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);
    }
}