YearAndWeek.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.timeperiod;

import com.google.common.base.Objects;
import kr.debop4j.core.ValueObjectBase;
import lombok.Getter;
import lombok.Setter;
import org.joda.time.DateTime;

/**
 * 년도와 주차를 표현
 *
 * @author 배성혁 sunghyouk.bae@gmail.com
 * @since 13. 5. 12. 오후 2:05
 */
@Getter
@Setter
public class YearAndWeek extends ValueObjectBase implements Comparable<YearAndWeek> {

    private static final long serialVersionUID = 7426266466794583765L;

    private Integer year;
    private Integer weekOfYear;

    /** Instantiates a new Year and week. */
    protected YearAndWeek() { }

    /**
     * Instantiates a new Year and week.
     *
     * @param moment the moment
     */
    public YearAndWeek(DateTime moment) {
        this.year = moment.getWeekyear();
        this.weekOfYear = moment.getWeekOfWeekyear();
    }

    /**
     * Instantiates a new Year and week.
     *
     * @param year       the year
     * @param weekOfYear the week of year
     */
    public YearAndWeek(Integer year, Integer weekOfYear) {
        this.year = year;
        this.weekOfYear = weekOfYear;
    }

    /**
     * Instantiates a new Year and week.
     *
     * @param source the source
     */
    public YearAndWeek(YearAndWeek source) {
        if (source != null) {
            this.year = source.getYear();
            this.weekOfYear = source.getWeekOfYear();
        }
    }

    @Override
    public int compareTo(YearAndWeek o) {
        return hashCode() - o.hashCode();
    }

    @Override
    public int hashCode() {
        int y = (year != null) ? year : 0;
        int w = (weekOfYear != null) ? weekOfYear : 0;
        return y * 100 + w;
    }

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