class.assFormulaQuestionImport.php

Go to the documentation of this file.

<?php
 
class assFormulaQuestionImport extends assQuestionImport
{
    public function fromXML(
        string $importdirectory,
        int $user_id,
        ilQTIItem $item,
        int $questionpool_id,
        ?int $tst_id,
        ?ilObject &$tst_object,
        int &$question_counter,
        array $import_mapping
    ): array {
        // empty session variable for imported xhtml mobs
        ilSession::clear('import_mob_xhtml');
 
        $this->object->setTitle($item->getTitle());
        $this->object->setComment($item->getComment());
        $this->object->setAuthor($item->getAuthor());
        $this->object->setOwner($user_id);
        $this->object->setQuestion($this->QTIMaterialToString($item->getQuestiontext()));
        $this->object->setObjId($questionpool_id);
        if (preg_match_all("/(\\\$v\\d+)/ims", $this->object->getQuestion(), $matches)) {
            foreach ($matches[1] as $variable) {
                $data = unserialize($item->getMetadataEntry($variable), ["allowed_classes" => false]);
                $unit = $this->object->getUnitRepository()->getUnit((int) $data["unitvalue"]);
                $varObj = new assFormulaQuestionVariable($variable, $data["rangemin"], $data["rangemax"], $unit, $data["precision"], $data["intprecision"]);
                $this->object->addVariable($varObj);
            }
        }
        if (preg_match_all("/(\\\$r\\d+)/ims", $this->object->getQuestion(), $rmatches)) {
            foreach ($rmatches[1] as $result) {
                $data = unserialize($item->getMetadataEntry($result), ["allowed_classes" => false]);
                $unit = $this->object->getUnitRepository()->getUnit((int) $data["unitvalue"]);
                if (!is_array($data["rating"])) {
                    $resObj = new assFormulaQuestionResult($result, $data["rangemin"], $data["rangemax"], $data["tolerance"], $unit, $data["formula"], $data["points"], $data["precision"], true);
                } else {
                    $resObj = new assFormulaQuestionResult($result, $data["rangemin"], $data["rangemax"], $data["tolerance"], $unit, $data["formula"], $data["points"], $data["precision"], false, $data["rating"]["sign"], $data["rating"]["value"], $data["rating"]["unit"]);
                }
                if (array_key_exists('resulttype', $data)) {
                    $resObj->setResultType($data["resulttype"]);
                }
                $this->object->addResult($resObj);
                if (is_array($data["resultunits"])) {
                    foreach ($data["resultunits"] as $resu) {
                        $ru = $this->object->getUnitRepository()->getUnit($resu["unitvalue"]);
                        if (is_object($ru)) {
                            $this->object->addResultUnit($resObj, $ru);
                        }
                    }
                }
            }
        }
        $this->object->setPoints($item->getMetadataEntry("points"));
        $this->addGeneralMetadata($item);
        // additional content editing mode information
        $this->object->setAdditionalContentEditingMode(
            $this->fetchAdditionalContentEditingModeInformation($item)
        );
        $this->object->saveToDb();
 
        $this->importUnitsAndUnitCategories($item);
 
        // handle the import of media objects in XHTML code
        $questiontext = $this->object->getQuestion();
        $feedbacksgeneric = $this->getFeedbackGeneric($item);
 
        if (is_array(ilSession::get("import_mob_xhtml"))) {
            foreach (ilSession::get("import_mob_xhtml") as $mob) {
                $importfile = $importdirectory . DIRECTORY_SEPARATOR . $mob["uri"];
                $media_object = ilObjMediaObject::_saveTempFileAsMediaObject(basename($importfile), $importfile, false);
                ilObjMediaObject::_saveUsage($media_object->getId(), "qpl:html", $this->object->getId());
                $questiontext = str_replace("src=\"" . $mob["mob"] . "\"", "src=\"" . "il_" . IL_INST_ID . "_mob_" . $media_object->getId() . "\"", $questiontext);
 
