blob: 3a31237c994352409a5d04fa2018cfb068950c22 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
// 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
// A boosting query can be used to effectively
// demote results that match a given query.
// For more details, see:
// https://www.elastic.co/guide/en/elasticsearch/reference/5.2/query-dsl-boosting-query.html
type BoostingQuery struct {
Query
positiveClause Query
negativeClause Query
negativeBoost *float64
boost *float64
}
// Creates a new boosting query.
func NewBoostingQuery() *BoostingQuery {
return &BoostingQuery{}
}
func (q *BoostingQuery) Positive(positive Query) *BoostingQuery {
q.positiveClause = positive
return q
}
func (q *BoostingQuery) Negative(negative Query) *BoostingQuery {
q.negativeClause = negative
return q
}
func (q *BoostingQuery) NegativeBoost(negativeBoost float64) *BoostingQuery {
q.negativeBoost = &negativeBoost
return q
}
func (q *BoostingQuery) Boost(boost float64) *BoostingQuery {
q.boost = &boost
return q
}
// Creates the query source for the boosting query.
func (q *BoostingQuery) Source() (interface{}, error) {
// {
// "boosting" : {
// "positive" : {
// "term" : {
// "field1" : "value1"
// }
// },
// "negative" : {
// "term" : {
// "field2" : "value2"
// }
// },
// "negative_boost" : 0.2
// }
// }
query := make(map[string]interface{})
boostingClause := make(map[string]interface{})
query["boosting"] = boostingClause
// Negative and positive clause as well as negative boost
// are mandatory in the Java client.
// positive
if q.positiveClause != nil {
src, err := q.positiveClause.Source()
if err != nil {
return nil, err
}
boostingClause["positive"] = src
}
// negative
if q.negativeClause != nil {
src, err := q.negativeClause.Source()
if err != nil {
return nil, err
}
boostingClause["negative"] = src
}
if q.negativeBoost != nil {
boostingClause["negative_boost"] = *q.negativeBoost
}
if q.boost != nil {
boostingClause["boost"] = *q.boost
}
return query, nil
}
|
