I certainly believe that no means no and that when anyone says no, that it should stop. Unless of course the no, is part of the script. I seem to remember a scene in the violation series wherre that bitch said no, hope that was part of the script.
On the other hand, I can't imagine how a DA could take a case like that to court. A pornstar being raped on a porn set. That would be a hard case to prove although I'm sure Jenna PR army would take up the cause.
I guess it comes down to, did the whore lie or did the whore get raped. No excuse for rape, on the other hand there is no excuse for crying rape, when rape did not heppen.