6507e31787
also added flag for bounding box searcher to optionally not check boundaries. this is useful when other searchers are going to check every point anyway by some other criteria.
94 lines
2.7 KiB
Go
94 lines
2.7 KiB
Go
// Copyright (c) 2017 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 GeoPoint struct {
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Lon float64 `json:"lon,omitempty"`
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Lat float64 `json:"lat,omitempty"`
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}
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type GeoBoundingBoxQuery struct {
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TopLeft *GeoPoint `json:"top_left,omitempty"`
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BottomRight *GeoPoint `json:"bottom_right,omitempty"`
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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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func NewGeoBoundingBoxQuery(topLeftLon, topLeftLat, bottomRightLon, bottomRightLat float64) *GeoBoundingBoxQuery {
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return &GeoBoundingBoxQuery{
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TopLeft: &GeoPoint{
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Lon: topLeftLon,
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Lat: topLeftLat,
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},
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BottomRight: &GeoPoint{
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Lon: bottomRightLon,
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Lat: bottomRightLat,
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},
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}
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}
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func (q *GeoBoundingBoxQuery) 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 *GeoBoundingBoxQuery) Boost() float64 {
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return q.BoostVal.Value()
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}
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func (q *GeoBoundingBoxQuery) SetField(f string) {
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q.FieldVal = f
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}
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func (q *GeoBoundingBoxQuery) Field() string {
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return q.FieldVal
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}
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func (q *GeoBoundingBoxQuery) 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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if q.BottomRight.Lon < q.TopLeft.Lon {
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// cross date line, rewrite as two parts
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leftSearcher, err := searcher.NewGeoBoundingBoxSearcher(i, -180, q.BottomRight.Lat, q.BottomRight.Lon, q.TopLeft.Lat, field, q.BoostVal.Value(), options, true)
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if err != nil {
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return nil, err
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}
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rightSearcher, err := searcher.NewGeoBoundingBoxSearcher(i, q.TopLeft.Lon, q.BottomRight.Lat, 180, q.TopLeft.Lat, field, q.BoostVal.Value(), options, true)
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if err != nil {
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_ = leftSearcher.Close()
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return nil, err
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}
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return searcher.NewDisjunctionSearcher(i, []search.Searcher{leftSearcher, rightSearcher}, 0, options)
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}
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return searcher.NewGeoBoundingBoxSearcher(i, q.TopLeft.Lon, q.BottomRight.Lat, q.BottomRight.Lon, q.TopLeft.Lat, field, q.BoostVal.Value(), options, true)
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}
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func (q *GeoBoundingBoxQuery) Validate() error {
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return nil
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}
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