This is the code below for many to many that I found on App engine. I
am puzzled about the last line code. I do not know where getKey() gets
it values from in the line food.getFoodFans().add(getKey()); Could
some please explain. Thanks.
Person.java
import java.util.Set;
import com.google.appengine.api.datastore.Key;
// ...
@Persistent
private Set<Key> favoriteFoods;
Food.java
import java.util.Set;
import com.google.appengine.api.datastore.Key;
// ...
@Persistent
private Set<Key> foodFans;
Album.java
// ...
public void addFavoriteFood(Food food) {
favoriteFoods.add(food.getKey());
food.getFoodFans().add(getKey());
}
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