Example usage for java.util UUID getLeastSignificantBits

Introduction

In this page you can find the example usage for java.util UUID getLeastSignificantBits.

Prototype

public long getLeastSignificantBits() 

Source Link

Document

Returns the least significant 64 bits of this UUID's 128 bit value.

Usage

From source file:com.codelanx.codelanxlib.util.auth.UUIDFetcher.java

/**
 * Converts a {@link UUID} into bytes//from   w  w w .  ja v a  2  s  .co  m
 * 
 * @since 0.0.1
 * @version 0.0.1
 * 
 * @param uuid The {@link UUID} to convert
 * @return The new byte array
 */
public static byte[] toBytes(UUID uuid) {
    ByteBuffer byteBuffer = ByteBuffer.wrap(new byte[16]);
    byteBuffer.putLong(uuid.getMostSignificantBits());
    byteBuffer.putLong(uuid.getLeastSignificantBits());
    return byteBuffer.array();
}

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From source file:com.linuxbox.enkive.docstore.mongo.FileDocStoreServiceTest.java

private static byte[] generateFakeRandomHash() {
    final byte[] result = new byte[20];
    final UUID u = UUID.randomUUID();

    // transfer bits into array

    long bits = u.getMostSignificantBits();
    for (int i = 0; i < 8; i++) {
        result[i] = (byte) (bits & 0xff);
    }//from   w w  w.j  ava 2 s  .co  m

    bits = u.getLeastSignificantBits();
    for (int i = 8; i < 16; i++) {
        result[i] = (byte) (bits & 0xff);
    }

    // remaining bytes should be 0s

    return result;
}

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From source file:Main.java

public static byte[] randomUUID() {
    long n;//  w  w  w  .  ja va2s .  c o  m
    byte[] result;
    UUID uuid;

    result = new byte[16];
    uuid = UUID.randomUUID();

    n = uuid.getMostSignificantBits();

    result[0] = (byte) (n >> 56 & 0xff);
    result[1] = (byte) (n >> 48 & 0xff);
    result[2] = (byte) (n >> 40 & 0xff);
    result[3] = (byte) (n >> 32 & 0xff);
    result[4] = (byte) (n >> 24 & 0xff);
    result[5] = (byte) (n >> 16 & 0xff);
    result[6] = (byte) (n >> 8 & 0xff);
    result[7] = (byte) (n & 0xff);

    n = uuid.getLeastSignificantBits();

    result[8] = (byte) (n >> 56 & 0xff);
    result[9] = (byte) (n >> 48 & 0xff);
    result[10] = (byte) (n >> 40 & 0xff);
    result[11] = (byte) (n >> 32 & 0xff);
    result[12] = (byte) (n >> 24 & 0xff);
    result[13] = (byte) (n >> 16 & 0xff);
    result[14] = (byte) (n >> 8 & 0xff);
    result[15] = (byte) (n & 0xff);

    return result;
}

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From source file:Main.java

private static byte[] encodeUrnUuid(String urn, int position, ByteBuffer bb) {
    String uuidString = urn.substring(position, urn.length());
    UUID uuid;
    try {//from w w  w. j  av a 2  s  . com
        uuid = UUID.fromString(uuidString);
    } catch (IllegalArgumentException e) {
        //Log.w(TAG, "encodeUrnUuid invalid urn:uuid format - " + urn);
        return null;
    }
    // UUIDs are ordered as byte array, which means most significant first
    bb.order(ByteOrder.BIG_ENDIAN);
    bb.putLong(uuid.getMostSignificantBits());
    bb.putLong(uuid.getLeastSignificantBits());
    return byteBufferToArray(bb);
}

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From source file:com.palantir.atlasdb.ptobject.EncodingUtils.java

public static byte[] encodeUUID(UUID uuid) {
    return ByteBuffer.allocate(2 * Longs.BYTES).order(ByteOrder.BIG_ENDIAN)
            .putLong(uuid.getMostSignificantBits()).putLong(uuid.getLeastSignificantBits()).array();
}

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From source file:org.texai.util.ByteUtils.java

/** Returns the array of bytes resulting from a new UUID.
 *
 * @return the array of bytes resulting from a new UUID
 *///from  www  .  j ava2  s.co m
public static byte[] makeUUIDBytes() {
    final UUID uuid = UUID.randomUUID();
    return append(toBytes(uuid.getMostSignificantBits()), toBytes(uuid.getLeastSignificantBits()));
}

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From source file:org.apache.jackrabbit.oak.segment.Segment.java

/**
 * Determine the gc generation a segment from its data. Note that bulk segments don't have
 * generations (i.e. stay at 0)./*from  ww  w.jav  a2  s . c  o  m*/
 *
 * @param data         the date of the segment
 * @param segmentId    the id of the segment
 * @return  the gc generation of this segment or 0 if this is bulk segment.
 */
public static int getGcGeneration(ByteBuffer data, UUID segmentId) {
    return isDataSegmentId(segmentId.getLeastSignificantBits()) ? data.getInt(GC_GENERATION_OFFSET) : 0;
}

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From source file:org.texai.util.ByteUtils.java

/** Returns the 16-byte array from the given UUID.
 *
 * @param uuid the given UUID//from w w w.j a v  a  2s . co m
 * @return the 16-byte array from the given UUID
 */
public static byte[] toBytes(final UUID uuid) {
    //Preconditions
    assert uuid != null : "uuid must not be null";

    return append(toBytes(uuid.getMostSignificantBits()), toBytes(uuid.getLeastSignificantBits()));
}

