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.ebay.nest.io.sede.lazy.LazyUtils.java

/**
 * Write out a binary representation of a PrimitiveObject to a byte stream.
 *
 * @param out ByteStream.Output, an unsynchronized version of ByteArrayOutputStream, used as a
 *            backing buffer for the the DataOutputStream
 * @param o the PrimitiveObject/*from  ww  w .ja  v  a2 s .co  m*/
 * @param oi the PrimitiveObjectInspector
 * @throws IOException on error during the write operation
 */
public static void writePrimitive(OutputStream out, Object o, PrimitiveObjectInspector oi) throws IOException {

    DataOutputStream dos = new DataOutputStream(out);

    try {
        switch (oi.getPrimitiveCategory()) {
        case BOOLEAN:
            boolean b = ((BooleanObjectInspector) oi).get(o);
            dos.writeBoolean(b);
            break;

        case BYTE:
            byte bt = ((ByteObjectInspector) oi).get(o);
            dos.writeByte(bt);
            break;

        case SHORT:
            short s = ((ShortObjectInspector) oi).get(o);
            dos.writeShort(s);
            break;

        case INT:
            int i = ((IntObjectInspector) oi).get(o);
            dos.writeInt(i);
            break;

        case LONG:
            long l = ((LongObjectInspector) oi).get(o);
            dos.writeLong(l);
            break;

        case FLOAT:
            float f = ((FloatObjectInspector) oi).get(o);
            dos.writeFloat(f);
            break;

        case DOUBLE:
            double d = ((DoubleObjectInspector) oi).get(o);
            dos.writeDouble(d);
            break;

        default:
            throw new RuntimeException("Hive internal error.");
        }
    } finally {
        // closing the underlying ByteStream should have no effect, the data should still be
        // accessible
        dos.close();
    }
}

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From source file:edu.umn.cs.spatialHadoop.core.RTreeGridRecordWriter.java

/**
 * Closes a cell by writing all outstanding objects and closing current file.
 * Then, the file is read again, an RTree is built on top of it and, finally,
 * the file is written again with the RTree built.
 *///  ww w .  jav a 2s  .  c  o  m
@Override
protected Path flushAllEntries(Path intermediateCellPath, OutputStream intermediateCellStream,
        Path finalCellPath) throws IOException {
    // Close stream to current intermediate file.
    intermediateCellStream.close();

    // Read all data of the written file in memory
    byte[] cellData = new byte[(int) new File(intermediateCellPath.toUri().getPath()).length()];
    InputStream cellIn = new FileInputStream(intermediateCellPath.toUri().getPath());
    cellIn.read(cellData);
    cellIn.close();

    // Build an RTree over the elements read from file
    // It should create a new stream
    DataOutputStream cellStream = (DataOutputStream) createFinalCellStream(finalCellPath);
    cellStream.writeLong(SpatialSite.RTreeFileMarker);
    int degree = 4096 / RTree.NodeSize;
    RTree.bulkLoadWrite(cellData, 0, cellData.length, degree, cellStream, stockObject.clone(), fastRTree);
    cellStream.close();
    cellData = null; // To allow GC to collect it

    return finalCellPath;
}

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From source file:com.csipsimple.backup.SipProfilesHelper.java

@Override
public void writeNewStateDescription(ParcelFileDescriptor newState) {
    long fileModified = databaseFile.lastModified();
    try {//  w w  w  .  j a  v  a 2 s .  co m
        FileOutputStream outstream = new FileOutputStream(newState.getFileDescriptor());
        DataOutputStream out = new DataOutputStream(outstream);
        out.writeLong(fileModified);
        out.close();
    } catch (IOException e) {
        Log.e(THIS_FILE, "Cannot manage final local backup state", e);
    }
}

