Example usage for java.nio.channels FileChannel close

Introduction

In this page you can find the example usage for java.nio.channels FileChannel close.

Prototype

public final void close() throws IOException 

Source Link

Document

Closes this channel.

Usage

From source file:org.yamj.core.service.file.tools.FileTools.java

/**
 * Copy the source file to the destination
 *
 * @param src/* w ww  .  j  av a 2  s  .  co  m*/
 * @param dst
 * @return
 */
public static boolean copyFile(File src, File dst) {
    boolean returnValue = Boolean.FALSE;

    if (!src.exists()) {
        LOG.error("The file '{}' does not exist", src);
        return returnValue;
    }

    if (dst.isDirectory()) {
        makeDirectories(dst);
        returnValue = copyFile(src, new File(dst + File.separator + src.getName()));
    } else {
        FileInputStream inSource = null;
        FileOutputStream outSource = null;
        FileChannel inChannel = null;
        FileChannel outChannel = null;
        try {
            // gc: copy using file channels, potentially much faster
            inSource = new FileInputStream(src);
            outSource = new FileOutputStream(dst);
            inChannel = inSource.getChannel();
            outChannel = outSource.getChannel();

            long p = 0, s = inChannel.size();
            while (p < s) {
                p += inChannel.transferTo(p, 1024 * 1024, outChannel);
            }
            return Boolean.TRUE;
        } catch (IOException error) {
            LOG.error("Failed copying file '{}' to '{}'", src, dst);
            LOG.error("File copying error", error);
            returnValue = Boolean.FALSE;
        } finally {
            if (inChannel != null) {
                try {
                    inChannel.close();
                } catch (IOException ex) {
                    // Ignore
                }
            }
            if (inSource != null) {
                try {
                    inSource.close();
                } catch (IOException ex) {
                    // Ignore
                }
            }

            if (outChannel != null) {
                try {
                    outChannel.close();
                } catch (IOException ex) {
                    // Ignore
                }
            }
            if (outSource != null) {
                try {
                    outSource.close();
                } catch (IOException ex) {
                    // Ignore
                }
            }
        }
    }

    return returnValue;
}

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From source file:org.lexgrid.loader.writer.NoClosingRootTagStaxEventItemWriter.java

@Override
public void close() {
    super.close();

    String rootTag = "</" + getRootTagName() + ">";

    String xml = null;//from  w w w .  j a v  a  2  s . c  om
    try {
        xml = FileUtils.readFileToString(xmlFile);
    } catch (IOException e) {
        throw new RuntimeException(e);
    }

    if (!xml.endsWith(rootTag)) {
        try {
            FileOutputStream os = new FileOutputStream(xmlFile, true);
            FileChannel channel = os.getChannel();

            ByteBuffer byteBuffer = ByteBuffer.wrap(rootTag.getBytes());
            channel.write(byteBuffer);
            channel.close();

            xml = FileUtils.readFileToString(xmlFile);
        } catch (IOException ioe) {
            throw new RuntimeException(ioe);
        }
    }
}

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From source file:com.stimulus.archiva.store.MessageStore.java

public static void copy(File source, File dest) throws IOException {
    FileChannel in = null, out = null;
    try {/*  w ww  .j a v  a2 s .  com*/
        in = new FileInputStream(source).getChannel();
        out = new FileOutputStream(dest).getChannel();

        long size = in.size();
        MappedByteBuffer buf = in.map(FileChannel.MapMode.READ_ONLY, 0, size);

        out.write(buf);

    } finally {
        if (in != null)
            in.close();
        if (out != null)
            out.close();
    }
}

---

From source file:me.carpela.network.pt.cracker.tools.ttorrent.Torrent.java

private static String hashFiles(List<File> files, int pieceLenght)
        throws InterruptedException, IOException, NoSuchAlgorithmException {
    int threads = getHashingThreadsCount();
    ExecutorService executor = Executors.newFixedThreadPool(threads);
    ByteBuffer buffer = ByteBuffer.allocate(pieceLenght);
    List<Future<String>> results = new LinkedList<Future<String>>();
    StringBuilder hashes = new StringBuilder();

    long length = 0L;
    int pieces = 0;

    long start = System.nanoTime();
    for (File file : files) {

        length += file.length();/* ww w. j ava2  s  .  c o m*/

        FileInputStream fis = new FileInputStream(file);
        FileChannel channel = fis.getChannel();
        int step = 10;

        try {
            while (channel.read(buffer) > 0) {
                if (buffer.remaining() == 0) {
                    buffer.clear();
                    results.add(executor.submit(new CallableChunkHasher(buffer)));
                }

                if (results.size() >= threads) {
                    pieces += accumulateHashes(hashes, results);
                }

                if (channel.position() / (double) channel.size() * 100f > step) {
                    step += 10;
                }
            }
        } finally {
            channel.close();
            fis.close();
        }
    }

    // Hash the last bit, if any
    if (buffer.position() > 0) {
        buffer.limit(buffer.position());
        buffer.position(0);
        results.add(executor.submit(new CallableChunkHasher(buffer)));
    }

    pieces += accumulateHashes(hashes, results);

    // Request orderly executor shutdown and wait for hashing tasks to
    // complete.
    executor.shutdown();
    while (!executor.isTerminated()) {
        Thread.sleep(10);
    }
    long elapsed = System.nanoTime() - start;

    int expectedPieces = (int) (Math.ceil((double) length / pieceLenght));
    return hashes.toString();
}

