owncloud/core

<?php
/**
 * @author Thomas Müller <thomas.mueller@tmit.eu>
 *
 * @copyright Copyright (c) 2018, 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 OC\DB;

use Doctrine\DBAL\Schema\Schema;

class PostgreSqlMigrator extends Migrator {
    /**
     * @param Schema $targetSchema
     * @param \Doctrine\DBAL\Connection $connection
     * @return \Doctrine\DBAL\Schema\SchemaDiff
     */
    protected function getDiff(Schema $targetSchema, \Doctrine\DBAL\Connection $connection) {
        $schemaDiff = parent::getDiff($targetSchema, $connection);

        foreach ($schemaDiff->changedTables as $tableDiff) {
            // fix default value in brackets - pg 9.4 is returning a negative default value in ()
            // see https://github.com/doctrine/dbal/issues/2427
            foreach ($tableDiff->changedColumns as $column) {
                $column->changedProperties = \array_filter($column->changedProperties, function ($changedProperties) use ($column) {
                    if ($changedProperties !== 'default') {
                        return true;
                    }
                    $fromDefault = $column->fromColumn->getDefault();
                    $toDefault = $column->column->getDefault();
                    $fromDefault = \trim($fromDefault, "()");

                    // by intention usage of !=
                    return $fromDefault != $toDefault;
                });
            }
        }

        return $schemaDiff;
    }
}