Example usage for java.util Hashtable get

Introduction

In this page you can find the example usage for java.util Hashtable get.

Prototype

@SuppressWarnings("unchecked")
public synchronized V get(Object key) 

Source Link

Document

Returns the value to which the specified key is mapped, or null if this map contains no mapping for the key.

Usage

From source file:asl.seedscan.SeedScan.java

public static void main(String args[]) {
    // Default locations of config and schema files
    File configFile = new File("config.xml");
    File schemaFile = new File("schemas/SeedScanConfig.xsd");
    boolean parseConfig = true;

    ArrayList<File> schemaFiles = new ArrayList<File>();
    schemaFiles.add(schemaFile);//from www  . j  a v a  2 s  .  c  o  m

    // ==== Command Line Parsing ====
    Options options = new Options();
    Option opConfigFile = new Option("c", "config-file", true,
            "The config file to use for seedscan. XML format according to SeedScanConfig.xsd.");
    Option opSchemaFile = new Option("s", "schema-file", true,
            "The xsd schema file which should be used to verify the config file format. ");

    OptionGroup ogConfig = new OptionGroup();
    ogConfig.addOption(opConfigFile);

    OptionGroup ogSchema = new OptionGroup();
    ogConfig.addOption(opSchemaFile);

    options.addOptionGroup(ogConfig);
    options.addOptionGroup(ogSchema);

    PosixParser optParser = new PosixParser();
    CommandLine cmdLine = null;
    try {
        cmdLine = optParser.parse(options, args, true);
    } catch (org.apache.commons.cli.ParseException e) {
        logger.error("Error while parsing command-line arguments.");
        System.exit(1);
    }

    Option opt;
    Iterator<?> iter = cmdLine.iterator();
    while (iter.hasNext()) {
        opt = (Option) iter.next();
        if (opt.getOpt().equals("c")) {
            configFile = new File(opt.getValue());
        } else if (opt.getOpt().equals("s")) {
            schemaFile = new File(opt.getValue());
        }
    }

    // ==== Configuration Read and Parse Actions ====
    ConfigParser parser = new ConfigParser(schemaFiles);
    ConfigT config = parser.parseConfig(configFile);

    // Print out configuration file contents
    Formatter formatter = new Formatter(new StringBuilder(), Locale.US);

    // ===== CONFIG: LOCK FILE =====
    File lockFile = new File(config.getLockfile());
    logger.info("SeedScan lock file is '" + lockFile + "'");
    LockFile lock = new LockFile(lockFile);
    if (!lock.acquire()) {
        logger.error("Could not acquire lock.");
        System.exit(1);
    }

    // ===== CONFIG: LOGGING =====
    // MTH: This is now done in log4j.properties file

    // ===== CONFIG: DATABASE =====
    MetricDatabase readDB = new MetricDatabase(config.getDatabase());
    MetricDatabase writeDB = new MetricDatabase(config.getDatabase());
    MetricReader reader = new MetricReader(readDB);
    MetricInjector injector = new MetricInjector(writeDB);

    // ===== CONFIG: SCANS =====
    Hashtable<String, Scan> scans = new Hashtable<String, Scan>();
    if (config.getScans().getScan() == null) {
        logger.error("No scans in configuration.");
        System.exit(1);
    } else {
        for (ScanT scanCfg : config.getScans().getScan()) {
            String name = scanCfg.getName();
            if (scans.containsKey(name)) {
                logger.error("Duplicate scan name '" + name + "' encountered.");
                System.exit(1);
            }

            // This should really be handled by jaxb by setting it up in schemas/SeedScanConfig.xsd
            if (scanCfg.getStartDay() == null && scanCfg.getStartDate() == null) {
                logger.error(
                        "== SeedScan Error: Must set EITHER cfg:start_day -OR- cfg:start_date in config.xml to start Scan!");
                System.exit(1);
            }

