Examples of java.util.TreeSet

java.util.TreeSet
A {@link NavigableSet} implementation based on a {@link TreeMap}. The elements are ordered using their {@linkplain Comparable naturalordering}, or by a {@link Comparator} provided at set creationtime, depending on which constructor is used.
This implementation provides guaranteed log(n) time cost for the basic operations ( {@code add}, {@code remove} and {@code contains}).
Note that the ordering maintained by a set (whether or not an explicit comparator is provided) must be consistent with equals if it is to correctly implement the {@code Set} interface. (See {@code Comparable}or {@code Comparator} for a precise definition of consistent withequals.) This is so because the {@code Set} interface is defined interms of the {@code equals} operation, but a {@code TreeSet} instanceperforms all element comparisons using its {@code compareTo} (or{@code compare}) method, so two elements that are deemed equal by this method are, from the standpoint of the set, equal. The behavior of a set is well-defined even if its ordering is inconsistent with equals; it just fails to obey the general contract of the {@code Set} interface.
Note that this implementation is not synchronized. If multiple threads access a tree set concurrently, and at least one of the threads modifies the set, it must be synchronized externally. This is typically accomplished by synchronizing on some object that naturally encapsulates the set. If no such object exists, the set should be "wrapped" using the {@link Collections#synchronizedSortedSet Collections.synchronizedSortedSet}method. This is best done at creation time, to prevent accidental unsynchronized access to the set:
```
 SortedSet s = Collections.synchronizedSortedSet(new TreeSet(...));
```
The iterators returned by this class's {@code iterator} method arefail-fast: if the set is modified at any time after the iterator is created, in any way except through the iterator's own {@code remove}method, the iterator will throw a {@link ConcurrentModificationException}. Thus, in the face of concurrent modification, the iterator fails quickly and cleanly, rather than risking arbitrary, non-deterministic behavior at an undetermined time in the future.
Note that the fail-fast behavior of an iterator cannot be guaranteed as it is, generally speaking, impossible to make any hard guarantees in the presence of unsynchronized concurrent modification. Fail-fast iterators throw {@code ConcurrentModificationException} on a best-effort basis.Therefore, it would be wrong to write a program that depended on this exception for its correctness: the fail-fast behavior of iterators should be used only to detect bugs.
This class is a member of the Java Collections Framework. @param < E> the type of elements maintained by this set @author Josh Bloch @version 1.37, 05/10/06 @see Collection @see Set @see HashSet @see Comparable @see Comparator @see TreeMap @since 1.2


      long maxEntries = property.getMaxEntries();
      if (maxEntries > Integer.MAX_VALUE)
         throw new XmlBlasterException(glob, ErrorCode.INTERNAL_ILLEGALARGUMENT, ME, "initialize: The maximum number of messages is too big");
      this.comparator = new MsgComparator();
      this.storage = new TreeSet(this.comparator);
      this.numOfPersistentEntries = 0L;
      this.persistentSizeInBytes = 0L;
      this.isShutdown = false;
   }

