NullTokenHandler.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\MetaData\OERExposer\OAIPMH\FlowControl;
 
use ILIAS\MetaData\OERExposer\OAIPMH\Requests\RequestInterface;
use ILIAS\MetaData\OERExposer\OAIPMH\Requests\NullRequest;
 
class NullTokenHandler implements TokenHandlerInterface
{
    public function generateToken(
        int $offset,
        ?\DateTimeImmutable $from_date,
        ?\DateTimeImmutable $until_date
    ): string {
        return '';
    }
 
    public function isTokenValid(string $token): bool
    {
        return false;
    }
 
    public function appendArgumentsFromTokenToRequest(
        RequestInterface $request,
        string $token
    ): RequestInterface {
        return new NullRequest();
    }
 
    public function getOffsetFromToken(string $token): int
    {
        return 0;
    }
}