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Elasticsearch subproject :server
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
package org.elasticsearch.search.aggregations.pipeline;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.search.DocValueFormat;
import org.elasticsearch.search.aggregations.InternalAggregation;
import org.elasticsearch.search.aggregations.pipeline.BucketHelpers.GapPolicy;
import java.io.IOException;
import java.util.Map;
public class StatsBucketPipelineAggregator extends BucketMetricsPipelineAggregator {
private double sum = 0;
private long count = 0;
private double min = Double.POSITIVE_INFINITY;
private double max = Double.NEGATIVE_INFINITY;
StatsBucketPipelineAggregator(String name, String[] bucketsPaths, GapPolicy gapPolicy, DocValueFormat formatter,
Map metadata) {
super(name, bucketsPaths, gapPolicy, formatter, metadata);
}
public StatsBucketPipelineAggregator(StreamInput in) throws IOException {
super(in);
}
@Override
public String getWriteableName() {
return StatsBucketPipelineAggregationBuilder.NAME;
}
@Override
protected void preCollection() {
sum = 0;
count = 0;
min = Double.POSITIVE_INFINITY;
max = Double.NEGATIVE_INFINITY;
}
@Override
protected void collectBucketValue(String bucketKey, Double bucketValue) {
sum += bucketValue;
min = Math.min(min, bucketValue);
max = Math.max(max, bucketValue);
count += 1;
}
@Override
protected InternalAggregation buildAggregation(Map metadata) {
return new InternalStatsBucket(name(), count, sum, min, max, format, metadata);
}
}