How to test annotation object in the class that implement AbstractModule

I got a question regarding binding and annotation.

I have the following class:

public class MailFacadeImpl implements MailFacade {

  private final PersonDao personDao;

  @Inject
  public MailFacadeImpl(@Mail PersonDao personDao) {
    super();
    this.personDao = personDao;
  }

The PersonDao is annotated with a custom annotation. I would like to be able to test this annotation inside the class that implement AbstractModule.

here is a piece of code:

bind(new TypeLiteral<SecurityRulesFactory<Person>>(){}).toProvider(FactoryProvider.newFactory(
    new TypeLiteral<SecurityRulesFactory<Person>>(){}, new TypeLiteral<MailSecurityRulesCrdb>(){}));

I would like to have somthing similar to :

if(PersonDAO is annotated with(Mail.class) ){
bind(new TypeLiteral<SecurityR开发者_StackOverflow中文版ulesFactory<Person>>(){}).toProvider(FactoryProvider.newFactory(
    new TypeLiteral<SecurityRulesFactory<Person>>(){}, new TypeLiteral<MailSecurityRulesCrdb>(){}));
}

Do you think it's possible?

thx for your help :-) Have a nice friday!

It's not clear why you want your module to do this test. Instead, your module can specify how to get or create an instance of PersonDao for injection points annotated with Mail:

bind(PersonDao.class).annotatedWith(Mail.class).to(EmailAwarePersonDao.class);

Note that your PersonDao.class.isAnnotationPresent(Mail.class) won't help here, since the PersonDao class itself isn't annotated with Mail; the parameter to the MailFacadeImpl constructor has that annotation. There are ways to test for that, but if you are trying to do that from a Guice module, you're probably doing something wrong.