From what I know; from what has been declared by Israel ... that is exactly the plan.
I don't think that's what they'll do. They're not going to level every building and drive every person into the sea. That would be killing literally millions of people.
What they may well do is push through the entire Gaza Strip, search every building, kill any members of Hamas they find, destroy all munitions, equipment, etc.. And I don't think they'll be too squeamish if some of them are hiding in mosques, either.
But the goal will still be to target combatants and equipment. Obviously, there will always be the issue of some of the Hamas foot soldiers just dropping anything identifying themselves as combatants, etc., but they all will at least be disarmed.