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<?php
/**
* @author Joas Schilling <nickvergessen@owncloud.com>
* @author Morris Jobke <hey@morrisjobke.de>
*
* @copyright Copyright (c) 2015, ownCloud, Inc.
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\Repair;
use OC\DB\Connection;
use OC\Hooks\BasicEmitter;
use OC\RepairStep;
/**
* Class RepairConfig
*
* @package OC\Repair
*/
class CleanTags extends BasicEmitter implements RepairStep {
/** @var Connection */
protected $connection;
/**
* @param Connection $connection
*/
public function __construct(Connection $connection) {
$this->connection = $connection;
}
/**
* @return string
*/
public function getName() {
return 'Clean tags and favorites';
}
/**
* Updates the configuration after running an update
*/
public function run() {
$this->deleteOrphanFileEntries();
$this->deleteOrphanTagEntries();
$this->deleteOrphanCategoryEntries();
}
/**
* Delete tag entries for deleted files
*/
protected function deleteOrphanFileEntries() {
$this->deleteOrphanEntries(
'%d tags for delete files have been removed.',
'*PREFIX*vcategory_to_object', 'objid',
'*PREFIX*filecache', 'fileid', 'path_hash'
);
}
/**
* Delete tag entries for deleted tags
*/
protected function deleteOrphanTagEntries() {
$this->deleteOrphanEntries(
'%d tag entries for deleted tags have been removed.',
'*PREFIX*vcategory_to_object', 'categoryid',
'*PREFIX*vcategory', 'id', 'uid'
);
}
/**
* Delete tags that have no entries
*/
protected function deleteOrphanCategoryEntries() {
$this->deleteOrphanEntries(
'%d tags with no entries have been removed.',
'*PREFIX*vcategory', 'id',
'*PREFIX*vcategory_to_object', 'categoryid', 'type'
);
}
/**
* Deletes all entries from $deleteTable that do not have a matching entry in $sourceTable
*
* A query joins $deleteTable.$deleteId = $sourceTable.$sourceId and checks
* whether $sourceNullColumn is null. If it is null, the entry in $deleteTable
* is being deleted.
*
* @param string $repairInfo
* @param string $deleteTable
* @param string $deleteId
* @param string $sourceTable
* @param string $sourceId
* @param string $sourceNullColumn If this column is null in the source table,
* the entry is deleted in the $deleteTable
*/
protected function deleteOrphanEntries($repairInfo, $deleteTable, $deleteId, $sourceTable, $sourceId, $sourceNullColumn) {
$qb = $this->connection->createQueryBuilder();
$qb->select('d.`' . $deleteId . '`')
->from('`' . $deleteTable . '`', 'd')
->leftJoin('d', '`' . $sourceTable . '`', 's', 'd.`' . $deleteId . '` = s.`' . $sourceId . '`')
->where(
'd.`type` = ' . $qb->expr()->literal('files')
)
->andWhere(
$qb->expr()->isNull('s.`' . $sourceNullColumn . '`')
);
$result = $qb->execute();
$orphanItems = array();
while ($row = $result->fetch()) {
$orphanItems[] = (int) $row[$deleteId];
}
if (!empty($orphanItems)) {
$orphanItemsBatch = array_chunk($orphanItems, 200);
foreach ($orphanItemsBatch as $items) {
$qb->delete('`' . $deleteTable . '`')
->where(
'`type` = ' . $qb->expr()->literal('files')
)
->andWhere($qb->expr()->in('`' . $deleteId . '`', ':ids'));
$qb->setParameter('ids', $items, \Doctrine\DBAL\Connection::PARAM_INT_ARRAY);
$qb->execute();
}
}
if ($repairInfo) {
$this->emit('\OC\Repair', 'info', array(sprintf($repairInfo, sizeof($orphanItems))));
}
}
}
|
