Example usage for java.lang String intern

Introduction

In this page you can find the example usage for java.lang String intern.

Prototype

public native String intern();

Source Link

Document

Returns a canonical representation for the string object.

Usage

From source file:org.lenskit.data.entities.TypedName.java

/**
 * Create a typed name object.//  w  ww  . j  a v  a 2 s  . c o m
 *
 * @param name The name.
 * @param type The type.
 * @return An object encapsulating the specified name and type.
 */
@SuppressWarnings("unchecked")
@Nonnull
public static <T> TypedName<T> create(String name, Class<T> type) {
    Preconditions.checkNotNull(name, "name");
    Preconditions.checkNotNull(type, "type");
    if (type.isPrimitive()) {
        type = (Class<T>) ClassUtils.primitiveToWrapper(type);
    }
    TypedName<T> attribute = new TypedName<>(name.intern(), type);
    return (TypedName<T>) FIELD_CACHE.intern(attribute);
}

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From source file:de.tudarmstadt.ukp.dkpro.core.corenlp.internal.CoreNlp2DKPro.java

public static void convertPOSs(JCas aJCas, Annotation document, MappingProvider mappingProvider,
        boolean internStrings) {
    for (CoreMap s : document.get(SentencesAnnotation.class)) {
        for (CoreLabel t : s.get(TokensAnnotation.class)) {
            Token token = t.get(TokenKey.class);
            String tag = t.get(PartOfSpeechAnnotation.class);
            Type tagType = mappingProvider.getTagType(tag);
            POS anno = (POS) aJCas.getCas().createAnnotation(tagType, token.getBegin(), token.getEnd());
            anno.setPosValue(internStrings ? tag.intern() : tag);
            anno.setCoarseValue(/*w w  w .ja va  2  s .  co  m*/
                    anno.getClass().equals(POS.class) ? null : anno.getType().getShortName().intern());
            anno.addToIndexes();
            token.setPos(anno);
        }
    }
}

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From source file:com.opengamma.engine.value.ValueRequirement.java

public static String getInterned(final String valueName) {
    //This has been observed to be faster if a large proportion of valueNames are already interned and we have a large number of cores
    String interned = s_interned.get(valueName);
    if (interned != null) {
        return interned;
    }//from  www  .  jav  a 2  s  .  co m
    interned = valueName.intern();
    s_interned.putIfAbsent(interned, interned); //NOTE: use interned for keys too
    return interned;
}

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From source file:de.tudarmstadt.ukp.dkpro.core.corenlp.internal.CoreNlp2DKPro.java

public static void convertDependencies(JCas aJCas, Annotation document, MappingProvider mappingProvider,
        boolean internStrings) {
    for (CoreMap s : document.get(SentencesAnnotation.class)) {
        SemanticGraph graph = s.get(CollapsedDependenciesAnnotation.class);
        //SemanticGraph graph = s.get(EnhancedDependenciesAnnotation.class);

        // If there are no dependencies for this sentence, skip it. Might well mean we
        // skip all sentences because normally either there are dependencies for all or for
        // none.//  ww  w.  j  a  va 2 s.c  o m
        if (graph == null) {
            continue;
        }

        for (IndexedWord root : graph.getRoots()) {
            Dependency dep = new ROOT(aJCas);
            dep.setDependencyType("root");
            dep.setDependent(root.get(TokenKey.class));
            dep.setGovernor(root.get(TokenKey.class));
            dep.setBegin(dep.getDependent().getBegin());
            dep.setEnd(dep.getDependent().getEnd());
            dep.setFlavor(DependencyFlavor.BASIC);
            dep.addToIndexes();
        }

        for (SemanticGraphEdge edge : graph.edgeListSorted()) {
            Token dependent = edge.getDependent().get(TokenKey.class);
            Token governor = edge.getGovernor().get(TokenKey.class);

            // For the type mapping, we use getShortName() instead, because the <specific>
            // actually doesn't change the relation type
            String labelUsedForMapping = edge.getRelation().getShortName();

