class.ilMetaDataExporter.php

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<?php

declare(strict_types=1);

use ILIAS\MetaData\Services\InternalServices;
use ILIAS\MetaData\XML\Writer\WriterInterface as StandardXMLWriter;
use ILIAS\MetaData\Repository\RepositoryInterface;

class ilMetaDataExporter extends ilXmlExporter
{
    protected StandardXMLWriter $writer;
    protected RepositoryInterface $repository;

    public function init(): void
    {
        global $DIC;

        $services = new InternalServices($DIC);

        $this->writer = $services->xml()->standardWriter();
        $this->repository = $services->repository()->repository();
    }

    public function getXmlRepresentation(string $a_entity, string $a_schema_version, string $a_id): string
    {
        $id = explode(":", $a_id);

        $obj_id = (int) $id[0];
        $sub_id = (int) $id[1];
        $type = (string) $id[2];

        if ($sub_id === 0) {
            $sub_id = $obj_id;
        }

        $md = $this->repository->getMD($obj_id, $sub_id, $type);
        $xml = $this->writer->write($md);

        return trim(str_replace('<?xml version="1.0"?>', '', $xml->asXML()));
    }

    public function getValidSchemaVersions(string $a_entity): array
    {
        return [
            "10.0" => [
                "namespace" => "http://www.ilias.de/Services/MetaData/md/10_0",
                "xsd_file" => "ilias_md_10_0.xsd",
                "min" => "10.0",
                "max" => ""
            ],
            "4.1.0" => [
                "namespace" => "http://www.ilias.de/Services/MetaData/md/4_1",
                "xsd_file" => "ilias_md_4_1.xsd",
                "min" => "4.1.0",
                "max" => "9.99"
            ]
        ];
    }
}