org.terracotta.statistics

Interface SourceStatistic<T extends ChainedObserver>

Type Parameters:

T - Supported derived observer type

All Known Subinterfaces:

OperationStatistic<T>

All Known Implementing Classes:

AbstractOperationStatistic, AbstractSourceStatistic, MappedOperationStatistic, OperationResultFilter, OperationResultSampler, StatisticMapper, ZeroOperationStatistic

public interface SourceStatistic<T extends ChainedObserver>

Source statistic implementations support derived statistics.

Derived statistics can be registered and will then receive the relevant observer calls to update their status.

Method Summary

Modifier and Type	Method and Description
void	addDerivedStatistic(T derived) Register the given Observer to be called by this SourceStatistic
Collection<T>	getDerivedStatistics() Retrieve all registered statistics.
void	removeDerivedStatistic(T derived) Remove the given registered Observer from this SourceStatistic.

Method Detail

addDerivedStatistic

void addDerivedStatistic(T derived)

Register the given Observer to be called by this SourceStatistic

Parameters:

derived - statistic to be registered

removeDerivedStatistic

void removeDerivedStatistic(T derived)

Remove the given registered Observer from this SourceStatistic.

Parameters:

derived - statistic to be removed

getDerivedStatistics

Collection<T> getDerivedStatistics()

Retrieve all registered statistics.

Returns:

an unmodifiable collection of all derived statistics