9.5/_platform_information_8php_source.html

<?php

declare(strict_types = 1);


namespace ‪TYPO3\CMS\Core\Database\Platform;


/*

 * 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!

 */


use Doctrine\DBAL\Platforms\AbstractPlatform;

use Doctrine\DBAL\Platforms\MySqlPlatform;

use Doctrine\DBAL\Platforms\PostgreSqlPlatform;

use Doctrine\DBAL\Platforms\SqlitePlatform;

use Doctrine\DBAL\Platforms\SQLServerPlatform;


class ‪PlatformInformation

{

    protected static ‪$identifierLimits = [

        'mysql' => 63,

        'postgresql' => 63,

        'sqlserver' => 128,

        'sqlite' => 1024, // arbitrary limit, SQLite is only limited by the total statement length

    ];


    protected static ‪$bindParameterLimits = [

        'mysql' => 65535,

        'postgresql' => 34464,

        'sqlserver' => 2100,

        'sqlite' => 999,

    ];


    public static function ‪getMaxIdentifierLength(AbstractPlatform $platform): int

    {

        $platformName = static::getPlatformIdentifier($platform);


        return self::$identifierLimits[$platformName];

    }


    public static function ‪getMaxBindParameters(AbstractPlatform $platform): int

    {

        $platformName = static::getPlatformIdentifier($platform);


        return self::$bindParameterLimits[$platformName];

    }


    protected static function ‪getPlatformIdentifier(AbstractPlatform $platform): string

    {

        if ($platform instanceof MySqlPlatform) {

            return 'mysql';

        }

        if ($platform instanceof PostgreSqlPlatform) {

            return 'postgresql';

        }

        if ($platform instanceof SQLServerPlatform) {

            return 'sqlserver';

        }

        if ($platform instanceof SqlitePlatform) {

            return 'sqlite';

        }

        throw new \RuntimeException(

            'Unsupported Databaseplatform "' . get_class($platform) . '" detected in PlatformInformation',

            1500958070

        );

    }

}