            // The nndepparser may produce labels in which the shortName contains a colon.
            // These represent language-specific labels of the UD, cf: 
            // http://universaldependencies.github.io/docs/ext-dep-index.html
            labelUsedForMapping = StringUtils.substringBefore(labelUsedForMapping, ":");

            // Need to use toString() here to get "<shortname>_<specific>"
            String actualLabel = edge.getRelation().toString();

            Type depRel = mappingProvider.getTagType(labelUsedForMapping);
            Dependency dep = (Dependency) aJCas.getCas().createFS(depRel);
            dep.setDependencyType(internStrings ? actualLabel.intern() : actualLabel);
            dep.setDependent(dependent);
            dep.setGovernor(governor);
            dep.setBegin(dep.getDependent().getBegin());
            dep.setEnd(dep.getDependent().getEnd());
            dep.setFlavor(edge.isExtra() ? DependencyFlavor.ENHANCED : DependencyFlavor.BASIC);
            dep.addToIndexes();
        }
    }
}

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From source file:org.apache.hadoop.mapreduce.v2.jobhistory.JobHistoryUtils.java

/**Extracts the timstamp component from the path.
 * @param path//from  www .  j  a  va  2s .  c  o  m
 * @return the timestamp component from the path
 */
public static String getTimestampPartFromPath(String path) {
    Matcher matcher = TIMESTAMP_DIR_PATTERN.matcher(path);
    if (matcher.find()) {
        String matched = matcher.group();
        String ret = matched.intern();
        return ret;
    } else {
        return null;
    }
}

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From source file:org.wso2.carbon.core.multitenancy.utils.TenantAxisUtils.java

/**
 * Create Tenant Axis2 ConfigurationContexts & add them to the main Axis2 ConfigurationContext
 *
 * @param mainConfigCtx Super-tenant Axis2 ConfigurationContext
 * @param tenantDomain  Tenant domain (e.g. foo.com)
 * @return The newly created Tenant ConfigurationContext
 * @throws Exception If an error occurs while creating tenant ConfigurationContext
 *///from   w ww  .j  a  va  2  s.c om
private static ConfigurationContext createTenantConfigurationContext(ConfigurationContext mainConfigCtx,
        String tenantDomain) throws Exception {
    synchronized (tenantDomain.intern()) { // lock based on tenant domain
        Map<String, ConfigurationContext> tenantConfigContexts = getTenantConfigurationContexts(mainConfigCtx);
        ConfigurationContext tenantConfigCtx = tenantConfigContexts.get(tenantDomain);
        if (tenantConfigCtx != null) {
            return tenantConfigCtx;
        }
        long tenantLoadingStartTime = System.currentTimeMillis();
        int tenantId = getTenantId(tenantDomain);
        if (tenantId == MultitenantConstants.SUPER_TENANT_ID
                || tenantId == MultitenantConstants.INVALID_TENANT_ID) {
            throw new Exception("Tenant " + tenantDomain + " does not exist");
        }
        PrivilegedCarbonContext carbonContext = PrivilegedCarbonContext.getThreadLocalCarbonContext();
        carbonContext.setTenantId(tenantId);
        carbonContext.setTenantDomain(tenantDomain);

        tenantConfigCtx = tenantConfigContexts.get(tenantDomain);
        if (tenantConfigCtx != null) {
            return tenantConfigCtx;
        }

        AxisConfiguration mainAxisConfig = mainConfigCtx.getAxisConfiguration();

        dataHolder.getTenantRegistryLoader().loadTenantRegistry(tenantId);

        try {
            UserRegistry tenantConfigRegistry = dataHolder.getRegistryService()
                    .getConfigSystemRegistry(tenantId);
            UserRegistry tenantLocalUserRegistry = dataHolder.getRegistryService().getLocalRepository(tenantId);
            TenantAxisConfigurator tenantAxisConfigurator = new TenantAxisConfigurator(mainAxisConfig,
                    tenantDomain, tenantId, tenantConfigRegistry, tenantLocalUserRegistry);
            doPreConfigContextCreation(tenantId);
            tenantConfigCtx = ConfigurationContextFactory.createConfigurationContext(tenantAxisConfigurator);

