Yes, thats's programmatic configuration. Does it integrate with JPA2 event
listeners?
On Apr 2, 2014 1:53 PM, "Stephan Classen" <[email protected]> wrote:
> We do it like this, but i don't understand fully why it is working :)
>
>
> class SomeGuiceModule {
>
> protected void configure() {
> bind(Valdiator.class).to(ValidatorProvider.class);
> }
>
> }
>
>
>
> /**
> * This provider returns a validator for Hibernate validation annotations.
> */
> @Singleton
> public class ValidatorProvider implements Provider<Validator>,
> Serializable {
>
> private static final long serialVersionUID = 1L;
>
> private final Validator validator;
>
> /**
> * Constructor.
> */
> public ValidatorProvider() {
> final ValidatorFactory validatorFactory =
> Validation.byDefaultProvider()
> .configure()
> .messageInterpolator(new CustomMessageInterpolator())
> .constraintValidatorFactory(new
> InjectingConstraintValidatorFactory())
> .buildValidatorFactory();
> validator = validatorFactory.getValidator();
> }
>
> /**
> * @return a validator instance.
> */
> @Override
> public Validator get() {
> return validator;
> }
>
> private static class InjectingConstraintValidatorFactory implements
> ConstraintValidatorFactory {
>
> @Override
> public final <T extends ConstraintValidator<?, ?>> T
> getInstance(Class<T> key) {
> final T constraintValidator =
> ReflectionHelper.newInstance(key, "ConstraintValidator");
>
> InjectorHolder.getInjector().injectMembers(constraintValidator);
> return constraintValidator;
> }
> }
>
> private static class CustomMessageInterpolator implements
> MessageInterpolator {
>
> /**
> * {@inheritDoc}
> */
> @Override
> public String interpolate(String messageTemplate, Context context)
> {
> return getLocalizedValue(messageTemplate);
> }
>
> /**
> * {@inheritDoc}
> */
> @Override
> public String interpolate(String messageTemplate, Context context,
> Locale locale) {
> return getLocalizedValue(messageTemplate);
> }
>
> private String getLocalizedValue(String messageTemplate) {
> // Get rid of braces:
> {javax.validation.constraints.NotNull.message} -->
> javax.validation.constraints.NotNull.message
> final String messageTemplateWithoutBraces =
> messageTemplate.substring(1, messageTemplate.length() - 1);
> return Localizer.get().getString(messageTemplateWithoutBraces,
> null);
> }
>
> }
> }
>
>
>
>
> On 04/02/2014 08:08 AM, Moandji Ezana wrote:
>
> You might be able to use your own Guice-aware interpolator. I haven't
> tried to code this, so I may be totally wrong, but as you don't control
> object instantiation, you might need to make the Provider an ugly static
> field somewhere.
>
> Alternatively, you could configure the Validator and (perhaps)
> EntityManagerFactory programmatically.
>
> The last thing I can think of is that the JPA 2 spec provides a mechanism
> for this. Any injection it uses would probably be based on CDI, though.
>
> Also, Guice-Persist is long-unmaintained and riddled with bugs, I wouldn't
> recommend using it.
> On Apr 2, 2014 12:50 AM, "Alex Wood" <[email protected]> wrote:
>
>> Hi,
>>
>> The web application I work on uses Guice and the JpaPersistModule. We
>> are also attempting to use JSR 303 Bean Validation with Hibernate
>> Validator. We would like to provide a custom class (A MessageInterpolator)
>> to look up messages based on the Accept-Language header of the user's
>> request. This customization appears to be a common one [1]. We have a
>> Guice Provider that reads the locale off the ServletRequest and returns the
>> correct resource bundle. However, I cannot figure out how to have Guice
>> successfully inject the Provider into the MessageInterpolator. The class
>> of the MessageInterpolator is defined in META-INF/validation.xml and as far
>> as I can tell, the creation of the ValidatorFactory class (and the included
>> MessageInterpolator) occurs within a Hibernate Event Listener that can be
>> defined in persistence.xml [2].
>>
>> Does anyone have any experience with getting @Injects to work on items
>> created by JPA as it is getting started? I'd either like to inject
>> dependencies directly into our own MessageInterpolator or create our own
>> event listener, but I'm not sure how to get injections run on the
>> listener. The JpaPersistModule is final so I don't have the option of
>> binding our event listener in it.
>>
>> [1]
>> https://community.jboss.org/wiki/HowToInterpolateMessagesUsingTheClientLocale
>> [2]
>> http://docs.jboss.org/hibernate/validator/4.3/reference/en-US/html_single/#d0e3096
>> --------
>> Regards,
>> Alex
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