Example usage for java.io DataOutputStream writeInt

Introduction

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

Prototype

public final void writeInt(int v) throws IOException 

Source Link

Document

Writes an int to the underlying output stream as four bytes, high byte first.

Usage

From source file:org.squidy.nodes.iPhone.java

/**
 * @param image/*from  ww  w  .j  ava2  s .c  o m*/
 */
public void showButton(int x, int y, int actionType, BufferedImage image) {
    try {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ImageIO.write(image, "png", baos);

        byte[] bytes = baos.toByteArray();

        System.out.println("BYTES TO READ: " + bytes.length);

        for (Socket client : outputStreams.keySet()) {

            try {
                DataOutputStream outputStream = outputStreams.get(client);
                outputStream.writeInt(x);
                outputStream.writeInt(y);
                outputStream.writeInt(actionType);
                outputStream.writeInt(bytes.length);
                outputStream.write(bytes);
                outputStream.flush();
            } catch (SocketException e) {
                outputStreams.remove(client);
            }
        }
    } catch (IOException e) {
        e.printStackTrace();
        publishFailure(e);
    }
}

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From source file:com.linkedin.pinot.core.common.datatable.DataTableImplV2.java

private byte[] serializeDictionaryMap() throws IOException {
    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
    DataOutputStream dataOutputStream = new DataOutputStream(byteArrayOutputStream);

    dataOutputStream.writeInt(_dictionaryMap.size());
    for (Entry<String, Map<Integer, String>> dictionaryMapEntry : _dictionaryMap.entrySet()) {
        String columnName = dictionaryMapEntry.getKey();
        Map<Integer, String> dictionary = dictionaryMapEntry.getValue();
        byte[] bytes = columnName.getBytes(UTF_8);
        dataOutputStream.writeInt(bytes.length);
        dataOutputStream.write(bytes);/*w w w  .  j a v  a2 s .com*/
        dataOutputStream.writeInt(dictionary.size());

        for (Entry<Integer, String> dictionaryEntry : dictionary.entrySet()) {
            dataOutputStream.writeInt(dictionaryEntry.getKey());
            byte[] valueBytes = dictionaryEntry.getValue().getBytes(UTF_8);
            dataOutputStream.writeInt(valueBytes.length);
            dataOutputStream.write(valueBytes);
        }
    }

    return byteArrayOutputStream.toByteArray();
}

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From source file:org.apache.hadoop.hbase.security.HBaseSaslRpcClient.java

/**
 * Do client side SASL authentication with server via the given InputStream
 * and OutputStream// w w w.ja v a 2  s  .c  om
 * 
 * @param inS
 *          InputStream to use
 * @param outS
 *          OutputStream to use
 * @return true if connection is set up, or false if needs to switch 
 *             to simple Auth.
 * @throws IOException
 */
public boolean saslConnect(InputStream inS, OutputStream outS) throws IOException {
    DataInputStream inStream = new DataInputStream(new BufferedInputStream(inS));
    DataOutputStream outStream = new DataOutputStream(new BufferedOutputStream(outS));

    try {
        byte[] saslToken = new byte[0];
        if (saslClient.hasInitialResponse())
            saslToken = saslClient.evaluateChallenge(saslToken);
        if (saslToken != null) {
            outStream.writeInt(saslToken.length);
            outStream.write(saslToken, 0, saslToken.length);
            outStream.flush();
            if (LOG.isDebugEnabled())
                LOG.debug("Have sent token of size " + saslToken.length + " from initSASLContext.");
        }
        if (!saslClient.isComplete()) {
            readStatus(inStream);
            int len = inStream.readInt();
            if (len == SaslUtil.SWITCH_TO_SIMPLE_AUTH) {
                if (!fallbackAllowed) {
                    throw new IOException("Server asks us to fall back to SIMPLE auth, "
                            + "but this client is configured to only allow secure connections.");
                }
                if (LOG.isDebugEnabled()) {
                    LOG.debug("Server asks us to fall back to simple auth.");
                }
                saslClient.dispose();
                return false;
            }
            saslToken = new byte[len];
            if (LOG.isDebugEnabled())
                LOG.debug("Will read input token of size " + saslToken.length
                        + " for processing by initSASLContext");
            inStream.readFully(saslToken);
        }

