apps/dav/appinfo/Migrations/Version20190823065724.php
<?php
/**
* @author Sujith Haridasan <sharidasan@owncloud.com>
*
* @copyright Copyright (c) 2019, ownCloud GmbH
* @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 OCA\dav\Migrations;
use Doctrine\DBAL\Schema\Schema;
use OCP\IDBConnection;
use OCP\Migration\ISchemaMigration;
/**
* Add NULL constraint to fileid column for properties table.
* The fileid column should not accept null values in the properties table.
*/
class Version20190823065724 implements ISchemaMigration {
/** @var IDBConnection */
private $dbConnection;
public function __construct(IDBConnection $dbConnection) {
$this->dbConnection = $dbConnection;
}
public function changeSchema(Schema $schema, array $options) {
$prefix = $options['tablePrefix'];
$table = $schema->getTable("{$prefix}properties");
$column = $table->getColumn('fileid');
/**
* If the fileid column's notnull is set to false then
* make sure before altering the column, that no entry
* in the table has fileid with null. Else the migration
* would fail. The below check does the same.
*/
if ($column->getNotnull() !== true) {
$qb = $this->dbConnection->getQueryBuilder();
$qb->delete('properties')
->where($qb->expr()->isNull('fileid'));
$qb->execute();
$table->changeColumn('fileid', [
'notnull' => true,
]);
}
}
}