public ProductSet query(String productID) throws AppException {
ProductSet objectSet = new ProductSet();
ArrayList<Tuple8<NameValue<String>, NameValue<String>, NameValue<String>, NameValue<Integer>, NameValue<Float>, NameValue<String>, NameValue<Integer>, NameValue<Integer>>> records = null;
try {
productDA = new ProductDA();
records = productDA.readData();
if (records != null) {
for (int i = 0; i < records.size(); i++) {
Tuple8<NameValue<String>, NameValue<String>, NameValue<String>, NameValue<Integer>, NameValue<Float>, NameValue<String>, NameValue<Integer>, NameValue<Integer>> record = records.get(i);
if (productID.equalsIgnoreCase(record.getItem1().getValue())) {