jasima.shopSim.prioRules.basic.CR 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.basic;
import jasima.shopSim.core.PR;
import jasima.shopSim.core.PrioRuleTarget;
/**
* This class implements the Critical Ratio rule and some of its variants,
* developed by Rose (2002), doi:10.1109/WSC.2002.1166410.
*
* @author Torsten Hildebrandt
* @author Christoph Pickardt, 2011-11-15
* @version "$Id: CR.java 753 2015-07-27 15:29:49Z [email protected] $"
*/
public class CR extends PR {
private static final long serialVersionUID = 1690734931010618195L;
@Override
public double calcPrio(PrioRuleTarget job) {
return -((job.getDueDate() - job.getShop().simTime()) / job
.remainingProcTime());
}
public static class Variant1 extends PR {
private static final long serialVersionUID = -7545346726088550611L;
@Override
public double calcPrio(PrioRuleTarget job) {
double slack = job.getDueDate() - job.getShop().simTime();
if (slack > 0)
return -(1.0d + slack) / (1.0d + job.remainingProcTime());
else
return -(1.0d / ((1.0d - slack) * (1.0d + job
.remainingProcTime())));
}
@Override
public String getName() {
return "CR_V1";
}
}
public static class Variant2 extends PR {
private static final long serialVersionUID = 6097877363880443570L;
@Override
public double calcPrio(PrioRuleTarget job) {
return -(job.getDueDate() - job.getShop().simTime())
/ (1.0d + job.remainingProcTime());
}
@Override
public String getName() {
return "CR_V2";
}
}
}