Example usage for java.nio ByteBuffer clear

List of usage examples for java.nio ByteBuffer clear

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Introduction

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

Prototype

public final Buffer clear()

Source Link

Document

Clears this buffer.

Usage

From source file:com.github.neoio.net.message.staging.file.TestFileMessageStaging.java

@Test
public void test_tempWrite() {
    ByteBuffer buffer = ByteBuffer.allocate(1024);

    buffer.put("Hello World".getBytes());
    buffer.flip();/* ww  w .j ava  2s. c  o m*/
    staging.writeTempWriteBytes(buffer);
    Assert.assertTrue(staging.hasTempWriteBytes());

    buffer.clear();
    staging.readTempWriteBytes(buffer);
    Assert.assertEquals("Hello World",
            new String(ArrayUtils.subarray(buffer.array(), 0, "Hello World".getBytes().length)));
    staging.resetTempWriteBytes();

    Assert.assertFalse(staging.hasTempWriteBytes());
}

From source file:de.undercouch.bson4jackson.io.StaticBuffers.java

/**
 * @see #charBuffer(Key, int)/*  w  w  w . j  a v  a2 s  .  co  m*/
 */
public ByteBuffer byteBuffer(Key key, int minSize) {
    minSize = Math.max(minSize, GLOBAL_MIN_SIZE);

    ByteBuffer r = _byteBuffers[key.ordinal()];
    if (r == null || r.capacity() < minSize) {
        r = ByteBuffer.allocate(minSize);
    } else {
        _byteBuffers[key.ordinal()] = null;
        r.clear();
    }
    return r;
}

From source file:org.cloudata.core.commitlog.pipe.Bulk.java

public void clear() {
    ByteBuffer buf = bufferList.remove(bufferList.size() - 1);
    buf.clear();

    if (bufferList.isEmpty() == false) {
        LOG.debug("bulk [" + this + "] clear, " + bufferList.size() + " is returned");
        BufferPool.singleton().returnBuffer(bufferList.toArray(new ByteBuffer[0]));
    }/*  www.  j  a v  a  2 s.  co  m*/

    bufferList.clear();
    bufferList.add(buf);

    currentReadBufIndex = 0;
    currentWriteBufIndex = 0;
    writtenPos = 0;
    readingHeaderDone = false;
    headerAndPayloadSize = 0;
    totalNumRead = 0;
    txId = null;
    seq = -1;
    totalNumWritten = 0;
    readBytesLength = 4;
    dirNameBytes = null;
}

From source file:siddur.solidtrust.fault.FaultController.java

@RequestMapping(value = "/upload", method = RequestMethod.POST)
public String handleFormUpload(@RequestParam("file") MultipartFile file, @RequestParam("version") int v,
        Model model, HttpSession session) throws Exception {

    IFaultPersister persister = getPersister(v);

    //upload/*from   w ww  . j  a va 2  s . c  o  m*/
    log4j.info("Start uploading file: " + file.getName() + " with size: " + file.getSize());
    File temp = File.createTempFile("data", ".csv");
    log4j.info("Will save to " + temp.getAbsolutePath());

    InputStream in = null;
    FileOutputStream fout = null;

    try {
        fout = new FileOutputStream(temp);
        FileChannel fcout = fout.getChannel();

        in = file.getInputStream();
        ReadableByteChannel cin = Channels.newChannel(in);

        ByteBuffer buf = ByteBuffer.allocate(1024 * 8);
        while (true) {
            buf.clear();

            int r = cin.read(buf);

            if (r == -1) {
                break;
            }

            buf.flip();
            fcout.write(buf);
        }
    } finally {
        if (in != null) {
            in.close();
        }
        if (fout != null) {
            fout.close();
        }
    }
    log4j.info("Uploading complete");

    //fields
    BufferedReader br = null;
    int[] orders;
    try {
        in = new FileInputStream(temp);
        br = new BufferedReader(new InputStreamReader(in));

        //first line for fields
        String firstLine = br.readLine();
        orders = persister.validateTitle(firstLine);

        //persist
        persister.parseAndSave(br, orders, persister);
    } finally {
        if (br != null) {
            br.close();
        }
    }

    return "redirect:upload.html";
}

From source file:eu.stratosphere.arraymodel.io.StringInputFormat.java

public boolean readRecord(Value[] target, byte[] bytes, int offset, int numBytes) {
    StringValue str = this.theString;

    if (this.ascii) {
        str.setValueAscii(bytes, offset, numBytes);
    } else {// www  . j  a va  2s  .co  m
        ByteBuffer byteWrapper = this.byteWrapper;
        if (bytes != byteWrapper.array()) {
            byteWrapper = ByteBuffer.wrap(bytes, 0, bytes.length);
            this.byteWrapper = byteWrapper;
        }
        byteWrapper.clear();
        byteWrapper.position(offset);
        byteWrapper.limit(offset + numBytes);

        try {
            CharBuffer result = this.decoder.decode(byteWrapper);
            str.setValue(result);
        } catch (CharacterCodingException e) {
            byte[] copy = new byte[numBytes];
            System.arraycopy(bytes, offset, copy, 0, numBytes);
            LOG.warn("Line could not be encoded: " + Arrays.toString(copy), e);
            return false;
        }
    }

    target[0] = str;
    return true;
}

From source file:siddur.solidtrust.newprice2.Newprice2Controller.java

@RequestMapping(value = "/upload", method = RequestMethod.POST)
public String handleFormUpload(@RequestParam("file") MultipartFile file, Model model, HttpSession session)
        throws IOException {

