com.bigdata.counters
Class History.SampleIterator

java.lang.Object
  com.bigdata.counters.History.SampleIterator

All Implemented Interfaces:

Iterator<IHistoryEntry<T>>

Enclosing class:

History<T>

public class History.SampleIterator
extends Object
implements Iterator<IHistoryEntry<T>>

Takes a snapshot of the samples in the History and then visits those samples.

Version:

$Id: History.java 2265 2009-10-26 12:51:06Z thompsonbry $

Author:

Bryan Thompson

Constructor Summary

protected

History.SampleIterator()

Method Summary

long	getFirstSampleTime() The timestamp associated with the first sample.
long	getLastSampleTime() The timestamp associated with the last sample.
int	getSampleCount() The #of slots with sampled data.
boolean	hasNext()
IHistoryEntry<T>	next()
void	remove()

Methods inherited from class java.lang.Object

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

Constructor Detail

History.SampleIterator

protected History.SampleIterator()

Method Detail

getSampleCount

public int getSampleCount()

The #of slots with sampled data.

getFirstSampleTime

public long getFirstSampleTime()

The timestamp associated with the first sample.

Returns:

The timestamp -or- -1 if there are no samples.

getLastSampleTime

public long getLastSampleTime()

The timestamp associated with the last sample.

Returns:

The timestamp -or- -1 if there are no samples.

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<IHistoryEntry<T>>

next

public IHistoryEntry<T> next()

Specified by:

next in interface Iterator<IHistoryEntry<T>>

remove

public void remove()

Specified by:

remove in interface Iterator<IHistoryEntry<T>>