Package com.github.rlacher.sortbench.processing

Class MedianAggregator

java.lang.Object

com.github.rlacher.sortbench.processing.MedianAggregator

All Implemented Interfaces:

Function<List<BenchmarkResult>,Double>

public class MedianAggregator
extends Object
implements Function<List<BenchmarkResult>,Double>

Aggregates a list of BenchmarkResult instances to calculate the median value.

This aggregator aims to provide a more robust and representative summary of benchmark results by using the median, which is less susceptible to outliers caused by factors like garbage collection or JVM optimisations.

Constructor Summary

Constructors

Constructor	Description
MedianAggregator()	Constructs a default instance of MedianAggregator.

Method Summary

Modifier and Type	Method	Description
Double	apply(List<BenchmarkResult> results)	Applies the aggregation logic to calculate the median of the benchmark result values.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.function.Function

andThen, compose

Constructor Details

MedianAggregator

public MedianAggregator()

Constructs a default instance of MedianAggregator. This constructor performs no custom initialisation.

Method Details

apply

public Double apply(List<BenchmarkResult> results)

Applies the aggregation logic to calculate the median of the benchmark result values.

Specified by:

apply in interface Function<List<BenchmarkResult>,Double>

Parameters:

results - The list of BenchmarkResult instances to aggregate. Must not be null.

Returns:

The median value of the benchmark results.

Throws:

IllegalArgumentException - If the provided list of benchmark results is null.

IllegalArgumentException - If the stream of values derived from the results is empty.