public static boolean isInvoiceAlreadyStored(Invoice invoice) {
List<Invoice> results =
getObjectsByRow(Invoice.class, "po_number", EqualityRelation.E, invoice.getPoNumber());
boolean emptySet = results.isEmpty();
if (!emptySet) {
Invoice oldInvoice = results.get(0);
invoice.setId(oldInvoice.getId());
saveOrUpdateInvoice(invoice);
return true;
}
return false;
}
private static void saveOrUpdateInvoice(Invoice invoice) {
updateOrStoreObject(invoice);
Customer customer = invoice.getCustomer();
for (Address address : customer.getAddresses()) {
updateOrStoreObject(address);
}
updateOrStoreObject(customer);
ProductGroup group = invoice.getProductGroup();
group.setInvoice(invoice);
updateOrStoreObject(group);
for (ProductLine line : group.getProductLines()) {
line.setProductPrice(line.getProduct().getPrice());
line.setProductGroup(invoice.getProductGroup());
updateOrStoreObject(line);
}
}