how to use @Roles?

[mnrz]

Hello

I've read something in Seam reference about @Roles which you can define many roles for an entity, a User stated as an example as follows:

@Roles({
 @Role(name="user", scope=ScopeType.CONVERSATION),
 @Role(name="currentUser", scope=ScopeType.SESSION)
 })

it seems to me very useful but I can't comprehend its concepts and the benefits and also I don't know how to use? unfortunately I couldn't find any sample in which this feature is utilized.

can anyone explain this annotation and tell me how to use it?

thanks

[atao]

With @Name and @Role you can define only two components, with the same scope or not:

@Name("user")
@Scope(SESSION)
@Role(name="user2", scope=SESSION)

There is no such limitations with @Roles

@Name("user")
@Scope(SESSION)
@Roles({
 @Role(name="user2", scope=SESSION),
 @Role(name="user3", scope=SESSION),
 @Role(name="user4", scope=SESSION),
 @Role(name="user5", scope=SESSION),
 })

The scopes can be differents.

Then all the "Role" names can be used as the "Name" one.

[mnrz]

ok, I know about it. Assume that we defined those roles, now, in our session beans how we can use it?

for example, I have an Authenticator Session bean in which a User instance variable is defined as follows:

@Stateless
@Name("authenticator")
class Authenticator {

 @Out("currentUser", scope=ScopeType.SESSION)
 private User user;

 // rest of the codes....
}

and in another bean in which I provide a facility to manage other users for administrators as follows:

@Name("userManager")
@Stateful
class UsreManagerAction implements UserManager {

 private User user;

 //rest of the codes....
}

I want to know how do I use those roles in such these beans?

thanks again
how can I use

[mnrz]

any other idea? :)

[pmuir]

@In(create=true) User user2;

etc.

[mnrz]

what simple :)
ok so it has an issue only with auto instantiation and not further benefits.

I thought a great usability for that.

thank you both for your reply