114 lines
2.4 KiB
Go
114 lines
2.4 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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// Nested query allows to query nested objects / docs (see nested mapping).
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// The query is executed against the nested objects / docs as if they were
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// indexed as separate docs (they are, internally) and resulting in the
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// root parent doc (or parent nested mapping).
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//
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// For more details, see:
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// http://www.elasticsearch.org/guide/reference/query-dsl/nested-query/
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type NestedQuery struct {
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query Query
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filter Filter
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path string
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scoreMode string
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boost *float32
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queryName string
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innerHit *InnerHit
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}
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// Creates a new nested_query query.
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func NewNestedQuery(path string) NestedQuery {
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return NestedQuery{path: path}
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}
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func (q NestedQuery) Query(query Query) NestedQuery {
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q.query = query
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return q
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}
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func (q NestedQuery) Filter(filter Filter) NestedQuery {
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q.filter = filter
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return q
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}
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func (q NestedQuery) Path(path string) NestedQuery {
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q.path = path
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return q
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}
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func (q NestedQuery) ScoreMode(scoreMode string) NestedQuery {
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q.scoreMode = scoreMode
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return q
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}
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func (q NestedQuery) Boost(boost float32) NestedQuery {
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q.boost = &boost
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return q
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}
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func (q NestedQuery) QueryName(queryName string) NestedQuery {
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q.queryName = queryName
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return q
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}
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func (q NestedQuery) InnerHit(innerHit *InnerHit) NestedQuery {
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q.innerHit = innerHit
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return q
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}
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// Creates the query source for the nested_query query.
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func (q NestedQuery) Source() interface{} {
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// {
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// "nested" : {
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// "query" : {
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// "bool" : {
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// "must" : [
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// {
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// "match" : {"obj1.name" : "blue"}
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// },
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// {
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// "range" : {"obj1.count" : {"gt" : 5}}
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// }
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// ]
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// }
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// },
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// "filter" : {
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// ...
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// },
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// "path" : "obj1",
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// "score_mode" : "avg",
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// "boost" : 1.0
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// }
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// }
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query := make(map[string]interface{})
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nq := make(map[string]interface{})
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query["nested"] = nq
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if q.query != nil {
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nq["query"] = q.query.Source()
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}
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if q.filter != nil {
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nq["filter"] = q.filter.Source()
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}
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nq["path"] = q.path
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if q.scoreMode != "" {
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nq["score_mode"] = q.scoreMode
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}
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if q.boost != nil {
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nq["boost"] = *q.boost
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}
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if q.queryName != "" {
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nq["_name"] = q.queryName
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}
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if q.innerHit != nil {
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nq["inner_hits"] = q.innerHit.Source()
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}
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return query
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}
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