maybe you thought - extval supports 3rd party annotations (e.g. jpa based validation) and the new typesafe constraint aspects aren't available for 3rd party constraints.
the virtual metadata add-on solves this restriction.
the usage at your properties looks like:
you can find the add-on at:
http://code.google.com/p/os890/source/browse/#svn/trunk/java/web/jsf/extval/virtual_metadata