An Java JDBC compliant driver that connects to a remote database via url (http) connection, communicating through a server-side script (.asp,.php,.jsf etc). Useful if you like to access locally (java, SQuirreL, eclipse) a database on your web site.
Server and Client XML exchange via reflection. AJAX,PHP,JAVA and PERL reflection helper classes. Full NIO server for JAVA and RMI service. Basically create a PlugIN and let reflection do the work for you.