Examples of com.sun.sgs.app.DataManager.createReference()

com.sun.sgs.app.DataManager.createReference()
Creates a managed reference to an object, storing the object in the data manager if it is transient. Applications should use managed references when a managed object refers to another managed object, either directly or indirectly through non-managed objects. @param < T> the type of the object @param object the object @return the managed reference @throws IllegalArgumentException if object does notimplement both {@link ManagedObject} and {@link Serializable} @throws ObjectNotFoundException if the object has been removed @throws TransactionException if the operation failed because of aproblem with the current transaction

     */
    UserMO(WonderlandIdentity identity) {
        this.identity = identity;


        DataManager dm = AppContext.getDataManager();
        logoutTasksRef = dm.createReference((Map<WonderlandClientID, Queue<Task>>)
                new ScalableHashMap<WonderlandClientID, Queue<Task>>());
    }
    
    /**
     * Get unique identity

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            clientAvatars = new HashMap();


            dm.markForUpdate(this);
            avatars.put(clientID, clientAvatars);
        }
        clientAvatars.put(avatarName, dm.createReference(avatar));
    }
    
    /**
     * User has logged in from specified session with specificed protocol listener
     * @param session

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     * must implement ManagedObject.
     */
    public void addUserListener(UserListener listener) {
        DataManager dm = AppContext.getDataManager();
        dm.markForUpdate(this);
        userListeners.add(dm.createReference(listener));
    }


    /**
     * Remove a user listener from this user
     * @param listener the listener to remove

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     * @param listener the listener to remove
     */
    public void removeUserListener(UserListener listener) {
        DataManager dm = AppContext.getDataManager();
        dm.markForUpdate(this);
        userListeners.remove(dm.createReference(listener));
    }


    /**
     * Get user listeners
     * @return the user listeners

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        // notify listeners for just this user
        for (ManagedReference<UserListener> listenerRef : user.getUserListeners()) {
            AppContext.getTaskManager().scheduleTask(
                    new UserListenerNotifier(listenerRef,
                                             dm.createReference(user),
                                             null,
                                             clientID,
                                             NotificationType.LOGIN));
        }

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        // notify listeners for all users
        for (ManagedReference<UserListener> listenerRef : userListeners) {
            AppContext.getTaskManager().scheduleTask(
                    new UserListenerNotifier(listenerRef,
                                             dm.createReference(user),
                                             null,
                                             clientID,
                                             NotificationType.LOGIN));
        }
    }

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        // add listener notification tasks to the queue, starting with
        // per-user listeners
        for (ManagedReference<UserListener> listener : user.getUserListeners()) {
            tasks.add(new UserListenerNotifier(listener, 
                                               dm.createReference(user), 
                                               dm.createReference(tasks), 
                                               clientID, 
                                               NotificationType.LOGOUT));
        }

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        // add listener notification tasks to the queue, starting with
        // per-user listeners
        for (ManagedReference<UserListener> listener : user.getUserListeners()) {
            tasks.add(new UserListenerNotifier(listener, 
                                               dm.createReference(user), 
                                               dm.createReference(tasks), 
                                               clientID, 
                                               NotificationType.LOGOUT));
        }
        
        // next add global listeners

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        }
        
        // next add global listeners
        for (ManagedReference<UserListener> listener : userListeners) {
            tasks.add(new UserListenerNotifier(listener, 
                                               dm.createReference(user), 
                                               dm.createReference(tasks), 
                                               clientID, 
                                               NotificationType.LOGOUT));
        }

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        // next add global listeners
        for (ManagedReference<UserListener> listener : userListeners) {
            tasks.add(new UserListenerNotifier(listener, 
                                               dm.createReference(user), 
                                               dm.createReference(tasks), 
                                               clientID, 
                                               NotificationType.LOGOUT));
        }


        // now that we have collected all logout tasks, start running them

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