Example usage for java.lang String hashCode

List of usage examples for java.lang String hashCode

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Introduction

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

Prototype

public int hashCode()

Source Link

Document

Returns a hash code for this string.

Usage

From source file:net.myrrix.online.eval.AbstractEvaluator.java

private static DataFileContents readDataFile(File dataDir, double evaluationPercentage,
        RescorerProvider provider) throws IOException {
    // evaluationPercentage filters per user and item, not per datum, since time scales with users and
    // items. We select sqrt(evaluationPercentage) of users and items to overall select about evaluationPercentage
    // of all data.
    int perMillion = (int) (1000000 * FastMath.sqrt(evaluationPercentage));

    Multimap<Long, RecommendedItem> data = ArrayListMultimap.create();
    Multimap<String, RecommendedItem> itemTags = ArrayListMultimap.create();
    Multimap<String, RecommendedItem> userTags = ArrayListMultimap.create();

    for (File dataFile : dataDir.listFiles(new PatternFilenameFilter(".+\\.csv(\\.(zip|gz))?"))) {
        log.info("Reading {}", dataFile);
        int count = 0;
        for (CharSequence line : new FileLineIterable(dataFile)) {
            Iterator<String> parts = COMMA_TAB_SPLIT.split(line).iterator();
            String userIDString = parts.next();
            if (userIDString.hashCode() % 1000000 <= perMillion) {
                String itemIDString = parts.next();
                if (itemIDString.hashCode() % 1000000 <= perMillion) {

                    Long userID = null;
                    boolean userIsTag = userIDString.startsWith("\"");
                    if (!userIsTag) {
                        userID = Long.valueOf(userIDString);
                    }//from  w  ww  .jav  a 2s.  c o m

                    boolean itemIsTag = itemIDString.startsWith("\"");
                    Long itemID = null;
                    if (!itemIsTag) {
                        itemID = Long.valueOf(itemIDString);
                    }

                    Preconditions.checkArgument(!(userIsTag && itemIsTag),
                            "Can't have a user tag and item tag in one line");

                    if (parts.hasNext()) {
                        String token = parts.next().trim();
                        if (!token.isEmpty()) {
                            float value = LangUtils.parseFloat(token);
                            if (userIsTag) {
                                itemTags.put(userIDString, new GenericRecommendedItem(itemID, value));
                            } else if (itemIsTag) {
                                userTags.put(itemIDString, new GenericRecommendedItem(userID, value));
                            } else {
                                if (provider != null) {
                                    IDRescorer rescorer = provider.getRecommendRescorer(new long[] { userID },
                                            null);
                                    if (rescorer != null) {
                                        value = (float) rescorer.rescore(itemID, value);
                                    }
                                }
                                data.put(userID, new GenericRecommendedItem(itemID, value));
                            }
                        }
                        // Ignore remove lines
                    } else {
                        if (userIsTag) {
                            itemTags.put(userIDString, new GenericRecommendedItem(itemID, 1.0f));
                        } else if (itemIsTag) {
                            userTags.put(itemIDString, new GenericRecommendedItem(userID, 1.0f));
                        } else {
                            float value = 1.0f;
                            if (provider != null) {
                                IDRescorer rescorer = provider.getRecommendRescorer(new long[] { userID },
                                        null);
                                if (rescorer != null) {
                                    value = (float) rescorer.rescore(itemID, value);
                                }
                            }
                            data.put(userID, new GenericRecommendedItem(itemID, value));
                        }
                    }
                }
            }
            if (++count % 1000000 == 0) {
                log.info("Finished {} lines", count);
            }
        }
    }

    return new DataFileContents(data, itemTags, userTags);
}

From source file:com.mawujun.util.AnnotationUtils.java

/**
 * Helper method for generating a hash code for a member of an annotation.
 *
 * @param name the name of the member//from   www.j  a v a  2  s .c o  m
 * @param value the value of the member
 * @return a hash code for this member
 */
private static int hashMember(String name, Object value) {
    int part1 = name.hashCode() * 127;
    if (value.getClass().isArray()) {
        return part1 ^ arrayMemberHash(value.getClass().getComponentType(), value);
    }
    if (value instanceof Annotation) {
        return part1 ^ hashCode((Annotation) value);
    }
    return part1 ^ value.hashCode();
}

