SessionContext lost when loading Jax-rs resource

I am using Java EE 6, this is the first time using jax-rs and I have this resource class but I do not have any idea why my session is not retrieved when accessing the service. Login works fine and principal can be retrieved in other parts of the application.

@Path("/countries")
@Stateless
public class CountryResource {

    @Resource
    SessionContext ctx;

    @EJB
    private CityBean cityBean;

    @Path("/countryid/{countryid}")
    @GET
    @Produces("application/xml")
    public String getCountryByPk(@PathParam("countryid") Long tlCountryId){
        if(ctx != null){
            System.out.println(ctx.getCallerPrincipal());
        }

        String country;
        ...
        return country;
    }

This output to anonymous though I have logged in successfully. Before I tried using SessionContext I was trying to make the @RolesAllowed work but did not progress too. I also have the JaxRsActivator class. Anything I need to know about jax-rs pertaining to sessions?

@ApplicationPath("/rest")
public class JaxRsActivator extends Application {
}