        while (!saslClient.isComplete()) {
            saslToken = saslClient.evaluateChallenge(saslToken);
            if (saslToken != null) {
                if (LOG.isDebugEnabled())
                    LOG.debug("Will send token of size " + saslToken.length + " from initSASLContext.");
                outStream.writeInt(saslToken.length);
                outStream.write(saslToken, 0, saslToken.length);
                outStream.flush();
            }
            if (!saslClient.isComplete()) {
                readStatus(inStream);
                saslToken = new byte[inStream.readInt()];
                if (LOG.isDebugEnabled())
                    LOG.debug("Will read input token of size " + saslToken.length
                            + " for processing by initSASLContext");
                inStream.readFully(saslToken);
            }
        }
        if (LOG.isDebugEnabled()) {
            LOG.debug("SASL client context established. Negotiated QoP: "
                    + saslClient.getNegotiatedProperty(Sasl.QOP));
        }
        return true;
    } catch (IOException e) {
        try {
            saslClient.dispose();
        } catch (SaslException ignored) {
            // ignore further exceptions during cleanup
        }
        throw e;
    }
}

---

From source file:org.apache.hadoop.hdfs.tools.offlineImageViewer.TestOfflineImageViewer.java

private void changeLayoutVersion(File src, File dest, int newVersion) throws IOException {
    DataInputStream in = null;/*from   w  ww .  java 2  s.  com*/
    DataOutputStream out = null;

    try {
        in = new DataInputStream(new FileInputStream(src));
        out = new DataOutputStream(new FileOutputStream(dest));

        in.readInt();
        out.writeInt(newVersion);

        byte[] b = new byte[1024];
        while (in.read(b) > 0) {
            out.write(b);
        }
    } finally {
        if (in != null)
            in.close();
        if (out != null)
            out.close();
    }
}

---

From source file:org.outerrim.snippad.ui.swt.dnd.WikiTransfer.java

/**
 * Writes the given WikiWord to the output stream.
 *
 * @param word/*from w w  w  . ja  va  2  s  . c  o m*/
 *            The word to write
 * @param dataOut
 *            The stream to write to
 * @throws IOException
 */
private void writeWikiWord(final WikiWord word, final DataOutputStream dataOut) throws IOException {
    /*
     * Serialization format is as follows: (String) name of the word
     * (String) wiki text (int) number of child words (WikiWord) child 1 ...
     * repeat for each child
     */
    dataOut.writeUTF(word.getName());
    dataOut.writeUTF(word.getWikiText());
    List children = word.getWikiWords();
    LOG.debug("Word has " + children.size() + " children");
    dataOut.writeInt(children.size());
    for (int i = 0, size = children.size(); i < size; ++i) {
        writeWikiWord((WikiWord) children.get(i), dataOut);
    }
}

---

From source file:org.ozsoft.xantippe.filestore.FileStore.java

/**
 * Writes the index file.//from  w  w w.j a  v a2 s .  co m
 * 
 * @throws  IOException  if the file could not be written
 */
private void writeIndexFile() throws IOException {
    File file = new File(dataDir, INDEX_FILE);
    DataOutputStream dos = new DataOutputStream(new FileOutputStream(file));
    dos.writeInt(entries.size());
    for (FileEntry entry : entries.values()) {
        dos.writeInt(entry.getId());
        dos.writeInt(entry.getOffset());
        dos.writeInt(entry.getLength());
    }
    dos.close();
}

---

From source file:org.apache.hama.ipc.AsyncServer.java

/**
 * Setup response for the IPC Call.//from ww  w .j a  va2 s  .c o  m
 * 
 * @param response buffer to serialize the response into
 * @param call {@link Call} to which we are setting up the response
 * @param status {@link Status} of the IPC call
 * @param rv return value for the IPC Call, if the call was successful
 * @param errorClass error class, if the the call failed
 * @param error error message, if the call failed
 * @throws IOException
 */
private void setupResponse(ByteArrayOutputStream response, Call call, Status status, Writable rv,
        String errorClass, String error) throws IOException {
    response.reset();
    DataOutputStream out = new DataOutputStream(response);
    out.writeInt(call.id); // write call id
    out.writeInt(status.state); // write status

    if (status == Status.SUCCESS) {
        rv.write(out);
    } else {
        WritableUtils.writeString(out, errorClass);
        WritableUtils.writeString(out, error);
    }
    call.setResponse(ByteBuffer.wrap(response.toByteArray()));
    IOUtils.closeStream(out);
}