            AxisConfiguration tenantAxisConfig = tenantConfigCtx.getAxisConfiguration();

            tenantConfigCtx.setServicePath(CarbonUtils.getAxis2ServicesDir(tenantAxisConfig));
            tenantConfigCtx.setContextRoot("local:/");

            TenantTransportSender transportSender = new TenantTransportSender(mainConfigCtx);
            // Adding transport senders
            HashMap<String, TransportOutDescription> transportSenders = mainAxisConfig.getTransportsOut();
            if (transportSenders != null && !transportSenders.isEmpty()) {
                for (String strTransport : transportSenders.keySet()) {
                    TransportOutDescription outDescription = new TransportOutDescription(strTransport);
                    outDescription.setSender(transportSender);
                    tenantAxisConfig.addTransportOut(outDescription);
                }
            }

            // Set the work directory
            tenantConfigCtx.setProperty(ServerConstants.WORK_DIR,
                    mainConfigCtx.getProperty(ServerConstants.WORK_DIR));
            PrivilegedCarbonContext.getThreadLocalCarbonContext().setTenantId(tenantId);
            new TransportPersistenceManager(tenantAxisConfig).updateEnabledTransports(
                    tenantAxisConfig.getTransportsIn().values(), tenantAxisConfig.getTransportsOut().values());

            // Notify all observers
            BundleContext bundleContext = dataHolder.getBundleContext();
            if (bundleContext != null) {
                ServiceTracker tracker = new ServiceTracker(bundleContext,
                        Axis2ConfigurationContextObserver.class.getName(), null);
                tracker.open();
                Object[] services = tracker.getServices();
                if (services != null) {
                    for (Object service : services) {
                        ((Axis2ConfigurationContextObserver) service)
                                .createdConfigurationContext(tenantConfigCtx);
                    }
                }
                tracker.close();
            }
            tenantConfigCtx.setProperty(MultitenantConstants.LAST_ACCESSED, System.currentTimeMillis());

            // Register Capp deployer for this tenant
            Utils.addCAppDeployer(tenantAxisConfig);

            //deploy the services since all the deployers are initialized by now.
            tenantAxisConfigurator.deployServices();

            //tenant config context must only be made after the tenant is fully loaded, and all its artifacts
            //are deployed.
            // -- THIS SHOULD BE THE LAST OPERATION OF THIS METHOD --
            tenantConfigContexts.put(tenantDomain, tenantConfigCtx);

            log.info("Loaded tenant " + tenantDomain + " in "
                    + (System.currentTimeMillis() - tenantLoadingStartTime) + " ms");

            return tenantConfigCtx;
        } catch (Exception e) {
            String msg = "Error occurred while running deployment for tenant ";
            log.error(msg + tenantDomain, e);
            throw new Exception(msg, e);
        }
    }
}

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From source file:org.wso2.carbon.core.multitenancy.utils.TenantAxisUtils.java

/**
 * Traverse the list of tenants and cleanup tenants which have been idling for longer than
 * <code>tenantIdleTimeMillis</code>
 *
 * @param tenantIdleTimeMillis The maximum tenant idle time in milliseconds
 *///  w ww.jav a 2  s .  c  om
public static void cleanupTenants(long tenantIdleTimeMillis) {
    ConfigurationContext mainServerConfigContext = CarbonCoreDataHolder.getInstance()
            .getMainServerConfigContext();
    if (mainServerConfigContext == null) {
        return;
    }
    Map<String, ConfigurationContext> tenantConfigContexts = getTenantConfigurationContexts(
            mainServerConfigContext);
    ArrayList<String> eagerLoadedTenants = TenantEagerLoader.getEagerLoadingTenantList();
    for (Map.Entry<String, ConfigurationContext> entry : tenantConfigContexts.entrySet()) {
        String tenantDomain = entry.getKey();
        // Only unload the tenant if it's not in EagerLoading tenant list
        if (!eagerLoadedTenants.contains(tenantDomain)) {
            synchronized (tenantDomain.intern()) {
                ConfigurationContext tenantCfgCtx = entry.getValue();
                Long lastAccessed = (Long) tenantCfgCtx.getProperty(MultitenantConstants.LAST_ACCESSED);
                if (System.currentTimeMillis() - lastAccessed >= tenantIdleTimeMillis) {
                    // Get the write lock.
                    Lock tenantWriteLock = tenantReadWriteLocks.get(tenantDomain).writeLock();
                    tenantWriteLock.lock();
                    try {
                        lastAccessed = (Long) tenantCfgCtx.getProperty(MultitenantConstants.LAST_ACCESSED);
                        if (System.currentTimeMillis() - lastAccessed >= tenantIdleTimeMillis) {
                            try {
                                PrivilegedCarbonContext.startTenantFlow();
                                // Creating CarbonContext object for these threads.
                                PrivilegedCarbonContext carbonContext = PrivilegedCarbonContext
                                        .getThreadLocalCarbonContext();
                                carbonContext.setTenantDomain(tenantDomain, true);

