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OptaPlanner solves planning problems. This lightweight, embeddable planning engine implements powerful and scalable algorithms to optimize business resource scheduling and planning. This module contains the examples which demonstrate how to use it in a normal Java application.

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/*
 * Copyright 2021 Red Hat, Inc. and/or its affiliates.
 *
 * 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.optaplanner.examples.examination.domain;

import java.util.Arrays;
import java.util.Set;
import java.util.stream.Collectors;

import org.optaplanner.examples.common.domain.AbstractPersistable;

import com.thoughtworks.xstream.annotations.XStreamAlias;

@XStreamAlias("Topic")
public class Topic extends AbstractPersistable {

    private int duration; // in minutes
    private Set studentSet;

    // Calculated during initialization, not modified during score calculation.
    private boolean frontLoadLarge;
    private Set coincidenceTopicSet = null;

    public int getDuration() {
        return duration;
    }

    public void setDuration(int duration) {
        this.duration = duration;
    }

    public Set getStudentSet() {
        return studentSet;
    }

    public void setStudentSet(Set studentSet) {
        this.studentSet = studentSet;
    }

    public int getStudentSize() {
        return studentSet.size();
    }

    public boolean isFrontLoadLarge() {
        return frontLoadLarge;
    }

    public void setFrontLoadLarge(boolean frontLoadLarge) {
        this.frontLoadLarge = frontLoadLarge;
    }

    public Set getCoincidenceTopicSet() {
        return coincidenceTopicSet;
    }

    public void setCoincidenceTopicSet(Set coincidenceTopicSet) {
        this.coincidenceTopicSet = coincidenceTopicSet;
    }

    public boolean hasCoincidenceTopic() {
        return coincidenceTopicSet != null;
    }

    @Override
    public String toString() {
        return id == null ? "no id" : Long.toString(id);
    }

    // ************************************************************************
    // With methods
    // ************************************************************************

    public Topic withId(long id) {
        this.setId(id);
        return this;
    }

    public Topic withDuration(int duration) {
        this.setDuration(duration);
        return this;
    }

    public Topic withStudents(Student... students) {
        this.setStudentSet(Arrays.stream(students).collect(Collectors.toSet()));
        return this;
    }

    public Topic withFrontLoadLarge(boolean frontLoadLarge) {
        this.setFrontLoadLarge(frontLoadLarge);
        return this;
    }

    public Topic withCoincidenceTopicSet(Set coincidenceTopicSet) {
        this.setCoincidenceTopicSet(coincidenceTopicSet);
        return this;
    }
}