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* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you 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
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*/
package org.elasticsearch.index.search.geo;
import org.apache.lucene.search.BooleanClause.Occur;
import org.apache.lucene.search.BooleanQuery;
import org.apache.lucene.search.ConstantScoreQuery;
import org.apache.lucene.search.Query;
import org.elasticsearch.common.geo.GeoPoint;
import org.elasticsearch.index.mapper.geo.GeoPointFieldMapper;
import org.elasticsearch.index.mapper.geo.GeoPointFieldMapperLegacy;
/**
*/
public class IndexedGeoBoundingBoxQuery {
public static Query create(GeoPoint topLeft, GeoPoint bottomRight, GeoPointFieldMapperLegacy.GeoPointFieldType fieldType) {
if (!fieldType.isLatLonEnabled()) {
throw new IllegalArgumentException("lat/lon is not enabled (indexed) for field [" + fieldType.names().fullName() + "], can't use indexed filter on it");
}
//checks to see if bounding box crosses 180 degrees
if (topLeft.lon() > bottomRight.lon()) {
return westGeoBoundingBoxFilter(topLeft, bottomRight, fieldType);
} else {
return eastGeoBoundingBoxFilter(topLeft, bottomRight, fieldType);
}
}
private static Query westGeoBoundingBoxFilter(GeoPoint topLeft, GeoPoint bottomRight, GeoPointFieldMapperLegacy.GeoPointFieldType fieldType) {
BooleanQuery.Builder filter = new BooleanQuery.Builder();
filter.setMinimumNumberShouldMatch(1);
filter.add(fieldType.lonFieldType().rangeQuery(null, bottomRight.lon(), true, true), Occur.SHOULD);
filter.add(fieldType.lonFieldType().rangeQuery(topLeft.lon(), null, true, true), Occur.SHOULD);
filter.add(fieldType.latFieldType().rangeQuery(bottomRight.lat(), topLeft.lat(), true, true), Occur.MUST);
return new ConstantScoreQuery(filter.build());
}
private static Query eastGeoBoundingBoxFilter(GeoPoint topLeft, GeoPoint bottomRight, GeoPointFieldMapperLegacy.GeoPointFieldType fieldType) {
BooleanQuery.Builder filter = new BooleanQuery.Builder();
filter.add(fieldType.lonFieldType().rangeQuery(topLeft.lon(), bottomRight.lon(), true, true), Occur.MUST);
filter.add(fieldType.latFieldType().rangeQuery(bottomRight.lat(), topLeft.lat(), true, true), Occur.MUST);
return new ConstantScoreQuery(filter.build());
}
}