org.drools.planner.examples.curriculumcourse.domain.solver.LectureDifficultyWeightFactory Maven / Gradle / Ivy
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Drools Planner optimizes automated planning by combining metaheuristic search algorithms with rule
engine powered score calculation. This is the drools-planner-examples module which contains examples on how to use
Drools Planner.
/*
* Copyright 2010 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.planner.examples.curriculumcourse.domain.solver;
import org.apache.commons.lang.builder.CompareToBuilder;
import org.drools.planner.api.domain.entity.PlanningEntityDifficultyWeightFactory;
import org.drools.planner.core.solution.Solution;
import org.drools.planner.examples.curriculumcourse.domain.Course;
import org.drools.planner.examples.curriculumcourse.domain.CurriculumCourseSchedule;
import org.drools.planner.examples.curriculumcourse.domain.Lecture;
import org.drools.planner.examples.curriculumcourse.domain.UnavailablePeriodConstraint;
public class LectureDifficultyWeightFactory implements PlanningEntityDifficultyWeightFactory {
public Comparable createDifficultyWeight(Solution solution, Object planningEntity) {
CurriculumCourseSchedule schedule = (CurriculumCourseSchedule) solution;
Lecture lecture = (Lecture) planningEntity;
Course course = lecture.getCourse();
int unavailablePeriodConstraintCount = 0;
for (UnavailablePeriodConstraint constraint : schedule.getUnavailablePeriodConstraintList()) {
if (constraint.getCourse().equals(course)) {
unavailablePeriodConstraintCount++;
}
}
return new LectureDifficultyWeight(lecture, unavailablePeriodConstraintCount);
}
public static class LectureDifficultyWeight implements Comparable {
private final Lecture lecture;
private final int unavailablePeriodConstraintCount;
public LectureDifficultyWeight(Lecture lecture, int unavailablePeriodConstraintCount) {
this.lecture = lecture;
this.unavailablePeriodConstraintCount = unavailablePeriodConstraintCount;
}
public int compareTo(LectureDifficultyWeight other) {
Course course = lecture.getCourse();
Course otherCourse = other.lecture.getCourse();
return new CompareToBuilder()
.append(course.getCurriculumList().size(), otherCourse.getCurriculumList().size())
.append(unavailablePeriodConstraintCount, other.unavailablePeriodConstraintCount)
.append(course.getLectureSize(), otherCourse.getLectureSize())
.append(course.getStudentSize(), otherCourse.getStudentSize())
.append(course.getMinWorkingDaySize(), otherCourse.getMinWorkingDaySize())
.append(lecture.getId(), other.lecture.getId())
.toComparison();
}
}
}