bean-validation

In a Spring MVC REST service (json), I have a controller method like this one : @RequestMapping(method = RequestMethod.POST, value = { "/doesntmatter" }) @ResponseBody public List<...> myMethod(@Valid @RequestBody List<MyBean> request, BindingResult bindingResult) { Where the MyBean class has bean validation annotations. The validations don't seem to take place in this case, although it works well for other controllers. I don't want to encapsulate the list in a dto this that would change the json input. Why is there no validations for a list of beans ? What are the alternatives ? @Valid is a

I'd like to have a @Unique constraint with Bean Validation, but that is not provided by the standard. If I would use JPA's @UniqueConstraint I wouldn't have a unique validation and error reporting mechanism. Is there a way to define @Unique as a Bean Validation constraint and combine it with JPA, such that JPA creates a column with an unique constraint and checks wheter a value is unique or not? Unless you acquire a lock on a whole table , it is basically not possible to check for unicity using a SQL query (any concurrent transaction could modify data after a manual check but before the commit

I know there are non-standard frameworks such as commons-validator, and hibernate validator. I wanted to know if someone knows an implementation of the official standard. skaffman Hibernate Validator is the reference implementation of JSR-303 bashflyng There are 2 compliant implementations now: Apache Bean Validation (formerly agimatec) Hibernate Validator You can access a benchmark and a quick description of both here: http://carinae.net/2010/06/benchmarking-hibernate-validator-and-apache-beanvalidation-the-two-jsr-303-implementations/ Implementations: agimatec-validation Hibernate Validator