7.11. Seam インターセプタ

public class LoggedInInterceptor { 
    @AroundInvoke 
    public Object checkLoggedIn(InvocationContext invocation) 
        throws Exception { 
        boolean isLoggedIn = Contexts.getSessionContext()
            .get("loggedIn")!=null; 
        if (isLoggedIn) { 
            //the user is already logged in return invocation.proceed(); 
        } else { 
            //the user is not logged in, fwd to login page return "login"; 
        } 
    } 
}

public class LoggedInInterceptor { 
    @AroundInvoke 
    public Object checkLoggedIn(InvocationContext invocation) 
        throws Exception { 
        boolean isLoggedIn = Contexts.getSessionContext()
            .get("loggedIn")!=null; 
        if (isLoggedIn) { 
            //the user is already logged in return invocation.proceed(); 
        } else { 
            //the user is not logged in, fwd to login page return "login"; 
        } 
    } 
}

@Target(TYPE) 
@Retention(RUNTIME) 
@Interceptors(LoggedInInterceptor.class) 
    public @interface LoggedIn {}

@Target(TYPE) 
@Retention(RUNTIME) 
@Interceptors(LoggedInInterceptor.class) 
    public @interface LoggedIn {}

@Stateless 
@Name("changePasswordAction") 
@LoggedIn 
@Interceptors(SeamInterceptor.class) 
public class ChangePasswordAction implements ChangePassword { 
    ... 
        public String changePassword() { 
            ... 
        } 
}

@Stateless 
@Name("changePasswordAction") 
@LoggedIn 
@Interceptors(SeamInterceptor.class) 
public class ChangePasswordAction implements ChangePassword { 
    ... 
        public String changePassword() { 
            ... 
        } 
}

@Interceptor(around={BijectionInterceptor.class, 
                     ValidationInterceptor.class, 
                     ConversationInterceptor.class}, 
    within=RemoveInterceptor.class) 
public class LoggedInInterceptor { 
    ... 
}

@Interceptor(around={BijectionInterceptor.class, 
                     ValidationInterceptor.class, 
                     ConversationInterceptor.class}, 
    within=RemoveInterceptor.class) 
public class LoggedInInterceptor { 
    ... 
}

@Interceptor(type=CLIENT) 
public class LoggedInInterceptor { 
    ... 
}

@Interceptor(type=CLIENT) 
public class LoggedInInterceptor { 
    ... 
}