RESTFul validation using Spring

Since last couple of week I was trying to figure “How RESTFul validation should be done in Spring”. Also how to approach exception handling we do not want to mandate Spring MVC usage at as view layer”. There is not enough article over internet on approach. I can see a lot of developer seeking information/help from Spring forum but there is long silence over this topic in forum.

http://forum.springsource.org/showthread.php?116933-RESTFul-Validation-approach
https://jira.springsource.org/browse/SPR-6709
http://forum.springsource.org/showthread.php?108760-Validation-in-REST-API

Finally I decided to evaluate couple of approach to nail down above stated problem and its benefit/issue. I was able implement custom RESTFul validation using spring validator as core. In blog I will discuss one possible approach. I would welcome your comment and better approach to achieve this feature. More

How to use multiple persistence.xml in SOA

Couple of days back I was stuck into problem on how to use multiple persistance.xml in SOA (using Spring + JPA). It took me two long day to resolve the problem, hence thought it will be worth to share information. There may be better way to deal with this problem and comments\approaches are most welcome.

Scenario: We have two component SSO (Single Sign On including secirity feature) and Payment. Core component has responsiblity to provide core API, life cycle management, common utility etc. In production you can deploy SSO and Payment both component on single/different machine pointing to same DB or two database. Hence we need to have persistence.xml configured for each component.

I will explain problem is steps and we will come to solution working over different issue you can encounter (Go to Link).