public int size() {
int size = cleared ? 0 : snapshot.size();
for (Map.Entry<RowKey, AssociationOperation> op : currentState.entrySet()) {
switch (op.getValue().getType()) {
case PUT:
case PUT_NULL:
if (cleared || !snapshot.containsKey(op.getKey())) {
size++;
}
break;
case REMOVE:
if (!cleared && snapshot.containsKey(op.getKey())) {
size--;
}
break;
}
}
return size;
}
