-
Notifications
You must be signed in to change notification settings - Fork 455
/
negation.go
79 lines (67 loc) · 2.38 KB
/
negation.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
// Copyright (c) 2018 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package query
import (
"fmt"
"github.com/m3db/m3/src/m3ninx/generated/proto/querypb"
"github.com/m3db/m3/src/m3ninx/search"
"github.com/m3db/m3/src/m3ninx/search/searcher"
)
// NegationQuery finds document which do not match a given query.
type NegationQuery struct {
query search.Query
}
// NewNegationQuery constructs a new NegationQuery for the given query.
func NewNegationQuery(q search.Query) search.Query {
return &NegationQuery{
query: q,
}
}
// Searcher returns a searcher over the provided readers.
func (q *NegationQuery) Searcher() (search.Searcher, error) {
s, err := q.query.Searcher()
if err != nil {
return nil, err
}
return searcher.NewNegationSearcher(s)
}
// Equal reports whether q is equivalent to o.
func (q *NegationQuery) Equal(o search.Query) bool {
o, ok := singular(o)
if !ok {
return false
}
inner, ok := o.(*NegationQuery)
if !ok {
return false
}
return q.query.Equal(inner.query)
}
// ToProto returns the Protobuf query struct corresponding to the term query.
func (q *NegationQuery) ToProto() *querypb.Query {
inner := q.query.ToProto()
qry := querypb.NegationQuery{Query: inner}
return &querypb.Query{
Query: &querypb.Query_Negation{Negation: &qry},
}
}
func (q *NegationQuery) String() string {
return fmt.Sprintf("negation(%s)", q.query)
}