<?php
declare(strict_types=1);
namespace Doctrine\DBAL\Platforms\MySQL\CollationMetadataProvider;
use Doctrine\DBAL\Connection;
use Doctrine\DBAL\Exception;
use Doctrine\DBAL\Platforms\MySQL\CollationMetadataProvider;
/** @internal */
final class ConnectionCollationMetadataProvider implements CollationMetadataProvider
{
/** @var Connection */
private $connection;
public function __construct(Connection $connection)
{
$this->connection = $connection;
}
/** @throws Exception */
public function getCollationCharset(string $collation): ?string
{
$charset = $this->connection->fetchOne(
<<<'SQL'
SELECT CHARACTER_SET_NAME
FROM information_schema.COLLATIONS
WHERE COLLATION_NAME = ?;
SQL
,
[$collation],
);
if ($charset !== false) {
return $charset;
}
return null;
}
}