Generate UUID with GWT

Question

Is there any way to generate UUID with GWT?

Answer 1

You can generate an UUID in GWT by reusing a Javascript UUID implementation an wrapping it using JSNI:

public native static String uuid() /*-{
    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g,
            function(c) {
                var r = Math.random() * 16 | 0, v = c == 'x' ? r
                        : (r & 0x3 | 0x8);
                return v.toString(16);
            });
}-*/;

If you want just an unique ID (not an UUID) to use in your GWT elements, use:

String id = DOM.createUniqueId();

Answer 2

According to this page:

http://2ality.blogspot.com/2009/01/uuids-for-gwt.html

This UUID generator works with GWT:

http://www.pst.ifi.lmu.de/%7Erauschma/download/UUID.java