74 lines
2.3 KiB
PHP
74 lines
2.3 KiB
PHP
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<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Andreas Fischer <bantu@owncloud.com>
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* @author Christoph Wurst <christoph@winzerhof-wurst.at>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author tbelau666 <thomas.belau@gmx.de>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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*
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC\DB;
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use OCP\IConfig;
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/**
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* Various PostgreSQL specific helper functions.
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*/
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class PgSqlTools {
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/** @var \OCP\IConfig */
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private $config;
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/**
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* @param \OCP\IConfig $config
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*/
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public function __construct(IConfig $config) {
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$this->config = $config;
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}
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/**
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* @brief Resynchronizes all sequences of a database after using INSERTs
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* without leaving out the auto-incremented column.
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* @param \OC\DB\Connection $conn
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* @return null
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*/
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public function resynchronizeDatabaseSequences(Connection $conn) {
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$filterExpression = '/^' . preg_quote($this->config->getSystemValue('dbtableprefix', 'oc_')) . '/';
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$databaseName = $conn->getDatabase();
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$conn->getConfiguration()->setFilterSchemaAssetsExpression($filterExpression);
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foreach ($conn->getSchemaManager()->listSequences() as $sequence) {
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$sequenceName = $sequence->getName();
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$sqlInfo = 'SELECT table_schema, table_name, column_name
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FROM information_schema.columns
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WHERE column_default = ? AND table_catalog = ?';
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$sequenceInfo = $conn->fetchAssoc($sqlInfo, [
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"nextval('$sequenceName'::regclass)",
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$databaseName
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]);
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$tableName = $sequenceInfo['table_name'];
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$columnName = $sequenceInfo['column_name'];
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$sqlMaxId = "SELECT MAX($columnName) FROM $tableName";
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$sqlSetval = "SELECT setval('$sequenceName', ($sqlMaxId))";
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$conn->executeQuery($sqlSetval);
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}
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}
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}
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