Source for file Timespan.php

<?php 
 
/**
 * Timespan defines a time span in terms of a start and end date and time.
 * 
 * <p>
 * OSID Version: 2.0
 * </p>
 * 
 * <p>
 * Licensed under the {@link org.osid.SidImplementationLicenseMIT MIT}
 * O.K.I&#46; OSID Definition License}.
 * </p>
 * 
 * @package org.osid.scheduling
 */
class Timespan
{
    /**
     * Get the Start date and time of this Timespan.
     *  
     * @return int 
     * 
     * @throws object SchedulingException An exception with one of
     *          the following messages defined in
     *          org.osid.scheduling.SchedulingException may be thrown:   {@link }
     *          org.osid.scheduling.SchedulingException#OPERATION_FAILED
     *          OPERATION_FAILED}, {@link }
     *          org.osid.scheduling.SchedulingException#PERMISSION_DENIED
     *          PERMISSION_DENIED}, {@link }
     *          org.osid.scheduling.SchedulingException#CONFIGURATION_ERROR
     *          CONFIGURATION_ERROR}, {@link }
     *          org.osid.scheduling.SchedulingException#UNIMPLEMENTED
     *          UNIMPLEMENTED}
     * 
     * @access public
     */
    function getStart () { 
        die ("Method <b>".__FUNCTION__."()</b> declared in interface<b> ".__CLASS__."</b> has not been overloaded in a child class."); 
    } 
 
    /**
     * Get the End date and time of this Timespan.
     *  
     * @return int 
     * 
     * @throws object SchedulingException An exception with one of
     *          the following messages defined in
     *          org.osid.scheduling.SchedulingException may be thrown:   {@link }
     *          org.osid.scheduling.SchedulingException#OPERATION_FAILED
     *          OPERATION_FAILED}, {@link }
     *          org.osid.scheduling.SchedulingException#PERMISSION_DENIED
     *          PERMISSION_DENIED}, {@link }
     *          org.osid.scheduling.SchedulingException#CONFIGURATION_ERROR
     *          CONFIGURATION_ERROR}, {@link }
     *          org.osid.scheduling.SchedulingException#UNIMPLEMENTED
     *          UNIMPLEMENTED}
     * 
     * @access public
     */
    function getEnd () { 
        die ("Method <b>".__FUNCTION__."()</b> declared in interface<b> ".__CLASS__."</b> has not been overloaded in a child class."); 
    } 
}
 
?>