From source file:Main.java

public static String getDeviceUUID(Context context) {

    @SuppressWarnings("static-access")
    final TelephonyManager tm = (TelephonyManager) context.getSystemService(context.TELEPHONY_SERVICE);

    final String tmDevice, tmSerial, tmPhone, androidId;

    tmDevice = "" + tm.getDeviceId();

    tmSerial = "" + tm.getSimSerialNumber();

    androidId = "" + android.provider.Settings.Secure.getString(context.getContentResolver(),
            android.provider.Settings.Secure.ANDROID_ID);

    UUID deviceUuid = new UUID(androidId.hashCode(), ((long) tmDevice.hashCode() << 32) | tmSerial.hashCode());

    String uniqueId = deviceUuid.toString();

    Log.d("debug", "uuid=" + uniqueId);

    return uniqueId;
}

From source file:main.java.utils.Utility.java

public static long javaHash(String key) {
    return key.hashCode();
}

From source file:Main.java

/**
 * this generate the device Id/*  w  ww.  j  av  a  2s. c  o  m*/
 *
 * @param baseContext
 * @param contentResolver
 * @return
 */
//http://stackoverflow.com/questions/2785485/is-there-a-unique-android-device-id
public static String generateDeviceId(Context baseContext, ContentResolver contentResolver) {

    final TelephonyManager tm = (TelephonyManager) baseContext.getSystemService(Context.TELEPHONY_SERVICE);

    final String tmDevice, tmSerial, androidId;
    tmDevice = String.valueOf(tm.getDeviceId());
    tmSerial = String.valueOf(tm.getSimSerialNumber());
    androidId = String.valueOf(android.provider.Settings.Secure.getString(contentResolver,
            android.provider.Settings.Secure.ANDROID_ID));

    UUID deviceUuid = new UUID(androidId.hashCode(), ((long) tmDevice.hashCode() << 32) | tmSerial.hashCode());
    return deviceUuid.toString();

}

From source file:Main.java

public static String getDeviceId(Context context) {

    if (deviceId == null) {

        TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);

        String tmDevice, tmSerial, tmPhone, androidId;
        tmDevice = "" + tm.getDeviceId();
        tmSerial = "" + tm.getSimSerialNumber();
        androidId = "" + android.provider.Settings.Secure.getString(context.getContentResolver(),
                android.provider.Settings.Secure.ANDROID_ID);

        UUID deviceUuid = new UUID(androidId.hashCode(),
                ((long) tmDevice.hashCode() << 32) | tmSerial.hashCode());
        deviceId = deviceUuid.toString();

        System.err.println(deviceId);
    }/* w ww . j  av  a 2 s  . co m*/
    return deviceId;
}

From source file:com.njlabs.amrita.aid.util.Identifier.java

@SuppressLint("HardwareIds")
public static String identify(Context context) {
    final TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);

    final String tmDevice, tmSerial, androidId;
    tmDevice = "" + tm.getDeviceId();
    tmSerial = "" + tm.getSimSerialNumber();
    androidId = "" + android.provider.Settings.Secure.getString(context.getContentResolver(),
            android.provider.Settings.Secure.ANDROID_ID);

    UUID deviceUuid = new UUID(androidId.hashCode(), ((long) tmDevice.hashCode() << 32) | tmSerial.hashCode());
    return deviceUuid.toString();
}

From source file:com.ge.predix.acs.policy.evaluation.cache.AbstractPolicyEvaluationCache.java

static String subjectKey(final String zoneId, final String subjectId) {
    return zoneId + ":sub-id:" + Integer.toHexString(subjectId.hashCode());
}

From source file:com.ge.predix.acs.policy.evaluation.cache.AbstractPolicyEvaluationCache.java

static String resourceKey(final String zoneId, final String resourceId) {
    return zoneId + ":res-id:" + Integer.toHexString(resourceId.hashCode());
}

From source file:com.ge.predix.acs.policy.evaluation.cache.AbstractPolicyEvaluationCache.java

static String resourceTranslationKey(final String zoneId, final String resourceId) {
    return zoneId + ":rtr-id:" + Integer.toHexString(resourceId.hashCode());
}