Example usage for java.util Collections EMPTY_MAP

Introduction

In this page you can find the example usage for java.util Collections EMPTY_MAP.

Prototype

Map EMPTY_MAP

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Document

The empty map (immutable).

Usage

From source file:ddf.catalog.transformer.xml.MetacardMarshallerImpl.java

@Override
public String marshal(Metacard metacard)
        throws XmlPullParserException, IOException, CatalogTransformerException {

    return marshal(metacard, Collections.EMPTY_MAP);
}

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From source file:org.apache.xmlgraphics.image.loader.pipeline.ImageProviderPipeline.java

/**
 * Executes the image converter pipeline. First, the image indicated by the ImageInfo instance
 * is loaded through an ImageLoader and then optionally converted by a series of
 * ImageConverters. At the end of the pipeline, the fully loaded and converted image is
 * returned.// ww  w.  ja  v  a2 s .c  o  m
 * @param info the image info object indicating the image to load
 * @param originalImage the original image to start the pipeline off or null if an ImageLoader
 *          is used
 * @param hints a Map of image conversion hints
 * @param context the session context
 * @return the requested image
 * @throws ImageException if an error occurs while loader or converting the image
 * @throws IOException if an I/O error occurs
 */
public Image execute(ImageInfo info, Image originalImage, Map hints, ImageSessionContext context)
        throws ImageException, IOException {
    if (hints == null) {
        hints = Collections.EMPTY_MAP;
    }
    long start, duration;
    start = System.currentTimeMillis();
    Image img = null;

    //Remember the last image in the pipeline that is cacheable and cache that.
    Image lastCacheableImage = null;

    int converterCount = converters.size();
    int startingPoint = 0;
    if (cache != null) {
        for (int i = converterCount - 1; i >= 0; i--) {
            ImageConverter converter = getConverter(i);
            ImageFlavor flavor = converter.getTargetFlavor();
            img = cache.getImage(info, flavor);
            if (img != null) {
                startingPoint = i + 1;
                break;
            }
        }

        if (img == null && loader != null) {
            //try target flavor of loader from cache
            ImageFlavor flavor = loader.getTargetFlavor();
            img = cache.getImage(info, flavor);
        }
    }
    if (img == null && originalImage != null) {
        img = originalImage;
    }

    boolean entirelyInCache = true;
    if (img == null && loader != null) {
        //Load image
        img = loader.loadImage(info, hints, context);
        if (log.isTraceEnabled()) {
            duration = System.currentTimeMillis() - start;
            log.trace("Image loading using " + loader + " took " + duration + " ms.");
        }

        //Caching
        entirelyInCache = false;
        if (img.isCacheable()) {
            lastCacheableImage = img;
        }
    }
    if (img == null) {
        throw new ImageException("Pipeline fails. No ImageLoader and no original Image available.");
    }

    if (converterCount > 0) {
        for (int i = startingPoint; i < converterCount; i++) {
            ImageConverter converter = getConverter(i);
            start = System.currentTimeMillis();
            img = converter.convert(img, hints);
            if (log.isTraceEnabled()) {
                duration = System.currentTimeMillis() - start;
                log.trace("Image conversion using " + converter + " took " + duration + " ms.");
            }

            //Caching
            entirelyInCache = false;
            if (img.isCacheable()) {
                lastCacheableImage = img;
            }
        }
    }

    //Note: Currently we just cache the end result of the pipeline, not all intermediate
    //results as it is expected that the cache hit ration would be rather small.
    if (cache != null && !entirelyInCache) {
        if (lastCacheableImage == null) {
            //Try to make the Image cacheable
            lastCacheableImage = forceCaching(img);
        }
        if (lastCacheableImage != null) {
            if (log.isTraceEnabled()) {
                log.trace("Caching image: " + lastCacheableImage);
            }
            cache.putImage(lastCacheableImage);
        }
    }
    return img;
}

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From source file:org.apache.james.mime4j.field.ContentTypeField.java

/**
 * Gets all parameters.//from www .  ja v  a  2 s . c o  m
 * 
 * @return the parameters.
 */
public Map getParameters() {
    return parameters != null ? Collections.unmodifiableMap(parameters) : Collections.EMPTY_MAP;
}

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From source file:org.codehaus.groovy.grails.scaffolding.DefaultScaffoldRequestHandler.java

public Map handleDelete(HttpServletRequest request, HttpServletResponse response, ScaffoldCallback callback) {