---

From source file:org.lnicholls.galleon.util.Tools.java

public static void copy(File src, File dst) {
    try {//from w  ww.  j av  a2 s  . com
        FileChannel srcChannel = new FileInputStream(src).getChannel();
        FileChannel dstChannel = new FileOutputStream(dst).getChannel();
        dstChannel.transferFrom(srcChannel, 0, srcChannel.size());
        srcChannel.close();
        srcChannel = null;
        dstChannel.close();
        dstChannel = null;
    } catch (IOException ex) {
        Tools.logException(Tools.class, ex, dst.getAbsolutePath());
    }
}

---

From source file:com.gsbabil.antitaintdroid.UtilityFunctions.java

/**
 * Source://from   w  w w . j  a  va  2 s .c o  m
 * http://stackoverflow.com/questions/4349075/bitmapfactory-decoderesource
 * -returns-a-mutable-bitmap-in-android-2-2-and-an-immu
 * 
 * Converts a immutable bitmap to a mutable bitmap. This operation doesn't
 * allocates more memory that there is already allocated.
 * 
 * @param imgIn
 *            - Source image. It will be released, and should not be used
 *            more
 * @return a copy of imgIn, but immutable.
 */
public static Bitmap convertBitmapToMutable(Bitmap imgIn) {
    try {
        // this is the file going to use temporally to save the bytes.
        // This file will not be a image, it will store the raw image data.
        File file = new File(MyApp.context.getFilesDir() + File.separator + "temp.tmp");

        // Open an RandomAccessFile
        // Make sure you have added uses-permission
        // android:name="android.permission.WRITE_EXTERNAL_STORAGE"
        // into AndroidManifest.xml file
        RandomAccessFile randomAccessFile = new RandomAccessFile(file, "rw");

        // get the width and height of the source bitmap.
        int width = imgIn.getWidth();
        int height = imgIn.getHeight();
        Config type = imgIn.getConfig();

        // Copy the byte to the file
        // Assume source bitmap loaded using options.inPreferredConfig =
        // Config.ARGB_8888;
        FileChannel channel = randomAccessFile.getChannel();
        MappedByteBuffer map = channel.map(MapMode.READ_WRITE, 0, imgIn.getRowBytes() * height);
        imgIn.copyPixelsToBuffer(map);
        // recycle the source bitmap, this will be no longer used.
        imgIn.recycle();
        System.gc();// try to force the bytes from the imgIn to be released

        // Create a new bitmap to load the bitmap again. Probably the memory
        // will be available.
        imgIn = Bitmap.createBitmap(width, height, type);
        map.position(0);
        // load it back from temporary
        imgIn.copyPixelsFromBuffer(map);
        // close the temporary file and channel , then delete that also
        channel.close();
        randomAccessFile.close();

        // delete the temporary file
        file.delete();

    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    return imgIn;
}

---

From source file:org.apache.usergrid.chop.runner.drivers.ResultsLog.java

@Override
public void truncate() throws IOException {
    if (isOpen.get()) {
        throw new IOException("Cannot truncate while log is open for writing. Close the log then truncate.");
    }//  w  w w.  j a v  a  2s.  co  m

    // Synchronize on isOpen to prevent re-opening while truncating (rare)
    synchronized (isOpen) {
        File results = new File(resultsFile.get());
        FileChannel channel = new FileOutputStream(results, true).getChannel();
        channel.truncate(0);
        channel.close();
        resultCount.set(0);
    }
}

---

From source file:com.thinkberg.moxo.vfs.s3.jets3t.Jets3tFileObject.java

protected void doAttach() throws Exception {
    if (!attached) {
        try {//from   w w  w .ja va  2  s. co  m
            object = service.getObject(bucket, getS3Key());
            System.err.println("Attached file to S3 Object: " + object);
            InputStream is = object.getDataInputStream();
            if (object.getContentLength() > 0) {
                ReadableByteChannel rbc = Channels.newChannel(is);
                FileChannel cacheFc = getCacheFileChannel();
                cacheFc.transferFrom(rbc, 0, object.getContentLength());
                cacheFc.close();
                rbc.close();
            } else {
                is.close();
            }
        } catch (S3ServiceException e) {
            object = new S3Object(bucket, getS3Key());
            object.setLastModifiedDate(new Date());
            System.err.println("Attached file to new S3 Object: " + object);
        }
        attached = true;
    }
}

---

From source file:gov.nih.nci.firebird.selenium2.framework.AbstractFirebirdWebDriverTest.java

private void truncateJbossLog() throws IOException {
    FileChannel outChan = new FileOutputStream(serverLog, true).getChannel();
    outChan.truncate(0);//from   w w  w.  ja v  a2  s .  c om
    outChan.close();
}

---

From source file:org.loadosophia.client.LoadosophiaAPIClient.java

protected String[] multipartPost(LinkedList<Part> parts, String URL, int expectedSC) throws IOException {
    log.debug("Request POST: " + URL);
    parts.add(new StringPart("token", token));

    PostMethod postRequest = new PostMethod(URL);
    MultipartRequestEntity multipartRequest = new MultipartRequestEntity(parts.toArray(new Part[parts.size()]),
            postRequest.getParams());//from   www  . java 2  s  .  co m
    postRequest.setRequestEntity(multipartRequest);
    int result = httpClient.executeMethod(postRequest);
    if (result != expectedSC) {
        String fname = File.createTempFile("error_", ".html").getAbsolutePath();
        notifier.notifyAbout("Saving server error response to: " + fname);
        FileOutputStream fos = new FileOutputStream(fname);
        FileChannel resultFile = fos.getChannel();
        resultFile.write(ByteBuffer.wrap(postRequest.getResponseBody()));
        resultFile.close();
        throw new HttpException("Request returned not " + expectedSC + " status code: " + result);
    }
    byte[] bytes = postRequest.getResponseBody();
    if (bytes == null) {
        bytes = new byte[0];
    }
    String response = new String(bytes);
    return response.trim().split(";");
}

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