Example usage for java.nio ByteBuffer get

Introduction

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

Prototype

public abstract byte get(int index);

Source Link

Document

Returns the byte at the specified index and does not change the position.

Usage

From source file:com.cellngine.crypto.RSACipher.java

private BigInteger[] getKeyData(final byte[] fromBytes) {
    final ByteBuffer buffer = ByteBuffer.wrap(fromBytes);

    final int modulusLength = buffer.getInt();
    final byte[] modulusBuffer = new byte[modulusLength];
    buffer.get(modulusBuffer);
    final BigInteger modulus = new BigInteger(modulusBuffer);

    final int exponentLength = buffer.getInt();
    final byte[] exponentBuffer = new byte[exponentLength];
    buffer.get(exponentBuffer);//from www  . ja v a2s. c o  m
    final BigInteger exponent = new BigInteger(exponentBuffer);

    return new BigInteger[] { modulus, exponent };
}

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From source file:com.cloudera.sqoop.TestParquetImport.java

private void runParquetImportTest(String codec) throws IOException {
    String[] types = { "BIT", "INTEGER", "BIGINT", "REAL", "DOUBLE", "VARCHAR(6)", "VARBINARY(2)", };
    String[] vals = { "true", "100", "200", "1.0", "2.0", "'s'", "'0102'", };
    createTableWithColTypes(types, vals);

    String[] extraArgs = { "--compression-codec", codec };
    runImport(getOutputArgv(true, extraArgs));

    assertEquals(CompressionType.forName(codec), getCompressionType());

    Schema schema = getSchema();//w  w  w . j  a v  a  2  s . c  om
    assertEquals(Type.RECORD, schema.getType());
    List<Field> fields = schema.getFields();
    assertEquals(types.length, fields.size());
    checkField(fields.get(0), "DATA_COL0", Type.BOOLEAN);
    checkField(fields.get(1), "DATA_COL1", Type.INT);
    checkField(fields.get(2), "DATA_COL2", Type.LONG);
    checkField(fields.get(3), "DATA_COL3", Type.FLOAT);
    checkField(fields.get(4), "DATA_COL4", Type.DOUBLE);
    checkField(fields.get(5), "DATA_COL5", Type.STRING);
    checkField(fields.get(6), "DATA_COL6", Type.BYTES);

    DatasetReader<GenericRecord> reader = getReader();
    try {
        GenericRecord record1 = reader.next();
        assertNotNull(record1);
        assertEquals("DATA_COL0", true, record1.get("DATA_COL0"));
        assertEquals("DATA_COL1", 100, record1.get("DATA_COL1"));
        assertEquals("DATA_COL2", 200L, record1.get("DATA_COL2"));
        assertEquals("DATA_COL3", 1.0f, record1.get("DATA_COL3"));
        assertEquals("DATA_COL4", 2.0, record1.get("DATA_COL4"));
        assertEquals("DATA_COL5", "s", record1.get("DATA_COL5"));
        Object object = record1.get("DATA_COL6");
        assertTrue(object instanceof ByteBuffer);
        ByteBuffer b = ((ByteBuffer) object);
        assertEquals((byte) 1, b.get(0));
        assertEquals((byte) 2, b.get(1));
        assertFalse(reader.hasNext());
    } finally {
        reader.close();
    }
}

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From source file:net.socket.nio.TimeClientHandle.java

private void handleInput(SelectionKey key) throws IOException {

    if (key.isValid()) {
        // ??//from w ww .  j a  v a  2 s . co m
        SocketChannel sc = (SocketChannel) key.channel();
        if (key.isConnectable()) {
            if (sc.finishConnect()) {
                sc.register(selector, SelectionKey.OP_READ);
                doWrite(sc);
            } else {
                System.exit(1);// 
            }
        }
        if (key.isReadable()) {
            ByteBuffer readBuffer = ByteBuffer.allocate(1024);
            int readBytes = sc.read(readBuffer);
            if (readBytes > 0) {
                readBuffer.flip();
                byte[] bytes = new byte[readBuffer.remaining()];
                readBuffer.get(bytes);
                String body = new String(bytes, "UTF-8");
                System.out.println("Now is : " + body);
                this.stop = true;
            } else if (readBytes < 0) {
                // 
                key.cancel();
                sc.close();
            } else {
                ; // 0
            }
        }
    }

}

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From source file:com.github.cambierr.lorawanpacket.semtech.PullResp.java

public PullResp(byte[] _randoms, ByteBuffer _raw) throws MalformedPacketException {
    super(_randoms, PacketType.PULL_RESP);
    _raw.order(ByteOrder.LITTLE_ENDIAN);

    if (_raw.remaining() < 1) {
        throw new MalformedPacketException("too short");
    }/*from   w w  w  .  j av a2  s .co m*/

    byte[] json = new byte[_raw.remaining()];
    _raw.get(json);
    JSONObject jo;

    try {
        jo = new JSONObject(new String(json));
    } catch (JSONException ex) {
        throw new MalformedPacketException("malformed json");
    }

    txpks = new ArrayList<>();

    if (!jo.has("txpk")) {
        throw new MalformedPacketException("missing json (txpk)");
    }

    if (!jo.get("txpk").getClass().equals(JSONArray.class)) {
        throw new MalformedPacketException("malformed json (txpk)");
    }
    JSONArray rxpk = jo.getJSONArray("txpk");

    for (int i = 0; i < rxpk.length(); i++) {
        txpks.add(new Txpk(rxpk.getJSONObject(i)));
    }
}