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            if (event.startsWith(ContextNode.LOGGING_MARKER_TAG+"/severe/")
                  || event.startsWith("logging/error/")) {
               // We want to be notified if a log.error() is called, this will
               // notify our LogableDevice.log() method
               XbNotifyHandler.instance().register(Level.SEVERE.intValue(), this);
               if (this.loggingSet == null) this.loggingSet = new TreeSet();
               this.loggingSet.add(event);
            }
            // "logging/warning/*"
            else if (event.startsWith(ContextNode.LOGGING_MARKER_TAG+"/warning/")
                  || event.startsWith("logging/warn/")) {
               XbNotifyHandler.instance().register(Level.WARNING.intValue(), this);
               if (this.loggingSet == null) this.loggingSet = new TreeSet();
               this.loggingSet.add(event);
            }
            // "service/RunlevelManager/event/startupRunlevel8", "service/RunlevelManager/event/shutdownRunlevel7"
            else if (event.startsWith(this.engineGlob.getRunlevelManager().getContextNode().getRelativeName()+"/event/")) {
               log.fine("Register event = " + event);
               this.engineGlob.getRunlevelManager().addRunlevelListener(this);
               if (this.runlevelSet == null) this.runlevelSet = new TreeSet();
               this.runlevelSet.add(event);
            }
            else if (isConnectionStateEvent(event)) {
               // client/[subjectId]/session/[publicSessionId]/event/connectionState
               ClusterManager clusterManager = requestBroker.getServerScope().getClusterManager();
               if (clusterManager == null) {
                  log.warning("Configuration of '" + event + "' is ignored, no cluster manager available");
                  continue;
               }
               if (!clusterManager.isReady()) {
                  log.warning("Configuration of '" + event + "' is ignored, cluster manager is not ready");
                  continue;
               }
               int index = event.lastIndexOf("/event/");
               if (index == -1) {
                  log.warning("Configuration of '" + event + "' is ignored, wrong syntax");
                  continue;
               }
               // strip "event/connectionState"
               String name = event.substring(0, index);
               ClusterNode[] nodes = clusterManager.getClusterNodes();
               for (int ic=0; ic<nodes.length; ic++) {
                  ClusterNode node = nodes[ic];
                  SessionName destination = node.getSessionName();
                  if (destination != null && destination.matchRelativeName(name)) {
                     node.registerConnectionListener(this);
                  }
               }
            }
            else if (isCallbackStateEvent(event)) {
            //else if (event.endsWith("/event/callbackState") || event.endsWith("/event/callbackAlive") || event.endsWith("/event/callbackPolling") || event.endsWith("/event/callbackDead")) {
               // OK: "client/joe/session/1/event/callbackState"
               // Not yet supported: "client/joe/session/1/event/callbackAlive", "client/joe/session/1/event/callbackPolling"
               int index = event.lastIndexOf("/event/");
               if (index == -1) {
                  log.warning("Configuration of '" + event + "' is ignored, wrong syntax");
                  continue;
               }
               String name = event.substring(0, index);
               SessionName sessionName = new SessionName(this.engineGlob, name);
               this.requestBroker.getAuthenticate().addClientListener(this);
               if (this.callbackSessionStateSet == null) this.callbackSessionStateSet = new TreeSet();
               if (event.startsWith(ContextNode.SUBJECT_MARKER_TAG+ContextNode.SEP+"*"+ContextNode.SEP) ||
                   event.endsWith(ContextNode.SESSION_MARKER_TAG+ContextNode.SEP+"*"+"/event/callbackState")) {
                  // "client/*/session/1/event/callbackState" or "client/joe/session/*/event/callbackState"
                  if (this.pendingCallbackSessionInfoSet == null) this.pendingCallbackSessionInfoSet = new TreeSet();
                  this.pendingCallbackSessionInfoSet.add(name);
                  this.callbackSessionStateSet.add(name);
                  SubjectInfo[] subs = null;
                  log.fine("Register existing wildcard callback session state event = " + event);
                  if (event.startsWith(ContextNode.SUBJECT_MARKER_TAG+ContextNode.SEP+"*"+ContextNode.SEP) &&
                      !event.endsWith(ContextNode.SESSION_MARKER_TAG+ContextNode.SEP+"*"+"/event/callbackState")) {
                    subs = this.requestBroker.getAuthenticate().getSubjectInfoArr();
                    for (int sj=0; sj<subs.length; sj++) {
                      SubjectInfo subjectInfo = subs[sj];
                      if (!wildcardMatch(sessionName.getLoginName(), subjectInfo.getLoginName()))
                        continue;
                      SessionInfo[] ses = subjectInfo.getSessions();
                      for (int se=0; se<ses.length; se++) {
                        if (!wildcardMatch(sessionName.getPublicSessionId(), ses[se].getPublicSessionId()))
                          continue;
                        DispatchManager mgr = ses[se].getDispatchManager();
                            if (mgr != null) {
                                mgr.addConnectionStatusListener(this);
                             }
                      }
                    }
                  }
               }
               else {
                  log.fine("Register callback session state event = " + event);
                  SessionInfo sessionInfo = this.requestBroker.getAuthenticate().getSessionInfo(sessionName);
                  DispatchManager mgr = null;
                  if (sessionInfo != null)
                     mgr = sessionInfo.getDispatchManager();
                  if (mgr != null) {
                     mgr.addConnectionStatusListener(this);
                  }
                  else {
                     if (this.pendingCallbackSessionInfoSet == null) this.pendingCallbackSessionInfoSet = new TreeSet();
                     this.pendingCallbackSessionInfoSet.add(sessionName.getAbsoluteName());
                  }
                  this.callbackSessionStateSet.add(sessionName.getRelativeName());
               }
            }
            else if (isConnectionQueueEvent(event)) {
               // client/[subjectId]/session/[publicSessionId]/queue/connection/event/threshold.90%
               // TODO: register in xmlBlasterAccess of each ClusterNode client
               log.severe("Event " + event + " is not implemented");
            }
            else if (isQueueEvent(event)) {
               if (queueEventHandler == null) {
                  queueEventHandler = new QueueEventHandler(serverScope, this);
               }
               queueEventHandler.registerEventType(this, event);
            }
            else if (isPersistenceEvent(event)) {
               if (mapEventHandler == null) {
                  mapEventHandler = new MapEventHandler(serverScope, this);
               }
               mapEventHandler.registerEventType(this, event);
            }
            else if (event.startsWith(ContextNode.SUBJECT_MARKER_TAG+ContextNode.SEP)) {
               // REGEX: "client/.*/session/.*/event/.*"
               // "client/joe/session/1/event/connect", "client/*/session/*/event/disconnect"
               // "client/joe/session/1/event/subscribe"
               log.fine("Register login/logout event = " + event);
               if (event.endsWith("/event/subscribe") || event.endsWith("/event/unSubscribe"))
                  this.requestBroker.addSubscriptionListener(this);
               else if (event.endsWith("/event/remoteProperties"))
                  this.requestBroker.addRemotePropertiesListener(this); // I_RemotePropertiesListener
               else
                  this.requestBroker.getAuthenticate().addClientListener(this);
               if (this.clientSet == null) this.clientSet = new TreeSet();
               this.clientSet.add(event);
            }
            else if (event.startsWith(ContextNode.TOPIC_MARKER_TAG+ContextNode.SEP)) {
               // "topic/hello/event/alive", "topic/hello/event/subscribe" ...
               log.fine("Register topic event = " + event);
               if (event.endsWith("/event/subscribe") || event.endsWith("/event/unSubscribe"))
                  this.requestBroker.addSubscriptionListener(this);
               else
                  this.engineGlob.getTopicAccessor().addTopicListener(this);
               if (this.topicSet == null) this.topicSet = new TreeSet();
               this.topicSet.add(event);
            }
            else if (event.startsWith("heartbeat")) {
               // "heartbeat.360000
               log.fine("Register heartbeat event = " + event);

