Spryker DataImport: implement XmlDataReader

DataImportBusinessFactory.php

<?php

// DataImportBusinessFactory.php

protected function createGlossaryImporter()
    {
        $dataImporterConfigurationTransfer = $this->getConfig()->getGlossaryDataImporterConfiguration();
        $xmlReader = new XmlDataReader($dataImporterConfigurationTransfer->getReaderConfiguration()->getFileName());

        $dataImporter = $this->createDataImporter($dataImporterConfigurationTransfer->getImportType(), $xmlReader);
        // ...
    }

XmlDataReader.php

<?php

// XmlDataReader.php

namespace Pyz\Zed\DataImport\Business\Model\DataReader;

use SimpleXMLIterator;
use Spryker\Zed\DataImport\Business\Model\DataReader\DataReaderInterface;
use Spryker\Zed\DataImport\Business\Model\DataSet\DataSet;
use Spryker\Zed\DataImport\Business\Model\DataSet\DataSetInterface;

class XmlDataReader implements DataReaderInterface
{
    /*
     * SimpleXMLIterator
     */
    private $iterator;

    public function __construct(string $filename)
    {
        $this->iterator = new SimpleXMLIterator(file_get_contents($filename));
    }

    public function next()
    {
        $this->iterator->next();
    }

    public function key()
    {
        return $this->iterator->key();
    }

    public function valid()
    {
        return $this->iterator->valid();
    }

    public function rewind()
    {
        $this->iterator->rewind();
    }

    public function current(): DataSetInterface
    {
        $data = $this->iterator->current();

        return new DataSet($data);
    }
}