org.elasticsearch.index.fielddata.fieldcomparator.GeoDistanceComparatorSource Maven / Gradle / Ivy
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* 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
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package org.elasticsearch.index.fielddata.fieldcomparator;
import org.apache.lucene.search.FieldComparator;
import org.apache.lucene.search.SortField;
import org.elasticsearch.common.geo.GeoDistance;
import org.elasticsearch.common.unit.DistanceUnit;
import org.elasticsearch.index.fielddata.IndexFieldData;
import org.elasticsearch.index.fielddata.IndexGeoPointFieldData;
import java.io.IOException;
/**
*/
public class GeoDistanceComparatorSource extends IndexFieldData.XFieldComparatorSource {
private final IndexGeoPointFieldData indexFieldData;
private final double lat;
private final double lon;
private final DistanceUnit unit;
private final GeoDistance geoDistance;
private final SortMode sortMode;
public GeoDistanceComparatorSource(IndexGeoPointFieldData indexFieldData, double lat, double lon, DistanceUnit unit, GeoDistance geoDistance, SortMode sortMode) {
this.indexFieldData = indexFieldData;
this.lat = lat;
this.lon = lon;
this.unit = unit;
this.geoDistance = geoDistance;
this.sortMode = sortMode;
}
@Override
public SortField.Type reducedType() {
return SortField.Type.DOUBLE;
}
@Override
public FieldComparator newComparator(String fieldname, int numHits, int sortPos, boolean reversed) throws IOException {
assert indexFieldData.getFieldNames().indexName().equals(fieldname);
return new GeoDistanceComparator(numHits, indexFieldData, lat, lon, unit, geoDistance, sortMode);
}
}