@Override
public DataBag exec(Tuple input) throws ExecException, FrontendException {
if (input == null) {
return null;
}
Iterable<Pair<Integer, Double>> vector = elgen.apply(input);
List<Tuple> result = new ArrayList<Tuple>(N);
for (Pair<Integer, Double> el : ordering.greatestOf(vector, N)) {
result.add(tfac.newTuple(el.getFirst()));
}
return bfac.newDefaultBag(result);
}
public DataBag exec(Tuple input) throws IOException {
try {
DataBag bag = BagFactory.getInstance().newDefaultBag();
for (int i = 0; i < input.size(); i++) {
final Object object = input.get(i);
if (object instanceof Tuple) {
for (int j = 0; j < ((Tuple) object).size(); j++) {
Tuple tp2 = TupleFactory.getInstance().newTuple(1);
tp2.set(0, ((Tuple) object).get(j));
bag.add(tp2);
}
} else {
Tuple tp2 = TupleFactory.getInstance().newTuple(1);
tp2.set(0, object);
bag.add(tp2);
}
}
return bag;
} catch (Exception ee) {
throw new RuntimeException("Error while creating a bag", ee);
}
}
