forked from blevesearch/bleve
/
analysis.go
76 lines (62 loc) · 2.69 KB
/
analysis.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
// 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 upside_down
import (
"github.com/blevesearch/bleve/document"
"github.com/blevesearch/bleve/index"
)
func (udc *UpsideDownCouch) Analyze(d *document.Document) *index.AnalysisResult {
rv := &index.AnalysisResult{
DocID: d.ID,
Rows: make([]index.IndexRow, 0, 100),
}
// track our back index entries
backIndexTermEntries := make([]*BackIndexTermEntry, 0)
backIndexStoredEntries := make([]*BackIndexStoreEntry, 0)
for _, field := range d.Fields {
fieldIndex, newFieldRow := udc.fieldIndexOrNewRow(field.Name())
if newFieldRow != nil {
rv.Rows = append(rv.Rows, newFieldRow)
}
if field.Options().IsIndexed() {
fieldLength, tokenFreqs := field.Analyze()
// see if any of the composite fields need this
for _, compositeField := range d.CompositeFields {
compositeField.Compose(field.Name(), fieldLength, tokenFreqs)
}
// encode this field
indexRows, indexBackIndexTermEntries := udc.indexField(d.ID, field, fieldIndex, fieldLength, tokenFreqs)
rv.Rows = append(rv.Rows, indexRows...)
backIndexTermEntries = append(backIndexTermEntries, indexBackIndexTermEntries...)
}
if field.Options().IsStored() {
storeRows, indexBackIndexStoreEntries := udc.storeField(d.ID, field, fieldIndex)
rv.Rows = append(rv.Rows, storeRows...)
backIndexStoredEntries = append(backIndexStoredEntries, indexBackIndexStoreEntries...)
}
}
// now index the composite fields
for _, compositeField := range d.CompositeFields {
fieldIndex, newFieldRow := udc.fieldIndexOrNewRow(compositeField.Name())
if newFieldRow != nil {
rv.Rows = append(rv.Rows, newFieldRow)
}
if compositeField.Options().IsIndexed() {
fieldLength, tokenFreqs := compositeField.Analyze()
// encode this field
indexRows, indexBackIndexTermEntries := udc.indexField(d.ID, compositeField, fieldIndex, fieldLength, tokenFreqs)
rv.Rows = append(rv.Rows, indexRows...)
backIndexTermEntries = append(backIndexTermEntries, indexBackIndexTermEntries...)
}
}
// build the back index row
backIndexRow := NewBackIndexRow(d.ID, backIndexTermEntries, backIndexStoredEntries)
rv.Rows = append(rv.Rows, backIndexRow)
return rv
}