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ro.nolimits.rue.util
Class AveragePerTimeCounter  

java.lang.Object
  ro.nolimits.rue.util.AveragePerTimeCounter

All Implemented Interfaces:

java.io.Serializable

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public class AveragePerTimeCounter

extends java.lang.Object

implements java.io.Serializable

Used to count life-time.
Given a time period, it tracks the number of cals of the hit() method durring that time period, and makes an average of the values passed in.

Version:

$Revision: 0.5.1.1 $ $Date: 2000/08/01 10:52:45 $

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Field Summary
private  java.util.Vector	_fifo
private  long	_timePeriod           The time (in ms) durring which a hit will be considered as active
private  java.util.Vector	_values

 

Constructor Summary

AveragePerTimeCounter()           Default constructor

AveragePerTimeCounter(long time_int)           It constructs the counterand initialize the time interval used to count a set of elements to the time_int value.

 

Method Summary
private  void	cleanFIFO(long curr_time)           That's the way we count hits, we put the time of the hit in a fifo then we only have to care to keep in the fifo only the values which are in our time interval.
float	getAverage()           Returns the average of the values setted through the hit(float) method durring the specified with setTimeInterval
long	getCount()           Returns the number of hits occured during the last x milliseconds specified with setTimeInterval
long	getTimeInterval()           With this method we can set the time interval used for counting hits
void	hit(float value)           Registers another hit and passes the value which will be averaged
void	setTimeInterval(long time_int)           With this method we can set the time interval used for counting hits

 

Methods inherited from class java.lang.Object

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

 

Field Detail

_timePeriod

private long _timePeriod

The time (in ms) durring which a hit will be considered as active

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_fifo

private java.util.Vector _fifo

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_values

private java.util.Vector _values

Constructor Detail

AveragePerTimeCounter

public AveragePerTimeCounter()

Default constructor

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AveragePerTimeCounter

public AveragePerTimeCounter(long time_int)

It constructs the counterand initialize the time interval used to count a set of elements to the time_int value.

Method Detail

setTimeInterval

public void setTimeInterval(long time_int)

With this method we can set the time interval used for counting hits

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cleanFIFO

private void cleanFIFO(long curr_time)

That's the way we count hits, we put the time of the hit in a fifo then we only have to care to keep in the fifo only the values which are in our time interval. We would only have to call this when a getCount is received, but in for not getting too big without reasons we will call it also in hit()

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getTimeInterval

public long getTimeInterval()

With this method we can set the time interval used for counting hits

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hit

public void hit(float value)

Registers another hit and passes the value which will be averaged

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getCount

public long getCount()

Returns the number of hits occured during the last x milliseconds specified with setTimeInterval

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getAverage

public float getAverage()

Returns the average of the values setted through the hit(float) method durring the specified with setTimeInterval

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