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

com.sun.sgs.app.DataManager.markForUpdate()
Notifies the system that an object is going to be modified, doing nothing if the object is transient. @param object the object @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 @see ManagedReference#getForUpdate ManagedReference.getForUpdate

        // NOTE: we can't directly save the item in the list, or
        // we'll end up with a local copy of the item. Instead, we
        // must save a ManagedReference to the item.


        DataManager dataManager = AppContext.getDataManager();
        dataManager.markForUpdate(this);


        return items.add(dataManager.createReference(item));
    }


    /**

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    public boolean addPlayer(SwordWorldPlayer player) {
        logger.log(Level.INFO, "{0} enters {1}",
            new Object[] { player, this });


        DataManager dataManager = AppContext.getDataManager();
        dataManager.markForUpdate(this);


        return players.add(dataManager.createReference(player));
    }


    /**

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    public boolean removePlayer(SwordWorldPlayer player) {
        logger.log(Level.INFO, "{0} leaves {1}",
            new Object[] { player, this });


        DataManager dataManager = AppContext.getDataManager();
        dataManager.markForUpdate(this);


        return players.remove(dataManager.createReference(player));
    }


    /**

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     *
     * @param session the session this player is logged in on
     */
    protected void setSession(ClientSession session) {
        DataManager dataMgr = AppContext.getDataManager();
        dataMgr.markForUpdate(this);


        currentSessionRef = dataMgr.createReference(session);


        logger.log(Level.INFO,
            "Set session for {0} to {1}",

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     * <p>
     * @param room the room this player should be in, or {@code null}
     */
    protected void setRoom(SwordWorldRoom room) {
        DataManager dataManager = AppContext.getDataManager();
        dataManager.markForUpdate(this);


        if (room == null) {
            currentRoomRef = null;
            return;
        }

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        DataManager dm = AppContext.getDataManager();
        Map<String, ManagedReference<AvatarCellMO>> clientAvatars = avatars.get(clientID);
        if (clientAvatars==null) {
            clientAvatars = new HashMap();


            dm.markForUpdate(this);
            avatars.put(clientID, clientAvatars);
        }
        clientAvatars.put(avatarName, dm.createReference(avatar));
    }

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     * @param session
     * @param protocol
     */
    void login(WonderlandClientID clientID) {
        DataManager dm = AppContext.getDataManager();
        dm.markForUpdate(this);


        if (activeClients==null) {
            activeClients = new HashSet<WonderlandClientID>();
        }

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     * @param listener the listener to notify on log in or log out.  Listener
     * 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

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     * Remove a user listener from this user
     * @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

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     * Log the user in from the specificed session. 
     * @param session 
     */
    public void login(WonderlandClientID clientID) {
        DataManager dm = AppContext.getDataManager();
        dm.markForUpdate(this);


        // issue 963: session could be null if client is in the process of
        // logging out
        if (clientID.getSession() == null) {
            return;

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