org.openware.loadsim.simulation
Class GaussianTimer

java.lang.Object
  |
  +--org.openware.loadsim.simulation.GaussianTimer

All Implemented Interfaces:

ITimer, java.io.Serializable

public class GaussianTimer

extends java.lang.Object

implements ITimer

Implements a Gaussian based timer. Timers are used to add a random delay between the successful download of the next page and the submission of the next link. The GaussianTime chooses the delay based on a Gaussian random distribution.

Author:

Vincent Sheffer.

See Also:

Serialized Form

Constructor Summary

GaussianTimer(long mean, double stdev)
Create a GaussianTimer explicitly giving the mean and standard deviation to define the random distribution.

GaussianTimer(org.w3c.dom.Node node)
Create a GaussianTimer based on configuration information.

Method Summary

java.lang.String	getId() Get the ID of the timer.
long	nextDelay() Get the next delay for this timer.
java.lang.String	toString() Return a String representation of the GaussianTimer.

Methods inherited from class java.lang.Object

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

Constructor Detail

GaussianTimer

public GaussianTimer(org.w3c.dom.Node node)
              throws ConfigException

Create a GaussianTimer based on configuration information.

Parameters:

node - The DOM node for that contains the timer specification.

Throws:

ConfigException - if there is a problem with the configuration file.

GaussianTimer

public GaussianTimer(long mean,
                     double stdev)

Create a GaussianTimer explicitly giving the mean and standard deviation to define the random distribution.

Parameters:

mean - The mean of the distribution.

stdev - The standard deviation of the distribution.

Method Detail

nextDelay

public long nextDelay()

Get the next delay for this timer.

Specified by:

nextDelay in interface ITimer

Returns:

The next delay that can be used in a Thread.sleep() method.

getId

public java.lang.String getId()

Get the ID of the timer. The ID is used to reference the timer in the configuration file.

Specified by:

getId in interface ITimer

Returns:

The ID of the timer.

toString

public java.lang.String toString()

Return a String representation of the GaussianTimer.

Overrides:

toString in class java.lang.Object

Returns:

a String representation of the GaussianTimer.