Searcher.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\MetaData\Services\Search;
 
use ILIAS\MetaData\Elements\RessourceID\RessourceIDInterface;
use ILIAS\MetaData\Search\Clauses\FactoryInterface as ClauseFactory;
use ILIAS\MetaData\Search\Clauses\ClauseInterface;
use ILIAS\MetaData\Search\Filters\FilterInterface;
use ILIAS\MetaData\Search\Filters\FactoryInterface as FilterFactory;
use ILIAS\MetaData\Repository\RepositoryInterface;
use ILIAS\MetaData\Search\Filters\Placeholder;
 
class Searcher implements SearcherInterface
{
    protected ClauseFactory $clause_factory;
    protected FilterFactory $filter_factory;
    protected RepositoryInterface $repository;
 
    public function __construct(
        ClauseFactory $clause_factory,
        FilterFactory $filter_factory,
        RepositoryInterface $repository
    ) {
        $this->clause_factory = $clause_factory;
        $this->filter_factory = $filter_factory;
        $this->repository = $repository;
    }
 
    public function getClauseFactory(): ClauseFactory
    {
        return $this->clause_factory;
    }
 
    public function getFilter(
        int|Placeholder $obj_id = Placeholder::ANY,
        int|Placeholder $sub_id = Placeholder::ANY,
        string|Placeholder $type = Placeholder::ANY
    ): FilterInterface {
        if ($sub_id === 0) {
            $sub_id = Placeholder::OBJ_ID;
        }
        return $this->filter_factory->get($obj_id, $sub_id, $type);
    }
 
    public function execute(
        ClauseInterface $clause,
        ?int $limit,
        ?int $offset,
        FilterInterface ...$filters
    ): \Generator {
        yield from $this->repository->searchMD(
            $clause,
            $limit,
            $offset,
            ...$filters
        );
    }
}