Example usage for java.nio ByteBuffer array

Introduction

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

Prototype

public final byte[] array() 

Source Link

Document

Returns the byte array which this buffer is based on, if there is one.

Usage

From source file:net.sf.jml.message.p2p.MsnP2PMessage.java

/**
 * @see MsnMimeMessage#toOutgoingMsg(MsnProtocol)
 *//* w w  w  .j  a v a  2s .co  m*/
@Override
public OutgoingMSG[] toOutgoingMsg(MsnProtocol protocol) {
    OutgoingMSG message = new OutgoingMSG(protocol);
    message.setMsgType(OutgoingMSG.TYPE_MSNC1);

    byte[] mimeMessageHeader = Charset.encodeAsByteArray(toString());

    byte[] body = bodyToMessage();
    if (body == null) {
        body = new byte[0];
    }

    ByteBuffer msg = ByteBuffer
            .allocate(mimeMessageHeader.length + BINARY_HEADER_LEN + body.length + BINARY_FOOTER_LEN);

    msg.put(mimeMessageHeader);
    msg.put(binaryHeader);
    msg.put(body);
    msg.put(binaryFooter);
    message.setMsg(msg.array());
    return new OutgoingMSG[] { message };
}

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From source file:com.github.ambry.utils.UtilsTest.java

@Test
public void testReadFileToByteBuffer() throws IOException {
    File file = File.createTempFile("test", "1");
    file.deleteOnExit();/*from  w  w w .jav  a2 s .  c o  m*/
    FileChannel fileChannel = Utils.openChannel(file, false);
    byte[] referenceBytes = new byte[20];
    new Random().nextBytes(referenceBytes);
    FileUtils.writeByteArrayToFile(file, referenceBytes);

    // fill up fresh byteBuffer
    ByteBuffer buffer = ByteBuffer.allocate(20);
    Utils.readFileToByteBuffer(fileChannel, 0, buffer);
    assertArrayEquals("Data mismatch", referenceBytes, buffer.array());

    // write to byteBuffer based on buffer remaining
    buffer.limit(10);
    buffer.position(0);
    assertEquals("buffer remaining should be 10", 10, buffer.remaining());
    Utils.readFileToByteBuffer(fileChannel, 10, buffer);
    assertEquals("buffer remaining should be 0", 0, buffer.remaining());
    for (int i = 0; i < 10; i++) {
        assertEquals("First 10 bytes in buffer should match last 10 bytes in file", buffer.array()[i],
                referenceBytes[i + 10]);
    }

    // byteBuffer.remaining() + starting offset > file size, exception is expected.
    buffer.clear();
    assertEquals("buffer remaining should be 20", 20, buffer.remaining());
    try {
        Utils.readFileToByteBuffer(fileChannel, 1, buffer);
        fail("Should fail");
    } catch (IOException e) {
    }

    // starting offset exceeds file size, exception is expected.
    buffer.clear();
    assertEquals("buffer remaining should be 20", 20, buffer.remaining());
    try {
        Utils.readFileToByteBuffer(fileChannel, 21, buffer);
        fail("Should fail");
    } catch (IOException e) {
    }
}

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From source file:com.owncloud.android.oc_framework.network.webdav.FileRequestEntity.java

@Override
public void writeRequest(final OutputStream out) throws IOException {
    //byte[] tmp = new byte[4096];
    ByteBuffer tmp = ByteBuffer.allocate(4096);
    int readResult = 0;

    // TODO(bprzybylski): each mem allocation can throw OutOfMemoryError we need to handle it
    //                    globally in some fashionable manner
    RandomAccessFile raf = new RandomAccessFile(mFile, "r");
    FileChannel channel = raf.getChannel();
    Iterator<OnDatatransferProgressListener> it = null;
    long transferred = 0;
    long size = mFile.length();
    if (size == 0)
        size = -1;/*from www  .  ja  v  a2 s.c  om*/
    try {
        while ((readResult = channel.read(tmp)) >= 0) {
            out.write(tmp.array(), 0, readResult);
            tmp.clear();
            transferred += readResult;
            synchronized (mDataTransferListeners) {
                it = mDataTransferListeners.iterator();
                while (it.hasNext()) {
                    it.next().onTransferProgress(readResult, transferred, size, mFile.getName());
                }
            }
        }

