RootLevelRestriction.php

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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\Query\Restriction;
 
use ‪TYPO3\CMS\Core\Database\Query\Expression\CompositeExpression;
use ‪TYPO3\CMS\Core\Database\Query\Expression\ExpressionBuilder;
 
class ‪RootLevelRestriction implements ‪QueryRestrictionInterface
{
    protected ‪$tableNames;
 
    public function ‪__construct(array ‪$tableNames = [])
    {
        $this->tableNames = ‪$tableNames;
    }
 
    public function ‪buildExpression(array $queriedTables, ‪ExpressionBuilder $expressionBuilder): ‪CompositeExpression
    {
        $constraints = [];
        foreach ($queriedTables as $tableAlias => $tableName) {
            if (empty($this->tableNames) || in_array($tableAlias, $this->tableNames, true)) {
                $constraints[] = $expressionBuilder->‪eq(
                    $tableAlias . '.pid',
                    0
                );
            }
        }
        return $expressionBuilder->‪and(...$constraints);
    }
}