Examples of java.nio.channels.FileChannel.transferTo()

java.nio.channels.FileChannel.transferTo()
Transfers data from the file to the given channel. It may be very efficient. By invoking this methid, it will read form the file and write into the writable channel. Note: no guarantee whether all bytes may be transfered.And it does not modify the position of the channel. @param position the non-negative position to begin @param count the non-negative bytes to be transferred @param target the target channel to write into @return the number of bytes that were transferred. @throws IllegalArgumentException If the parameters are not correct @throws NonReadableChannelException If this channel is not readable @throws NonWritableChannelException If the target channel is not writable @throws ClosedChannelException If either channel has already been closed @throws AsynchronousCloseException If either channel is closed by other threads during this operation @throws ClosedByInterruptException If the thread is interrupted during this operation @throws IOException If any I/O error occurs

                
                long bytesTransferred;
                try
                {
                    /* returns the number of bytes transferred from file to the socket */
                    bytesTransferred = fc.transferTo(startPosition, limit, socketChannel_);
                }
                catch (IOException e)
                {
                    // at least jdk1.6.0 on Linux seems to throw IOException
                    // when the socket is full. (Bug fixed for 1.7: http://bugs.sun.com/view_bug.do?bug_id=5103988)

View Full Code Here


    try {


      // write out the checksum type and bytesperchecksum to client
      // skip the first two bytes that describe the version
      long val = mch.transferTo(versionSize, cheaderSize, out);
      if (val != cheaderSize) {
        String msg = "readBlockAccelerator for block  " + block +
                     " at offset " + 0 + 
                     " but could not transfer checksum header.";
        LOG.warn(msg);

View Full Code Here

      if (LOG.isDebugEnabled()) {
        LOG.debug("readBlockAccelerator metaOffset "  +  startMetaOffset + 
                  " mlength " +  metaLength);
      }
      // write out the checksums back to the client
      val = mch.transferTo(startMetaOffset, metaLength, out);
      if (val != metaLength) {
        String msg = "readBlockAccelerator for block  " + block +
                     " at offset " + startMetaOffset +
                     " but could not transfer checksums of size " +
                     metaLength + ". Transferred only " + val;

View Full Code Here

      File bakFile = new File(javaFile.getAbsolutePath() + ".bak");
      FileOutputStream fos = new FileOutputStream(bakFile);
      fos.write(DEFAULT_HEADER.getBytes());
      FileChannel fc = raf.getChannel();
      long count = raf.length() - endOfHeader;
      fc.transferTo(endOfHeader, count, fos.getChannel());
      fc.close();
      fos.close();
      raf.close();
      if (!javaFile.delete())
         log.severe("Failed to delete java file: " + javaFile);

View Full Code Here

            targetFileChannel = exchange.getConnection().getWorker().getXnio().openFile(tempTarget, FileAccess.READ_WRITE);
            sourceFileChannel = exchange.getConnection().getWorker().getXnio().openFile(file, FileAccess.READ_ONLY);


            StreamSinkConduit conduit = encoding.getEncoding().getResponseWrapper().wrap(new ImmediateConduitFactory<StreamSinkConduit>(new FileConduitTarget(targetFileChannel, exchange)), exchange);
            final ConduitStreamSinkChannel targetChannel = new ConduitStreamSinkChannel(null, conduit);
            long transferred = sourceFileChannel.transferTo(0, resource.getContentLength(), targetChannel);
            targetChannel.shutdownWrites();
            org.xnio.channels.Channels.flushBlocking(targetChannel);
            if (transferred != resource.getContentLength()) {
                UndertowLogger.REQUEST_LOGGER.error("Failed to write pre-cached file");
            }

View Full Code Here

            channel.write(buffer);
            assert buffer.remaining() == 0;


            while (start < endPosition)
            {
                long bytesTransferred = fc.transferTo(start, CHUNK_SIZE, channel);
                if (logger.isDebugEnabled())
                    logger.debug("Bytes transferred " + bytesTransferred);
                start += bytesTransferred;
                StreamOutManager.get(to).update(file, start);
            }

View Full Code Here

                
                long bytesTransferred;
                try
                {
                    /* returns the number of bytes transferred from file to the socket */
                    bytesTransferred = fc.transferTo(startPosition, limit, socketChannel_);
                }
                catch (IOException e)
                {
                    // at least jdk1.6.0 on Linux seems to throw IOException
                    // when the socket is full. (Bug fixed for 1.7: http://bugs.sun.com/view_bug.do?bug_id=5103988)

View Full Code Here

     */
    private static void copyFile(File in, File out) throws IOException {
        try (FileInputStream inStream = new FileInputStream(in);
                FileOutputStream outStream = new FileOutputStream(out);) {
            FileChannel inChannel = inStream.getChannel();
            inChannel.transferTo(0, inChannel.size(), outStream.getChannel());
        }
    }


}

View Full Code Here

                
                long bytesTransferred;
                try
                {
                    /* returns the number of bytes transferred from file to the socket */
                    bytesTransferred = fc.transferTo(startPosition, limit, socketChannel_);
                }
                catch (IOException e)
                {
                    // at least jdk1.6.0 on Linux seems to throw IOException
                    // when the socket is full. (Bug fixed for 1.7: http://bugs.sun.com/view_bug.do?bug_id=5103988)

View Full Code Here

            targetFileChannel = exchange.getConnection().getWorker().getXnio().openFile(tempTarget, FileAccess.READ_WRITE);
            sourceFileChannel = exchange.getConnection().getWorker().getXnio().openFile(file, FileAccess.READ_ONLY);


            StreamSinkConduit conduit = encoding.getEncoding().getResponseWrapper().wrap(new ImmediateConduitFactory<StreamSinkConduit>(new FileConduitTarget(targetFileChannel, exchange)), exchange);
            final ConduitStreamSinkChannel targetChannel = new ConduitStreamSinkChannel(null, conduit);
            long transferred = sourceFileChannel.transferTo(0, resource.getContentLength(), targetChannel);
            targetChannel.shutdownWrites();
            org.xnio.channels.Channels.flushBlocking(targetChannel);
            if (transferred != resource.getContentLength()) {
                UndertowLogger.REQUEST_LOGGER.error("Failed to write pre-cached file");
            }

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.