DateRange.java

/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is part of dcm4che, an implementation of DICOM(TM) in
 * Java(TM), hosted at https://github.com/gunterze/dcm4che.
 *
 * The Initial Developer of the Original Code is
 * Agfa Healthcare.
 * Portions created by the Initial Developer are Copyright (C) 2011
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 * See @authors listed below
 *
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 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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package org.dcm4che3.data;

import java.io.Serializable;
import java.util.Date;

/**
 * @author Gunter Zeilinger <gunterze@gmail.com>
 * 
 */
public class DateRange implements Serializable {

    private static final long serialVersionUID = 88574297440294935L;

    private final Date start;
    private final Date end;

    public DateRange(Date start, Date end) {
        this.start = start;
        this.end = end;
    }

    public final Date getStartDate() {
        return start;
    }

    public final Date getEndDate() {
        return end;
    }

    public boolean isStartDateExeedsEndDate() {
        return start != null && end != null && start.after(end);
    }

    public boolean contains(Date when) {
        return !(start != null && start.after(when)
              || end != null && end.before(when));
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == this)
            return true;

        if (!(obj instanceof DateRange))
            return false;

        DateRange other = (DateRange) obj;
        return (start == null 
                ? other.start == null
                : start.equals(other.start)) 
            && (end == null
                ? other.end == null
                : end.equals(other.end));
    }

    @Override
    public int hashCode() {
        int code = 0;
        if (start != null)
            code = start.hashCode();
        if (end != null)
            code ^= start.hashCode();
        return code;
    }

    @Override
    public String toString() {
        return "[" + start + ", " + end + "]";
    }

}