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File: FlushDatabaseCacheTask.class
<?php
/*
 * Gallery - a web based photo album viewer and editor
 * Copyright (C) 2000-2007 Bharat Mediratta
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
 */

GalleryCoreApi::requireOnce('modules/core/AdminMaintenance.inc');

/**
 * This is a MaintenanceTask that will delete all cached database information.
 * @package GalleryCore
 * @subpackage Classes
 * @author Bharat Mediratta <bharat@menalto.com>
 * @version $Revision: 15513 $
 */
class FlushDatabaseCacheTask extends MaintenanceTask {
    /**
     * @see MaintenanceTask::getInfo
     */
    function getInfo() {
	global $gallery;

	$info['l10Domain'] = 'modules_core';
	$info['title'] = $gallery->i18n('Delete database cache');
	$info['description'] = $gallery->i18n(
	    'Gallery stores commonly used database information on disk for increased performance.' .
	    ' If you modify the database directly, you should run this task to clean out the ' .
	    'cache and force Gallery to reload the information from the database.');
	return $info;
    }

    /**
     * @see MaintenanceTask::run
     */
    function run() {
	global $gallery;
	$platform =& $gallery->getPlatform();
	$cacheBaseDir = $gallery->getConfig('data.gallery.cache');

	list ($ret, $module) = GalleryCoreApi::loadPlugin('module', 'core');
	if ($ret) {
	    return array($ret, null, null);
	}

	$cacheDirs = array('entity', 'theme', 'module');
	$success = true;
	foreach ($cacheDirs as $dir) {
	    $dir = sprintf('%s%s', $cacheBaseDir, $dir);
	    if ($platform->file_exists($dir)) {
		if ($platform->recursiveRmDir($dir)) {
		    $details[] = $module->translate(
			array('text' => 'Successfully deleted directory: %s',
			      'arg1' => $dir));
		} else {
		    $success = false;
		    $details[] = $module->translate(
			array('text' => 'Unable to delete directory: %s',
			      'arg1' => $dir));
		}
	    }
	}

	return array(null, $success, $details);
    }
}
?>