Example usage for java.io DataOutputStream writeLong

Introduction

In this page you can find the example usage for java.io DataOutputStream writeLong.

Prototype

public final void writeLong(long v) throws IOException

Source Link

Document

Writes a long to the underlying output stream as eight bytes, high byte first.

Usage

From source file:com.enonic.cms.framework.util.UUIDGenerator.java

/**
 * Generate random uuid.//from w w w. j  ava2 s  .  c  o m
 */
public static String randomUUID() {
    UUID uuid = UUID.randomUUID();

    try {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        DataOutputStream dataOut = new DataOutputStream(out);
        dataOut.writeLong(uuid.getMostSignificantBits());
        dataOut.writeLong(uuid.getLeastSignificantBits());
        dataOut.close();
        return new String(Hex.encodeHex(out.toByteArray()));
    } catch (Exception e) {
        return uuid.toString();
    }
}

From source file:Main.java

public static byte[] createAuthenticationDigest(String passcode, long t1, double q1)
        throws IOException, NoSuchAlgorithmException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream(512);
    DataOutputStream out = new DataOutputStream(baos);
    byte[] digest = createDigest(passcode, t1, q1);
    out.writeLong(t1);
    out.writeDouble(q1);/*ww w .j  a  v a 2 s  .c om*/
    out.writeInt(digest.length);
    out.write(digest);
    out.flush();
    return baos.toByteArray();
}

From source file:org.apache.hadoop.hdfs.qjournal.client.TestQuorumJournalManagerManifest.java

public static byte[] getBytes(Long val) throws IOException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    DataOutputStream dos = new DataOutputStream(baos);
    dos.writeLong(val);
    return baos.toByteArray();
}

From source file:org.globus.ftp.dc.EBlockImageDCWriter.java

public static void close(DataOutputStream myOutput) throws IOException {
    byte desc;//from ww  w  . j  a v  a  2 s .  c  o  m
    // EOF and EOD have already been sent
    desc = WILL_CLOSE;
    myOutput.writeByte(desc);
    myOutput.writeLong(0);
    myOutput.writeLong(0);
    logger.debug("Wrote WILL_CLOSE, closing the socket");

    // close the socket
    myOutput.close();
}

From source file:fiftyone.mobile.detection.webapp.JavascriptProvider.java

/**
 * Returns a base 64 encoded version of the hash for the core JavaScript
 * being returned./*from   w ww  . j  av  a2s.c  o m*/
 * @param dataSet providing the JavaScript properties.
 * @param request
 * @return 
 */
private static String eTagHash(Dataset dataSet, HttpServletRequest request)
        throws IOException, NoSuchAlgorithmException {
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    DataOutputStream dos = new DataOutputStream(bos);
    dos.writeLong(dataSet.published.getTime());
    dos.writeChars(request.getHeader("User-Agent"));
    dos.writeChars(request.getQueryString());
    return Base64.encodeBase64String(MessageDigest.getInstance("MD5").digest(bos.toByteArray()));
}

From source file:org.tranche.server.logs.LogUtil.java

/**
 * Convert long to bytes and return the byte array representation.
 * @param value/*from  w  ww . j a  va  2  s  .  co  m*/
 * @return
 * @throws java.lang.Exception
 */
public static byte[] convertLongToBytes(long value) throws Exception {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    DataOutputStream dos = new DataOutputStream(baos);
    dos.writeLong(value);
    dos.flush();

    try {
        return baos.toByteArray();
    } finally {
        dos.close();
    }
}

From source file:org.apache.flink.runtime.metrics.dump.MetricDumpSerialization.java

private static void serializeCounter(DataOutputStream dos, Counter counter) throws IOException {
    dos.writeLong(counter.getCount());
}

From source file:org.mobisocial.corral.CorralClient.java

private static String hashToString(long hash) {
    try {//w w w  .ja  v a  2 s. c o  m
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        DataOutputStream dos = new DataOutputStream(bos);
        dos.writeLong(hash);
        dos.writeInt(-4);
        byte[] data = bos.toByteArray();
        return FastBase64.encodeToString(data).substring(0, 11);
    } catch (IOException e) {
        return null;
    }
}

From source file:com.opensoc.json.serialization.JSONEncoderHelper.java

public static void putNumber(DataOutputStream data, Number value) throws IOException {
    // TODO Auto-generated method stub
    data.writeByte(JSONKafkaSerializer.NumberID);
    if (value instanceof Double) {
        data.writeByte(0);/*from  www . j  a  va  2 s.c o m*/
        data.writeDouble((Double) value);
        return;
    }
    data.writeByte(1);
    data.writeLong((Long) value);

}

From source file:org.apache.flink.runtime.metrics.dump.MetricDumpSerialization.java

private static void serializeHistogram(DataOutputStream dos, Histogram histogram) throws IOException {
    HistogramStatistics stat = histogram.getStatistics();

    dos.writeLong(stat.getMin());
    dos.writeLong(stat.getMax());/*from w  w w  .j av  a 2 s  . co  m*/
    dos.writeDouble(stat.getMean());
    dos.writeDouble(stat.getQuantile(0.5));
    dos.writeDouble(stat.getStdDev());
    dos.writeDouble(stat.getQuantile(0.75));
    dos.writeDouble(stat.getQuantile(0.90));
    dos.writeDouble(stat.getQuantile(0.95));
    dos.writeDouble(stat.getQuantile(0.98));
    dos.writeDouble(stat.getQuantile(0.99));
    dos.writeDouble(stat.getQuantile(0.999));
}