Application: gvSIG desktop

import java.io.BufferedReader;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import org.exolab.castor.xml.Marshaller;

import com.iver.cit.gvsig.fmap.MapContext;

import com.iver.utiles.xml.XMLEncodingUtils;

import com.iver.utiles.xmlEntity.generate.XmlTag;

 * Class with the responsability of persist topologies and their elements.

	public static final String FILE_PARAM_NAME = "file";

	public static final String DEFAULT_ENCODING = "UTF-8";

	private static Logger logger = Logger.getLogger(TopologyPersister.class

			.getName());

	/**

	 * Persist a topology to the specified file.

	 * 

	 * @param topology

	 *            topology to persist

	 * @param storageParams

	 *            map with params to storage

	 */

	public static void persist(Topology topology, Map<String, ?> storageParams) {

		try {

			String fileName = (String) storageParams.get(FILE_PARAM_NAME);

			File file = new File(fileName);

			FileOutputStream fos = new FileOutputStream(file.getAbsolutePath());

			OutputStreamWriter writer = new OutputStreamWriter(fos,

					DEFAULT_ENCODING);

			Marshaller m = new Marshaller(writer);

			m.setEncoding(DEFAULT_ENCODING);

			XMLEntity xml = topology.getXMLEntity();

			xml.putProperty("followHeaderEncoding", true, false);

			m.marshal(xml.getXmlTag());

		} catch (Exception e) {

			logger.error("error guardando la topologia " + topology.getName(),

					e);

		}

	public static Topology load(MapContext mapContext, Map <String, ?> storageParams) {

		String fileName = (String) storageParams.get(FILE_PARAM_NAME);

		try {

			File file = new File(fileName);

			BufferedReader reader =null;

			String encoding = XMLEncodingUtils.getEncoding(file);

			FileInputStream stream = new FileInputStream(file);

			reader = new BufferedReader(new InputStreamReader(stream, encoding));

			XmlTag tag = (XmlTag) XmlTag.unmarshal(reader);

			XMLEntity xml=new XMLEntity(tag);

			return Topology.createFromXML(mapContext, xml);

		} catch(Exception e) {

			logger.error("Error cargando la topologia del recurso "+fileName, e);

		} 

	public static ITopologyErrorContainer createErrorContainerFromXML(

			XMLEntity xml) {

		if (xml.contains("className")) {

			}

		} else {