            // Configure this Scan
            Scan scan = new Scan(scanCfg.getName());
            scan.setPathPattern(scanCfg.getPath());
            scan.setDatalessDir(scanCfg.getDatalessDir());
            scan.setEventsDir(scanCfg.getEventsDir());
            scan.setPlotsDir(scanCfg.getPlotsDir());
            scan.setDaysToScan(scanCfg.getDaysToScan().intValue());
            if (scanCfg.getStartDay() != null) {
                scan.setStartDay(scanCfg.getStartDay().intValue());
            }
            if (scanCfg.getStartDate() != null) {
                scan.setStartDate(scanCfg.getStartDate().intValue());
            }

            if (scanCfg.getNetworkSubset() != null) {
                logger.debug("Filter on Network Subset=[{}]", scanCfg.getNetworkSubset());
                Filter filter = new Filter(false);
                for (String network : scanCfg.getNetworkSubset().split(",")) {
                    logger.debug("Network =[{}]", network);
                    filter.addFilter(network);
                }
                scan.setNetworks(filter);
            }
            if (scanCfg.getStationSubset() != null) {
                logger.debug("Filter on Station Subset=[{}]", scanCfg.getStationSubset());
                Filter filter = new Filter(false);
                for (String station : scanCfg.getStationSubset().split(",")) {
                    logger.debug("Station =[{}]", station);
                    filter.addFilter(station);
                }
                scan.setStations(filter);
            }
            if (scanCfg.getLocationSubset() != null) {
                logger.debug("Filter on Location Subset=[{}]", scanCfg.getLocationSubset());
                Filter filter = new Filter(false);
                for (String location : scanCfg.getLocationSubset().split(",")) {
                    logger.debug("Location =[{}]", location);
                    filter.addFilter(location);
                }
                scan.setLocations(filter);
            }
            if (scanCfg.getChannelSubset() != null) {
                logger.debug("Filter on Channel Subset=[{}]", scanCfg.getChannelSubset());
                Filter filter = new Filter(false);
                for (String channel : scanCfg.getChannelSubset().split(",")) {
                    logger.debug("Channel =[{}]", channel);
                    filter.addFilter(channel);
                }
                scan.setChannels(filter);
            }

            for (MetricT met : scanCfg.getMetrics().getMetric()) {
                try {
                    Class<?> metricClass = Class.forName(met.getClassName());
                    MetricWrapper wrapper = new MetricWrapper(metricClass);
                    for (ArgumentT arg : met.getArgument()) {
                        wrapper.add(arg.getName(), arg.getValue());
                    }
                    scan.addMetric(wrapper);
                } catch (ClassNotFoundException ex) {
                    logger.error("No such metric class '" + met.getClassName() + "'");
                    System.exit(1);
                } catch (InstantiationException ex) {
                    logger.error("Could not dynamically instantiate class '" + met.getClassName() + "'");
                    System.exit(1);
                } catch (IllegalAccessException ex) {
                    logger.error("Illegal access while loading class '" + met.getClassName() + "'");
                    System.exit(1);
                } catch (NoSuchFieldException ex) {
                    logger.error("Invalid dynamic argument to Metric subclass '" + met.getClassName() + "'");
                    System.exit(1);
                }

            }
            scans.put(name, scan);
        }
    }

    // ==== Establish Database Connection ====
    // TODO: State Tracking in the Database
    // - Record scan started in database.
    // - Track our progress as we go so a new process can pick up where
    //   we left off if our process dies.
    // - Mark when each date-station-channel-operation is complete
    //LogDatabaseHandler logDB = new LogDatabaseHandler(configuration.get

    // For each day ((yesterday - scanDepth) to yesterday)
    // scan for these channel files, only process them if
    // they have not yet been scanned, or if changes have
    // occurred to the file since its last scan. Do this for
    // each scan type. Do not re-scan data for each type,
    // launch processes for each scan and use the same data set
    // for each. If we can pipe the data as it is read, do so.
    // If we need to push all of it at once, do these in sequence
    // in order to preserve overall system memory resources.

