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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
* under the License.
*/
package org.elasticsearch.search.aggregations.metrics.geobounds;
import org.apache.lucene.index.LeafReaderContext;
import org.elasticsearch.common.ParseField;
import org.elasticsearch.common.geo.GeoPoint;
import org.elasticsearch.common.lease.Releasables;
import org.elasticsearch.common.util.BigArrays;
import org.elasticsearch.common.util.DoubleArray;
import org.elasticsearch.index.fielddata.MultiGeoPointValues;
import org.elasticsearch.search.aggregations.Aggregator;
import org.elasticsearch.search.aggregations.InternalAggregation;
import org.elasticsearch.search.aggregations.LeafBucketCollector;
import org.elasticsearch.search.aggregations.LeafBucketCollectorBase;
import org.elasticsearch.search.aggregations.metrics.MetricsAggregator;
import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
import org.elasticsearch.search.aggregations.support.ValuesSource;
import org.elasticsearch.search.internal.SearchContext;
import java.io.IOException;
import java.util.List;
import java.util.Map;
public final class GeoBoundsAggregator extends MetricsAggregator {
static final ParseField WRAP_LONGITUDE_FIELD = new ParseField("wrap_longitude");
private final ValuesSource.GeoPoint valuesSource;
private final boolean wrapLongitude;
DoubleArray tops;
DoubleArray bottoms;
DoubleArray posLefts;
DoubleArray posRights;
DoubleArray negLefts;
DoubleArray negRights;
protected GeoBoundsAggregator(String name, SearchContext aggregationContext, Aggregator parent,
ValuesSource.GeoPoint valuesSource, boolean wrapLongitude, List<PipelineAggregator> pipelineAggregators,
Map<String, Object> metaData) throws IOException {
super(name, aggregationContext, parent, pipelineAggregators, metaData);
this.valuesSource = valuesSource;
this.wrapLongitude = wrapLongitude;
if (valuesSource != null) {
final BigArrays bigArrays = context.bigArrays();
tops = bigArrays.newDoubleArray(1, false);
tops.fill(0, tops.size(), Double.NEGATIVE_INFINITY);
bottoms = bigArrays.newDoubleArray(1, false);
bottoms.fill(0, bottoms.size(), Double.POSITIVE_INFINITY);
posLefts = bigArrays.newDoubleArray(1, false);
posLefts.fill(0, posLefts.size(), Double.POSITIVE_INFINITY);
posRights = bigArrays.newDoubleArray(1, false);
posRights.fill(0, posRights.size(), Double.NEGATIVE_INFINITY);
negLefts = bigArrays.newDoubleArray(1, false);
negLefts.fill(0, negLefts.size(), Double.POSITIVE_INFINITY);
negRights = bigArrays.newDoubleArray(1, false);
negRights.fill(0, negRights.size(), Double.NEGATIVE_INFINITY);
}
}
@Override
public LeafBucketCollector getLeafCollector(LeafReaderContext ctx,
LeafBucketCollector sub) {
if (valuesSource == null) {
return LeafBucketCollector.NO_OP_COLLECTOR;
}
final BigArrays bigArrays = context.bigArrays();
final MultiGeoPointValues values = valuesSource.geoPointValues(ctx);
return new LeafBucketCollectorBase(sub, values) {
@Override
public void collect(int doc, long bucket) throws IOException {
if (bucket >= tops.size()) {
long from = tops.size();
tops = bigArrays.grow(tops, bucket + 1);
tops.fill(from, tops.size(), Double.NEGATIVE_INFINITY);
bottoms = bigArrays.resize(bottoms, tops.size());
bottoms.fill(from, bottoms.size(), Double.POSITIVE_INFINITY);
posLefts = bigArrays.resize(posLefts, tops.size());
posLefts.fill(from, posLefts.size(), Double.POSITIVE_INFINITY);
posRights = bigArrays.resize(posRights, tops.size());
posRights.fill(from, posRights.size(), Double.NEGATIVE_INFINITY);
negLefts = bigArrays.resize(negLefts, tops.size());
negLefts.fill(from, negLefts.size(), Double.POSITIVE_INFINITY);
negRights = bigArrays.resize(negRights, tops.size());
negRights.fill(from, negRights.size(), Double.NEGATIVE_INFINITY);
}
values.setDocument(doc);
final int valuesCount = values.count();
for (int i = 0; i < valuesCount; ++i) {
GeoPoint value = values.valueAt(i);
double top = tops.get(bucket);
if (value.lat() > top) {
top = value.lat();
}
double bottom = bottoms.get(bucket);
if (value.lat() < bottom) {
bottom = value.lat();
}
double posLeft = posLefts.get(bucket);
if (value.lon() >= 0 && value.lon() < posLeft) {
posLeft = value.lon();
}
double posRight = posRights.get(bucket);
if (value.lon() >= 0 && value.lon() > posRight) {
posRight = value.lon();
}
double negLeft = negLefts.get(bucket);
if (value.lon() < 0 && value.lon() < negLeft) {
negLeft = value.lon();
}
double negRight = negRights.get(bucket);
if (value.lon() < 0 && value.lon() > negRight) {
negRight = value.lon();
}
tops.set(bucket, top);
bottoms.set(bucket, bottom);
posLefts.set(bucket, posLeft);
posRights.set(bucket, posRight);
negLefts.set(bucket, negLeft);
negRights.set(bucket, negRight);
}
}
};
}
@Override
public InternalAggregation buildAggregation(long owningBucketOrdinal) {
if (valuesSource == null) {
return buildEmptyAggregation();
}
double top = tops.get(owningBucketOrdinal);
double bottom = bottoms.get(owningBucketOrdinal);
double posLeft = posLefts.get(owningBucketOrdinal);
double posRight = posRights.get(owningBucketOrdinal);
double negLeft = negLefts.get(owningBucketOrdinal);
double negRight = negRights.get(owningBucketOrdinal);
return new InternalGeoBounds(name, top, bottom, posLeft, posRight, negLeft, negRight, wrapLongitude, pipelineAggregators(), metaData());
}
@Override
public InternalAggregation buildEmptyAggregation() {
return new InternalGeoBounds(name, Double.NEGATIVE_INFINITY, Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY,
Double.NEGATIVE_INFINITY, Double.POSITIVE_INFINITY, Double.NEGATIVE_INFINITY, wrapLongitude, pipelineAggregators(), metaData());
}
@Override
public void doClose() {
Releasables.close(tops, bottoms, posLefts, posRights, negLefts, negRights);
}
}
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