ds.funnel.traffic.component.sizedistribution

Class NormalSizeDistribution

java.lang.Object

ds.funnel.traffic.component.sizedistribution.NormalSizeDistribution

All Implemented Interfaces:

PacketSizeDistribution

public class NormalSizeDistribution
extends java.lang.Object
implements PacketSizeDistribution

NormalSizeDistribution defines a packet size distribution in which packet sizes (in bytes) are generated (approximately) from a normal distribution with some specified mean and standard deviation.

Author:

Kira Lindburg

Constructor Summary

Constructors

Constructor and Description
NormalSizeDistribution() Creates a new NormalSizeDistribution with a mean of 0.0 and a standard deviation of 1.0 (a standard normal distribution).
NormalSizeDistribution(double mean) Creates a new NormalSizeDistribution with the specified mean and a standard deviation of 1.0.
NormalSizeDistribution(double mean, double standardDeviation) Creates a new NormalSizeDistribution with the specified mean and standard deviation.

Method Summary

Modifier and Type	Method and Description
double	getMean()
double	getStandardDeviation()
int	getType()
int	nextSize()
void	setMean(double newMean) Sets the mean value of packet sizes generated by this normal size distribution to the specified value.
void	setStandardDeviation(double newStandardDeviation) Sets the standard deviation for packet sizes generated by this normal size distribution to the specified value.

Methods inherited from class java.lang.Object

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

Constructor Detail

NormalSizeDistribution

public NormalSizeDistribution()

Creates a new NormalSizeDistribution with a mean of 0.0 and a standard deviation of 1.0 (a standard normal distribution).

NormalSizeDistribution

public NormalSizeDistribution(double mean)

Creates a new NormalSizeDistribution with the specified mean and a standard deviation of 1.0.

NormalSizeDistribution

public NormalSizeDistribution(double mean,
                              double standardDeviation)

Creates a new NormalSizeDistribution with the specified mean and standard deviation.

Method Detail

getMean

public double getMean()

Returns:

the current mean value for packet sizes generated by this packet size distribution

setMean

public void setMean(double newMean)

Sets the mean value of packet sizes generated by this normal size distribution to the specified value.

getStandardDeviation

public double getStandardDeviation()

Returns:

the current standard deviation of packet sizes generated by this packet size distribution

setStandardDeviation

public void setStandardDeviation(double newStandardDeviation)

Sets the standard deviation for packet sizes generated by this normal size distribution to the specified value.

getType

public int getType()

Specified by:

getType in interface PacketSizeDistribution

Returns:

an integer id number specifying the type of distribution. This should be a unique identifier for the type of size distribution generated by a given PacketSizeDistribution.

nextSize

public int nextSize()

Specified by:

nextSize in interface PacketSizeDistribution

Returns:

a size, in bytes, for the next packet to be sent following some specified distribution pattern