You just have to follow the javax.validation API on this, as the error message tells you: catch the exception and call getConstraintViolations() on it to iterate on the constraints your persisting entities don't respect.
Check the ConstraintViolation API for more information.
Joined: Sep 30, 2010
I'm just starting to use jsr303 and I would like to know if you can point me some tutorial or book. I'm particularly interested in the business and data access layer..
Joined: Mar 13, 2008
Concerning JSR303, I cannot think of better tutorials than those of Emmanuel Bernard, who is the spec leader of this JSR. You can find them at Bean Validation Tutorials.
Also, the Java EE tutorial has a chapter on Bean Validation: Java EE tutorial.
JSR303 annotations can be part of your JPA entities, and bean validation can be triggered at any layer of your application, from the presentation layer to the data access layer.