i'm trying to accomplish the same thing. Any ideas guys?
the graph validator componet have the type attribute, i think that`s may be our answers. http://livedemo.exadel.com/richfaces-demo/richfaces/graphValidator.jsf?tab=info&cid=8158420
I think that with it we can override the message behaviour and just show one message, the problem is: there no document about this interface. How can i use it?