public static Set<Category> getDistinctCategories(Order order) {
Set<Category> catSet = new HashSet<Category>();
for (OrderLine line : order.getOrderLines()) {
catSet.add(line.getItem().getProduct().getCategory());
}
return catSet;
}
public Float getTotal() {
if (orderLines == null || orderLines.isEmpty()) return 0f;
Float total = 0f;
// sum up the quantities
for (OrderLine orderLine : orderLines) {
total += (orderLine.getSubTotal());
}
return total;
}