org.javades.jqueues.r5.entity.jq.queue.composite.parallel

Class ParallelSimQueuesSelector<J extends SimJob,DQ extends SimQueue>

java.lang.Object

org.javades.jqueues.r5.entity.jq.queue.composite.parallel.ParallelSimQueuesSelector<J,DQ>

Type Parameters:

J - The job type.

DQ - The queue-type for delegate jobs.

All Implemented Interfaces:

SimQueueSelector<J,DQ>

public class ParallelSimQueuesSelector<J extends SimJob,DQ extends SimQueue>
extends Object
implements SimQueueSelector<J,DQ>

A SimQueueSelector for parallel queues.

With parallel queues, a (delegate) job visits no more than one sub-queue and then leaves.

This selector embeds the user-supplied selector for parallel queues, and makes sure that a (delegate) job leaves the queueing system after one (zero) visit.

Author:

Jan de Jongh, TNO

Copyright (C) 2005-2017 Jan de Jongh, TNO

This file is covered by the LICENSE file in the root of this project.

Constructor Summary

Constructors

Constructor and Description
ParallelSimQueuesSelector(SimQueueSelector<J,DQ> userSimQueueSelector) Creates a SimQueueSelector for parallel queues.

Method Summary

Modifier and Type	Method and Description
void	resetSimQueueSelector() Resets this selector.
DQ	selectFirstQueue(double time, J job) Returns the result from the user selector if present, null otherwise.
DQ	selectNextQueue(double time, J job, DQ previousQueue) Returns null.

Methods inherited from class java.lang.Object

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

Constructor Detail

ParallelSimQueuesSelector

public ParallelSimQueuesSelector(SimQueueSelector<J,DQ> userSimQueueSelector)

Creates a SimQueueSelector for parallel queues.

Parameters:

userSimQueueSelector - The user-supplied SimQueueSelector, may be null, in which case a visiting jobs leaves upon arrival.

Method Detail

resetSimQueueSelector

public void resetSimQueueSelector()

Description copied from interface: SimQueueSelector

Resets this selector.

Specified by:

resetSimQueueSelector in interface SimQueueSelector<J extends SimJob,DQ extends SimQueue>

selectFirstQueue

public final DQ selectFirstQueue(double time,
                                 J job)

Returns the result from the user selector if present, null otherwise.

Specified by:

selectFirstQueue in interface SimQueueSelector<J extends SimJob,DQ extends SimQueue>

Parameters:

time - The time of arrival of the job.

job - The job, non-null.

Returns:

The result from the user sub-queue selector if present, null otherwise.

selectNextQueue

public final DQ selectNextQueue(double time,
                                J job,
                                DQ previousQueue)

Returns null.

Specified by:

selectNextQueue in interface SimQueueSelector<J extends SimJob,DQ extends SimQueue>

Parameters:

time - The current time, i.e., the departure time of the job at its previous queue.

job - The job, non-null.

previousQueue - The previous queue the job visited, and just departed from.

Returns:

null.

Throws:

IllegalStateException - If the previous queue argument is null.