/*
* Licensed to Elastic Search and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Elastic Search 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
* under the License.
*/
package org.elasticsearch.index.search.geo;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.search.DocIdSet;
import org.apache.lucene.search.Filter;
import org.apache.lucene.util.NumericUtils;
import org.elasticsearch.common.lucene.docset.GetDocSet;
import org.elasticsearch.common.unit.DistanceUnit;
import org.elasticsearch.index.cache.field.data.FieldDataCache;
import org.elasticsearch.index.mapper.geo.GeoPointFieldData;
import org.elasticsearch.index.mapper.geo.GeoPointFieldDataType;
import java.io.IOException;
/**
* @author kimchy (shay.banon)
*/
public class GeoDistanceRangeFilter extends Filter {
private final double lat;
private final double lon;
private final double inclusiveLowerPoint; // in miles
private final double inclusiveUpperPoint; // in miles
private final GeoDistance geoDistance;
private final String fieldName;
private final FieldDataCache fieldDataCache;
public GeoDistanceRangeFilter(double lat, double lon, Double lowerVal, Double upperVal, boolean includeLower, boolean includeUpper, GeoDistance geoDistance, String fieldName, FieldDataCache fieldDataCache) {
this.lat = lat;
this.lon = lon;
this.geoDistance = geoDistance;
this.fieldName = fieldName;
this.fieldDataCache = fieldDataCache;
if (lowerVal != null) {
double f = lowerVal.doubleValue();
long i = NumericUtils.doubleToSortableLong(f);
inclusiveLowerPoint = NumericUtils.sortableLongToDouble(includeLower ? i : (i + 1L));
} else {
inclusiveLowerPoint = Double.NEGATIVE_INFINITY;
}
if (upperVal != null) {
double f = upperVal.doubleValue();
long i = NumericUtils.doubleToSortableLong(f);
inclusiveUpperPoint = NumericUtils.sortableLongToDouble(includeUpper ? i : (i - 1L));
} else {
inclusiveUpperPoint = Double.POSITIVE_INFINITY;
}
}
public double lat() {
return lat;
}
public double lon() {
return lon;
}
public GeoDistance geoDistance() {
return geoDistance;
}
public String fieldName() {
return fieldName;
}
@Override public DocIdSet getDocIdSet(IndexReader reader) throws IOException {
final GeoPointFieldData fieldData = (GeoPointFieldData) fieldDataCache.cache(GeoPointFieldDataType.TYPE, reader, fieldName);
return new GetDocSet(reader.maxDoc()) {
@Override public boolean isCacheable() {
// not cacheable for several reasons:
// 1. It is only relevant when _cache is set to true, and then, we really want to create in mem bitset
// 2. Its already fast without in mem bitset, since it works with field data
return false;
}
@Override public boolean get(int doc) throws IOException {
if (!fieldData.hasValue(doc)) {
return false;
}
if (fieldData.multiValued()) {
double[] lats = fieldData.latValues(doc);
double[] lons = fieldData.lonValues(doc);
for (int i = 0; i < lats.length; i++) {
double d = geoDistance.calculate(lat, lon, lats[i], lons[i], DistanceUnit.MILES);
if (d >= inclusiveLowerPoint && d <= inclusiveUpperPoint) {
return true;
}
}
return false;
} else {
double d = geoDistance.calculate(lat, lon, fieldData.latValue(doc), fieldData.lonValue(doc), DistanceUnit.MILES);
if (d >= inclusiveLowerPoint && d <= inclusiveUpperPoint) {
return true;
}
return false;
}
}
};
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
GeoDistanceRangeFilter filter = (GeoDistanceRangeFilter) o;
if (Double.compare(filter.inclusiveLowerPoint, inclusiveLowerPoint) != 0) return false;
if (Double.compare(filter.inclusiveUpperPoint, inclusiveUpperPoint) != 0) return false;
if (Double.compare(filter.lat, lat) != 0) return false;
if (Double.compare(filter.lon, lon) != 0) return false;
if (fieldName != null ? !fieldName.equals(filter.fieldName) : filter.fieldName != null) return false;
if (geoDistance != filter.geoDistance) return false;
return true;
}
@Override
public int hashCode() {
int result;
long temp;
temp = lat != +0.0d ? Double.doubleToLongBits(lat) : 0L;
result = (int) (temp ^ (temp >>> 32));
temp = lon != +0.0d ? Double.doubleToLongBits(lon) : 0L;
result = 31 * result + (int) (temp ^ (temp >>> 32));
temp = inclusiveLowerPoint != +0.0d ? Double.doubleToLongBits(inclusiveLowerPoint) : 0L;
result = 31 * result + (int) (temp ^ (temp >>> 32));
temp = inclusiveUpperPoint != +0.0d ? Double.doubleToLongBits(inclusiveUpperPoint) : 0L;
result = 31 * result + (int) (temp ^ (temp >>> 32));
result = 31 * result + (geoDistance != null ? geoDistance.hashCode() : 0);
result = 31 * result + (fieldName != null ? fieldName.hashCode() : 0);
return result;
}
}