RandomUnscoredPlanSelector.java

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/* *********************************************************************** *
 * project: org.matsim.*
 * RandomPlanSelector.java
 *                                                                         *
 * *********************************************************************** *
 *                                                                         *
 * copyright       : (C) 2007 by the members listed in the COPYING,        *
 *                   LICENSE and WARRANTY file.                            *
 * email           : info at matsim dot org                                *
 *                                                                         *
 * *********************************************************************** *
 *                                                                         *
 *   This program 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 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *   See also COPYING, LICENSE and WARRANTY file                           *
 *                                                                         *
 * *********************************************************************** */

package org.matsim.core.replanning.selectors;

import org.matsim.api.core.v01.population.BasicPlan;
import org.matsim.api.core.v01.population.HasPlansAndId;
import org.matsim.core.gbl.MatsimRandom;


public class RandomUnscoredPlanSelector<T extends BasicPlan, I> implements PlanSelector<T, I> {

    @Override
    public T selectPlan(final HasPlansAndId<T, I> person) {
        // following code copied from PersonImpl and then made runnable
        
        int cntUnscored = 0;
        for (T plan : person.getPlans()) {
            if (plan.getScore() == null) {
                cntUnscored++;
            }
        }
        if (cntUnscored > 0) {
            // select one of the unscored plans
            int idxUnscored = MatsimRandom.getRandom().nextInt(cntUnscored);
            cntUnscored = 0;
            for (T plan : person.getPlans()) {
                if (plan.getScore() == null) {
                    if (cntUnscored == idxUnscored) {
                        return plan;
                    }
                    cntUnscored++;
                }
            }
        }
        return null;
    }
}