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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 2010 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.solver;

import java.io.Serializable;

import org.apache.commons.lang3.builder.CompareToBuilder;
import org.apache.commons.lang3.builder.EqualsBuilder;
import org.apache.commons.lang3.builder.HashCodeBuilder;
import org.optaplanner.examples.examination.domain.Topic;

/**
 * Calculated during initialization, not modified during score calculation.
 */
public class TopicConflict implements Serializable, Comparable {

    private Topic leftTopic;
    private Topic rightTopic;
    private int studentSize;

    public TopicConflict(Topic leftTopic, Topic rightTopic, int studentSize) {
        this.leftTopic = leftTopic;
        this.rightTopic = rightTopic;
        this.studentSize = studentSize;
    }

    public Topic getLeftTopic() {
        return leftTopic;
    }

    public void setLeftTopic(Topic leftTopic) {
        this.leftTopic = leftTopic;
    }

    public Topic getRightTopic() {
        return rightTopic;
    }

    public void setRightTopic(Topic rightTopic) {
        this.rightTopic = rightTopic;
    }

    public int getStudentSize() {
        return studentSize;
    }

    public void setStudentSize(int studentSize) {
        this.studentSize = studentSize;
    }

    public boolean equals(Object o) {
        if (this == o) {
            return true;
        } else if (o instanceof TopicConflict) {
            TopicConflict other = (TopicConflict) o;
            return new EqualsBuilder()
                    .append(leftTopic, other.leftTopic)
                    .append(rightTopic, other.rightTopic)
                    .isEquals();
        } else {
            return false;
        }
    }

    public int hashCode() {
        return new HashCodeBuilder()
                .append(leftTopic)
                .append(rightTopic)
                .toHashCode();
    }

    public int compareTo(TopicConflict other) {
        return new CompareToBuilder()
                .append(leftTopic, other.leftTopic)
                .append(rightTopic, other.rightTopic)
                .toComparison();
    }

    @Override
    public String toString() {
        return leftTopic + " & " + rightTopic + " = " + studentSize;
    }

}