class.exQuestionPoolImporter.php

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<?php

class exQuestionPoolImporter extends ilXmlImporter
{
    public function importXmlRepresentation(string $a_entity, string $a_id, string $a_xml, ilImportMapping $a_mapping): void
    {
    }

    public function finalProcessing(ilImportMapping $a_mapping): void
    {
        global $DIC; /* @var ILIAS\DI\Container $DIC */

        $maps = $a_mapping->getMappingsOfEntity("components/ILIAS/TestQuestionPool", "qpl");

        foreach ($maps as $old => $new) {
            if ($old != "new_id" && (int) $old > 0) {
                $newQstIds = $a_mapping->getMapping("components/ILIAS/AssessmentQuestion", "qst", $old);

                if ($newQstIds !== false) {
                    $qstIds = explode(":", $newQstIds);
                    foreach ($qstIds as $qId) {
                        $qstInstance = $DIC->question()->getQuestionInstance($qId);
                        $qstInstance->setParentId($new);
                        $qstInstance->save();
                    }
                }

                $qstMappings = $a_mapping->getMappingsOfEntity('components/ILIAS/AssessmentQuestion', 'qst');

                foreach ($qstMappings as $oldQstId => $newQstId) {
                    // process all question ids within the consumer component database,
                    // look for the old qst id and map to the new qst id
                }
            }
        }
    }
}