forked from olivere/elastic
-
Notifications
You must be signed in to change notification settings - Fork 0
/
search_queries_fsq.go
137 lines (120 loc) · 3.57 KB
/
search_queries_fsq.go
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
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
// 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
// The function_score allows you to modify the score of documents that
// are retrieved by a query. This can be useful if, for example,
// a score function is computationally expensive and it is sufficient
// to compute the score on a filtered set of documents.
// For more details, see
// http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/query-dsl-function-score-query.html
type FunctionScoreQuery struct {
query Query
filter Filter
boost *float32
maxBoost *float32
scoreMode string
boostMode string
filters []Filter
scoreFuncs []ScoreFunction
minScore *float32
weight *float64
}
// NewFunctionScoreQuery creates a new function score query.
func NewFunctionScoreQuery() FunctionScoreQuery {
return FunctionScoreQuery{
filters: make([]Filter, 0),
scoreFuncs: make([]ScoreFunction, 0),
}
}
func (q FunctionScoreQuery) Query(query Query) FunctionScoreQuery {
q.query = query
q.filter = nil
return q
}
func (q FunctionScoreQuery) Filter(filter Filter) FunctionScoreQuery {
q.query = nil
q.filter = filter
return q
}
func (q FunctionScoreQuery) Add(filter Filter, scoreFunc ScoreFunction) FunctionScoreQuery {
q.filters = append(q.filters, filter)
q.scoreFuncs = append(q.scoreFuncs, scoreFunc)
return q
}
func (q FunctionScoreQuery) AddScoreFunc(scoreFunc ScoreFunction) FunctionScoreQuery {
q.filters = append(q.filters, nil)
q.scoreFuncs = append(q.scoreFuncs, scoreFunc)
return q
}
func (q FunctionScoreQuery) ScoreMode(scoreMode string) FunctionScoreQuery {
q.scoreMode = scoreMode
return q
}
func (q FunctionScoreQuery) BoostMode(boostMode string) FunctionScoreQuery {
q.boostMode = boostMode
return q
}
func (q FunctionScoreQuery) MaxBoost(maxBoost float32) FunctionScoreQuery {
q.maxBoost = &maxBoost
return q
}
func (q FunctionScoreQuery) Boost(boost float32) FunctionScoreQuery {
q.boost = &boost
return q
}
func (q FunctionScoreQuery) MinScore(minScore float32) FunctionScoreQuery {
q.minScore = &minScore
return q
}
// Source returns JSON for the function score query.
func (q FunctionScoreQuery) Source() interface{} {
source := make(map[string]interface{})
query := make(map[string]interface{})
source["function_score"] = query
if q.query != nil {
query["query"] = q.query.Source()
} else if q.filter != nil {
query["filter"] = q.filter.Source()
}
if len(q.filters) == 1 && q.filters[0] == nil {
// Weight needs to be serialized on this level.
if weight := q.scoreFuncs[0].GetWeight(); weight != nil {
query["weight"] = weight
}
// Serialize the score function
query[q.scoreFuncs[0].Name()] = q.scoreFuncs[0].Source()
} else {
funcs := make([]interface{}, len(q.filters))
for i, filter := range q.filters {
hsh := make(map[string]interface{})
if filter != nil {
hsh["filter"] = filter.Source()
}
// Weight needs to be serialized on this level.
if weight := q.scoreFuncs[i].GetWeight(); weight != nil {
hsh["weight"] = weight
}
// Serialize the score function
hsh[q.scoreFuncs[i].Name()] = q.scoreFuncs[i].Source()
funcs[i] = hsh
}
query["functions"] = funcs
}
if q.scoreMode != "" {
query["score_mode"] = q.scoreMode
}
if q.boostMode != "" {
query["boost_mode"] = q.boostMode
}
if q.maxBoost != nil {
query["max_boost"] = *q.maxBoost
}
if q.boost != nil {
query["boost"] = *q.boost
}
if q.minScore != nil {
query["min_score"] = *q.minScore
}
return source
}