40 lines
1.2 KiB
PHP
40 lines
1.2 KiB
PHP
<?php
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/**
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* Copyright (c) 2013 Bart Visscher <bartv@thisnet.nl>
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* Copyright (c) 2014 Andreas Fischer <bantu@owncloud.com>
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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namespace OC\DB;
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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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/**
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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 $conn) {
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$databaseName = $conn->getDatabase();
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foreach ($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, array(
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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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