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From source file:org.nuxeo.osgi.BundleIdGenerator.java

public synchronized void store(File file) throws IOException {
    DataOutputStream out = null;
    try {//from w  w w . j a  va 2s.co  m
        out = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(file)));
        out.writeLong(count);
        int size = ids.size();
        out.writeInt(size);
        for (Map.Entry<String, Long> entry : ids.entrySet()) {
            out.writeUTF(entry.getKey());
            out.writeLong(entry.getValue());
        }
    } finally {
        if (out != null) {
            out.close();
        }
    }
}

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From source file:org.apache.tez.examples.TopKDataGen.java

private UserPayload createPayload(long streamOutputFileSize, int extraColumns) throws IOException {
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    DataOutputStream dos = new DataOutputStream(bos);
    dos.writeLong(streamOutputFileSize);
    dos.writeInt(extraColumns);//from  ww  w  . ja  v  a2s.  c  o m
    dos.close();
    bos.close();
    ByteBuffer buffer = ByteBuffer.wrap(bos.toByteArray());
    return UserPayload.create(buffer);
}

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From source file:de.iritgo.aktario.jdbc.JDBCIDGenerator.java

/**
 * Write the object attributes to an output stream.
 *
 * @param stream The output stream./*w w w  . ja v a 2  s.co  m*/
 */
public void writeObject(OutputStream stream) throws IOException {
    DataOutputStream dataStream = new DataOutputStream(stream);

    dataStream.writeLong(id);
}

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From source file:com.ricemap.spateDB.core.RTreeGridRecordWriter.java

/**
 * Closes a cell by writing all outstanding objects and closing current file.
 * Then, the file is read again, an RTree is built on top of it and, finally,
 * the file is written again with the RTree built.
 *//*  w ww  . jav  a 2s.co  m*/
@Override
protected Path flushAllEntries(Path intermediateCellPath, OutputStream intermediateCellStream,
        Path finalCellPath) throws IOException {
    // Close stream to current intermediate file.
    intermediateCellStream.close();

    // Read all data of the written file in memory
    byte[] cellData = new byte[(int) new File(intermediateCellPath.toUri().getPath()).length()];
    InputStream cellIn = new FileInputStream(intermediateCellPath.toUri().getPath());
    cellIn.read(cellData);
    cellIn.close();

    // Build an RTree over the elements read from file
    RTree<S> rtree = new RTree<S>();
    rtree.setStockObject(stockObject);
    // It should create a new stream
    DataOutputStream cellStream = (DataOutputStream) createFinalCellStream(finalCellPath);
    cellStream.writeLong(SpatialSite.RTreeFileMarker);
    int degree = 4096 / RTree.NodeSize;
    rtree.bulkLoadWrite(cellData, 0, cellData.length, degree, cellStream, fastRTree, columnarStorage);
    cellStream.close();
    cellData = null; // To allow GC to collect it

    return finalCellPath;
}

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From source file:gridool.util.xfer.RecievedFileWriter.java

public final void handleRequest(@Nonnull final SocketChannel inChannel, @Nonnull final Socket socket)
        throws IOException {
    final StopWatch sw = new StopWatch();
    if (!inChannel.isBlocking()) {
        inChannel.configureBlocking(true);
    }/*from   w  w  w .  j  a  v a2  s  .c  o m*/

    InputStream in = socket.getInputStream();
    DataInputStream dis = new DataInputStream(in);

    String fname = IOUtils.readString(dis);
    String dirPath = IOUtils.readString(dis);
    long len = dis.readLong();
    boolean append = dis.readBoolean();
    boolean ackRequired = dis.readBoolean();
    boolean hasAdditionalHeader = dis.readBoolean();
    if (hasAdditionalHeader) {
        readAdditionalHeader(dis, fname, dirPath, len, append, ackRequired);
    }

    final File file;
    if (dirPath == null) {
        file = new File(baseDir, fname);
    } else {
        File dir = FileUtils.resolvePath(baseDir, dirPath);
        file = new File(dir, fname);
    }