---

From source file:com.ning.arecibo.util.timeline.times.TimelineCoderImpl.java

private void writeTime(final int lastTime, final int newTime, final DataOutputStream dataStream)
        throws IOException {
    if (newTime > lastTime) {
        final int delta = (newTime - lastTime);
        if (delta <= TimelineOpcode.MAX_DELTA_TIME) {
            dataStream.writeByte(delta);
        } else {/*ww  w .  jav  a2s  . c om*/
            dataStream.writeByte(TimelineOpcode.FULL_TIME.getOpcodeIndex());
            dataStream.writeInt(newTime);
        }
    } else if (newTime == lastTime) {
        dataStream.writeByte(0);
    }
}

---

From source file:com.joey.software.MoorFLSI.RepeatImageTextReader.java

public void saveData(File f) throws IOException {
    DataOutputStream out = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(f)));

    out.writeInt(imageData.size());
    out.writeInt(wide);/*from www .  j a  v  a 2 s .  c  o  m*/
    out.writeInt(high);

    for (int i = 0; i < imageData.size(); i++) {
        System.out.println(i);
        out.writeLong(imageTime.get(i).getTime());
        for (int x = 0; x < wide; x++) {
            for (int y = 0; y < high; y++) {
                out.writeShort(imageData.get(i)[x][y]);
            }
        }
    }

    out.close();

}

---

From source file:com.linkedin.pinot.core.common.datatable.DataTableImplV2.java

@Nonnull
@Override//from  w w  w. j a va 2s  . c  o m
public byte[] toBytes() throws IOException {
    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
    DataOutputStream dataOutputStream = new DataOutputStream(byteArrayOutputStream);
    dataOutputStream.writeInt(VERSION);
    dataOutputStream.writeInt(_numRows);
    dataOutputStream.writeInt(_numColumns);
    int dataOffset = HEADER_SIZE;

    // Write dictionary.
    dataOutputStream.writeInt(dataOffset);
    byte[] dictionaryMapBytes = null;
    if (_dictionaryMap != null) {
        dictionaryMapBytes = serializeDictionaryMap();
        dataOutputStream.writeInt(dictionaryMapBytes.length);
        dataOffset += dictionaryMapBytes.length;
    } else {
        dataOutputStream.writeInt(0);
    }

    // Write metadata.
    dataOutputStream.writeInt(dataOffset);
    byte[] metadataBytes = serializeMetadata();
    dataOutputStream.writeInt(metadataBytes.length);
    dataOffset += metadataBytes.length;

    // Write data schema.
    dataOutputStream.writeInt(dataOffset);
    byte[] dataSchemaBytes = null;
    if (_dataSchema != null) {
        dataSchemaBytes = _dataSchema.toBytes();
        dataOutputStream.writeInt(dataSchemaBytes.length);
        dataOffset += dataSchemaBytes.length;
    } else {
        dataOutputStream.writeInt(0);
    }

    // Write fixed size data.
    dataOutputStream.writeInt(dataOffset);
    if (_fixedSizeDataBytes != null) {
        dataOutputStream.writeInt(_fixedSizeDataBytes.length);
        dataOffset += _fixedSizeDataBytes.length;
    } else {
        dataOutputStream.writeInt(0);
    }

    // Write variable size data.
    dataOutputStream.writeInt(dataOffset);
    if (_variableSizeDataBytes != null) {
        dataOutputStream.writeInt(_variableSizeDataBytes.length);
    } else {
        dataOutputStream.writeInt(0);
    }

    // Write actual data.
    if (dictionaryMapBytes != null) {
        dataOutputStream.write(dictionaryMapBytes);
    }
    dataOutputStream.write(metadataBytes);
    if (dataSchemaBytes != null) {
        dataOutputStream.write(dataSchemaBytes);
    }
    if (_fixedSizeDataBytes != null) {
        dataOutputStream.write(_fixedSizeDataBytes);
    }
    if (_variableSizeDataBytes != null) {
        dataOutputStream.write(_variableSizeDataBytes);
    }

    return byteArrayOutputStream.toByteArray();
}

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