Example usage for java.nio ByteBuffer getLong

Introduction

In this page you can find the example usage for java.nio ByteBuffer getLong.

Prototype

public abstract long getLong();

Source Link

Document

Returns the long at the current position and increases the position by 8.

Usage

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

public static UUID decodeUUID(byte[] bytes, int offset) {
    ByteBuffer buf = ByteBuffer.wrap(bytes, offset, 2 * Longs.BYTES).order(ByteOrder.BIG_ENDIAN);
    long mostSigBits = buf.getLong();
    long leastSigBits = buf.getLong();
    return new UUID(mostSigBits, leastSigBits);
}

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

public static UUID decodeFlippedUUID(byte[] bytes, int offset) {
    ByteBuffer buf = ByteBuffer.wrap(bytes, offset, 2 * Longs.BYTES).order(ByteOrder.BIG_ENDIAN);
    long mostSigBits = -1L ^ buf.getLong();
    long leastSigBits = -1L ^ buf.getLong();
    return new UUID(mostSigBits, leastSigBits);
}

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

@SuppressWarnings("deprecation")
private static Object convertScriptableMongoToBSON(ScriptableMongoObject jsMongoObj, boolean isJsObj,
        String dateFormat) {/*  w  w w  .jav  a 2  s.  co  m*/
    Object bsonObject = null;
    if (jsMongoObj instanceof ObjectId) {
        bsonObject = ((ObjectId) jsMongoObj).getRealObjectId();
    } else if (jsMongoObj instanceof BinData) {
        BinData binData = (BinData) jsMongoObj;
        byte type = new Integer(binData.getType()).byteValue();
        byte[] data = binData.getDataBytes();
        if (type == BSON.B_UUID) {
            ByteBuffer dataBuffer = ByteBuffer.wrap(data);
            // mongodb wire protocol is little endian
            dataBuffer.order(ByteOrder.LITTLE_ENDIAN);
            long mostSigBits = dataBuffer.getLong();
            long leastSigBits = dataBuffer.getLong();
            bsonObject = new UUID(mostSigBits, leastSigBits);
        } else
            bsonObject = new org.bson.types.Binary(type, data);
    } else if (jsMongoObj instanceof MinKey) {
        bsonObject = new org.bson.types.MinKey();
    } else if (jsMongoObj instanceof MaxKey) {
        bsonObject = new org.bson.types.MaxKey();
    } else if (jsMongoObj instanceof NumberInt) {
        bsonObject = Integer.valueOf(((NumberInt) jsMongoObj).getRealInt());
    } else if (jsMongoObj instanceof NumberLong) {
        bsonObject = Long.valueOf(((NumberLong) jsMongoObj).getRealLong());
    } else if (jsMongoObj instanceof DBRef) {
        DBRef jsRef = (DBRef) jsMongoObj;
        Object id = convertJStoBSON(jsRef.getId(), isJsObj, dateFormat);
        bsonObject = new com.mongodb.DBRef(jsRef.getNs(), id);
    } else if (jsMongoObj instanceof Timestamp) {
        bsonObject = convertTimestampToBSONTimestamp((Timestamp) jsMongoObj);
    }
    return bsonObject;
}

From source file:org.wso2.carbon.analytics.data.commons.utils.AnalyticsCommonUtils.java

public static String generateRecordID() {
    byte[] data = new byte[16];
    secureRandom.get().nextBytes(data);//www . j a  va2  s. co  m
    ByteBuffer buff = ByteBuffer.wrap(data);
    return new UUID(buff.getLong(), buff.getLong()).toString();
}

From source file:co.cask.cdap.data.tools.ReplicationStatusTool.java

private static Long getTimeFromResult(Result result, String rowType) {
    Long timestamp = 0L;/*from www  .  j ava 2s  .c om*/
    ByteBuffer timestampBuffer = result.getValueAsByteBuffer(
            Bytes.toBytes(ReplicationConstants.ReplicationStatusTool.TIME_FAMILY), Bytes.toBytes(rowType));
    if (timestampBuffer != null) {
        timestamp = timestampBuffer.getLong();
    }
    return timestamp;
}

