83 lines
2.2 KiB
Go
83 lines
2.2 KiB
Go
// Copyright (c) 2014 Couchbase, Inc.
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
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// except in compliance with the License. You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software distributed under the
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// License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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// either express or implied. See the License for the specific language governing permissions
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// and limitations under the License.
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package bleve
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import (
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"fmt"
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"github.com/couchbaselabs/bleve/analysis"
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"github.com/couchbaselabs/bleve/search"
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)
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type MatchPhraseQuery struct {
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MatchPhrase string `json:"match_phrase"`
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FieldVal string `json:"field,omitempty"`
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Analyzer string `json:"analyzer,omitempty"`
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BoostVal float64 `json:"boost,omitempty"`
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}
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func NewMatchPhraseQuery(matchPhrase string) *MatchPhraseQuery {
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return &MatchPhraseQuery{
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MatchPhrase: matchPhrase,
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BoostVal: 1.0,
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}
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}
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func (q *MatchPhraseQuery) Boost() float64 {
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return q.BoostVal
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}
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func (q *MatchPhraseQuery) SetBoost(b float64) *MatchPhraseQuery {
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q.BoostVal = b
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return q
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}
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func (q *MatchPhraseQuery) Field() string {
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return q.FieldVal
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}
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func (q *MatchPhraseQuery) SetField(f string) *MatchPhraseQuery {
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q.FieldVal = f
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return q
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}
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func (q *MatchPhraseQuery) Searcher(i *indexImpl, explain bool) (search.Searcher, error) {
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var analyzer *analysis.Analyzer
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if q.Analyzer != "" {
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analyzer = Config.Analysis.Analyzers[q.Analyzer]
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} else {
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analyzer = i.m.analyzerForPath(q.FieldVal)
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}
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if analyzer == nil {
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return nil, fmt.Errorf("no analyzer named '%s' registered", q.Analyzer)
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}
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tokens := analyzer.Analyze([]byte(q.MatchPhrase))
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if len(tokens) > 0 {
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tqs := make([]*TermQuery, len(tokens))
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for i, token := range tokens {
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tqs[i] = NewTermQuery(string(token.Term)).
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SetField(q.FieldVal).
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SetBoost(q.BoostVal)
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}
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phraseQuery := NewPhraseQuery(tqs)
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return phraseQuery.Searcher(i, explain)
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} else {
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noneQuery := NewMatchNoneQuery()
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return noneQuery.Searcher(i, explain)
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}
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}
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func (q *MatchPhraseQuery) Validate() error {
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return nil
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}
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