Examples of com.sun.sgs.app.ManagedReference

com.sun.sgs.app.ManagedReference
Represents a reference to a managed object. Classes that implement ManagedReference must also implement {@link Serializable}. Applications should create instances of this interface using the {@link DataManager#createReference DataManager.createReference} method. TheseManagedReference instances should be used to store references to instances of ManagedObject referred to by other managed objects or by the non-managed objects they refer to.
Applications should not use instances of ManagedReference as the values of static fields or in other locations not managed by the DataManager. There is no guarantee that objects only reachable through these external references will continue to be managed by the DataManager.
Some implementations may need to be notified when managed objects and the objects they refer to are modified, while other implementations may be configurable to detect these modifications automatically. Applications are always permitted to mark objects that have been modified, and doing so may produce performance improvements regardless of whether modifications are detected automatically. @param < T> the type of the referenced object @see DataManager#createReference DataManager.createReference

     * @param child to remove
     * @return true if the child was removed, false if the cell was not a child of
     * this cell.
     */
    public boolean removeChild(CellMO child) {
        ManagedReference childRef = AppContext.getDataManager().createReference(child);
        
        if (childCellRefs.remove(childRef)) {
            try {
                child.setParent(null);
                if (live) {

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         * @return the protocol in use by that session, or null if the
         * sessionId does not exist
         */
        public CommunicationsProtocol get(ClientSession session) {
            DataManager dm = AppContext.getDataManager();
            ManagedReference sessionRef = dm.createReference(session);
            
            return protocolMap.get(sessionRef);
        }

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    public void clientDisconnected(WonderlandClientSender sender, WonderlandClientID clientID) {
        logger.fine("SasProvider client disconnected.");
        SasServer server = (SasServer) serverRef.get();
           
        ManagedReference providerRef = server.providerDisconnected(sender, clientID);
        if (providerRef != null) {


            ProviderMessagesInFlight messagesInFlight = getProviderMessagesInFlight();
            if (messagesInFlight != null) {
                messagesInFlight.removeMessagesForProvider(providerRef);
            }


            RunningAppInfo runningApps = getRunningApps();
            if (runningApps != null) {
                runningApps.removeAppInfosForProvider(providerRef);
            }


            ProviderProxy provider = (ProviderProxy) providerRef.get();
            if (provider != null) {
                provider.cleanup();
            }
        }
    }

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        throws InstantiationException
    {
        logger.severe("Provider tryLaunch, clientID = " + clientID);
        logger.severe("command = " + command);


        ManagedReference thisRef = AppContext.getDataManager().createReference(this);


        SasProviderLaunchMessage msg = new SasProviderLaunchMessage(executionCapability, appName, command, cellID);


        // Record this message so we can match it up with its corresponding status message
        logger.info("message ID = " + msg.getMessageID());

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     * TODO: someday: currently assumes that there is only one app running per cell.
     */
    public void appStop (CellID cellID) {


        // Get the launch message ID which will identify the app to the provider
        ManagedReference thisRef = AppContext.getDataManager().createReference(this);
        MessageID launchMessageID = SasProviderConnectionHandler.getLaunchMessageIDForCellAndProvider(
                                                                      thisRef, cellID);


        // Send a stop message to the provider
        if (launchMessageID != null) {

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        // TODO: for now everything uses xremwin
        String execCap = "xremwin";


        ProviderProxy provider = new ProviderProxy(clientID, sender);
        ManagedReference providerRef = AppContext.getDataManager().createReference(provider);
        provider.addExecutionCapability(execCap);


        // Add to execution capability list
        LinkedList<ManagedReference> providers = execCapToProviderList.get(execCap);
        if (providers == null) {

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     * A reference to the provider proxy for that client is returned. It is the callers
     * responsibility to properly clean up the provider proxy.
     */
    ManagedReference providerDisconnected(WonderlandClientSender sender, WonderlandClientID clientID) {
        logger.info("Sas provider disconnnected, clientID = " + clientID);
        ManagedReference providerRefToRemove = null;


        // TODO: for now everything uses xremwin
        String execCap = "xremwin";


        // Remove provider from execution capability list

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        // Construct the launch request
        // TODO: someday: allow multiple apps to be launched per cell.
        LaunchRequest launchReq = new LaunchRequest(cellID, executionCapability, appName, command);


        ManagedReference providerRef = requestLaunch(launchReq);
        return new SasLaunchInfo(launchReq.cellID, launchReq.executionCapability, providerRef);
    }

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            AppContext.getDataManager().markForUpdate(this);
            return null;
        }


        // TODO: someday: Right now we just try only the first provider. Eventually try multiple providers.
        ManagedReference providerRef = providers.getFirst();
        if (providerRef == null) {
            throw new InstantiationException("Cannot find a provider for " + 
                                             launchReq.executionCapability);
        }


        // Now request the provider to launch the app
        launchReq.setProvider(providerRef);
        launchesInFlight.put(launchReq.cellID, launchReq);
        ProviderProxy provider = (ProviderProxy) providerRef.get();
        provider.tryLaunch(launchReq.cellID, launchReq.executionCapability, launchReq.appName, 
                           launchReq.command);


        return providerRef;
    }

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            LinkedList<ManagedReference> providers = execCapToProviderList.get(executionCapability);
            if (providers == null || providers.size() <= 0) {
                continue;
            }
            // TODO: someday: weed out providers already tried
            ManagedReference providerRef = providers.getFirst();
            ProviderProxy provider = (ProviderProxy) providerRef.get();


            // Remove request from pending list while it is in flight */
            reqs.remove(req);


            // Now request the newly selected provider to launch the app

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com.sun.sgs.test.impl.service.channel.AbstractChannelServiceTest$GetObjectCountTask

com.sun.sgs.test.impl.service.session.TestClientSessionServiceImplv4$GetObjectCountTask

org.jdesktop.wonderland.modules.sas.server.ProviderProxy

org.jdesktop.wonderland.modules.sas.server.SasProviderConnectionHandler

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org.jdesktop.wonderland.server.cell.CellMO

org.jdesktop.wonderland.server.comms.ProtocolSessionListener$ProtocolClientMap

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