org.apache.druid.query.movingaverage.averagers.DoubleMeanAverager Maven / Gradle / Ivy
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* distributed with this work for additional information
* regarding copyright ownership. The ASF 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
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package org.apache.druid.query.movingaverage.averagers;
public class DoubleMeanAverager extends BaseAverager
{
public DoubleMeanAverager(int numBuckets, String name, String fieldName, int cycleSize)
{
super(Number.class, numBuckets, name, fieldName, cycleSize);
}
@Override
protected Double computeResult()
{
double result = 0.0;
int validBuckets = 0;
for (int i = 0; i < numBuckets; i += cycleSize) {
if (buckets[(i + startFrom) % numBuckets] != null) {
result += (buckets[(i + startFrom) % numBuckets]).doubleValue();
} else {
result += 0.0;
}
validBuckets++;
}
startFrom++;
return result / validBuckets;
}
}