1//  Copyright (c) 2014 Couchbase, Inc.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// 		http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15package query
16
17import (
18	"github.com/blevesearch/bleve/index"
19	"github.com/blevesearch/bleve/mapping"
20	"github.com/blevesearch/bleve/search"
21	"github.com/blevesearch/bleve/search/searcher"
22)
23
24type TermQuery struct {
25	Term     string `json:"term"`
26	FieldVal string `json:"field,omitempty"`
27	BoostVal *Boost `json:"boost,omitempty"`
28}
29
30// NewTermQuery creates a new Query for finding an
31// exact term match in the index.
32func NewTermQuery(term string) *TermQuery {
33	return &TermQuery{
34		Term: term,
35	}
36}
37
38func (q *TermQuery) SetBoost(b float64) {
39	boost := Boost(b)
40	q.BoostVal = &boost
41}
42
43func (q *TermQuery) Boost() float64 {
44	return q.BoostVal.Value()
45}
46
47func (q *TermQuery) SetField(f string) {
48	q.FieldVal = f
49}
50
51func (q *TermQuery) Field() string {
52	return q.FieldVal
53}
54
55func (q *TermQuery) Searcher(i index.IndexReader, m mapping.IndexMapping, options search.SearcherOptions) (search.Searcher, error) {
56	field := q.FieldVal
57	if q.FieldVal == "" {
58		field = m.DefaultSearchField()
59	}
60	return searcher.NewTermSearcher(i, q.Term, field, q.BoostVal.Value(), options)
61}
62