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From source file:MainActivity.java

protected void takePicture(View view) {
    if (null == mCameraDevice) {
        return;//from w  ww  .  ja v  a 2s  .  c o  m
    }
    CameraManager manager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
    try {
        CameraCharacteristics characteristics = manager.getCameraCharacteristics(mCameraDevice.getId());
        StreamConfigurationMap configurationMap = characteristics
                .get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
        if (configurationMap == null)
            return;
        Size largest = Collections.max(Arrays.asList(configurationMap.getOutputSizes(ImageFormat.JPEG)),
                new CompareSizesByArea());
        ImageReader reader = ImageReader.newInstance(largest.getWidth(), largest.getHeight(), ImageFormat.JPEG,
                1);
        List<Surface> outputSurfaces = new ArrayList<Surface>(2);
        outputSurfaces.add(reader.getSurface());
        outputSurfaces.add(new Surface(mTextureView.getSurfaceTexture()));
        final CaptureRequest.Builder captureBuilder = mCameraDevice
                .createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE);
        captureBuilder.addTarget(reader.getSurface());
        captureBuilder.set(CaptureRequest.CONTROL_MODE, CameraMetadata.CONTROL_MODE_AUTO);
        ImageReader.OnImageAvailableListener readerListener = new ImageReader.OnImageAvailableListener() {
            @Override
            public void onImageAvailable(ImageReader reader) {
                Image image = null;
                try {
                    image = reader.acquireLatestImage();
                    ByteBuffer buffer = image.getPlanes()[0].getBuffer();
                    byte[] bytes = new byte[buffer.capacity()];
                    buffer.get(bytes);
                    OutputStream output = new FileOutputStream(getPictureFile());
                    output.write(bytes);
                    output.close();
                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                } finally {
                    if (image != null) {
                        image.close();
                    }
                }
            }
        };
        HandlerThread thread = new HandlerThread("CameraPicture");
        thread.start();
        final Handler backgroudHandler = new Handler(thread.getLooper());
        reader.setOnImageAvailableListener(readerListener, backgroudHandler);
        final CameraCaptureSession.CaptureCallback captureCallback = new CameraCaptureSession.CaptureCallback() {
            @Override
            public void onCaptureCompleted(CameraCaptureSession session, CaptureRequest request,
                    TotalCaptureResult result) {
                super.onCaptureCompleted(session, request, result);
                Toast.makeText(MainActivity.this, "Picture Saved", Toast.LENGTH_SHORT).show();
                startPreview(session);
            }
        };
        mCameraDevice.createCaptureSession(outputSurfaces, new CameraCaptureSession.StateCallback() {
            @Override
            public void onConfigured(CameraCaptureSession session) {
                try {
                    session.capture(captureBuilder.build(), captureCallback, backgroudHandler);
                } catch (CameraAccessException e) {
                    e.printStackTrace();
                }
            }

            @Override
            public void onConfigureFailed(CameraCaptureSession session) {
            }
        }, backgroudHandler);
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }
}

---

From source file:io.gomint.server.network.packet.PacketLogin.java

@Override
public void deserialize(PacketBuffer buffer) {
    this.protocol = buffer.readInt();

    // Decompress inner data (i don't know why you compress inside of a Batched Packet but hey)
    byte[] compressed = new byte[buffer.readInt()];
    buffer.readBytes(compressed);/*from  w  w  w. ja v a  2 s .  co  m*/

    Inflater inflater = new Inflater();
    inflater.setInput(compressed);

    ByteArrayOutputStream bout = new ByteArrayOutputStream();

    try {
        byte[] comBuffer = new byte[1024];
        while (!inflater.finished()) {
            int read = inflater.inflate(comBuffer);
            bout.write(comBuffer, 0, read);
        }
    } catch (DataFormatException e) {
        System.out.println("Failed to decompress batch packet" + e);
        return;
    }

    // More data please
    ByteBuffer byteBuffer = ByteBuffer.wrap(bout.toByteArray());
    byteBuffer.order(ByteOrder.LITTLE_ENDIAN);
    byte[] stringBuffer = new byte[byteBuffer.getInt()];
    byteBuffer.get(stringBuffer);

    // Decode the json stuff
    try {
        JSONObject jsonObject = (JSONObject) new JSONParser().parse(new String(stringBuffer));
        JSONArray chainArray = (JSONArray) jsonObject.get("chain");
        if (chainArray != null) {
            this.validationKey = parseBae64JSON((String) chainArray.get(chainArray.size() - 1)); // First key in chain is last response in chain #brainfuck :D
            for (Object chainObj : chainArray) {
                decodeBase64JSON((String) chainObj);
            }
        }
    } catch (ParseException e) {
        e.printStackTrace();
    }

