Example usage for java.util.concurrent CopyOnWriteArraySet CopyOnWriteArraySet

Introduction

In this page you can find the example usage for java.util.concurrent CopyOnWriteArraySet CopyOnWriteArraySet.

Prototype

public CopyOnWriteArraySet()

Source Link

Document

Creates an empty set.

Usage

From source file:org.springframework.data.redis.listener.RedisMessageListenerContainer.java

private void addListener(MessageListener listener, Collection<? extends Topic> topics) {
    Assert.notNull(listener, "a valid listener is required");
    Assert.notEmpty(topics, "at least one topic is required");

    List<byte[]> channels = new ArrayList<byte[]>(topics.size());
    List<byte[]> patterns = new ArrayList<byte[]>(topics.size());

    boolean trace = logger.isTraceEnabled();

    // add listener mapping
    Set<Topic> set = listenerTopics.get(listener);
    if (set == null) {
        set = new CopyOnWriteArraySet<Topic>();
        listenerTopics.put(listener, set);
    }//from  w  w w.  j  ava 2s . com
    set.addAll(topics);

    for (Topic topic : topics) {

        ByteArrayWrapper holder = new ByteArrayWrapper(serializer.serialize(topic.getTopic()));

        if (topic instanceof ChannelTopic) {
            Collection<MessageListener> collection = channelMapping.get(holder);
            if (collection == null) {
                collection = new CopyOnWriteArraySet<MessageListener>();
                channelMapping.put(holder, collection);
            }
            collection.add(listener);
            channels.add(holder.getArray());

            if (trace)
                logger.trace("Adding listener '" + listener + "' on channel '" + topic.getTopic() + "'");
        }

        else if (topic instanceof PatternTopic) {
            Collection<MessageListener> collection = patternMapping.get(holder);
            if (collection == null) {
                collection = new CopyOnWriteArraySet<MessageListener>();
                patternMapping.put(holder, collection);
            }
            collection.add(listener);
            patterns.add(holder.getArray());

            if (trace)
                logger.trace("Adding listener '" + listener + "' for pattern '" + topic.getTopic() + "'");
        }

        else {
            throw new IllegalArgumentException("Unknown topic type '" + topic.getClass() + "'");
        }
    }

    // check the current listening state
    if (listening) {
        subscriptionTask.subscribeChannel(channels.toArray(new byte[channels.size()][]));
        subscriptionTask.subscribePattern(patterns.toArray(new byte[patterns.size()][]));
    }
}

From source file:org.opendaylight.netvirt.dhcpservice.DhcpExternalTunnelManager.java

public void updateExistingVMTunnelIPCache(IpAddress tunnelIp, String elanInstanceName, String vmMacAddress) {
    Pair<IpAddress, String> tunnelIpElanName = new ImmutablePair<>(tunnelIp, elanInstanceName);
    Set<String> listExistingVmMacAddress;
    listExistingVmMacAddress = availableVMCache.get(tunnelIpElanName);
    if (listExistingVmMacAddress == null) {
        listExistingVmMacAddress = new CopyOnWriteArraySet<>();
    }/*from  w w w .ja  v  a 2 s .com*/
    listExistingVmMacAddress.add(vmMacAddress);
    LOG.trace("Updating availableVMCache for tunnelIpElanName {} value {}", tunnelIpElanName,
            listExistingVmMacAddress);
    availableVMCache.put(tunnelIpElanName, listExistingVmMacAddress);
}

From source file:de.cubeisland.engine.core.webapi.ApiServer.java

public void subscribe(String event, WebSocketRequestHandler requestHandler) {
    expectNotNull(event, "The event name must not be null!");
    expectNotNull(requestHandler, "The request handler must not be null!");
    event = event.toLowerCase(ENGLISH);/*from  ww w.j  a  v  a 2 s. com*/

    Set<WebSocketRequestHandler> subscribedHandlers = this.subscriptions.get(event);
    if (subscribedHandlers == null) {
        this.subscriptions.put(event, subscribedHandlers = new CopyOnWriteArraySet<>());
    }
    subscribedHandlers.add(requestHandler);
}

From source file:com.linkedin.helix.store.file.FilePropertyStore.java

@Override
public void subscribeForPropertyChange(String prefix, PropertyChangeListener<T> listener)
        throws PropertyStoreException {
    if (null != listener) {
        String path = getPath(prefix);
        synchronized (_fileChangeListeners) {
            CopyOnWriteArraySet<PropertyChangeListener<T>> listeners = _fileChangeListeners.get(path);
            if (listeners == null) {
                listeners = new CopyOnWriteArraySet<PropertyChangeListener<T>>();
                _fileChangeListeners.put(path, listeners);
            }//from w  ww  .j  a va2  s.  com
            listeners.add(listener);
        }
    }

