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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 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.optaplanner.examples.nurserostering.domain;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import java.util.TimeZone;

import com.thoughtworks.xstream.annotations.XStreamAlias;
import org.optaplanner.examples.common.domain.AbstractPersistable;

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

    private int dayIndex;
    private String dateString;
    private DayOfWeek dayOfWeek;

    private List shiftList;

    public int getDayIndex() {
        return dayIndex;
    }

    public void setDayIndex(int dayIndex) {
        this.dayIndex = dayIndex;
    }

    public String getDateString() {
        return dateString;
    }

    public void setDateString(String dateString) {
        this.dateString = dateString;
    }

    public DayOfWeek getDayOfWeek() {
        return dayOfWeek;
    }

    public void setDayOfWeek(DayOfWeek dayOfWeek) {
        this.dayOfWeek = dayOfWeek;
    }

    public List getShiftList() {
        return shiftList;
    }

    public void setShiftList(List shiftList) {
        this.shiftList = shiftList;
    }

    public String determineNextDateString() {
        TimeZone LOCAL_TIMEZONE = TimeZone.getTimeZone("GMT");
        Calendar calendar = Calendar.getInstance();
        calendar.setTimeZone(LOCAL_TIMEZONE);
        calendar.clear();
        DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
        dateFormat.setCalendar(calendar);
        Date date;
        try {
            date = dateFormat.parse(dateString);
        } catch (ParseException e) {
            throw new IllegalStateException("Could not parse shiftDate (" + this
                    + ")'s dateString (" + dateString + ").");
        }
        calendar.setTime(date);
        calendar.add(Calendar.DAY_OF_YEAR, 1);
        return dateFormat.format(calendar.getTime());
    }

    public String getLabel() {
        return dayOfWeek.getLabel() + " " + dateString.substring(5).replaceAll("\\-", "/");
    }

    @Override
    public String toString() {
        return dateString + "(" + dayOfWeek + ")";
    }

    public int getWeekendSundayIndex() {
        switch (dayOfWeek) {
            case MONDAY:
                return dayIndex - 1;
            case TUESDAY:
                return dayIndex - 2;
            case WEDNESDAY:
                return dayIndex - 3;
            case THURSDAY:
                return dayIndex + 3;
            case FRIDAY:
                return dayIndex + 2;
            case SATURDAY:
                return dayIndex + 1;
            case SUNDAY:
                return dayIndex;
            default:
                throw new IllegalArgumentException("The dayOfWeek (" + dayOfWeek + ") is not valid.");
        }
    }

}