nil {
src, err := q.innerHit.Source()
if err != nil {
return nil, err
}
query["inner_hits"] = src
}
return source, nil
}
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