    Serializable id = getRequestId();
    if (id == null) {
        LOG.debug("[ScaffoldRequestHandler] No ID parameter [" + id + "] for request [delete]");
        callback.setInvoked(false);//from   w  w w  . ja v  a2  s.co m
        return Collections.EMPTY_MAP;
    }

    Map model = new HashMap();
    Object domainObject = domain.get(id);
    model.put(domain.getSingularName(), domainObject);

    if (domainObject != null) {
        domain.delete(id);
        callback.setInvoked(true);
    }

    return model;
}

---

From source file:org.eclipselabs.spray.xtext.ui.internal.RegisterPlatformGenmodelListener.java

protected void registerGenmodel(IFile file) {
    ResourceSet rs = new ResourceSetImpl();
    Resource emfResource = rs//from  w  ww  .j  ava2 s. c  om
            .createResource(URI.createPlatformResourceURI((file.getFullPath().toPortableString()), true));
    try {
        emfResource.load(Collections.EMPTY_MAP);
        genModelHelper.registerGenModel(emfResource.getResourceSet(), emfResource.getURI());
        emfResource.unload();
    } catch (Exception e) {
        SprayActivatorExt.getInstance().getLog()
                .log(new Status(IStatus.WARNING, "org.eclipselabs.spray.xtext.ui",
                        "Error loading genmodel " + emfResource.getURI().toString(), e));
    }
}

---

From source file:eu.brokeratcloud.fpr.model.DivaRoot.java

public DivaRoot(URI uri) {
    ResourceSet rs = new ResourceSetImpl();
    rs.getResourceFactoryRegistry().getExtensionToFactoryMap().put("diva", new XMIResourceFactoryImpl());
    Resource res = rs.createResource(uri);
    try {/*from w w  w .  j  a v a2s . c  o m*/
        res.load(Collections.EMPTY_MAP);
        this.root = (VariabilityModel) res.getContents().get(0);
    } catch (Exception e) {
        this.root = DivaFactory.eINSTANCE.createVariabilityModel();
        SimulationModel simu = DivaFactory.eINSTANCE.createSimulationModel();
        Scenario scenario = DivaFactory.eINSTANCE.createScenario();
        Context ctx = DivaFactory.eINSTANCE.createContext();
        scenario.getContext().add(ctx);
        simu.getScenario().add(scenario);
        root.setSimulation(simu);
        res.getContents().add(this.root);
        try {
            res.save(Collections.EMPTY_MAP);
        } catch (IOException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }

        // e.printStackTrace();
    }
}

---

From source file:eu.agilejava.snoopee.scan.SnoopEERegistrationClient.java

private void readConfiguration() throws SnoopEEConfigurationException {

    Map<String, Object> snoopConfig = Collections.EMPTY_MAP;
    try {/*from  www  .j a v a 2  s .  co  m*/
        Yaml yaml = new Yaml();
        Map<String, Object> props = (Map<String, Object>) yaml
                .load(Thread.currentThread().getContextClassLoader().getResourceAsStream("/snoopee.yml"));

        snoopConfig = (Map<String, Object>) props.get("snoopee");

    } catch (YAMLException e) {
        LOGGER.config(() -> "No configuration file. Using env properties.");
    }

    applicationConfig.setServiceName(SnoopEEExtensionHelper.getServiceName());
    final String host = readProperty("host", snoopConfig);
    final String port = readProperty("port", snoopConfig);
    applicationConfig.setServiceHome(host + ":" + port + "/");
    applicationConfig.setServiceRoot(readProperty("serviceRoot", snoopConfig));

    LOGGER.config(() -> "application config: " + applicationConfig.toJSON());

    serviceUrl = "http://" + readProperty("snoopeeService", snoopConfig);
}

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From source file:org.jhk.pulsing.web.service.prod.PulseService.java

/**
 * Hmmm should work in DRPC from storm+trident to get notified of new batch and then send 
 * the message to client component for new set? Look into it since familiar only w/ trident
 * /*from   w ww  .  java 2 s.c  o  m*/
 * @param numMinutes
 * @return
 */
@Override
public Map<Long, String> getTrendingPulseSubscriptions(int numMinutes) {

    Instant current = Instant.now();
    Instant beforeRange = current.minus(numMinutes, ChronoUnit.MINUTES);

    Optional<Set<String>> optTps = redisPulseDao.getTrendingPulseSubscriptions(beforeRange.getEpochSecond(),
            current.getEpochSecond());

