Examples of org.apache.commons.collections.map.LinkedMap

Package org.apache.commons.collections.map

Examples of org.apache.commons.collections.map.LinkedMap

org.apache.commons.collections.map.LinkedMap
A Map implementation that maintains the order of the entries. In this implementation order is maintained by original insertion.
This implementation improves on the JDK1.4 LinkedHashMap by adding the {@link org.apache.commons.collections.MapIterator MapIterator}functionality, additional convenience methods and allowing bidirectional iteration. It also implements OrderedMap. In addition, non-interface methods are provided to access the map by index.
The orderedMapIterator() method provides direct access to a bidirectional iterator. The iterators from the other views can also be cast to OrderedIterator if required.
All the available iterators can be reset back to the start by casting to ResettableIterator and calling reset().
The implementation is also designed to be subclassed, with lots of useful methods exposed. @since Commons Collections 3.0 @version $Revision: 1.9 $ $Date: 2004/02/18 01:13:19 $ @author Stephen Colebourne

    }
    public void prepareEventProcessing(Base tag) {
        
        
        SessionContext sessionContext = getSessionContext();
        LinkedMap list = TMLPortlet.getFiredEventsQueue(tag.getPageContext().getSession());
        
        // Look if the event queue proceeded since the last processed event
        if (list.size() > 0) {
            PortletEvent lastEvent = (PortletEvent) list.get(list.lastKey());
            if (lastEvent != null) {
                if (lastEvent.getIndex() > sessionContext.getLastProcessedEventIndex()) {
                    
                    // Find the start index for processing new events
                    Long startIndex;
                    Long lastProcessedIndex = new Long(sessionContext.getLastProcessedEventIndex());
                    if (list.containsKey(lastProcessedIndex)) {
                        startIndex = (Long) list.nextKey(lastProcessedIndex);
                    }
                    else {
                        startIndex = (Long) list.firstKey();
                    }
                    
                    // Set start index as WebTML option
                    tag.getStatus().setOption(Base.OPTION_PORTLET_EVENT_STARTINDEX, new Long(sessionContext.getLastProcessedEventIndex()), null);

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            throw new WGQueryException("Exception retrieving or parsing feed", query, e);
    }
    
    
    List items = new ArrayList(channel.getItems());
    Map itemMap = new LinkedMap();
    Iterator iter = items.iterator();
    
    while(iter.hasNext()){
      Item item = (Item) iter.next();
      itemMap.put( (new Long(item.getId())).toString() , new ItemWrapper(item) );
      }
    return itemMap;
  }

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    }


    public void usageTestData() {


        LinkedMap day = new LinkedMap();
        HourStatistic stat = new HourStatistic();


        for (int i = 0; i <= 23; i++) {
            stat.increment();
            day.put(new Integer(i), stat);
        }


        _requestsPerDay.clear();
        _requestsPerDay.put("01.01.2006", day);
        _requestsPerDay.put("02.01.2006", day);

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            calendar.setTime(date);
        
            String dayKey = DAY_KEY_FORMAT.format(date);
            Map<Integer, HourStatistic> requestsPerHour = (Map<Integer, HourStatistic>) _requestsPerDay.get(dayKey);
            if (requestsPerHour == null) {
                requestsPerHour = new LinkedMap();
                _requestsPerDay.put(dayKey, requestsPerHour);
            }
        
            Integer hourKey = new Integer(calendar.get(GregorianCalendar.HOUR_OF_DAY));
            HourStatistic requestsThisHour = requestsPerHour.get(hourKey);

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     * Consolidate an event iterator obtained from observation, merging
     * add and remove operations on nodes with the same UUID into a move
     * operation.
     */
    private Iterator<HierarchyEvent> consolidateEvents(EventIterator events) {
        LinkedMap eventMap = new LinkedMap();


        while (events.hasNext()) {
            EventImpl event = (EventImpl) events.nextEvent();
            HierarchyEvent he;


            try {
                he = new HierarchyEvent(event.getChildId(),
                        sysSession.getQPath(event.getPath()).getNormalizedPath(),
                        event.getType());
            } catch (MalformedPathException e) {
                log.info("Unable to get event's path: " + e.getMessage());
                continue;
            } catch (RepositoryException e) {
                log.info("Unable to get event's path: " + e.getMessage());
                continue;
            }


            HierarchyEvent heExisting = (HierarchyEvent) eventMap.get(he.id);
            if (heExisting != null) {
                heExisting.merge(he);
            } else {
                eventMap.put(he.id, he);
            }
        }
        return eventMap.values().iterator();
    }

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     * modifiable.
     */
    private void ensureModifiable() {
        if (nameMap == Collections.EMPTY_MAP) {
            nameMap = new HashMap<Name, Object>();
            entries = new LinkedMap();
        } else if (shared) {
            entries = (LinkedMap) entries.clone();
            nameMap = (Map<Name, Object>) ((HashMap<Name, Object>) nameMap).clone();
            for (Iterator it = nameMap.entrySet().iterator(); it.hasNext(); ) {
                Map.Entry entry = (Map.Entry) it.next();

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        {
            throw new IllegalArgumentException(
                    "Configuration must not be null!");
        }
        configuration = config;
        layoutData = new LinkedMap();
        config.addConfigurationListener(this);


        if (c != null)
        {
            copyFrom(c);

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         * Add the given instance to the dirty cache.
         */
        public void addDirty(StateManagerImpl sm) {
            if (_dirty == null) {
                if (_orderDirty)
                    _dirty = MapBackedSet.decorate(new LinkedMap());
                else
                    _dirty = new HashSet();
            }
            if (_dirty.add(sm))
                removeCleanInternal(sm);

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                    ("savepoint-flush-not-supported"));


            OpenJPASavepoint save = _spm.newSavepoint(name, this);
            if (_savepoints == null || _savepoints.isEmpty()) {
                save.save(getTransactionalStates());
                _savepoints = new LinkedMap();
            } else {
                if (_savepointCache == null)
                    save.save(Collections.EMPTY_LIST);
                else {
                    save.save(_savepointCache);

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    /**
     * Validate that the types of the parameters are correct.
     */
    private void validateParameters() {
        if (_positional != null) {
            LinkedMap types = _query.getParameterTypes();
            for (int i = 0,
                size = Math.min(_positional.size(), types.size());
                i < size; i++)
                validateParameter(String.valueOf(i),
                    (Class) types.getValue(i), _positional.get(i));
        } else if (_named != null) {
            Map types = _query.getParameterTypes();
            for (Iterator i = _named.entrySet().iterator(); i.hasNext();) {
                Map.Entry entry = (Map.Entry) i.next();
                String name = (String) entry.getKey();
                validateParameter(name, (Class) types.get(name),
                    entry.getValue());
            }
        }
    }

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