63 lines
1.7 KiB
Go
63 lines
1.7 KiB
Go
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// Copyright (c) 2014 Couchbase, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package query
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import (
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"github.com/blevesearch/bleve/index"
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"github.com/blevesearch/bleve/mapping"
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"github.com/blevesearch/bleve/search"
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"github.com/blevesearch/bleve/search/searcher"
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)
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type PrefixQuery struct {
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Prefix string `json:"prefix"`
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FieldVal string `json:"field,omitempty"`
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BoostVal *Boost `json:"boost,omitempty"`
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}
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// NewPrefixQuery creates a new Query which finds
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// documents containing terms that start with the
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// specified prefix.
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func NewPrefixQuery(prefix string) *PrefixQuery {
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return &PrefixQuery{
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Prefix: prefix,
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}
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}
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func (q *PrefixQuery) SetBoost(b float64) {
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boost := Boost(b)
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q.BoostVal = &boost
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}
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func (q *PrefixQuery) Boost() float64 {
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return q.BoostVal.Value()
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}
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func (q *PrefixQuery) SetField(f string) {
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q.FieldVal = f
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}
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func (q *PrefixQuery) Field() string {
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return q.FieldVal
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}
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func (q *PrefixQuery) Searcher(i index.IndexReader, m mapping.IndexMapping, options search.SearcherOptions) (search.Searcher, error) {
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field := q.FieldVal
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if q.FieldVal == "" {
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field = m.DefaultSearchField()
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}
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return searcher.NewTermPrefixSearcher(i, q.Prefix, field, q.BoostVal.Value(), options)
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}
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