Partial Node export

CommandController.php

<?php
namespace Sitegeist\NodeShippingService\Command;

use Neos\ContentRepository\Domain\Service\ImportExport\NodeExportService;
use Neos\ContentRepository\Domain\Service\ImportExport\NodeImportService;
use Neos\Flow\Annotations as Flow;
use Neos\Flow\Cli\CommandController;
use Neos\Neos\Exception as NeosException;
use Neos\Utility\Files;
use Neos\ContentRepository\Domain\Repository\NodeDataRepository;

/**
 * The Site Command Controller
 *
 * @Flow\Scope("singleton")
 */
class NodeCommandController extends CommandController
{
    /**
     * @Flow\Inject
     *
     * @var NodeExportService
     */
    protected $nodeExportService;

    /**
     * @Flow\Inject
     *
     * @var NodeImportService
     */
    protected $nodeImportService;

    /**
     * @var NodeDataRepository
     */
    protected $nodeDataRepository;

    /**
     * Import nodes from xml
     **
     * @param string $nodePath
     * @param string $filename
     * @return void
     */
    public function importCommand($nodePath, $filename)
    {

        if (!file_exists($filename)) {
            throw new NeosException(sprintf('Error: File "%s" does not exist.', $filename), 1540934412);
        }

        $xmlReader = new \XMLReader();
        if ($xmlReader->open($filename, null, LIBXML_PARSEHUGE) === false) {
            throw new NeosException(sprintf('Error: XMLReader could not open "%s".', $filename), 1540934199);
        }

        while ($xmlReader->read()) {
            $this->nodeImportService->import($xmlReader, $nodePath, dirname($filename) . '/Resources');
        }
    }

    /**
     * Export nodes to xml
     *
     * @param string $identifier
     * @param string $filename
     * @param boolean $tidy
     * @param string $nodeTypeFilter
     * @return void
     */
    public function exportCommand($nodePath, $filename, $tidy = true, $nodeTypeFilter = null)
    {
        $resourcesPath = Files::concatenatePaths([dirname($filename), 'Resources']);
        Files::createDirectoryRecursively($resourcesPath);

        $xmlWriter = new \XMLWriter();
        $xmlWriter->openUri($filename);
        $xmlWriter->setIndent($tidy);

        $this->nodeExportService->export($nodePath, 'live', $xmlWriter, false, false, $resourcesPath, $nodeTypeFilter);

        $xmlWriter->flush();
    }
}