    Scan scan = null;

    // ==== Perform Scans ====

    scan = scans.get("daily");

    //MTH: This part could/should be moved up higher except that we need to know datalessDir, which,
    //     at this point, is configured on a per scan basis ... so we need to know what scan we're doing
    MetaServer metaServer = null;
    if (config.getMetaserver() != null) {
        if (config.getMetaserver().getUseRemote().equals("yes")
                || config.getMetaserver().getUseRemote().equals("true")) {
            String remoteServer = config.getMetaserver().getRemoteUri();
            try {
                metaServer = new MetaServer(new URI(remoteServer));
            } catch (Exception e) {
                logger.error("caught URI exception:" + e.getMessage());
            }
        } else {
            metaServer = new MetaServer(scan.getDatalessDir());
        }
    } else { // Use local MetaServer
        metaServer = new MetaServer(scan.getDatalessDir());
    }

    List<Station> stations = null;

    if (config.getStationList() == null) { // get StationList from MetaServer
        logger.info("Get StationList from MetaServer");
        stations = metaServer.getStationList();
    } else { // read StationList from config.xml
        logger.info("Read StationList from config.xml");
        List<String> stationList = config.getStationList().getStation();
        if (stationList.size() > 0) {
            stations = new ArrayList<Station>();
            for (String station : stationList) {
                String[] words = station.split("_");
                if (words.length != 2) {
                    logger.warn(String.format("stationList: station=[%s] is NOT a valid station --> Skip",
                            station));
                } else {
                    stations.add(new Station(words[0], words[1]));
                    logger.info("config.xml: Read station:" + station);
                }
            }
        } else {
            logger.error("Error: No valid stations read from config.xml");
        }
    }

    if (stations == null) {
        logger.error("Found NO stations to scan --> EXITTING SeedScan");
        System.exit(1);
    }

    Thread readerThread = new Thread(reader);
    readerThread.start();
    logger.info("Reader thread started.");

    Thread injectorThread = new Thread(injector);
    injectorThread.start();
    logger.info("Injector thread started.");

    // Loop over scans and hand each one to a ScanManager
    logger.info("Hand scan to ScanManager");
    for (String key : scans.keySet()) {
        scan = scans.get(key);
        logger.info(String.format("Scan=[%s] startDay=%d startDate=%d daysToScan=%d\n", key, scan.getStartDay(),
                scan.getStartDate(), scan.getDaysToScan()));
        ScanManager scanManager = new ScanManager(reader, injector, stations, scan, metaServer);
    }

    logger.info("ScanManager is [ FINISHED ] --> stop the injector and reader threads");

    try {
        injector.halt();
        logger.info("All stations processed. Waiting for injector thread to finish...");
        synchronized (injectorThread) {
            //injectorThread.wait();
            injectorThread.interrupt();
        }
        logger.info("Injector thread halted.");
    } catch (InterruptedException ex) {
        logger.warn("The injector thread was interrupted while attempting to complete requests.");
    }

    try {
        reader.halt();
        logger.info("All stations processed. Waiting for reader thread to finish...");
        synchronized (readerThread) {
            //readerThread.wait();
            readerThread.interrupt();
        }
        logger.info("Reader thread halted.");
    } catch (InterruptedException ex) {
        logger.warn("The reader thread was interrupted while attempting to complete requests.");
    }

    try {
        lock.release();
    } catch (IOException e) {
        ;
    } finally {
        logger.info("Release seedscan lock and quit metaServer");
        lock = null;
        metaServer.quit();
    }
}

---

From source file:Main.java

/**
 * return unified reference./*from w  w w  .  j  a v  a2s .com*/
 *
 * @param hash
 *            the hash
 * @param object
 *            the object
 * @return the object
 */
public static Object unifyReferences(final Hashtable hash, Object object) {
    final Object itemAtHash = hash.get(object.hashCode());
    if (itemAtHash == null) {
        hash.put(object.hashCode(), object);
    } else {
        object = itemAtHash;
    }
    return object;
}

