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<?php
/**
* Copyright (c) 2012 Robin Appelman <icewind@owncloud.com>
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Files\Cache;
/**
* Provide read only support for the old filecache
*/
class Legacy {
private $user;
private $cacheHasItems = null;
public function __construct($user) {
$this->user = $user;
}
/**
* get the numbers of items in the legacy cache
*
* @return int
*/
function getCount() {
$query = \OC_DB::prepare('SELECT COUNT(`id`) AS `count` FROM `*PREFIX*fscache` WHERE `user` = ?');
$result = $query->execute(array($this->user));
if ($row = $result->fetchRow()) {
return $row['count'];
} else {
return 0;
}
}
/**
* check if a legacy cache is present and holds items
*
* @return bool
*/
function hasItems() {
if (!is_null($this->cacheHasItems)) {
return $this->cacheHasItems;
}
try {
$query = \OC_DB::prepare('SELECT `id` FROM `*PREFIX*fscache` WHERE `user` = ? LIMIT 1');
} catch (\Exception $e) {
$this->cacheHasItems = false;
return false;
}
try {
$result = $query->execute(array($this->user));
} catch (\Exception $e) {
$this->cacheHasItems = false;
return false;
}
if ($result === false || property_exists($result, 'error_message_prefix')) {
$this->cacheHasItems = false;
return false;
}
$this->cacheHasItems = (bool)$result->fetchRow();
return $this->cacheHasItems;
}
/**
* get an item from the legacy cache
*
* @param string|int $path
* @return array
*/
function get($path) {
if (is_numeric($path)) {
$query = \OC_DB::prepare('SELECT * FROM `*PREFIX*fscache` WHERE `id` = ?');
} else {
$query = \OC_DB::prepare('SELECT * FROM `*PREFIX*fscache` WHERE `path` = ?');
}
$result = $query->execute(array($path));
$data = $result->fetchRow();
$data['etag'] = $this->getEtag($data['path']);
return $data;
}
function getEtag($path) {
list(, $user, , $relativePath) = explode('/', $path, 4);
if (is_null($relativePath)) {
$relativePath = '';
}
$query = \OC_DB::prepare('SELECT `propertyvalue` FROM `*PREFIX*properties` WHERE `userid` = ? AND propertypath = ? AND propertyname = "{DAV:}getetag"');
$result = $query->execute(array($user, '/' . $relativePath));
if ($row = $result->fetchRow()) {
return trim($row['propertyvalue'], '"');
} else {
return '';
}
}
/**
* get all child items of an item from the legacy cache
*
* @param int $id
* @return array
*/
function getChildren($id) {
$query = \OC_DB::prepare('SELECT * FROM `*PREFIX*fscache` WHERE `parent` = ?');
$result = $query->execute(array($id));
$data = $result->fetchAll();
foreach ($data as $i => $item) {
$data[$i]['etag'] = $this->getEtag($item['path']);
}
return $data;
}
}
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