mirror of
https://github.com/go-gitea/gitea
synced 2024-11-09 11:44:27 +00:00
b0f7457d9e
* Improve issue indexer * Fix new issue sqlite bug * Different test indexer paths for each db * Add integration indexer paths to make clean
114 lines
3.1 KiB
Go
Vendored
114 lines
3.1 KiB
Go
Vendored
// Copyright (c) 2014 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 query
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/blevesearch/bleve/analysis"
|
|
"github.com/blevesearch/bleve/index"
|
|
"github.com/blevesearch/bleve/mapping"
|
|
"github.com/blevesearch/bleve/search"
|
|
)
|
|
|
|
type MatchPhraseQuery struct {
|
|
MatchPhrase string `json:"match_phrase"`
|
|
FieldVal string `json:"field,omitempty"`
|
|
Analyzer string `json:"analyzer,omitempty"`
|
|
BoostVal *Boost `json:"boost,omitempty"`
|
|
}
|
|
|
|
// NewMatchPhraseQuery creates a new Query object
|
|
// for matching phrases in the index.
|
|
// An Analyzer is chosen based on the field.
|
|
// Input text is analyzed using this analyzer.
|
|
// Token terms resulting from this analysis are
|
|
// used to build a search phrase. Result documents
|
|
// must match this phrase. Queried field must have been indexed with
|
|
// IncludeTermVectors set to true.
|
|
func NewMatchPhraseQuery(matchPhrase string) *MatchPhraseQuery {
|
|
return &MatchPhraseQuery{
|
|
MatchPhrase: matchPhrase,
|
|
}
|
|
}
|
|
|
|
func (q *MatchPhraseQuery) SetBoost(b float64) {
|
|
boost := Boost(b)
|
|
q.BoostVal = &boost
|
|
}
|
|
|
|
func (q *MatchPhraseQuery) Boost() float64 {
|
|
return q.BoostVal.Value()
|
|
}
|
|
|
|
func (q *MatchPhraseQuery) SetField(f string) {
|
|
q.FieldVal = f
|
|
}
|
|
|
|
func (q *MatchPhraseQuery) Field() string {
|
|
return q.FieldVal
|
|
}
|
|
|
|
func (q *MatchPhraseQuery) Searcher(i index.IndexReader, m mapping.IndexMapping, options search.SearcherOptions) (search.Searcher, error) {
|
|
field := q.FieldVal
|
|
if q.FieldVal == "" {
|
|
field = m.DefaultSearchField()
|
|
}
|
|
|
|
analyzerName := ""
|
|
if q.Analyzer != "" {
|
|
analyzerName = q.Analyzer
|
|
} else {
|
|
analyzerName = m.AnalyzerNameForPath(field)
|
|
}
|
|
analyzer := m.AnalyzerNamed(analyzerName)
|
|
if analyzer == nil {
|
|
return nil, fmt.Errorf("no analyzer named '%s' registered", q.Analyzer)
|
|
}
|
|
|
|
tokens := analyzer.Analyze([]byte(q.MatchPhrase))
|
|
if len(tokens) > 0 {
|
|
phrase := tokenStreamToPhrase(tokens)
|
|
phraseQuery := NewMultiPhraseQuery(phrase, field)
|
|
phraseQuery.SetBoost(q.BoostVal.Value())
|
|
return phraseQuery.Searcher(i, m, options)
|
|
}
|
|
noneQuery := NewMatchNoneQuery()
|
|
return noneQuery.Searcher(i, m, options)
|
|
}
|
|
|
|
func tokenStreamToPhrase(tokens analysis.TokenStream) [][]string {
|
|
firstPosition := int(^uint(0) >> 1)
|
|
lastPosition := 0
|
|
for _, token := range tokens {
|
|
if token.Position < firstPosition {
|
|
firstPosition = token.Position
|
|
}
|
|
if token.Position > lastPosition {
|
|
lastPosition = token.Position
|
|
}
|
|
}
|
|
phraseLen := lastPosition - firstPosition + 1
|
|
if phraseLen > 0 {
|
|
rv := make([][]string, phraseLen)
|
|
for _, token := range tokens {
|
|
pos := token.Position - firstPosition
|
|
rv[pos] = append(rv[pos], string(token.Term))
|
|
}
|
|
return rv
|
|
}
|
|
return nil
|
|
}
|