This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Well lets deal with issue one first, and then see if the second issue persists. The validation framework is not recursive by default which is desirable in some cases. In order to get the behavior you want you need to annotate your sub beans with @Valid.