@Override
public T map(Iterable<TupleN> input) {
Collection[] collections = new Collection[ptypes.length];
for (int i = 0; i < ptypes.length; i++) {
collections[i] = Lists.newArrayList();
}
for (TupleN t : input) {
for (int i = 0; i < ptypes.length; i++) {
if (t.get(i) != null) {
collections[i].add(ptypes[i].getDetachedValue(t.get(i)));
break;
}
}
}
return (T) factory.makeTuple(collections);
}
@Override
public TupleN map(T input) {
Object[] v = new Object[size];
v[index] = input;
return TupleN.of(v);
}