Example usage for java.nio ByteBuffer putLong

Introduction

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

Prototype

public abstract ByteBuffer putLong(long value);

Source Link

Document

Writes the given long to the current position and increases the position by 8.

Usage

From source file:org.openmrs.module.casereport.DocumentUtil.java

/**
 * Converts the specified uuid to its decimal representation
 * //from w w w  .ja v  a 2  s  . co  m
 * @param uuid the uuid to convert
 * @return a string representation of the decimal number
 */
public static String convertToDecimal(UUID uuid) {
    ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
    bb.putLong(uuid.getMostSignificantBits());
    bb.putLong(uuid.getLeastSignificantBits());
    BigInteger bi = new BigInteger(bb.array());
    //Get the unsigned representation for -ve numbers
    if (bi.compareTo(BigInteger.ZERO) < 0) {
        bi = DECIMAL_REP_COUNT.add(bi);
    }
    return bi.toString();
}

From source file:org.zper.ZPUtils.java

synchronized public static byte[] genTopicIdentity(String topic, int flag) {
    byte[] identity = new byte[1 + 2 + topic.length() + 16];
    ByteBuffer buf = ByteBuffer.wrap(identity);
    UUID uuid = UUID.randomUUID();

    buf.put((byte) topic.hashCode());
    buf.put((byte) flag);
    buf.put((byte) topic.length());
    buf.put(topic.getBytes());//from   w  w w.  j av a 2 s. c  om
    buf.putLong(uuid.getMostSignificantBits());
    buf.putLong(uuid.getLeastSignificantBits());

    return identity;
}

From source file:ConversionUtil.java

public static byte[] convertToByteArray(long value) {

    byte[] bytes = new byte[8];
    ByteBuffer buffer = ByteBuffer.allocate(bytes.length);
    buffer.putLong(value);
    return buffer.array();
    // buffer.get(bytes);
    /*//from  ww w  .j  a va  2  s.c  o m
    for (int i =0;i<bytes.length; ++i) {
    int offset = (bytes.length -i-1) *8;
    bytes[i] = (byte)((value & (0xff << offset)) >>> offset);
    }
     */
    // return bytes;

}

From source file:org.hobbit.core.rabbit.RabbitMQUtils.java

/**
 * Creates a byte array representing the given long value.
 *
 * @param value/*from  w w w  .  java2s  .co m*/
 *            the value that should be serialized
 * @return the byte array containing the given long value
 */
public static byte[] writeLong(long value) {
    ByteBuffer buffer = ByteBuffer.allocate(Long.BYTES);
    buffer.putLong(value);
    return buffer.array();
}

From source file:com.datatorrent.contrib.hdht.HDHTDynamicPartitioningTest.java

static Slice getLongByteArray(long key) {
    ByteBuffer bb = ByteBuffer.allocate(8);
    bb.putLong(key);
    return new Slice(bb.array());
}

From source file:com.monitor.baseservice.utils.XCodeUtil.java

public static byte[] longToByteArray(long value) {
    ByteBuffer bb = ByteBuffer.allocate(Long.SIZE / Byte.SIZE);
    bb.order(ByteOrder.LITTLE_ENDIAN);
    bb.putLong(value);
    return bb.array();
}

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

/**
 * Converts a {@link UUID} into bytes//from   w w  w  .jav a2s  . c o  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();
}

From source file:com.inmobi.messaging.util.AuditUtil.java

public static void attachHeaders(Message m, Long timestamp) {
    byte[] b = m.getData().array();
    int messageSize = b.length;
    int totalSize = messageSize + HEADER_LENGTH;
    ByteBuffer buffer = ByteBuffer.allocate(totalSize);

    // writing version
    buffer.put((byte) currentVersion);
    // writing magic bytes
    buffer.put(magicBytes);/*  w ww . jav a2s  . com*/
    // writing timestamp
    long time = timestamp;
    buffer.putLong(time);

    // writing message size
    buffer.putInt(messageSize);
    // writing message
    buffer.put(b);
    buffer.rewind();
    m.set(buffer);
    // return new Message(buffer);

}

From source file:io.stallion.utils.GeneralUtils.java

/**
 * Turn the given long id into a random base32 string token. This can be used for generating unique, secret strings
 * for accessing data, such as a web page only viewable by a secret string. By using the long id, of the
 * underlying object we guarantee uniqueness, by adding on  random characters, we make the URL nigh
 * impossible to guess./*w  ww. j a  v a2  s  .co m*/
 *
 * @param id - a long id that will be convered to base32 and used as the first part of the string
 * @param length - the number of random base32 characters to add to the end of the string
 * @return
 */
public static String tokenForId(Long id, int length) {
    ByteBuffer buffer = ByteBuffer.allocate(Long.BYTES);
    buffer.putLong(id);
    return StringUtils.stripStart(new Base32().encodeAsString(buffer.array()), "A").replace("=", "")
            .toLowerCase() + "8" + randomTokenBase32(length);
}

From source file:edu.stanford.mobisocial.dungbeetle.model.DbObject.java

private static int colorFor(Long hash) {
    float[] baseHues = Feed.getBaseHues();
    ByteBuffer bos = ByteBuffer.allocate(8);
    bos.putLong(hash);
    byte[] hashBytes = new byte[8];
    bos.position(0);/*from  w ww  .j a  v  a  2  s .c o m*/
    bos.get(hashBytes);
    SecureRandom r = new SecureRandom(hashBytes);
    float hsv[] = new float[] { baseHues[r.nextInt(baseHues.length)], r.nextFloat(), r.nextFloat() };
    hsv[0] = hsv[0] + 20 * r.nextFloat() - 10;
    hsv[1] = hsv[1] * 0.2f + 0.8f;
    hsv[2] = hsv[2] * 0.2f + 0.8f;
    return Color.HSVToColor(hsv);
}