    preFileAppend(file, append);
    final FileOutputStream dst = new FileOutputStream(file, append);
    final String fp = file.getAbsolutePath();
    final ReadWriteLock filelock = accquireLock(fp, locks);
    final FileChannel fileCh = dst.getChannel();
    final long startPos = file.length();
    try {
        NIOUtils.transferFully(inChannel, 0, len, fileCh); // REVIEWME really an atomic operation?
    } finally {
        IOUtils.closeQuietly(fileCh, dst);
        releaseLock(fp, filelock, locks);
        postFileAppend(file, startPos, len);
    }
    if (ackRequired) {
        OutputStream out = socket.getOutputStream();
        DataOutputStream dos = new DataOutputStream(out);
        dos.writeLong(len);
        postAck(file, startPos, len);
    }

    if (LOG.isDebugEnabled()) {
        SocketAddress remoteAddr = socket.getRemoteSocketAddress();
        LOG.debug("Received a " + (append ? "part of file '" : "file '") + file.getAbsolutePath() + "' of "
                + len + " bytes from " + remoteAddr + " in " + sw.toString());
    }
}

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From source file:xbird.util.xfer.RecievedFileWriter.java

public final void handleRequest(@Nonnull final SocketChannel inChannel, @Nonnull final Socket socket)
        throws IOException {
    final StopWatch sw = new StopWatch();
    if (!inChannel.isBlocking()) {
        inChannel.configureBlocking(true);
    }/*from w ww  . j  a  v a2  s  . com*/

    InputStream in = socket.getInputStream();
    DataInputStream dis = new DataInputStream(in);

    String fname = IOUtils.readString(dis);
    String dirPath = IOUtils.readString(dis);
    long len = dis.readLong();
    boolean append = dis.readBoolean();
    boolean ackRequired = dis.readBoolean();
    boolean hasAdditionalHeader = dis.readBoolean();
    if (hasAdditionalHeader) {
        readAdditionalHeader(dis, fname, dirPath, len, append, ackRequired);
    }

    final File file;
    if (dirPath == null) {
        file = new File(baseDir, fname);
    } else {
        File dir = FileUtils.resolvePath(baseDir, dirPath);
        file = new File(dir, fname);
    }

    preFileAppend(file, append);
    final FileOutputStream dst = new FileOutputStream(file, append);
    final String fp = file.getAbsolutePath();
    final ReadWriteLock filelock = accquireLock(fp, locks);
    final FileChannel fileCh = dst.getChannel();
    final long startPos = file.length();
    try {
        NIOUtils.transferFullyFrom(inChannel, 0, len, fileCh); // REVIEWME really an atomic operation?
    } finally {
        IOUtils.closeQuietly(fileCh, dst);
        releaseLock(fp, filelock, locks);
        postFileAppend(file, startPos, len);
    }
    if (ackRequired) {
        OutputStream out = socket.getOutputStream();
        DataOutputStream dos = new DataOutputStream(out);
        dos.writeLong(len);
        postAck(file, startPos, len);
    }

    if (LOG.isDebugEnabled()) {
        SocketAddress remoteAddr = socket.getRemoteSocketAddress();
        LOG.debug("Received a " + (append ? "part of file '" : "file '") + file.getAbsolutePath() + "' of "
                + len + " bytes from " + remoteAddr + " in " + sw.toString());
    }
}

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From source file:com.csipsimple.backup.SipSharedPreferencesHelper.java

@Override
public void writeNewStateDescription(ParcelFileDescriptor newState) {
    long fileModified = 0;
    if (prefsFiles != null) {
        prefsFiles.lastModified();/*  w ww .  ja  va2  s .  co  m*/
    }
    try {
        FileOutputStream outstream = new FileOutputStream(newState.getFileDescriptor());
        DataOutputStream out = new DataOutputStream(outstream);
        out.writeLong(fileModified);
        out.close();
    } catch (IOException e) {
        Log.e(THIS_FILE, "Cannot manage final local backup state", e);
    }
}

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