Neos\ContentRepository\Domain\Service\ImportExport\NodeImportService::convertElementToValue PHP Method

    protected function convertElementToValue(\XMLReader $reader, $currentType, $currentEncoding, $currentClassName, $currentNodeIdentifier, $currentProperty)
    {
        switch ($currentType) {
            case 'object':
                if ($currentClassName === 'DateTime') {
                    $stringValue = trim($reader->value);
                    $value = $this->propertyMapper->convert($stringValue, $currentClassName, $this->propertyMappingConfiguration);
                    if ($this->propertyMapper->getMessages()->hasErrors()) {
                        throw new ImportException(sprintf('Could not convert element <%s> to DateTime for node %s', $currentProperty, $currentNodeIdentifier), 1472992032);
                    }
                } elseif ($currentEncoding === 'json') {
                    $decodedJson = json_decode($reader->value, true);
                    if (json_last_error() !== JSON_ERROR_NONE) {
                        throw new ImportException(sprintf('Could not parse encoded JSON in element <%s> for node %s: %s', $currentProperty, $currentNodeIdentifier, json_last_error_msg()), 1472992033);
                    }
                    $value = $this->propertyMapper->convert($decodedJson, $currentClassName, $this->propertyMappingConfiguration);
                    if ($this->propertyMapper->getMessages()->hasErrors()) {
                        throw new ImportException(sprintf('Could not convert element <%s> to %s for node %s', $currentProperty, $currentClassName, $currentNodeIdentifier), 1472992034);
                    }
                } else {
                    throw new ImportException(sprintf('Unsupported encoding "%s"', $currentEncoding), 1404397061);
                }
                break;
            case 'string':
                $value = $reader->value;
                break;
            default:
                $value = $this->propertyMapper->convert($reader->value, $currentType, $this->propertyMappingConfiguration);
                if ($this->propertyMapper->getMessages()->hasErrors()) {
                    throw new ImportException(sprintf('Could not convert element <%s> to %s for node %s', $currentProperty, $currentType, $currentNodeIdentifier), 1472992035);
                }
                return $value;
        }
        $this->persistEntities($value);
        return $value;
    }