YearWeek.java

/*
 * Copyright 2011-2013 the original author or authors.
 *
 * 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 kr.debop4j.core;

import com.google.common.base.Objects;
import lombok.Getter;
import lombok.Setter;
import lombok.extern.slf4j.Slf4j;

/**
 * 년차 (Week of Year) 를 나타냅니다.
 *
 * @author 배성혁 ( sunghyouk.bae@gmail.com )
 * @since 12. 9. 12
 */
@Slf4j
public class YearWeek extends ValueObjectBase implements IYearWeek, Comparable<YearWeek> {

    public static final YearWeek MIN_VALUE = new YearWeek();

    @Getter
    @Setter
    private int year;
    @Getter
    @Setter
    private int week;

    /** 기본 생성자 */
    public YearWeek() {
        this(0, 1);
    }

    /**
     * 생성자
     *
     * @param year 해당 년도
     * @param week 해당 주차 (1 ~ 53)
     */
    public YearWeek(Integer year, Integer week) {
        this.year = (int) Objects.firstNonNull(year, 0);
        this.week = (int) Objects.firstNonNull(week, 1);
    }


    /**
     * Instantiates a new Year week.
     *
     * @param src the 원본
     */
    public YearWeek(YearWeek src) {
        this.year = src.year;
        this.week = src.week;
    }

    @Override
    public int compareTo(YearWeek that) {
        if (this.year != that.year)
            return this.year - that.year;
        return this.week - that.week;
    }


    @Override
    public int hashCode() {
        return year * 100 + week;
    }

    @Override
    protected Objects.ToStringHelper buildStringHelper() {
        return super.buildStringHelper()
                .add("year", year)
                .add("week", week);
    }

    private static final long serialVersionUID = -5529645755326276780L;
}