org.elasticsearch.search.aggregations.metrics.percentiles.hdr.HDRPercentileRanksAggregator Maven / Gradle / Ivy
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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.percentiles.hdr;
import org.HdrHistogram.DoubleHistogram;
import org.elasticsearch.search.DocValueFormat;
import org.elasticsearch.search.aggregations.Aggregator;
import org.elasticsearch.search.aggregations.InternalAggregation;
import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
import org.elasticsearch.search.aggregations.support.AggregationContext;
import org.elasticsearch.search.aggregations.support.ValuesSource.Numeric;
import java.io.IOException;
import java.util.List;
import java.util.Map;
/**
*
*/
public class HDRPercentileRanksAggregator extends AbstractHDRPercentilesAggregator {
public HDRPercentileRanksAggregator(String name, Numeric valuesSource, AggregationContext context, Aggregator parent,
double[] percents, int numberOfSignificantValueDigits, boolean keyed, DocValueFormat format,
List pipelineAggregators, Map metaData) throws IOException {
super(name, valuesSource, context, parent, percents, numberOfSignificantValueDigits, keyed, format, pipelineAggregators,
metaData);
}
@Override
public InternalAggregation buildAggregation(long owningBucketOrdinal) {
DoubleHistogram state = getState(owningBucketOrdinal);
if (state == null) {
return buildEmptyAggregation();
} else {
return new InternalHDRPercentileRanks(name, keys, state, keyed, format, pipelineAggregators(), metaData());
}
}
@Override
public InternalAggregation buildEmptyAggregation() {
DoubleHistogram state;
state = new DoubleHistogram(numberOfSignificantValueDigits);
state.setAutoResize(true);
return new InternalHDRPercentileRanks(name, keys, state,
keyed, format, pipelineAggregators(), metaData());
}
@Override
public double metric(String name, long bucketOrd) {
DoubleHistogram state = getState(bucketOrd);
if (state == null) {
return Double.NaN;
} else {
return InternalHDRPercentileRanks.percentileRank(state, Double.valueOf(name));
}
}
}