org.calrissian.accumulorecipes.metricsstore.ext.custom.function

Interface MetricFunction<T>

Type Parameters:

T -

All Known Implementing Classes:

MaxFunction, MinFunction, StatsFunction, SumFunction, SummaryStatsFunction

public interface MetricFunction<T>

Custom function for defining the aggregation behavior of metrics for a query.

Method Summary

Methods

Modifier and Type	Method and Description
T	deserialize(byte[] data) Deserialize the given metric.
void	merge(T value) Merges the two metrics together.
void	reset()
byte[]	serialize() Serialize the given metric
void	update(long value) Updates the original metric with the given value.

Method Detail

reset

void reset()

update

void update(long value)

Updates the original metric with the given value.

Parameters:

value -

merge

void merge(T value)

Merges the two metrics together. TODO With no iterator settings specified during compactions, this should never happen and we can use more complex iterable math functions.

Parameters:

value -

serialize

byte[] serialize()

Serialize the given metric

Returns:

deserialize

T deserialize(byte[] data)

Deserialize the given metric.

Parameters:

data -

Returns: