private static Channel loadChannel(InputStream in) throws Exception {
SAXBuilder builder = new SAXBuilder(false);
Document doc = builder.build(in);
Element root = doc.getRootElement();
String version = root.getAttributeValue("version");
if (!"1.0".equals(version)) throw new Exception("Invalid file version");
String type = root.getAttributeValue("type");
Class clazz = Class.forName(type);
if (!Channel.class.isAssignableFrom(clazz)) throw new Exception("Invalid channel type");
Element elSettings = root.getChild("settings");
return SimpleBeanToXML.xmlToObject(elSettings, clazz, false);
}
private static void saveChannel(Channel channel, OutputStream out) throws Exception {
Element root = new Element("channel");
root.setAttribute("version", "1.0");
root.setAttribute("type", channel.getClass().getName());
Element elSettings = new Element("settings");
SimpleBeanToXML.objectToXml(elSettings, channel);
root.addContent(elSettings);
Document doc = new Document();
doc.setRootElement(root);
XMLOutputter xout = new XMLOutputter(Format.getPrettyFormat());
xout.output(doc, out);
}