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<?php
/**
* @author Bart Visscher <bartv@thisnet.nl>
* @author Joas Schilling <nickvergessen@owncloud.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <icewind@owncloud.com>
* @author Thomas Müller <thomas.mueller@tmit.eu>
*
* @copyright Copyright (c) 2016, 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\DB;
class AdapterSqlite extends Adapter {
/**
* @param string $tableName
*/
public function lockTable($tableName) {
$this->conn->executeUpdate('BEGIN EXCLUSIVE TRANSACTION');
}
public function unlockTable() {
$this->conn->executeUpdate('COMMIT TRANSACTION');
}
public function fixupStatement($statement) {
$statement = preg_replace('( I?LIKE \?)', '$0 ESCAPE \'\\\'', $statement);
$statement = preg_replace('/`(\w+)` ILIKE \?/', 'LOWER($1) LIKE LOWER(?)', $statement);
$statement = str_replace( '`', '"', $statement );
$statement = str_ireplace( 'NOW()', 'datetime(\'now\')', $statement );
$statement = str_ireplace('GREATEST(', 'MAX(', $statement);
$statement = str_ireplace( 'UNIX_TIMESTAMP()', 'strftime(\'%s\',\'now\')', $statement );
return $statement;
}
/**
* Insert a row if the matching row does not exists.
*
* @param string $table The table name (will replace *PREFIX* with the actual prefix)
* @param array $input data that should be inserted into the table (column name => value)
* @param array|null $compare List of values that should be checked for "if not exists"
* If this is null or an empty array, all keys of $input will be compared
* Please note: text fields (clob) must not be used in the compare array
* @return int number of inserted rows
* @throws \Doctrine\DBAL\DBALException
*/
public function insertIfNotExist($table, $input, array $compare = null) {
if (empty($compare)) {
$compare = array_keys($input);
}
$fieldList = '`' . implode('`,`', array_keys($input)) . '`';
$query = "INSERT INTO `$table` ($fieldList) SELECT "
. str_repeat('?,', count($input)-1).'? '
. " WHERE NOT EXISTS (SELECT 1 FROM `$table` WHERE ";
$inserts = array_values($input);
foreach($compare as $key) {
$query .= '`' . $key . '`';
if (is_null($input[$key])) {
$query .= ' IS NULL AND ';
} else {
$inserts[] = $input[$key];
$query .= ' = ? AND ';
}
}
$query = substr($query, 0, strlen($query) - 5);
$query .= ')';
return $this->conn->executeUpdate($query, $inserts);
}
}
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