@SuppressWarnings("unchecked")
public List<BillCategory> getAll(String description) {
try {
return (description.equals(""))
? (List<BillCategory>) system.query(new GetAllBillCategory())
: (List<BillCategory>) system.query(new GetAllBillCategory(description));
} catch (Exception e) {
return new LinkedList<BillCategory>();
// e.printStackTrace();
}
}