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From source file:org.openecomp.core.utilities.CommonMethods.java

/**
 * Gets an universally unique identifier (UUID).
 *
 * @return String representation of generated UUID.
 *///from w  w w. ja  v a  2 s.c  om
public static String nextUuId() {
    UUID uuid = UUID.randomUUID();

    StringBuilder buff = new StringBuilder(32);
    long2string(uuid.getMostSignificantBits(), buff);
    long2string(uuid.getLeastSignificantBits(), buff);

    return buff.toString();
}

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From source file:com.github.nlloyd.hornofmongo.util.BSONizer.java

@SuppressWarnings("deprecation")
public static Object convertBSONtoJS(MongoScope mongoScope, Object bsonObject) {
    Object jsObject = null;/*  w ww. j a v  a  2s  . c om*/
    if (bsonObject instanceof List<?>) {
        List<?> bsonList = (List<?>) bsonObject;
        Scriptable jsArray = (Scriptable) MongoRuntime.call(new NewInstanceAction(mongoScope, bsonList.size()));

        int index = 0;
        for (Object bsonEntry : bsonList) {
            ScriptableObject.putProperty(jsArray, index, convertBSONtoJS(mongoScope, bsonEntry));
            index++;
        }

        jsObject = jsArray;
    } else if (bsonObject instanceof BSONObject) {
        Scriptable jsObj = (Scriptable) MongoRuntime.call(new NewInstanceAction(mongoScope));
        BSONObject bsonObj = (BSONObject) bsonObject;

        for (String key : bsonObj.keySet()) {
            Object value = convertBSONtoJS(mongoScope, bsonObj.get(key));
            MongoRuntime.call(new JSPopulatePropertyAction(jsObj, key, value));
        }
        jsObject = jsObj;
    } else if (bsonObject instanceof Symbol) {
        jsObject = ((Symbol) bsonObject).getSymbol();
    } else if (bsonObject instanceof Date) {
        jsObject = MongoRuntime.call(
                new NewInstanceAction(mongoScope, "Date", new Object[] { ((Date) bsonObject).getTime() }));
    } else if (bsonObject instanceof Pattern) {
        Pattern regex = (Pattern) bsonObject;
        String source = regex.pattern();
        String options = Bytes.regexFlags(regex.flags());
        jsObject = MongoRuntime
                .call(new NewInstanceAction(mongoScope, "RegExp", new Object[] { source, options }));
    } else if (bsonObject instanceof org.bson.types.ObjectId) {
        jsObject = MongoRuntime.call(new NewInstanceAction(mongoScope, "ObjectId"));
        ((ObjectId) jsObject).setRealObjectId((org.bson.types.ObjectId) bsonObject);
    } else if (bsonObject instanceof org.bson.types.MinKey) {
        jsObject = MongoRuntime.call(new NewInstanceAction(mongoScope, "MinKey"));
    } else if (bsonObject instanceof org.bson.types.MaxKey) {
        jsObject = MongoRuntime.call(new NewInstanceAction(mongoScope, "MaxKey"));
    } else if (bsonObject instanceof com.mongodb.DBRef) {
        com.mongodb.DBRef dbRef = (com.mongodb.DBRef) bsonObject;
        Object id = convertBSONtoJS(mongoScope, dbRef.getId());
        jsObject = MongoRuntime.call(
                new NewInstanceAction(mongoScope, "DBRef", new Object[] { dbRef.getCollectionName(), id }));
    } else if (bsonObject instanceof BSONTimestamp) {
        BSONTimestamp bsonTstamp = (BSONTimestamp) bsonObject;
        jsObject = MongoRuntime.call(new NewInstanceAction(mongoScope, "Timestamp",
                new Object[] { bsonTstamp.getTime(), bsonTstamp.getInc() }));
    } else if (bsonObject instanceof Long) {
        jsObject = MongoRuntime.call(new NewInstanceAction(mongoScope, "NumberLong"));
        ((NumberLong) jsObject).setRealLong((Long) bsonObject);
    } else if (bsonObject instanceof Integer) {
        jsObject = Double.valueOf((Integer) bsonObject);
    } else if (bsonObject instanceof Code) {
        jsObject = ((Code) bsonObject).getCode();
    } else if (bsonObject instanceof byte[]) {
        jsObject = MongoRuntime.call(new NewInstanceAction(mongoScope, "BinData"));
        ((BinData) jsObject).setValues(0, (byte[]) bsonObject);
    } else if (bsonObject instanceof Binary) {
        jsObject = MongoRuntime.call(new NewInstanceAction(mongoScope, "BinData"));
        ((BinData) jsObject).setValues(((Binary) bsonObject).getType(), ((Binary) bsonObject).getData());
    } else if (bsonObject instanceof UUID) {
        jsObject = MongoRuntime.call(new NewInstanceAction(mongoScope, "BinData"));
        UUID uuid = (UUID) bsonObject;
        ByteBuffer dataBuffer = ByteBuffer.allocate(16);
        // mongodb wire protocol is little endian
        dataBuffer.order(ByteOrder.LITTLE_ENDIAN);
        dataBuffer.putLong(uuid.getMostSignificantBits());
        dataBuffer.putLong(uuid.getLeastSignificantBits());
        ((BinData) jsObject).setValues(BSON.B_UUID, dataBuffer.array());
    } else {
        jsObject = bsonObject;
    }

    return jsObject;
}

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