org.jbpm.sim.def
Class JbpmSimulationClock

java.lang.Object
  org.jbpm.sim.def.JbpmSimulationClock

All Implemented Interfaces:

java.util.Observer, Clock.DateGenerator

public class JbpmSimulationClock
extends java.lang.Object
implements Clock.DateGenerator, java.util.Observer

This SimulationClock can be configured to be the clock for jbpm and observe the real simulation clock of DESMOJ. So it always returns the current simulation time, but converted in a Date object (simulation time 1 = new Date(1))

Author:

bernd.ruecker@camunda.com

Field Summary

static java.util.Date	currentTime the clock always reflects the current simulation time as a java.util.Date
static long	timeScaleFactor For the moment, we think of the smallest amount of model time to be seconds but the representation as double is in hours.

Constructor Summary

JbpmSimulationClock()

Method Summary

static double	getAsDouble(long l) Currently we have a problem of converting the simulation time (represented as double) to a representation as long, needed for the jbpm log.
static long	getAsLong(double d)
java.util.Date	getCurrentTime()
void	update(java.util.Observable o, java.lang.Object arg)

Methods inherited from class java.lang.Object

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

Field Detail

currentTime

public static java.util.Date currentTime

the clock always reflects the current simulation time as a java.util.Date

timeScaleFactor

public static long timeScaleFactor

For the moment, we think of the smallest amount of model time to be seconds but the representation as double is in hours. Maybe not very realistic by the way, but sufficient for the moment. See ApiDoc on getAsDouble for the weakness of conversation for more information.

Constructor Detail

JbpmSimulationClock

public JbpmSimulationClock()

Method Detail

getCurrentTime

public java.util.Date getCurrentTime()

Specified by:

getCurrentTime in interface Clock.DateGenerator

update

public void update(java.util.Observable o,
                   java.lang.Object arg)

Specified by:

update in interface java.util.Observer

getAsDouble

public static double getAsDouble(long l)

Currently we have a problem of converting the simulation time (represented as double) to a representation as long, needed for the jbpm log. We would need to know the exact scale and steps of the simulation time, to calculate the long value. And currently I am not sure about statistical effects when just multiplying the double and truncate the result to long. But at the moment I ignore this problem, because it doesn't affect the simulation run, it only affects the time seen in jBPM, and this time is only used for writing logs. It may get a problem if we start to use Timers in the simulation, which must be triggered to some simulation time. So for the moment only log this problem and be careful with judging jbpm log times. TODO: Improve the time conversion double -> long

getAsLong

public static long getAsLong(double d)