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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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package org.optaplanner.examples.nurserostering.domain;

import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import java.util.List;

import org.optaplanner.examples.common.domain.AbstractPersistable;
import org.optaplanner.examples.common.persistence.jackson.JacksonUniqueIdGenerator;
import org.optaplanner.examples.common.swingui.components.Labeled;

import com.fasterxml.jackson.annotation.JsonIdentityInfo;
import com.fasterxml.jackson.annotation.JsonIgnore;

@JsonIdentityInfo(generator = JacksonUniqueIdGenerator.class)
public class ShiftDate extends AbstractPersistable implements Labeled, Comparable {

    private static final DateTimeFormatter LABEL_FORMATTER = DateTimeFormatter.ofPattern("E d MMM");

    private int dayIndex; // TODO check if still needed/faster now that we use LocalDate instead of java.util.Date
    private LocalDate date;

    private List shiftList;

    public ShiftDate() {
    }

    public ShiftDate(long id) {
        super(id);
    }

    public ShiftDate(long id, int dayIndex, LocalDate date) {
        this(id);
        this.dayIndex = dayIndex;
        this.date = date;
    }

    public int getDayIndex() {
        return dayIndex;
    }

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

    public LocalDate getDate() {
        return date;
    }

    public void setDate(LocalDate date) {
        this.date = date;
    }

    @JsonIgnore
    public DayOfWeek getDayOfWeek() {
        return date.getDayOfWeek();
    }

    public List getShiftList() {
        return shiftList;
    }

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

    @JsonIgnore
    public int getWeekendSundayIndex() {
        switch (date.getDayOfWeek()) {
            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 (" + date.getDayOfWeek() + ") is not valid.");
        }
    }

    @Override
    public String getLabel() {
        return date.format(LABEL_FORMATTER);
    }

    @Override
    public String toString() {
        return date.format(DateTimeFormatter.ISO_DATE);
    }

    @Override
    public int compareTo(ShiftDate o) {
        return this.getDate().compareTo(o.getDate());
    }
}