                                // Terminating idle tenant configuration contexts.
                                terminateTenantConfigContext(tenantCfgCtx);
                                tenantConfigContexts.remove(tenantDomain);
                            } finally {
                                PrivilegedCarbonContext.endTenantFlow();
                            }
                        }
                    } finally {
                        tenantWriteLock.unlock();
                    }
                }
            }
        }
    }
}

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From source file:de.tudarmstadt.ukp.dkpro.core.corenlp.internal.CoreNlp2DKPro.java

public static void convertNamedEntities(JCas aJCas, Annotation document, MappingProvider mappingProvider,
        boolean internStrings) {
    for (CoreMap s : document.get(SentencesAnnotation.class)) {
        for (CoreLabel t : s.get(TokensAnnotation.class)) {
            Token token = t.get(TokenKey.class);
            String tag = t.get(NamedEntityTagAnnotation.class);

            // "O" is the hard-coded tag in CoreNLP to indicate no NER on this token
            if ("O".equals(tag)) {
                continue;
            }/* w ww .j  a  va2s .  c  o  m*/

            Type tagType = mappingProvider.getTagType(tag);
            NamedEntity anno = (NamedEntity) aJCas.getCas().createAnnotation(tagType, token.getBegin(),
                    token.getEnd());
            anno.setValue(internStrings ? tag.intern() : tag);
            anno.addToIndexes();
        }
    }
}

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From source file:org.opencms.i18n.CmsEncoder.java

/**
 * Creates a String out of a byte array with the specified encoding, falling back
 * to the system default in case the encoding name is not valid.<p>
 * /*from   ww  w  . j av  a2s .c om*/
 * Use this method as a replacement for <code>new String(byte[], encoding)</code>
 * to avoid possible encoding problems.<p>
 * 
 * @param bytes the bytes to decode 
 * @param encoding the encoding scheme to use for decoding the bytes
 * 
 * @return the bytes decoded to a String
 */
public static String createString(byte[] bytes, String encoding) {

    String enc = encoding.intern();
    if (enc != OpenCms.getSystemInfo().getDefaultEncoding()) {
        enc = lookupEncoding(enc, null);
    }
    if (enc != null) {
        try {
            return new String(bytes, enc);
        } catch (UnsupportedEncodingException e) {
            // this can _never_ happen since the charset was looked up first 
        }
    } else {
        if (LOG.isWarnEnabled()) {
            LOG.warn(Messages.get().getBundle().key(Messages.ERR_UNSUPPORTED_VM_ENCODING_1, encoding));
        }
        enc = OpenCms.getSystemInfo().getDefaultEncoding();
        try {
            return new String(bytes, enc);
        } catch (UnsupportedEncodingException e) {
            // this can also _never_ happen since the default encoding is always valid
        }
    }
    // this code is unreachable in practice
    LOG.error(Messages.get().getBundle().key(Messages.ERR_ENCODING_ISSUES_1, encoding));
    return null;
}

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From source file:com.magic.util.StringUtil.java

public static String internString(String value) {
    return value != null ? value.intern() : null;
}

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