You could use timestamp Longs as keys in the Node and sort the results of a Node.getData() call. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4104496#4104496 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4104496