Working with XML

Description

There is a special org.restlet.gwt.resource.XmlRepresentation class that you can leverage to either parse a XML representation received or to serialize a XML DOM. In addition, a shortcut org.restlet.gwt.data.Response#getEntityAsXml() was added to automatically wrap the response entity in a XmlRepresentation instance.

Here is a sample code taken from the example application. The XmlRepresentation gives access to the underlying DOM document via the "getDocument()" method.

Request request = new Request(Method.GET, "http://localhost:8888/test");
// Indicates the client preferences and let the server handle the best representation with content negotiation.
request.getClientInfo().getAcceptedMediaTypes().add(new Preference<MediaType>(MediaType.TEXT_XML));
new Client(Protocol.HTTP).handle(request, new Callback() {
        @Override
        public void onEvent(Request request, Response response) {
                // Get the representation as an XmlRepresentation
                XmlRepresentation rep = response.getEntityAsXml();

                // Loop on the nodes to retrieve the node names and text content.
                NodeList nodes = rep.getDocument().getDocumentElement().getChildNodes();
                for (int i = 0; i < nodes.getLength(); i++) {
                        Node node = nodes.item(i);
                        xmlRoot.addItem(node.getNodeName() + ":" + node.getFirstChild().getNodeValue());
                }
        }
});