76 lines
1.9 KiB
Go
76 lines
1.9 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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"regexp"
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"github.com/blevesearch/bleve/index"
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"github.com/blevesearch/bleve/search"
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"github.com/blevesearch/bleve/search/searchers"
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)
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type regexpQuery struct {
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Regexp string `json:"regexp"`
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FieldVal string `json:"field,omitempty"`
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BoostVal float64 `json:"boost,omitempty"`
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compiled *regexp.Regexp
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}
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// NewRegexpQuery creates a new Query which finds
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// documents containing terms that match the
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// specified regular expression.
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func NewRegexpQuery(regexp string) *regexpQuery {
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return ®expQuery{
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Regexp: regexp,
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BoostVal: 1.0,
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}
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}
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func (q *regexpQuery) Boost() float64 {
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return q.BoostVal
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}
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func (q *regexpQuery) SetBoost(b float64) Query {
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q.BoostVal = b
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return q
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}
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func (q *regexpQuery) Field() string {
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return q.FieldVal
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}
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func (q *regexpQuery) SetField(f string) Query {
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q.FieldVal = f
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return q
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}
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func (q *regexpQuery) Searcher(i index.IndexReader, m *IndexMapping, explain bool) (search.Searcher, error) {
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field := q.FieldVal
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if q.FieldVal == "" {
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field = m.DefaultField
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}
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if q.compiled == nil {
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var err error
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q.compiled, err = regexp.Compile(q.Regexp)
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if err != nil {
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return nil, err
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}
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}
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return searchers.NewRegexpSearcher(i, q.compiled, field, q.BoostVal, explain)
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}
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func (q *regexpQuery) Validate() error {
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var err error
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q.compiled, err = regexp.Compile(q.Regexp)
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return err
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}
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