What is the ruling on someone who swore an oath of divorce not to eat in a specific restaurant, but did not specify theطلاق (irrevocability/absolute nature) of his oath, and then ate there?

There are two scenarios for someone who conditioned his wife's divorce on eating from a specific restaurant:

1. If, when making the oath, he intended in his heart a specific time or a specific type of food; then his oath is restricted by what he intended, and the divorce does not occur unless his intention is realized. 2. If his intention was unrestricted, meaning he did not intend a specific time or a specific food; then the divorce occurs whenever she eats from the restaurant's food, whatever the food may be, and at any time.