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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.nurserostering.domain;

import java.util.Calendar;

public enum DayOfWeek {
    MONDAY("Monday"),
    TUESDAY("Tuesday"),
    WEDNESDAY("Wednesday"),
    THURSDAY("Thursday"),
    FRIDAY("Friday"),
    SATURDAY("Saturday"),
    SUNDAY("Sunday");

    public static DayOfWeek valueOfCalendar(int calendarDayInWeek) {
        switch (calendarDayInWeek) {
            case Calendar.SUNDAY:
                return SUNDAY;
            case Calendar.MONDAY:
                return MONDAY;
            case Calendar.TUESDAY:
                return TUESDAY;
            case Calendar.WEDNESDAY:
                return WEDNESDAY;
            case Calendar.THURSDAY:
                return THURSDAY;
            case Calendar.FRIDAY:
                return FRIDAY;
            case Calendar.SATURDAY:
                return SATURDAY;
            default:
                throw new IllegalArgumentException("The calendarDayInWeek (" + calendarDayInWeek
                        + ") is not supported.");
        }
    }

    public static DayOfWeek valueOfCode(String code) {
        for (DayOfWeek dayOfWeek : values()) {
            if (code.equalsIgnoreCase(dayOfWeek.getCode())) {
                return dayOfWeek;
            }
        }
        return null;
    }

    private String code;

    private DayOfWeek(String code) {
        this.code = code;
    }

    public String getCode() {
        return code;
    }

    public int getDistanceToNext(DayOfWeek other) {
        int distance = other.ordinal() - ordinal();
        if (distance < 0) {
            distance += 7;
        }
        return distance;
    }

    public DayOfWeek determineNextDayOfWeek() {
        switch (this) {
            case MONDAY:
                return TUESDAY;
            case TUESDAY:
                return WEDNESDAY;
            case WEDNESDAY:
                return THURSDAY;
            case THURSDAY:
                return FRIDAY;
            case FRIDAY:
                return SATURDAY;
            case SATURDAY:
                return SUNDAY;
            case SUNDAY:
                return MONDAY;
            default:
                throw new IllegalArgumentException("The dayOfWeek (" + this + ") is not supported.");
        }
    }

    public String getLabel() {
        return code.substring(0, 2);
    }

    public String toString() {
        return code.substring(0, 3);
    }

}