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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 2018 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.rocktour.domain;

import java.util.Map;

public class RockLocation {

    protected String cityName;
    protected double latitude;
    protected double longitude;

    // Prefer Map over array or List because shows might be added and removed in real-time planning.
    protected Map drivingSecondsMap;

    public RockLocation() {
    }

    public RockLocation(String cityName, double latitude, double longitude) {
        this.cityName = cityName;
        this.latitude = latitude;
        this.longitude = longitude;
    }

    /**
     * @param location never null
     * @return a positive number, in seconds
     */
    public long getDrivingTimeTo(RockLocation location) {
        if (this == location) {
            return 0L;
        }
        return drivingSecondsMap.get(location);
    }

    public long getAirDistanceTo(RockLocation location) {
        // Euclidean distance (Pythagorean theorem) - not correct when the surface is a sphere
        double latitudeDifference = location.latitude - latitude;
        double longitudeDifference = location.longitude - longitude;
        double distance = Math.sqrt(
                (latitudeDifference * latitudeDifference) + (longitudeDifference * longitudeDifference));
        // Multiplied by 1000 to avoid floating point arithmetic rounding errors
        return (long) (distance * 1000.0 + 0.5);
    }

    @Override
    public String toString() {
        return cityName;
    }

    // ************************************************************************
    // Simple getters and setters
    // ************************************************************************

    public String getCityName() {
        return cityName;
    }

    public void setCityName(String cityName) {
        this.cityName = cityName;
    }

    public double getLatitude() {
        return latitude;
    }

    public void setLatitude(double latitude) {
        this.latitude = latitude;
    }

    public double getLongitude() {
        return longitude;
    }

    public void setLongitude(double longitude) {
        this.longitude = longitude;
    }

    public Map getDrivingSecondsMap() {
        return drivingSecondsMap;
    }

    public void setDrivingSecondsMap(Map drivingSecondsMap) {
        this.drivingSecondsMap = drivingSecondsMap;
    }

}