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<?php
declare(strict_types=1);
/*
* This file is part of the TYPO3 CMS project.
*
* It is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, either version 2
* of the License, or any later version.
*
* For the full copyright and license information, please read the
* LICENSE.txt file that was distributed with this source code.
*
* The TYPO3 project - inspiring people to share!
*/
namespace TYPO3\CMS\Core\Database\Driver;
use Doctrine\DBAL\Driver\PDO\Exception;
use Doctrine\DBAL\Driver\Result as ResultInterface;
/**
* TYPO3's custom Result object for Database statements based on Doctrine DBAL.
*
* This is a lowlevel wrapper around PDO for TYPO3 based drivers to ensure mapResourceToString()
* is called when retrieving data. This isn't the actual Result object (Doctrine\DBAL\Result) which
* is used in user-land code.
*
* Because Doctrine's DBAL Driver Result object is marked as final, all logic is copied from the ResultInterface.
*
* @internal this implementation is not part of TYPO3's Public API.
*/
class DriverResult implements ResultInterface
{
private \PDOStatement $statement;
/**
* @internal The result can be only instantiated by its driver connection or statement.
*/
public function __construct(\PDOStatement $statement)
{
$this->statement = $statement;
}
/**
* {@inheritDoc}
*/
public function fetchNumeric()
{
return $this->fetch(\PDO::FETCH_NUM);
}
/**
* {@inheritDoc}
*/
public function fetchAssociative()
{
return $this->fetch(\PDO::FETCH_ASSOC);
}
/**
* {@inheritDoc}
*/
public function fetchOne()
{
return $this->fetch(\PDO::FETCH_COLUMN);
}
/**
* {@inheritDoc}
*/
public function fetchAllNumeric(): array
{
return $this->fetchAll(\PDO::FETCH_NUM);
}
/**
* {@inheritDoc}
*/
public function fetchAllAssociative(): array
{
return $this->fetchAll(\PDO::FETCH_ASSOC);
}
/**
* {@inheritDoc}
*/
public function fetchFirstColumn(): array
{
return $this->fetchAll(\PDO::FETCH_COLUMN);
}
public function rowCount(): int
{
try {
return $this->statement->rowCount();
} catch (\PDOException $exception) {
throw Exception::new($exception);
}
}
public function columnCount(): int
{
try {
return $this->statement->columnCount();
} catch (\PDOException $exception) {
throw Exception::new($exception);
}
}
public function free(): void
{
$this->statement->closeCursor();
}
/**
* @return mixed|false
*
* @throws Exception
*/
private function fetch(int $mode)
{
try {
$result = $this->statement->fetch($mode);
$result = $this->mapResourceToString($result);
return $result;
} catch (\PDOException $exception) {
throw Exception::new($exception);
}
}
/**
* @return list<mixed>
*
* @throws Exception
*/
private function fetchAll(int $mode): array
{
try {
$data = $this->statement->fetchAll($mode);
} catch (\PDOException $exception) {
throw Exception::new($exception);
}
assert(is_array($data));
return array_map([$this, 'mapResourceToString'], $data);
}
/**
* Map resources to string like is done for e.g. in mysqli driver
*
* @param mixed $record
* @return mixed
*/
protected function mapResourceToString($record)
{
if (is_array($record)) {
return array_map(
static function ($value) {
if (is_resource($value)) {
$value = stream_get_contents($value);
}
return $value;
},
$record
);
}
return $record;
}
}