    } catch (IOException io) {
        Log.e("FileRequestException", io.getMessage());
        throw new RuntimeException(
                "Ugly solution to workaround the default policy of retries when the server falls while uploading ; temporal fix; really",
                io);

    } finally {
        channel.close();
        raf.close();
    }
}

---

From source file:eu.alefzero.webdav.FileRequestEntity.java

@Override
public void writeRequest(final OutputStream out) throws IOException {
    //byte[] tmp = new byte[4096];
    ByteBuffer tmp = ByteBuffer.allocate(4096);
    int readResult = 0;

    // TODO(bprzybylski): each mem allocation can throw OutOfMemoryError we need to handle it
    //                    globally in some fashionable manner
    RandomAccessFile raf = new RandomAccessFile(mFile, "r");
    FileChannel channel = raf.getChannel();
    Iterator<OnDatatransferProgressListener> it = null;
    long transferred = 0;
    long size = mFile.length();
    if (size == 0)
        size = -1;/*from w w  w.j  a  va2 s . c o  m*/
    try {
        while ((readResult = channel.read(tmp)) >= 0) {
            out.write(tmp.array(), 0, readResult);
            tmp.clear();
            transferred += readResult;
            synchronized (mDataTransferListeners) {
                it = mDataTransferListeners.iterator();
                while (it.hasNext()) {
                    it.next().onTransferProgress(readResult, transferred, size, mFile.getName());
                }
            }
        }

    } catch (IOException io) {
        Log_OC.e("FileRequestException", io.getMessage());
        throw new RuntimeException(
                "Ugly solution to workaround the default policy of retries when the server falls while uploading ; temporal fix; really",
                io);

    } finally {
        channel.close();
        raf.close();
    }
}

---

From source file:edu.cmu.cylab.starslinger.transaction.WebEngine.java

/**
 * get a file, based on the retrieval id from the server
 * // w w w  .  j av a 2s  .  co  m
 * @throws MessageNotFoundException
 */
public byte[] getFile(byte[] msgHashBytes) throws ExchangeException, MessageNotFoundException {

    ByteBuffer msg = ByteBuffer.allocate(mVersionLen //
            + 4 + msgHashBytes.length //
    );
    msg.putInt(mVersion);
    msg.putInt(msgHashBytes.length);
    msg.put(msgHashBytes);

    byte[] resp = doPost(mUrlPrefix + mHost + "/getFile" + mUrlSuffix, msg.array());

    resp = handleResponseExceptions(resp, 0);

    return resp;
}

---

From source file:edu.cmu.cylab.starslinger.transaction.WebEngine.java

/**
 * get a message meta-data, based on the retrieval id from the server
 * /*from ww  w  . j  a v  a2s.c om*/
 * @throws MessageNotFoundException
 */
public byte[] getMessage(byte[] msgHashBytes) throws ExchangeException, MessageNotFoundException {

    ByteBuffer msg = ByteBuffer.allocate(mVersionLen //
            + 4 + msgHashBytes.length //
    );
    msg.putInt(mVersion);
    msg.putInt(msgHashBytes.length);
    msg.put(msgHashBytes);

    byte[] resp = doPost(mUrlPrefix + mHost + "/getMessage" + mUrlSuffix, msg.array());

    resp = handleResponseExceptions(resp, 0);

    return resp;
}

---

From source file:com.cerema.cloud2.lib.common.network.FileRequestEntity.java

@Override
public void writeRequest(final OutputStream out) throws IOException {
    //byte[] tmp = new byte[4096];
    ByteBuffer tmp = ByteBuffer.allocate(4096);
    int readResult = 0;

    // TODO(bprzybylski): each mem allocation can throw OutOfMemoryError we need to handle it
    //                    globally in some fashionable manner
    RandomAccessFile raf = new RandomAccessFile(mFile, "r");
    FileChannel channel = raf.getChannel();
    Iterator<OnDatatransferProgressListener> it = null;
    long transferred = 0;
    long size = mFile.length();
    if (size == 0)
        size = -1;//from  ww  w.  j  av  a 2  s  . co m
    try {
        while ((readResult = channel.read(tmp)) >= 0) {
            out.write(tmp.array(), 0, readResult);
            tmp.clear();
            transferred += readResult;
            synchronized (mDataTransferListeners) {
                it = mDataTransferListeners.iterator();
                while (it.hasNext()) {
                    it.next().onTransferProgress(readResult, transferred, size, mFile.getAbsolutePath());
                }
            }
        }

