class.ilCalendarCache.php

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<?php
/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */
 
include_once("./Services/Cache/classes/class.ilCache.php");
include_once './Services/Calendar/classes/class.ilCalendarSettings.php';
 
class ilCalendarCache extends ilCache
{
        private static $instance = null;
        
        public function __construct()
        {
                parent::__construct('ServicesCalendar','Calendar',true);
                $this->setExpiresAfter(60 * ilCalendarSettings::_getInstance()->getCacheMinutes());
        }
        
        public static function getInstance()
        {
                if(isset(self::$instance) and self::$instance)
                {
                        return self::$instance;
                }
                return self::$instance = new ilCalendarCache();
        }
        
        public function readEntry($a_entry_id)
        {
                if(!ilCalendarSettings::_getInstance()->isCacheUsed())
                {
                        return null;
                }
                return parent::readEntry($a_entry_id);
        }
        
        public function storeEntry($a_entry_id,$a_value,$a_key1 = 0,$a_key2 = 0,$a_key3 = '',$a_key4 = '')
        {
                if(!ilCalendarSettings::_getInstance()->isCacheUsed())
                {
                        return null;
                }
                parent::storeEntry($a_entry_id, $a_value, $a_key1, $a_key2, $a_key3, $a_key4);
        }
        
        public function storeUnlimitedEntry($a_entry_id,$a_value,$a_key1 = 0,$a_key2 = 0,$a_key3 = '',$a_key4 = '')
        {
                if(!ilCalendarSettings::_getInstance()->isCacheUsed())
                {
                        return null;
                }
                // Unlimited is a year
                $this->setExpiresAfter(60 * 60 * 24 * 365);
                parent::storeEntry($a_entry_id,$a_value, $a_key1, $a_key2, $a_key3, $a_key4);
                $this->setExpiresAfter(ilCalendarSettings::_getInstance()->getCacheMinutes());
                return true;
        }
        
        public function deleteUserEntries($a_user_id)
        {
                return $this->deleteByAdditionalKeys($a_user_id);
        }
}
?>