forked from blevesearch/bleve
/
search_docid.go
93 lines (78 loc) · 2.26 KB
/
search_docid.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
// Copyright (c) 2015 Couchbase, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package searcher
import (
"github.com/blevesearch/bleve/index"
"github.com/blevesearch/bleve/search"
"github.com/blevesearch/bleve/search/scorer"
)
// DocIDSearcher returns documents matching a predefined set of identifiers.
type DocIDSearcher struct {
reader index.DocIDReader
scorer *scorer.ConstantScorer
count int
}
func NewDocIDSearcher(indexReader index.IndexReader, ids []string, boost float64,
options search.SearcherOptions) (searcher *DocIDSearcher, err error) {
reader, err := indexReader.DocIDReaderOnly(ids)
if err != nil {
return nil, err
}
scorer := scorer.NewConstantScorer(1.0, boost, options)
return &DocIDSearcher{
scorer: scorer,
reader: reader,
count: len(ids),
}, nil
}
func (s *DocIDSearcher) Count() uint64 {
return uint64(s.count)
}
func (s *DocIDSearcher) Weight() float64 {
return s.scorer.Weight()
}
func (s *DocIDSearcher) SetQueryNorm(qnorm float64) {
s.scorer.SetQueryNorm(qnorm)
}
func (s *DocIDSearcher) Next(ctx *search.SearchContext) (*search.DocumentMatch, error) {
docidMatch, err := s.reader.Next()
if err != nil {
return nil, err
}
if docidMatch == nil {
return nil, nil
}
docMatch := s.scorer.Score(ctx, docidMatch)
return docMatch, nil
}
func (s *DocIDSearcher) Advance(ctx *search.SearchContext, ID index.IndexInternalID) (*search.DocumentMatch, error) {
docidMatch, err := s.reader.Advance(ID)
if err != nil {
return nil, err
}
if docidMatch == nil {
return nil, nil
}
docMatch := s.scorer.Score(ctx, docidMatch)
return docMatch, nil
}
func (s *DocIDSearcher) Close() error {
return s.reader.Close()
}
func (s *DocIDSearcher) Min() int {
return 0
}
func (s *DocIDSearcher) DocumentMatchPoolSize() int {
return 1
}