5 Replies Latest reply on Sep 4, 2007 4:48 AM by mnrz

    how to use @Roles?

    mnrz
    mnrz Sep 1, 2007 9:05 AM

      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

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        • 1. Re: how to use @Roles?
          atao
          atao Sep 1, 2007 10:01 AM (in response to mnrz)

          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.



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          • 2. Re: how to use @Roles?
            mnrz
            mnrz Sep 1, 2007 11:50 AM (in response to 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

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            • 3. Re: how to use @Roles?
              mnrz
              mnrz Sep 4, 2007 3:26 AM (in response to mnrz)

              any other idea? :)

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              • 4. Re: how to use @Roles?
                pmuir
                pmuir Sep 4, 2007 4:39 AM (in response to mnrz)

                 

                @In(create=true) User user2;
                etc.

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                • 5. Re: how to use @Roles?
                  mnrz
                  mnrz Sep 4, 2007 4:48 AM (in response to 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

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