    // Skin comes next
    this.skin = new byte[byteBuffer.getInt()];
    byteBuffer.get(this.skin);
}

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From source file:com.github.cambierr.lorawanpacket.semtech.PushData.java

public PushData(byte[] _randoms, ByteBuffer _raw) throws MalformedPacketException {
    super(_randoms, PacketType.PUSH_DATA);
    _raw.order(ByteOrder.LITTLE_ENDIAN);

    if (_raw.remaining() < 8) {
        throw new MalformedPacketException("too short");
    }//from   w ww . j  a va 2s  .  c om

    gatewayEui = new byte[8];
    _raw.get(gatewayEui);

    byte[] json = new byte[_raw.remaining()];
    _raw.get(json);
    JSONObject jo;

    try {
        jo = new JSONObject(new String(json));
    } catch (JSONException ex) {
        throw new MalformedPacketException("malformed json");
    }

    stats = new ArrayList<>();
    rxpks = new ArrayList<>();

    if (jo.has("rxpk")) {
        if (!jo.get("rxpk").getClass().equals(JSONArray.class)) {
            throw new MalformedPacketException("malformed json (rxpk)");
        }
        JSONArray rxpk = jo.getJSONArray("rxpk");

        for (int i = 0; i < rxpk.length(); i++) {
            rxpks.add(new Rxpk(rxpk.getJSONObject(i)));
        }
    }

    if (jo.has("stat")) {
        if (!jo.get("stat").getClass().equals(JSONArray.class)) {
            throw new MalformedPacketException("malformed json (stat)");
        }
        JSONArray stat = jo.getJSONArray("stat");

        for (int i = 0; i < stat.length(); i++) {
            stats.add(new Stat(stat.getJSONObject(i)));
        }
    }

}

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From source file:com.esri.geoevent.solutions.adapter.geomessage.DefenseInboundAdapter.java

@Override
public void receive(ByteBuffer buffer, String channelId) {
    try {/*  w  w  w  . j av a  2  s . c o  m*/
        int remaining = buffer.remaining();
        if (remaining <= 0)
            return;
        if (bytes == null) {
            bytes = new byte[remaining];
            buffer.get(bytes);
        } else {
            byte[] temp = new byte[bytes.length + remaining];
            System.arraycopy(bytes, 0, temp, 0, bytes.length);
            buffer.get(temp, bytes.length, remaining);
            bytes = temp;
        }
        try {
            saxParser.parse(new ByteArrayInputStream(bytes), messageParser);
            bytes = null;
            commit();
        } catch (SAXException e) {
            LOG.error("SAXException while trying to parse the incoming xml.", e);

            // TODO : figure out a way to recover the lost bytes. for now, just
            // throwing them away.
            if (tryingToRecoverPartialMessages) {
                queue.clear();
            } else {
                bytes = null;
                commit();
            }
        }
    } catch (IOException e) {
        LOG.error("IOException while trying to route data from the byte buffer to the pipe.", e);
    }
}

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From source file:com.linkedin.databus.core.DbusEventPart.java

@Override
public String toString() {
    StringBuilder sb = new StringBuilder(64);
    sb.append("Length=").append(getDataLength()).append(";SchemaVersion=").append(getSchemaVersion())
            .append(";SchemaId=").append("0x").append(Hex.encodeHexString(getSchemaDigest()));

    ByteBuffer dataBB = getData();
    if (dataBB.remaining() > MAX_DATA_BYTES_PRINTED) {
        dataBB.limit(MAX_DATA_BYTES_PRINTED);
    }//www.j a va 2  s.c  o  m
    byte[] data = new byte[dataBB.remaining()];
    dataBB.get(data);
    sb.append(";Value=").append("0x").append(Hex.encodeHexString(data));
    return sb.toString();
}

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From source file:tanks10.SendAndReceive.java

/**
 * Umieszczenie bufora w kolejce do wysania
 *//*  w ww  .  ja  va  2s  .  c  om*/
public void addToSendBuffers(ByteBuffer in) {
    if (closed) {
        return;
    }
    if (kill) {
        closeSession();
    } else {

        // blokada tylko dotyczy operowania na wskanikach bufora
        synchronized (sendBuffers) {
            final TextMessage message;
            try {
                byte[] arrayContent = new byte[in.limit()];
                in.get(arrayContent);
                String content = new String(arrayContent, "UTF-8");
                message = new TextMessage(content);
            } catch (UnsupportedEncodingException e) {
                throw new RuntimeException(e);
            }

            try {
                session.sendMessage(message);
            } catch (Exception e) {
                LOG.log(Level.WARNING, "send message failed to " + session.getRemoteAddress().toString(), e);
                closeSession();
            }
        }
    }

}

---

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