jasima.shopSim.prioRules.upDownStream.PTPlusWINQPlusNPT Maven / Gradle / Ivy
/*******************************************************************************
* This file is part of jasima, v1.3, the Java simulator for manufacturing and
* logistics.
*
* Copyright (c) 2015 jasima solutions UG
* Copyright (c) 2010-2015 Torsten Hildebrandt and jasima contributors
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see .
*******************************************************************************/
package jasima.shopSim.prioRules.upDownStream;
import jasima.shopSim.core.PR;
import jasima.shopSim.core.PrioRuleTarget;
/**
* This class implements the 2PT+WINQ+NPT rule, developed by Holthaus and
* Rajendran (2000), DOI: 10.1080/095372800232379, which extends PT+WINQ by
* taking into account the processing time of a job's next operation.
*
* @author Christoph Pickardt, 2011-11-15
* @version
* "$Id: PTPlusWINQPlusNPT.java 753 2015-07-27 15:29:49Z [email protected] $"
*/
public class PTPlusWINQPlusNPT extends PR {
private static final long serialVersionUID = 249563235097986052L;
@Override
public double calcPrio(PrioRuleTarget j) {
return -(2 * j.getCurrentOperation().procTime + WINQ.winq(j) + npt(j));
}
/**
* Next Processing Time of a job, i.e. processing time of next operation.
*/
public static double npt(PrioRuleTarget job) {
int nextTask = job.getTaskNumber() + 1;
if (nextTask >= job.getOps().length)
return 0.0d;
else
return job.getOps()[nextTask].procTime;
}
}