[bv-dev] Dependency between constraints and validators

[Gunnar Morling]

Ah, I wasn't aware that you had annotation processing in mind.

What I was thinking about was how to make addBinding() type safe in
that way that one can't pass a validator type not appropriate for the
constraint type, which would work using the right type parameters.

--Gunnar


2011/10/25 Emmanuel Bernard <emmanuel at hibernate.org>:
>
> On 24 oct. 2011, at 22:08, Gunnar Morling wrote:
>
>>>
>>> - we would need to list all binding via a programmatic API (that solution does break compile time checking BTW)
>>
>> Why would that break compile-time type-safety?
>
> Imagine the following code
>
>    void main(args[] args) {
>        ValidatorFactory factory = Validation
>            .byDefaultProvider()
>            .configure()
>              .addBinding(NotNull.class, NumberNotNullValidator.class)
>            .createValidatorFactory();
>
>        public static class Address {
>            @NotNull String getStreet() { ... };
>        }
>    }
>
> How would an annotation processor know that the factory is configured to bind NotNull with NumberNotNullValidator and thus that Address.getStreet cannot be validated?
>
>
>
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