• JPA + Hibernate - Bean Validation integration in JPA
• JPA Bean Validation - theJavaGeek
• IBM Knowledge Center - JPA의 Bean 유효성 검증
• Bean Validation - Fix annoyance between JPA and Bean Validation when @Id @GeneratedValue and @NotNull are used
• How to automatically validate entities with Hibernate Validator

• Chapter 4. Additional modules # Bean Validation
• javax.persistence.validation.mode : ValidationModeCALLBACK이나 NONE 중 에 하나로 항상 명시할 것.
  • AUTO가 Default 이며, Java Validation 구현체가 존재하면 자동 활성화 된다.

• validation 실패시에 RollbackException에 실제 위반 사항이 들어가 있다.

try {
	em.getTransaction().commit();
	Assert.fail(“ConstraintViolationException exptected”);
} catch (RollbackException e) {
	Set<ConstraintViolation<?>> violations = ((ConstraintViolationException)e.getCause()).getConstraintViolations();
	for (ConstraintViolation v : violations) {
		log.info(v);
	}
}