jasima.shopSim.prioRules.setup.WBPT Maven / Gradle / Ivy

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/*******************************************************************************
 * Copyright (c) 2010-2015 Torsten Hildebrandt and jasima contributors
 *
 * This file is part of jasima, v1.2.
 *
 * jasima is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * jasima 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with jasima.  If not, see .
 *******************************************************************************/
package jasima.shopSim.prioRules.setup;

import jasima.shopSim.core.PrioRuleTarget;
import jasima.shopSim.core.PriorityQueue;

/**
 * This class implements the Weighted Batch Processing Time rule, developed by
 * Raman et al. (1989), which is an additive combination of MMS and SPT, see
 * also Pickardt and Branke (2012).
 * 
 * @author Christoph Pickardt, 2011-11-15
 * @version $Id: WBPT.java 550 2015-01-23 15:07:23Z [email protected] $
 */
public class WBPT extends MMS {

	@Override
	public double calcPrio(PrioRuleTarget job) {
		if (arrivesTooLate(job))
			return PriorityQueue.MIN_PRIO;

		double marginalSetup = getOwner().getSetupMatrix()[getOwner().currMachine.setupState][job
				.getCurrentOperation().setupState]
				/ jobsPerFamily.get("" + job.getCurrentOperation().setupState);

		return -(marginalSetup + job.getCurrentOperation().procTime);
	}

}