                foreach ($feedbacksgeneric as $correctness => $material) {
                    $feedbacksgeneric[$correctness] = str_replace("src=\"" . $mob["mob"] . "\"", "src=\"" . "il_" . IL_INST_ID . "_mob_" . $media_object->getId() . "\"", $material);
                }
            }
        }
        $this->object->setQuestion(ilRTE::_replaceMediaObjectImageSrc($questiontext, 1));
 
        foreach ($feedbacksgeneric as $correctness => $material) {
            $this->object->feedbackOBJ->importGenericFeedback(
                $this->object->getId(),
                $correctness,
                ilRTE::_replaceMediaObjectImageSrc($material, 1)
            );
        }
 
        // additional content editing mode information
        $this->object->setAdditionalContentEditingMode(
            $this->fetchAdditionalContentEditingModeInformation($item)
        );
        $this->object->saveToDb();
        $this->importSuggestedSolutions($this->object->getId(), $item->suggested_solutions);
        $import_mapping[$item->getIdent()] = $this->addQuestionToParentObjectAndBuildMappingEntry(
            $questionpool_id,
            $tst_id,
            $question_counter,
            $tst_object
        );
        return $import_mapping;
    }
 
    private function importUnitsAndUnitCategories(ilQTIItem $item): void
    {
        $unit_repository = $this->object->getUnitrepository();
        foreach ($item->getUnitCategoryObjets() as $unit_category) {
            $old_category_id = $unit_category->getId();
 
            $unit_category->setQuestionFi($this->object->getId());
            $unit_repository->saveNewUnitCategory($unit_category);
 
            $units = [];
            $base_unit_map = [];
 
            foreach ($item->getUnitObjects() as $unit) {
                if ($unit->getCategory() !== $old_category_id) {
                    continue;
                }
 
                $old_unit_id = $unit->getId();
                $old_base_unit_id = $unit->getBaseUnit();
                $old_unit_factor = $unit->getFactor();
                $old_sequence = $unit->getSequence();
 
                $unit->setCategory($unit_category->getId());
                $unit->setFactor($old_unit_factor);
                $unit->setSequence($old_sequence);
 
                $unit_repository->createNewUnit($unit);
                $unit->setBaseUnit($old_base_unit_id);
 
                $units[] = $unit;
                $base_unit_map[$old_unit_id] = $unit->getId();
 
                $this->mapAssignedVariableUnits($unit, $old_unit_id);
                $this->mapAssignedResultUnits($unit, $old_unit_id);
            }
 
            foreach ($units as $unit) {
                $unit->setBaseUnit($base_unit_map[$unit->getBaseUnit()] ?? 0);
                $unit_repository->saveUnit($unit);
            }
        }
    }
 
    private function mapAssignedVariableUnits(assFormulaQuestionUnit $unit, int $old_unit_id): void
    {
        foreach ($this->object->getVariables() as $variable) {
            $variable_unit = $variable->getUnit();
            if ($variable_unit instanceof assFormulaQuestionUnit && $variable_unit->getId() === $old_unit_id) {
                $variable_unit->setId($unit->getId());
            }
        }
    }
 
    private function mapAssignedResultUnits(assFormulaQuestionUnit $unit, int $old_unit_id): void
    {
        foreach ($this->object->getResults() as $result) {
            $result_unit = $result->getUnit();
            if ($result_unit instanceof assFormulaQuestionUnit && $result_unit->getId() === $old_unit_id) {
                $result_unit->setId($unit->getId());
            }
        }
 
        foreach ($this->object->getAllResultUnits() as $result) {
            foreach ($result as $result_unit) {
                if ($result_unit instanceof assFormulaQuestionUnit && $result_unit->getId() === $old_unit_id) {
                    $result_unit->setId($unit->getId());
                }
            }
        }
    }
}