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- // Copyright (c) 2019 Couchbase, Inc.
- //
- // Licensed under the Apache License, Version 2.0 (the "License");
- // you may not use this file except in compliance with the License.
- // You may obtain a copy of the License at
- //
- // http://www.apache.org/licenses/LICENSE-2.0
- //
- // Unless required by applicable law or agreed to in writing, software
- // distributed under the License is distributed on an "AS IS" BASIS,
- // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- // See the License for the specific language governing permissions and
- // limitations under the License.
-
- package query
-
- import (
- "encoding/json"
- "fmt"
-
- "github.com/blevesearch/bleve/geo"
- "github.com/blevesearch/bleve/index"
- "github.com/blevesearch/bleve/mapping"
- "github.com/blevesearch/bleve/search"
- "github.com/blevesearch/bleve/search/searcher"
- )
-
- type GeoBoundingPolygonQuery struct {
- Points []geo.Point `json:"polygon_points"`
- FieldVal string `json:"field,omitempty"`
- BoostVal *Boost `json:"boost,omitempty"`
- }
-
- func NewGeoBoundingPolygonQuery(points []geo.Point) *GeoBoundingPolygonQuery {
- return &GeoBoundingPolygonQuery{
- Points: points}
- }
-
- func (q *GeoBoundingPolygonQuery) SetBoost(b float64) {
- boost := Boost(b)
- q.BoostVal = &boost
- }
-
- func (q *GeoBoundingPolygonQuery) Boost() float64 {
- return q.BoostVal.Value()
- }
-
- func (q *GeoBoundingPolygonQuery) SetField(f string) {
- q.FieldVal = f
- }
-
- func (q *GeoBoundingPolygonQuery) Field() string {
- return q.FieldVal
- }
-
- func (q *GeoBoundingPolygonQuery) Searcher(i index.IndexReader,
- m mapping.IndexMapping, options search.SearcherOptions) (search.Searcher, error) {
- field := q.FieldVal
- if q.FieldVal == "" {
- field = m.DefaultSearchField()
- }
-
- return searcher.NewGeoBoundedPolygonSearcher(i, q.Points, field, q.BoostVal.Value(), options)
- }
-
- func (q *GeoBoundingPolygonQuery) Validate() error {
- return nil
- }
-
- func (q *GeoBoundingPolygonQuery) UnmarshalJSON(data []byte) error {
- tmp := struct {
- Points []interface{} `json:"polygon_points"`
- FieldVal string `json:"field,omitempty"`
- BoostVal *Boost `json:"boost,omitempty"`
- }{}
- err := json.Unmarshal(data, &tmp)
- if err != nil {
- return err
- }
-
- q.Points = make([]geo.Point, 0, len(tmp.Points))
- for _, i := range tmp.Points {
- // now use our generic point parsing code from the geo package
- lon, lat, found := geo.ExtractGeoPoint(i)
- if !found {
- return fmt.Errorf("geo polygon point: %v is not in a valid format", i)
- }
- q.Points = append(q.Points, geo.Point{Lon: lon, Lat: lat})
- }
-
- q.FieldVal = tmp.FieldVal
- q.BoostVal = tmp.BoostVal
- return nil
- }
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