From source file:org.lenskit.data.packed.BinaryIndexTable.java

/**
 * Create a binary index table.// www.j  a va  2 s.  c o  m
 * @param nentries The number of entries in the table.
 * @param buffer The table buffer.  Its position will be advanced to the end of the table.
 * @return The index table.
 */
public static BinaryIndexTable fromBuffer(int nentries, ByteBuffer buffer) {
    logger.debug("reading table of {} entries", nentries);
    long[] keys = new long[nentries];
    int[] offsets = new int[nentries];
    int[] sizes = new int[nentries];
    // Read the index table's header (IDs, offsets, and counts/sizes).
    int nextExpectedOffset = 0;
    for (int i = 0; i < nentries; i++) {
        keys[i] = buffer.getLong();
        if (i > 0 && keys[i - 1] >= keys[i]) {
            logger.error("key {} is not greater than previous key {}", keys[i], keys[i - 1]);
            throw new IllegalArgumentException("corrupted index table");
        }
        offsets[i] = buffer.getInt();
        sizes[i] = buffer.getInt();
        if (offsets[i] != nextExpectedOffset) {
            logger.error("expected offset {}, got {}", nextExpectedOffset, offsets[i]);
            throw new IllegalArgumentException("corrupted index table");
        }
        nextExpectedOffset += sizes[i];
    }

    // Set up the integer store
    if (buffer.remaining() < nextExpectedOffset * 4) {
        throw new IllegalArgumentException("buffer not large enough");
    }
    int end = buffer.position() + nextExpectedOffset * 4;
    ByteBuffer dup = buffer.duplicate();
    dup.limit(end);
    // update input indexStore's position
    buffer.position(end);
    // create index table object
    LongKeyDomain dom = LongKeyDomain.wrap(keys, keys.length, true);
    return new BinaryIndexTable(dom, offsets, sizes, dup.asIntBuffer());
}

From source file:com.palantir.atlasdb.keyvalue.cassandra.CassandraKeyValueServices.java

static Pair<byte[], Long> decompose(ByteBuffer composite) {
    composite = composite.slice().order(ByteOrder.BIG_ENDIAN);

    short len = composite.getShort();
    byte[] colName = new byte[len];
    composite.get(colName);// ww w. jav a 2 s  .  c o m

    short shouldBeZero = composite.getShort();
    Validate.isTrue(shouldBeZero == 0);

    byte shouldBe8 = composite.get();
    Validate.isTrue(shouldBe8 == 8);
    long ts = composite.getLong();

    return Pair.create(colName, (~ts));
}

From source file:org.cloudata.core.commitlog.pipe.CommitLogFileChannel.java

public static long readLastIndex(FileChannel ch) throws IOException {
    ByteBuffer buf = ByteBuffer.allocate(Long.SIZE / 8);
    long chSize = ch.size();

    if (chSize > 0) {
        ch.position(chSize > (Long.SIZE / 8) ? chSize - (Long.SIZE / 8) : 0);
        ch.read(buf);//from   ww  w .ja va2s.  com
        buf.flip();
        return buf.getLong();
    } else {
        return 0;
    }
}

From source file:com.easemob.dataexport.utils.ConversionUtils.java

/**
 * @param uuid/*  ww w . j a va2  s  .c  o  m*/
 * @param offset
 * @return
 */
public static UUID uuid(byte[] uuid, int offset) {
    ByteBuffer bb = ByteBuffer.wrap(uuid, offset, 16);
    return new UUID(bb.getLong(), bb.getLong());
}

From source file:com.easemob.dataexport.utils.ConversionUtils.java

public static UUID uuid(ByteBuffer bb) {
    if (bb == null) {
        return null;
    }//from w  w  w .ja v  a2 s.  c o m
    if (bb.remaining() < 16) {
        return null;
    }
    bb = bb.slice();
    return new UUID(bb.getLong(), bb.getLong());
}