---

From source file:Main.java

public static Hashtable<Character, Integer> createHashtable(String text) {
    Hashtable<Character, Integer> textHashTable = new Hashtable<Character, Integer>();

    for (char c : text.toCharArray()) {
        if (textHashTable.get(c) != null) {
            Integer temp = textHashTable.get(c);
            textHashTable.put(c, temp + 1);
        } else {//from w  w  w.j  a v a 2s . c  o  m
            textHashTable.put(c, new Integer(1));
        }
    }
    return textHashTable;
}

---

From source file:Main.java

/**
 * Convert to array./*w w w .j a va  2s  .  co m*/
 * 
 * @param data the data
 * 
 * @return the object[]
 */
private static Object[] convertToArray(Hashtable data) {
    Object[] result = new Object[data.size()];
    for (int i = 0; i < data.size(); i++) {
        result[i] = data.get(i + "");
    }
    return result;
}

---

From source file:Main.java

public static void setButtonStyles(Hashtable<Integer, Button> buttonHash, Boolean undo) {
    int color = (undo) ? Color.RED : Color.BLUE;

    for (Integer bID : buttonHash.keySet()) {
        buttonHash.get(bID).setTextColor(color);
    }//from  www. j ava 2 s.  c  o  m
}

---

From source file:org.jberet.support.io.NoMappingJsonFactoryObjectFactory.java

static void configureInputDecoratorAndOutputDecorator(final JsonFactory jsonFactory,
        final Hashtable<?, ?> environment) throws Exception {
    final Object inputDecorator = environment.get("inputDecorator");
    if (inputDecorator != null) {
        final Class<?> inputDecoratorClass = NoMappingJsonFactoryObjectFactory.class.getClassLoader()
                .loadClass((String) inputDecorator);
        jsonFactory.setInputDecorator((InputDecorator) inputDecoratorClass.newInstance());
    }/* www . j a  va  2  s. c o m*/

    final Object outputDecorator = environment.get("outputDecorator");
    if (outputDecorator != null) {
        final Class<?> outputDecoratorClass = NoMappingJsonFactoryObjectFactory.class.getClassLoader()
                .loadClass((String) outputDecorator);
        jsonFactory.setOutputDecorator((OutputDecorator) outputDecoratorClass.newInstance());
    }
}

---

From source file:Main.java

public static String Map2StringPrettyPrint(Hashtable m) {
    String retString = "";
    Iterator iter = m.keySet().iterator();

    while (iter.hasNext()) {
        String key = (String) iter.next();
        retString += key + " = " + m.get(key) + "\n";
    }// w w  w  .  ja v a 2s. co m

    return (retString.trim());
}

---

From source file:CutPasteSample.java

public static Action findAction(Action actions[], String key) {
    Hashtable commands = new Hashtable();
    for (int i = 0; i < actions.length; i++) {
        Action action = actions[i];
        commands.put(action.getValue(Action.NAME), action);
    }/*from  ww  w.j av  a  2s  .  c  o m*/
    return (Action) commands.get(key);
}

---

From source file:Main.java

public static Hashtable parameterMapToHashtable(Map m) {
    Hashtable ret = new Hashtable();
    ret.putAll(m);/*w w w.  java  2  s  . c o  m*/
    for (Iterator i = ret.keySet().iterator(); i.hasNext();) {
        Object key = i.next();
        String[] value = (String[]) ret.get(key);
        try {
            ret.put(key, value[0]);
        } catch (ArrayIndexOutOfBoundsException e) {
            // This should not happen but if it does just continue
            // processing.
        }
    }
    return ret;
}

---

From source file:Main.java

public static Hashtable contarElementos(Vector list) {
    Hashtable hash = new Hashtable();

    for (int i = 0; i < list.size(); i++) {
        Object key = list.elementAt(i);
        if (hash.containsKey(key)) {
            Integer qtde = new Integer(((Integer) hash.get(key)).intValue() + 1);
            hash.put(key, qtde);/*from w w  w  .j  a  v a  2s  .  co  m*/
        } else {
            hash.put(key, new Integer(1));
        }
    }

    return hash;
}

---

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