}

From source file:org.springsource.ide.eclipse.dashboard.internal.ui.editors.DashboardMainPage.java

@Override
protected void createFormContent(IManagedForm managedForm) {
    toolkit = managedForm.getToolkit();//from  ww w. ja v  a  2  s .  c o m
    form = managedForm.getForm();
    unfinishedJobs = new CopyOnWriteArraySet<AggregateFeedJob>();

    // get dark gray color as FormText display it lighter as other widgets
    feedColor = new Color(Display.getDefault(), 70, 70, 70);

    // getHeaderForm().setText(null);// "SpringSource Tool Suite");
    toolkit.decorateFormHeading(form.getForm());

    prefStore = IdeUiPlugin.getDefault().getPreferenceStore();

    GridLayout compositeLayout = new GridLayout(2, true);
    compositeLayout.marginHeight = 0;
    compositeLayout.marginTop = 5;
    compositeLayout.verticalSpacing = 0;

    Composite body = form.getBody();
    body.setLayout(compositeLayout);

    Composite leftComposite = toolkit.createComposite(body);
    leftComposite.setLayout(new GridLayout());
    GridDataFactory.fillDefaults().grab(true, true).applyTo(leftComposite);

    Composite rightComposite = toolkit.createComposite(body);
    rightComposite.setLayout(new GridLayout());
    GridDataFactory.fillDefaults().grab(true, true).applyTo(rightComposite);

    createHeader();

    createNewProjectsSection(leftComposite);
    createUpdateSection(leftComposite);

    parts = contributeParts(leftComposite, AbstractDashboardPart.ID_PATH_DOC);
    for (AbstractDashboardPart part : parts) {
        if (part.getControl() instanceof Section) {
            String expansionProp = getExpansionPropertyId(part);
            Section section = (Section) part.getControl();
            GridDataFactory.fillDefaults().grab(false, getStoredExpandedState(expansionProp, false))
                    .applyTo(section);
            setUpExpandableSection(section, expansionProp, false);
        }
    }

    createHelpSection(leftComposite);

    createFeedsSection(rightComposite, "Feeds", FeedType.BLOG, "blog");

    searchBox.setFocus();

    ResourceProvider.getInstance().addPropertyChangeListener(this);
}

From source file:org.sakaiproject.content.tool.FilePickerAction.java

/**
 * get/init state attribute STATE_EXPANDED_COLLECTIONS
 * @param state The tool session to get the object from or create it in.
 * @return An {@link ExpandedCollections} but never <code>null</code>.
 *//*from w  w  w  .  ja  va  2 s  .c om*/
private static Set<String> getExpandedCollections(ToolSession session) {
    Set<String> current = (Set<String>) session.getAttribute(STATE_EXPANDED_COLLECTIONS);
    if (current == null) {
        current = new CopyOnWriteArraySet<String>();
        session.setAttribute(STATE_EXPANDED_COLLECTIONS, current);
    }
    return current;
}

From source file:lineage2.gameserver.model.Creature.java

/**
 * Method addTrigger./*from   ww w  .j  av  a 2 s.  c o  m*/
 * @param t TriggerInfo
 */
public void addTrigger(TriggerInfo t) {
    if (_triggers == null) {
        _triggers = new ConcurrentHashMap<TriggerType, Set<TriggerInfo>>();
    }
    Set<TriggerInfo> hs = _triggers.get(t.getType());
    if (hs == null) {
        hs = new CopyOnWriteArraySet<TriggerInfo>();
        _triggers.put(t.getType(), hs);
    }
    hs.add(t);
    if (t.getType() == TriggerType.ADD) {
        useTriggerSkill(this, null, t, null, 0);
    }
}

From source file:org.sakaiproject.content.tool.ResourcesAction.java

/**
 * get/init state attribute STATE_EXPANDED_COLLECTIONS
 * @param state//  ww w  .  j a  va  2  s . c o m
 * @return An {@link Set} but never <code>null</code>.
 */
private static Set<String> getExpandedCollections(SessionState state) {
    Set<String> current = (Set<String>) state.getAttribute(STATE_EXPANDED_COLLECTIONS);
    if (current == null) {
        // We use a CopyOnWrite Set so that we don't have to do any sychronization when iterating over it.
        // Switching to HashSet results in runaway threads and concurrentmodificationsexceptions (from iterating).
        current = new CopyOnWriteArraySet<String>();
        state.setAttribute(STATE_EXPANDED_COLLECTIONS, current);
    }
    return current;
}