Package org.terracotta.statistics

Class AbstractSourceStatistic<T extends ChainedObserver>

java.lang.Object

org.terracotta.statistics.AbstractSourceStatistic<T>

All Implemented Interfaces:

SourceStatistic<T>

Direct Known Subclasses:

AbstractOperationStatistic, OperationResultFilter

public class AbstractSourceStatistic<T extends ChainedObserver>
extends Object
implements SourceStatistic<T>

An abstract SourceStatistic that handles derived statistic (de)registration.

This implementation exposes the currently registered statistics via the derivedStatistics collection. Concrete implementations of this class should fire on the contents of this to update the derived statistics.

Field Summary

Fields

Modifier and Type	Field	Description
protected Collection<T>	derivedStatistics

Constructor Summary

Constructors

Constructor	Description
AbstractSourceStatistic()

Method Summary

Modifier and Type	Method	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.

Methods inherited from class java.lang.Object

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

Field Detail

derivedStatistics

protected final Collection<T extends ChainedObserver> derivedStatistics

Constructor Detail

AbstractSourceStatistic

public AbstractSourceStatistic()

Method Detail

addDerivedStatistic

public void addDerivedStatistic(T derived)

Description copied from interface: SourceStatistic

Register the given Observer to be called by this SourceStatistic

Specified by:

addDerivedStatistic in interface SourceStatistic<T extends ChainedObserver>

Parameters:

derived - statistic to be registered

removeDerivedStatistic

public void removeDerivedStatistic(T derived)

Description copied from interface: SourceStatistic

Remove the given registered Observer from this SourceStatistic.

Specified by:

removeDerivedStatistic in interface SourceStatistic<T extends ChainedObserver>

Parameters:

derived - statistic to be removed

getDerivedStatistics

public Collection<T> getDerivedStatistics()

Description copied from interface: SourceStatistic

Retrieve all registered statistics.

Specified by:

getDerivedStatistics in interface SourceStatistic<T extends ChainedObserver>

Returns:

an unmodifiable collection of all derived statistics