# TimestampRange.class.php

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    00001 <?php
    00002 /***************************************************************************
    00003  *   Copyright (C) 2007 by Konstantin V. Arkhipov                          *
    00004  *                                                                         *
    00005  *   This program is free software; you can redistribute it and/or modify  *
    00006  *   it under the terms of the GNU Lesser General Public License as        *
    00007  *   published by the Free Software Foundation; either version 3 of the    *
    00008  *   License, or (at your option) any later version.                       *
    00009  *                                                                         *
    00010  ***************************************************************************/
    00011
    00018     class TimestampRange extends DateRange
    00019     {
    00023         public static function create($start = null, $end = null)
    00024         {
    00025             return new self($start, $end);
    00026         }
    00027
    00028         public function getStartStamp() // null if start is null
    00029         {
    00030             if ($start = $this->getStart()) {
    00031                 return $start->toStamp();
    00032             }
    00033
    00034             return null;
    00035         }
    00036
    00037         public function getEndStamp() // null if end is null
    00038         {
    00039             if ($end = $this->getEnd()) {
    00040                 return $end->toStamp();
    00041             }
    00042
    00043             return null;
    00044         }
    00045
    00049         public function toTimestampRange()
    00050         {
    00051             return $this;
    00052         }
    00053
    00054         protected function getObjectName()
    00055         {
    00056             return 'Timestamp';
    00057         }
    00058     }
    00059 ?>