    @SuppressWarnings("unchecked")
    Map<Long, String> tpSubscriptions = Collections.EMPTY_MAP;

    if (optTps.isPresent()) {
        tpSubscriptions = PulseServiceUtil.processTrendingPulseSubscribe(optTps.get(), _objectMapper);
    }
    ;

    return tpSubscriptions;
}

---

From source file:org.hyperic.hq.appdef.server.session.AgentPluginUpdaterImpl.java

@Transactional(readOnly = false)
public void queuePluginTransfer(Map<Integer, Collection<Plugin>> updates,
        Map<Integer, Collection<String>> removes, boolean restartAgents) {
    if (isDisabled()) {
        return;/*from  w w  w . j a  v  a  2s .  c o  m*/
    }
    @SuppressWarnings("unchecked")
    final Map<Integer, Collection<Plugin>> updateMap = (updates == null) ? Collections.EMPTY_MAP : updates;
    @SuppressWarnings("unchecked")
    final Map<Integer, Collection<String>> removeMap = (removes == null) ? Collections.EMPTY_MAP : removes;
    if (restartAgents) {
        pluginManager.updateAgentPluginSyncStatus(AgentPluginStatusEnum.SYNC_IN_PROGRESS, updateMap, removeMap);
    } else {
        pluginManager.updateAgentPluginSyncStatus(AgentPluginStatusEnum.SYNC_FAILURE, updateMap, removeMap);
    }
    // want jobs to get added to the agentSynchronizer after commit to ensure that we don't
    // have agents restarting and updating status before the status is updated as a result
    // of the updateAgentPluginSyncStatus() call. If the queuing was not called this way we
    // could have agents sitting in the "IN-PROGRESS" state indefinitely because they were
    // updated out of order
    zeventManager.enqueueEventAfterCommit(new PluginStatusUpdatedZevent(restartAgents, updateMap, removeMap));
}

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From source file:de.javakaffee.kryoserializers.KryoTest.java

@BeforeTest
protected void beforeTest() {
    _kryo = new KryoReflectionFactorySupport() {

        @Override//from  w  w w . ja  va2  s .  c  om
        @SuppressWarnings({ "rawtypes", "unchecked" })
        public Serializer<?> getDefaultSerializer(final Class type) {
            if (EnumSet.class.isAssignableFrom(type)) {
                return new EnumSetSerializer();
            }
            if (EnumMap.class.isAssignableFrom(type)) {
                return new EnumMapSerializer();
            }
            if (Collection.class.isAssignableFrom(type)) {
                return new CopyForIterateCollectionSerializer();
            }
            if (Map.class.isAssignableFrom(type)) {
                return new CopyForIterateMapSerializer();
            }
            if (Date.class.isAssignableFrom(type)) {
                return new DateSerializer(type);
            }
            return super.getDefaultSerializer(type);
        }
    };
    _kryo.setRegistrationRequired(false);
    _kryo.register(Arrays.asList("").getClass(), new ArraysAsListSerializer());
    _kryo.register(Collections.EMPTY_LIST.getClass(), new CollectionsEmptyListSerializer());
    _kryo.register(Collections.EMPTY_MAP.getClass(), new CollectionsEmptyMapSerializer());
    _kryo.register(Collections.EMPTY_SET.getClass(), new CollectionsEmptySetSerializer());
    _kryo.register(Collections.singletonList("").getClass(), new CollectionsSingletonListSerializer());
    _kryo.register(Collections.singleton("").getClass(), new CollectionsSingletonSetSerializer());
    _kryo.register(Collections.singletonMap("", "").getClass(), new CollectionsSingletonMapSerializer());
    _kryo.register(BigDecimal.class, new BigDecimalSerializer());
    _kryo.register(BigInteger.class, new BigIntegerSerializer());
    _kryo.register(Pattern.class, new RegexSerializer());
    _kryo.register(BitSet.class, new BitSetSerializer());
    _kryo.register(URI.class, new URISerializer());
    _kryo.register(UUID.class, new UUIDSerializer());
    _kryo.register(GregorianCalendar.class, new GregorianCalendarSerializer());
    _kryo.register(InvocationHandler.class, new JdkProxySerializer());
    UnmodifiableCollectionsSerializer.registerSerializers(_kryo);
    SynchronizedCollectionsSerializer.registerSerializers(_kryo);
}

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