org.apache.commons.monitoring
Interface Counter

All Superinterfaces:

StatValue

All Known Implementing Classes:

CompositeCounter, ThreadSafeCounter

public interface Counter
extends StatValue

A counter to collect application processed items (bytes received, lines processed by a batch, time elapsed by some processing ...).

Author:

Nicolas De Loof

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.commons.monitoring.StatValue

StatValue.Listener

Method Summary

void	add(long delta, Unit unit) Add value to the counter.
int	getHits()
long	getSum()

Methods inherited from interface org.apache.commons.monitoring.StatValue

addListener, get, getMax, getMean, getMin, getMonitor, getRole, getStandardDeviation, getUnit, removeListener, reset, set, setMonitor

Method Detail

add

void add(long delta,
         Unit unit)

Add value to the counter. Delta should not be negative (in such case a Gauge should be used).

Parameters:

delta -

getSum

long getSum()

Returns:

the sum of all set operations

getHits

int getHits()

Returns:

how many time the value has been set