NullRepository.php

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<?php

declare(strict_types=1);

namespace ILIAS\MetaData\Repository;

use ILIAS\MetaData\Elements\NullSet;
use ILIAS\MetaData\Elements\SetInterface;
use ILIAS\MetaData\Paths\PathInterface;
use ILIAS\MetaData\Elements\RessourceID\RessourceIDInterface;
use ILIAS\MetaData\Search\Clauses\ClauseInterface;
use ILIAS\MetaData\Search\Filters\FilterInterface;

class NullRepository implements RepositoryInterface
{
    public function getMD(int $obj_id, int $sub_id, string $type): SetInterface
    {
        return new NullSet();
    }

    public function getMDOnPath(PathInterface $path, int $obj_id, int $sub_id, string $type): SetInterface
    {
        return new NullSet();
    }

    public function searchMD(
        ClauseInterface $clause,
        ?int $limit,
        ?int $offset,
        FilterInterface ...$filters
    ): \Generator {
        yield from [];
    }

    public function manipulateMD(SetInterface $set): void
    {
    }

    public function transferMD(
        SetInterface $from_set,
        int $to_obj_id,
        int $to_sub_id,
        string $to_type,
        bool $throw_error_if_invalid
    ): void {
    }

    public function deleteAllMD(int $obj_id, int $sub_id, string $type): void
    {
    }
}