Cut the rack into individual ribs, between the meat and the bone.  

Boil them in a stock pot for an hour or until meat is tender. Remove from heat. Drain. Set aside.

In a deep bowl or large measuring cup, drain the pineapple juice, then add the soy sauce and a moderate amount of salt and pepper. Mix thoroughly.

In the same stock pot, put back in the ribs. Add the beans on top and the pineapple. Pour in the mixture over the top. Don't mix. Cover.

Set heat to medium and cook for 30 minutes. Uncover. Spoon some sauce and drizzle it on top. Taste. Add more seasonings if needed.