Unchecked cast from List - typesafe injection

[nimo22]

I get a debug-warning:

"Type safety: Unchecked cast from List to List<Users>"

for that:

public List <User> getUsers() 
{ 
          return (List <Users>) entityManager.createNamedQuery("getUsers").getResultList();
}

Can I avoid a unchecked-cast warnings with weld.

Is there a way to use a qualifier or the like?

I dont want to use

@SuppressWarnings(unchecked) to all my queries.

In Warp-persist from Google Guice, I can say something like:

@Finder(namedQuery = "getUsers")
public List<Foo> getUsers(@Named("id") final int id) {
    throw new AssertionError();
}

So you see, no unchecked-cast warning occurs in warp-persist.

How can I do that with weld?

Is there something like that in seam 3?

It is really annoying to have all that surpress-warnings or unchecked-cast-exceptions all over my queries.

[pmuir]

We are planning a similar extension :-)

[nimo22]

Good to know - thanks!

[wujek]

Are you using JPA2? I guess as you are using CDI, JPA2 is an option as well. If so, then you have:

TypedQuery<User> usersQuery = em.createNamedQuery("getUsers", User.class);
List<User> users = usersQuery.getResultList();

?

[nimo22]

Wow, that s a cool feature, didnt know it. thanks !!