61 lines
1.6 KiB
Go
61 lines
1.6 KiB
Go
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// 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/search"
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)
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type PhraseQuery struct {
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Terms []*TermQuery `json:"terms"`
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BoostVal float64 `json:"boost,omitempty"`
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}
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func NewPhraseQuery(terms []*TermQuery) *PhraseQuery {
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return &PhraseQuery{
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Terms: terms,
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BoostVal: 1.0,
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}
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}
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func (q *PhraseQuery) Boost() float64 {
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return q.BoostVal
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}
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func (q *PhraseQuery) SetBoost(b float64) *PhraseQuery {
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q.BoostVal = b
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return q
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}
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func (q *PhraseQuery) Searcher(i *indexImpl, explain bool) (search.Searcher, error) {
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terms := make([]string, len(q.Terms))
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conjuncts := make([]Query, len(q.Terms))
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for i, term := range q.Terms {
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conjuncts[i] = term
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terms[i] = term.Term
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}
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conjunctionQuery := NewConjunctionQuery(conjuncts)
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conjunctionSearcher, err := conjunctionQuery.Searcher(i, explain)
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if err != nil {
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return nil, err
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}
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return search.NewPhraseSearcher(i.i, conjunctionSearcher, terms)
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}
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func (q *PhraseQuery) Validate() error {
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if q.Terms == nil {
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return fmt.Errorf("Phrase query must contain at least one term")
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}
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return nil
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}
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