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<?php
declare(strict_types=1);
/*
* @copyright 2021 Christoph Wurst <christoph@winzerhof-wurst.at>
*
* @author 2021 Christoph Wurst <christoph@winzerhof-wurst.at>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* 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
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
namespace OC\DB;
use Doctrine\DBAL\Exception;
use Doctrine\DBAL\ParameterType;
use Doctrine\DBAL\Statement;
use OCP\DB\IPreparedStatement;
use OCP\DB\IResult;
use PDO;
/**
* Adapts our public API to what doctrine/dbal exposed with 2.6
*
* The old dbal statement had stateful methods e.g. to fetch data from an executed
* prepared statement. To provide backwards compatibility to apps we need to make
* this class stateful. As soon as those now deprecated exposed methods are gone,
* we can limit the API of this adapter to the methods that map to the direct dbal
* methods without much magic.
*/
class PreparedStatement implements IPreparedStatement {
/** @var Statement */
private $statement;
/** @var IResult|null */
private $result;
public function __construct(Statement $statement) {
$this->statement = $statement;
}
public function closeCursor(): bool {
$this->getResult()->closeCursor();
return true;
}
public function fetch(int $fetchMode = PDO::FETCH_ASSOC) {
return $this->getResult()->fetch($fetchMode);
}
public function fetchAll(int $fetchMode = PDO::FETCH_ASSOC): array {
return $this->getResult()->fetchAll($fetchMode);
}
public function fetchColumn() {
return $this->getResult()->fetchOne();
}
public function fetchOne() {
return $this->getResult()->fetchOne();
}
public function bindValue($param, $value, $type = ParameterType::STRING): bool {
return $this->statement->bindValue($param, $value, $type);
}
public function bindParam($param, &$variable, $type = ParameterType::STRING, $length = null): bool {
return $this->statement->bindParam($param, $variable, $type, $length);
}
public function execute($params = null): IResult {
return ($this->result = new ResultAdapter($this->statement->execute($params)));
}
public function rowCount(): int {
return $this->getResult()->rowCount();
}
private function getResult(): IResult {
if ($this->result !== null) {
return $this->result;
}
throw new Exception("You have to execute the prepared statement before accessing the results");
}
}
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