    //upload// w  w  w . j  a  v a 2s . c  o m
    log4j.info("Start uploading file: " + file.getName() + " with size: " + file.getSize());
    File temp = File.createTempFile("data", ".csv");
    log4j.info("Will save to " + temp.getAbsolutePath());

    InputStream in = null;
    FileOutputStream fout = null;

    try {
        fout = new FileOutputStream(temp);
        FileChannel fcout = fout.getChannel();

        in = file.getInputStream();
        ReadableByteChannel cin = Channels.newChannel(in);

        ByteBuffer buf = ByteBuffer.allocate(1024 * 8);
        while (true) {
            buf.clear();

            int r = cin.read(buf);

            if (r == -1) {
                break;
            }

            buf.flip();
            fcout.write(buf);
        }
    } finally {
        if (in != null) {
            in.close();
        }
        if (fout != null) {
            fout.close();
        }
    }
    FileStatus fs = new FileStatus();
    fs.setFile(temp);
    log4j.info("Uploading complete");

    //fields
    BufferedReader br = null;
    int[] orders;
    String[] fields;
    try {
        in = new FileInputStream(temp);
        br = new BufferedReader(new InputStreamReader(in));

        //first line for fields
        String firstLine = br.readLine();
        fields = StringUtils.split(firstLine, ";");
        ;
        orders = new int[fields.length];
        for (int i = 0; i < orders.length; i++) {
            orders[i] = ArrayUtils.indexOf(FIELDS, fields[i].trim());
        }

        //count
        while (br.readLine() != null) {
            fs.next();
        }
    } finally {
        if (br != null) {
            br.close();
        }
    }

    fs.flip();
    log4j.info("Total rows: " + fs.getTotalRow());

    //persist
    carService.saveCars(fs, orders, carService);
    return "redirect:/v2/upload.html";
}

From source file:eu.stratosphere.pact.array.io.StringInputFormat.java

public boolean readRecord(Value[] target, byte[] bytes, int offset, int numBytes) {
    PactString str = this.theString;

    if (this.ascii) {
        str.setValueAscii(bytes, offset, numBytes);
    } else {//from w  w w  .  j  a v a 2s  .  c o  m
        ByteBuffer byteWrapper = this.byteWrapper;
        if (bytes != byteWrapper.array()) {
            byteWrapper = ByteBuffer.wrap(bytes, 0, bytes.length);
            this.byteWrapper = byteWrapper;
        }
        byteWrapper.clear();
        byteWrapper.position(offset);
        byteWrapper.limit(offset + numBytes);

        try {
            CharBuffer result = this.decoder.decode(byteWrapper);
            str.setValue(result);
        } catch (CharacterCodingException e) {
            byte[] copy = new byte[numBytes];
            System.arraycopy(bytes, offset, copy, 0, numBytes);
            LOG.warn("Line could not be encoded: " + Arrays.toString(copy), e);
            return false;
        }
    }

    target[0] = str;
    return true;
}

From source file:SelfClassLoader.java

private byte[] loadClassBytes(String className) throws ClassNotFoundException {
    try {//from w  w  w  .jav  a  2s .  c om
        String classFile = getClassFile(className);
        FileInputStream fis = new FileInputStream(classFile);
        FileChannel fileC = fis.getChannel();
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        WritableByteChannel outC = Channels.newChannel(baos);
        ByteBuffer buffer = ByteBuffer.allocate(1024);
        while (true) {
            int i = fileC.read(buffer);
            if (i == 0 || i == -1) {
                break;
            }
            buffer.flip();
            outC.write(buffer);
            buffer.clear();
        }
        fis.close();
        return baos.toByteArray();
    } catch (IOException fnfe) {
        throw new ClassNotFoundException(className);
    }
}

From source file:com.turbospaces.serialization.PropertiesSerializer.java

/**
 * read entity from byte buffer stream (and remember the property values as array)
 * /*www  .  j  a v a  2  s . com*/
 * @param buffer
 *            byte array pointer
 * @return de-serialized entry
 */
public SerializationEntry readToSerializedEntry(final ByteBuffer buffer) {
    final Object values[] = new Object[cachedProperties.length];
    for (int i = 0, n = cachedProperties.length; i < n; i++)
        values[i] = DecoratedKryo.readPropertyValue(kryo, cachedProperties[i], buffer);
    buffer.clear();
    return new SerializationEntry(buffer,
            entityMetadata.setBulkPropertyValues(entityMetadata.newInstance(), values), values);
}

From source file:org.apache.nifi.io.nio.consumer.AbstractStreamConsumer.java

@Override
public final void process() throws IOException {
    if (isConsumerFinished()) {
        return;/*from w  ww.j  a v a2  s . c om*/
    }
    if (streamEnded.get() && filledBuffers.isEmpty()) {
        consumerEnded.set(true);
        onConsumerDone();
        return;
    }
    final ByteBuffer buffer = filledBuffers.poll();
    if (buffer != null) {
        final int bytesToProcess = buffer.remaining();
        try {
            processBuffer(buffer);
        } finally {
            buffer.clear();
            bufferPool.returnBuffer(buffer, bytesToProcess);
        }
    }
}