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        + " bytes");
    retBuffer.append("\nAvailable processors:            "
        + runtime.availableProcessors());


    retBuffer.append("\n\nEnvironment:\n");
    TreeSet envKeys = new TreeSet(System.getProperties().keySet());
    String key = null;
    for (Iterator it = envKeys.iterator(); it.hasNext();)
    {
      key = (String) it.next();
      retBuffer.append("\n" + key + "=" + System.getProperty(key));
    }

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   * @return List with chapters
   * @exception XException if any error occurs
   */
  public List getChapters()
  {
    TreeSet chapters = new TreeSet(mCache.keySet());
    return new Vector(chapters);
  } // getChapters()

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    if (sections == null)
    {
      return null;
    } // if (sections == null)


    TreeSet sectionSet = new TreeSet(sections.keySet());
    return new Vector(sectionSet);
  } // getSections(String chapter)

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        for (final Iterator iterator = this.getAllowedOperations().iterator(); iterator.hasNext();)
        {
            parameterTypes.addAll(((OperationFacade)iterator.next()).getParameters());
        }


        final Set types = new TreeSet(new TypeComparator());
        final Collection nonArrayTypes = new TreeSet(new TypeComparator());


        // clear out the cache of checkedTypes, otherwise
        // they'll be ignored the second time this method is
        // called (if the instance is reused)
        this.checkedTypes.clear();

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   public InclusiveNamespaces(Document doc, Set prefixes) {


      super(doc);


      StringBuffer sb = new StringBuffer();
      SortedSet prefixList = new TreeSet(prefixes);




      Iterator it = prefixList.iterator();


      while (it.hasNext()) {
         String prefix = (String) it.next();


         if (prefix.equals("xmlns")) {

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    * @param inclusiveNamespaces
    * @return A set to string
    */
   public static SortedSet prefixStr2Set(String inclusiveNamespaces) {


      SortedSet prefixes = new TreeSet();


      if ((inclusiveNamespaces == null)
              || (inclusiveNamespaces.length() == 0)) {
         return prefixes;
      }


      StringTokenizer st = new StringTokenizer(inclusiveNamespaces, " \t\r\n");


      while (st.hasMoreTokens()) {
         String prefix = st.nextToken();


         if (prefix.equals("#default")) {
            prefixes.add("xmlns" );
         } else {
            prefixes.add( prefix);
         }
      }


      return prefixes;
   }

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  /**
   * Returns the font family names available through extensions, in alphabetical order.
   */
  public static Collection getFontFamilyNames()
  {
    TreeSet familyNames = new TreeSet();//FIXMEFONT use collator for order?
    //FIXMEFONT do some cache
    List families = ExtensionsEnvironment.getExtensionsRegistry().getExtensions(FontFamily.class);
    for (Iterator itf = families.iterator(); itf.hasNext();)
    {
      FontFamily family = (FontFamily)itf.next();
      familyNames.add(family.getName());
    }
    return familyNames;
  }

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      backcolor = plot.getOwnBackcolor();
      orientation = plot.getOrientation();
      backgroundAlphaFloat = plot.getBackgroundAlphaFloat();
      foregroundAlphaFloat = plot.getForegroundAlphaFloat();
      labelRotationDouble = plot.getLabelRotationDouble();
      seriesColors = new TreeSet(plot.getSeriesColors());
    }
    else
    {
      seriesColors = new TreeSet();
    }
  }

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