public DataBag exec(Tuple input) { DataBag resultBag = bagFactory.newDefaultBag(); HashMap<String, Object> map = (HashMap<String, Object>) input.get(0); for (Map.Entry<String, Object> entry : map) { Tuple t = tupleFactory.newTuple(); t.append(entry.getKey()); t.append(entry.getValue().toString()); resultBag.add(t); } return resultBag; }