<?php
declare(strict_types=1);
namespace Doctrine\DBAL\Platforms\MySQL\CollationMetadataProvider;
use Doctrine\DBAL\Platforms\MySQL\CollationMetadataProvider;
use function array_key_exists;
/** @internal */
final class CachingCollationMetadataProvider implements CollationMetadataProvider
{
/** @var CollationMetadataProvider */
private $collationMetadataProvider;
/** @var array<string,?string> */
private $cache = [];
public function __construct(CollationMetadataProvider $collationMetadataProvider)
{
$this->collationMetadataProvider = $collationMetadataProvider;
}
public function getCollationCharset(string $collation): ?string
{
if (array_key_exists($collation, $this->cache)) {
return $this->cache[$collation];
}
return $this->cache[$collation] = $this->collationMetadataProvider->getCollationCharset($collation);
}
}