Invoking server side code


The Restlet API for GWT is a subset of the Restlet API. It is a subset because, as mentioned above, parts of the Restlet API have been deleted, where they depend on Java platform features not available in the Javascript environment.

It is also a subset because it is fully (and only) asynchronous.  This is necessary to conform to the behavior of the XmlHttpRequest-based Client, as well as the structures of the unthreaded Javascript environment.

Here is a snippet of code (from the downloadable example below) showing briefly how to instantiate a ClientResource and make an asynchronous GET call:

// Add behaviour on the close button.
closeButton.addClickHandler(new ClickHandler() {
    public void onClick(ClickEvent event) {
        // Add an AJAX call to the server
        ClientResource r = new ClientResource("/ping");

        // Set the callback object invoked when the response is received.
        r.setOnResponse(new Uniform() {
            public void handle(Request request, Response response) {
                try {
                } catch (IOException e) {