Example usage for java.io DataInputStream readLong

Introduction

In this page you can find the example usage for java.io DataInputStream readLong.

Prototype

public final long readLong() throws IOException 

Source Link

Document

See the general contract of the readLong method of DataInput.

Usage

From source file:net.timewalker.ffmq4.storage.data.impl.journal.JournalRecovery.java

private static DataBlockWriteOperation readDataBlockWriteOperation(DataInputStream in) throws IOException {
    long transactionId = in.readLong();
    long blockOffset = in.readLong();
    int len = in.readInt();
    byte[] dataBlock = new byte[len];
    in.readFully(dataBlock);/*from   ww w  .  jav  a2s  .  c  o  m*/

    return new DataBlockWriteOperation(transactionId, -1, blockOffset, dataBlock);
}

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From source file:net.timewalker.ffmq4.storage.data.impl.journal.JournalRecovery.java

private static MetaDataBlockWriteOperation readMetaDataBlockWriteOperation(DataInputStream in)
        throws IOException {
    long transactionId = in.readLong();
    long metaDataOffset = in.readLong();
    int len = in.readInt();
    byte[] metaData = new byte[len];
    in.readFully(metaData);/*from   w ww . j a v a  2 s.c om*/

    return new MetaDataBlockWriteOperation(transactionId, metaDataOffset, metaData);
}

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

public static Number getNumber(DataInputStream data) throws IOException {
    // Treating all ints,shorts, long as long.
    // Everything else as Double
    int flag = data.readByte();
    if (flag == 0)
        return data.readDouble();

    return data.readLong();
}

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From source file:tudarmstadt.lt.ABSentiment.featureExtractor.util.GloVeSpace.java

/**
 * Read a Vector - Array from binary file
 * @param ds input data stream/*from  w  w w .  j a v  a 2 s.  c o  m*/
 * @param vectorSize length of each word vector
 * @return an array of float containing the word vector representation
 */
private static float[] readFloatVector(DataInputStream ds, int vectorSize) throws IOException {
    float[] vector = new float[vectorSize];
    for (int j = 0; j < vectorSize; j++) {
        long l = ds.readLong();
        float d = (float) (Long.reverseBytes(l));
        vector[j] = d;
    }
    return vector;
}

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

/**
 * Convert bytes to longs and return long representation.
 * @param longVal/*from w  w w.ja  va2s .  c  o m*/
 * @return
 * @throws java.lang.Exception
 */
public static long convertBytesToLong(byte[] longVal) throws Exception {
    ByteArrayInputStream bais = new ByteArrayInputStream(longVal);
    DataInputStream dis = new DataInputStream(bais);

    try {
        return dis.readLong();
    } finally {
        dis.close();
    }
}

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From source file:org.apache.hadoop.hdfs.server.namenode.FSImagePreTransactionalStorageInspector.java

/**
 * Determine the checkpoint time of the specified StorageDirectory
 *
 * @param sd StorageDirectory to check//from ww  w . j a v a 2s .  c o m
 * @return If file exists and can be read, last checkpoint time. If not, 0L.
 * @throws IOException On errors processing file pointed to by sd
 */
static long readCheckpointTime(StorageDirectory sd) throws IOException {
    File timeFile = NNStorage.getStorageFile(sd, NameNodeFile.TIME);
    long timeStamp = 0L;
    if (timeFile.exists() && FileUtil.canRead(timeFile)) {
        DataInputStream in = new DataInputStream(new FileInputStream(timeFile));
        try {
            timeStamp = in.readLong();
            in.close();
            in = null;
        } finally {
            IOUtils.cleanup(LOG, in);
        }
    }
    return timeStamp;
}

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From source file:net.sf.keystore_explorer.crypto.x509.X509ExtensionSet.java

/**
 * Load X.509 extension set./*from ww w . j a  v a2s. co m*/
 *
 * @param is
 *            Stream to load from
 * @return X.509 extension set
 * @throws X509ExtensionSetLoadException
 *             If stream contents are not a valid X.509 extension set
 * @throws IOException
 *             If an I/O problem occurred
 */
public static X509ExtensionSet load(InputStream is) throws X509ExtensionSetLoadException, IOException {
    DataInputStream dis = null;

    try {
        dis = new DataInputStream(is);

        long magicNumber = dis.readLong();

        if (magicNumber != FILE_MAGIC_NUMBER) {
            throw new X509ExtensionSetLoadException(
                    res.getString("NoLoadX509ExtensionSet.BadMagicNumber.exception.message"));
        }

        int version = dis.readInt();

        if (version != FILE_VERSION) {
            throw new X509ExtensionSetLoadException(
                    res.getString("NoLoadX509ExtensionSet.WrongVersion.exception.message"));
        }

        X509ExtensionSet x509ExtensionSet = new X509ExtensionSet();

        x509ExtensionSet.criticalExtensions = loadExtensions(dis);
        x509ExtensionSet.nonCriticalExtensions = loadExtensions(dis);

        return x509ExtensionSet;
    } catch (EOFException ex) {
        throw new X509ExtensionSetLoadException(
                res.getString("NoLoadX509ExtensionSet.NotEnoughBytes.exception.message"));
    } finally {
        IOUtils.closeQuietly(dis);
    }
}

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

private static MetricDump.HistogramDump deserializeHistogram(DataInputStream dis) throws IOException {
    QueryScopeInfo info = deserializeMetricInfo(dis);
    String name = deserializeString(dis);
    long min = dis.readLong();
    long max = dis.readLong();
    double mean = dis.readDouble();
    double median = dis.readDouble();
    double stddev = dis.readDouble();
    double p75 = dis.readDouble();
    double p90 = dis.readDouble();
    double p95 = dis.readDouble();
    double p98 = dis.readDouble();
    double p99 = dis.readDouble();
    double p999 = dis.readDouble();
    return new MetricDump.HistogramDump(info, name, min, max, mean, median, stddev, p75, p90, p95, p98, p99,
            p999);/*from ww  w  .j  a  v  a 2  s.c om*/
}

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

private static MetricDump.CounterDump deserializeCounter(DataInputStream dis) throws IOException {
    QueryScopeInfo scope = deserializeMetricInfo(dis);
    String name = deserializeString(dis);
    return new MetricDump.CounterDump(scope, name, dis.readLong());
}

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From source file:org.eclipse.swt.snippets.Snippet319.java

static MyType restoreFromByteArray(byte[] bytes) {
    DataInputStream dataInStream = null;
    try {//  w  ww  . j av  a 2 s .  c om
        ByteArrayInputStream byteInStream = new ByteArrayInputStream(bytes);
        dataInStream = new DataInputStream(byteInStream);
        int size = dataInStream.readInt();
        byte[] name = new byte[size];
        dataInStream.read(name);
        MyType result = new MyType();
        result.name = new String(name);
        result.time = dataInStream.readLong();
        return result;
    } catch (IOException ex) {
        return null;
    } finally {
        if (dataInStream != null) {
            try {
                dataInStream.close();
            } catch (IOException e) {
            }
        }
    }
}

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