    } catch (IOException io) {
        Log_OC.e("FileRequestException", io.getMessage());
        throw new RuntimeException(
                "Ugly solution to workaround the default policy of retries when the server falls while uploading ; temporal fix; really",
                io);

    } finally {
        channel.close();
        raf.close();
    }
}

---

From source file:com.github.ambry.utils.UtilsTest.java

@Test
public void testReadBuffers() throws IOException {
    byte[] buf = new byte[40004];
    new Random().nextBytes(buf);
    ByteBuffer inputBuf = ByteBuffer.wrap(buf);
    inputBuf.putInt(0, 40000);/*from  w  w  w. jav a 2  s.  c  om*/
    ByteBuffer outputBuf = Utils.readIntBuffer(new DataInputStream(new ByteBufferInputStream(inputBuf)));
    for (int i = 0; i < 40000; i++) {
        Assert.assertEquals(buf[i + 4], outputBuf.array()[i]);
    }
    // 0 size
    inputBuf.rewind();
    inputBuf.putInt(0, 0);
    outputBuf = Utils.readIntBuffer(new DataInputStream(new ByteBufferInputStream(inputBuf)));
    Assert.assertEquals("Output should be of length 0", 0, outputBuf.array().length);
    // negative size
    inputBuf.rewind();
    inputBuf.putInt(0, -1);
    try {
        Utils.readIntBuffer(new DataInputStream(new ByteBufferInputStream(inputBuf)));
        Assert.fail("Should have encountered exception with negative length.");
    } catch (IllegalArgumentException e) {
    }

    buf = new byte[10];
    new Random().nextBytes(buf);
    inputBuf = ByteBuffer.wrap(buf);
    inputBuf.putShort(0, (short) 8);
    outputBuf = Utils.readShortBuffer(new DataInputStream(new ByteBufferInputStream(inputBuf)));
    for (int i = 0; i < 8; i++) {
        Assert.assertEquals(buf[i + 2], outputBuf.array()[i]);
    }
    // 0 size
    inputBuf.rewind();
    inputBuf.putShort(0, (short) 0);
    outputBuf = Utils.readShortBuffer(new DataInputStream(new ByteBufferInputStream(inputBuf)));
    Assert.assertEquals("Output should be of length 0", 0, outputBuf.array().length);
    // negative size
    inputBuf.rewind();
    inputBuf.putShort(0, (short) -1);
    try {
        Utils.readShortBuffer(new DataInputStream(new ByteBufferInputStream(inputBuf)));
        Assert.fail("Should have encountered exception with negative length.");
    } catch (IllegalArgumentException e) {
    }
}

---

From source file:org.jhk.pulsing.web.aspect.UserDaoAspect.java

@AfterReturning(pointcut = "execution(org.jhk.pulsing.web.common.Result+ org.jhk.pulsing.web.dao.*.UserDao.*(..))", returning = "result")
public void patchUser(JoinPoint joinPoint, Result<User> result) {
    if (result.getCode() != SUCCESS) {
        return;//from  w  w w.  java  2  s  .c o m
    }

    User user = result.getData();
    user.setPassword(""); //blank out password
    Picture picture = user.getPicture();

    _LOGGER.debug("UserDaoAspect.setPictureUrl" + user);

    if (picture != null && picture.getName() != null) {

        ByteBuffer pBuffer = picture.getContent();
        String path = applicationContext.getServletContext().getRealPath("/resources/img");
        File parent = Paths.get(path).toFile();
        if (!parent.exists()) {
            parent.mkdirs();
        }

        String pFileName = user.getId().getId() + "_" + pBuffer.hashCode() + "_" + picture.getName();
        File pFile = Paths.get(path, pFileName).toFile();

        if (!pFile.exists()) {
            try (OutputStream fStream = Files.newOutputStream(pFile.toPath(), StandardOpenOption.CREATE_NEW,
                    StandardOpenOption.WRITE)) {
                fStream.write(pBuffer.array());
            } catch (IOException iException) {
                iException.printStackTrace();
                pFile = null;
            }
        }

        if (pFile != null) {
            _LOGGER.debug("UserDaoAspect Setting picture url - " + _RESOURCE_PREFIX + pFile.getName());
            picture.setUrl(_RESOURCE_PREFIX + pFile.getName());
        }
    }

}

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