Custom port serialization

MyCustomPortObjectSerializer.java

public class MyCustomPortObjectSerializer extends PortObjectSerializer<MyCustomPortObject>
{

	private static final String FILE_NAME = "config.xml";
	
	

	@Override
	public void savePortObject(MyCustomPortObject portObject, PortObjectZipOutputStream out,
			ExecutionMonitor exec) throws IOException, CanceledExecutionException
	{
		out.putNextEntry(new ZipEntry(FILE_NAME));

		try
		{
      // Create the content to serialize, in my case I save my port data in XML
			String xm = portObject.getXml();

			out.write(xml.getBytes());
		} catch (Exception e)
		{
			throw new IOException(e);
		}
		out.closeEntry();

	}

	@Override
	public MyCustomPortObject loadPortObject(PortObjectZipInputStream in, PortObjectSpec spec,
			ExecutionMonitor exec) throws IOException, CanceledExecutionException
	{
		String entryName = in.getNextEntry().getName();

		MyCustomPortObject obj = null;
		
		if (entryName.equals(FILE_NAME))
		{
			try
			{
				DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
				DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
				Document doc = dBuilder.parse(in);
				doc.getDocumentElement().normalize();
				
				
				obj = new MyCustomPortObject(MyCustomPortObjectFactory.create(doc));
			} catch (Exception e)
			{
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			in.close();

		} else if (!entryName.equals(FILE_NAME))
		{
			throw new IOException("Found unexpected zip entry " + entryName + "! Expected " + FILE_NAME);
		}

		return obj;
	}

}