title: Validation for generated JAXB Classes (JSR 303 / Spring)
body: <p>I Generated domain objects from schema (request &amp; response) using JAXB (maven-jaxb2-plugin)<br>
  I would like add validations (notnull /empty) for couple of attributes. I would like to have custom Bean Validation, the application is a REST service, i'm using Spring 3 and JSR 303
  but i dont think i can use JSR 303 to validate the object as it is generated from the schema.</p>
  
  <p>can someone give me a nudge in the right direction on how to get this done.</p>