/*
* 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.percentiles;
import org.elasticsearch.search.aggregations.Aggregator;
import org.elasticsearch.search.aggregations.InternalAggregation;
import org.elasticsearch.search.aggregations.metrics.percentiles.tdigest.TDigestState;
import org.elasticsearch.search.aggregations.support.*;
import org.elasticsearch.search.aggregations.support.ValuesSource.Numeric;
import java.util.Map;
/**
*
*/
public class PercentilesAggregator extends AbstractPercentilesAggregator {
public PercentilesAggregator(String name, long estimatedBucketsCount, Numeric valuesSource, AggregationContext context,
Aggregator parent, double[] percents, double compression, boolean keyed, Map<String, Object> metaData) {
super(name, estimatedBucketsCount, valuesSource, context, parent, percents, compression, keyed, metaData);
}
@Override
public InternalAggregation buildAggregation(long owningBucketOrdinal) {
TDigestState state = getState(owningBucketOrdinal);
if (state == null) {
return buildEmptyAggregation();
} else {
return new InternalPercentiles(name, keys, state, keyed, getMetaData());
}
}
@Override
public double metric(String name, long bucketOrd) {
TDigestState state = getState(bucketOrd);
if (state == null) {
return Double.NaN;
} else {
return state.quantile(Double.parseDouble(name) / 100);
}
}
@Override
public InternalAggregation buildEmptyAggregation() {
return new InternalPercentiles(name, keys, new TDigestState(compression), keyed, getMetaData());
}
public static class Factory extends ValuesSourceAggregatorFactory.LeafOnly<ValuesSource.Numeric, Map<String, Object>> {
private final double[] percents;
private final double compression;
private final boolean keyed;
public Factory(String name, ValuesSourceConfig<ValuesSource.Numeric> valuesSourceConfig,
double[] percents, double compression, boolean keyed) {
super(name, InternalPercentiles.TYPE.name(), valuesSourceConfig);
this.percents = percents;
this.compression = compression;
this.keyed = keyed;
}
@Override
protected Aggregator createUnmapped(AggregationContext aggregationContext, Aggregator parent, Map<String, Object> metaData) {
return new PercentilesAggregator(name, 0, null, aggregationContext, parent, percents, compression, keyed, metaData);
}
@Override
protected Aggregator create(ValuesSource.Numeric valuesSource, long expectedBucketsCount, AggregationContext aggregationContext, Aggregator parent, Map<String, Object> metaData) {
return new PercentilesAggregator(name, expectedBucketsCount, valuesSource, aggregationContext, parent, percents, compression, keyed, metaData);
}
}
}