Example usage for java.io FileOutputStream getChannel

Introduction

In this page you can find the example usage for java.io FileOutputStream getChannel.

Prototype

public FileChannel getChannel() 

Source Link

Document

Returns the unique java.nio.channels.FileChannel FileChannel object associated with this file output stream.

Usage

From source file:math.tools.Browse.java

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
    if (table[jTable1.getSelectedRow()][3] == "Not Downloaded Yet") {
        System.out.println("downloading");
        FileOutputStream fos;
        try {//from  w  w  w  .j  av  a 2 s.  co  m
            URL website = new URL("" + table[jTable1.getSelectedRow()][4]);
            ReadableByteChannel rbc = Channels.newChannel(website.openStream());
            fos = new FileOutputStream(System.getProperty("user.home") + "//MathHelper//tools//"
                    + table[jTable1.getSelectedRow()][0] + ".jar");
            fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
        } catch (IOException ex) {
            Logger.getLogger(Browse.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
    try {
        Runtime.getRuntime().exec("java -jar " + System.getProperty("user.home") + "//MathHelper//tools//"
                + table[jTable1.getSelectedRow()][0] + ".jar");
    } catch (IOException ex) {
        Logger.getLogger(Browse.class.getName()).log(Level.SEVERE, null, ex);
    }
}

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From source file:org.gdms.driver.dbf.DBFDriver.java

@Override
public void createSource(String path, Metadata metadata, DataSourceFactory dataSourceFactory)
        throws DriverException {
    LOG.trace("Creating source file");
    try {// ww  w .j  ava 2 s .  co  m
        FileOutputStream fos = new FileOutputStream(new File(path));
        DbaseFileHeader header = getHeader(metadata, 0);
        DbaseFileWriter writer = new DbaseFileWriter(header, fos.getChannel());
        writer.close();
    } catch (IOException e) {
        throw new DriverException(e);
    } catch (DbaseFileException e) {
        throw new DriverException(e);
    }
}

---

From source file:dk.netarkivet.common.utils.FileUtils.java

/**
 * Copy file from one location to another. Will silently overwrite an
 * already existing file./*from  w w  w . j a v  a  2  s .c o  m*/
 *
 * @param from
 *            original to copy
 * @param to
 *            destination of copy
 * @throws IOFailure if an io error occurs while copying file,
 * or the original file does not exist.
 */
public static void copyFile(File from, File to) {
    ArgumentNotValid.checkNotNull(from, "File from");
    ArgumentNotValid.checkNotNull(to, "File to");
    if (!from.exists()) {
        String errMsg = "Original file '" + from.getAbsolutePath() + "' does not exist";
        log.warn(errMsg);
        throw new IOFailure(errMsg);
    }
    try {
        FileInputStream inStream = null;
        FileOutputStream outStream = null;
        FileChannel in = null;
        FileChannel out = null;
        try {
            inStream = new FileInputStream(from);
            outStream = new FileOutputStream(to);
            in = inStream.getChannel();
            out = outStream.getChannel();
            long bytesTransferred = 0;
            do {
                //Note: in.size() is called every loop, because if it should
                //change size, we might end up in an infinite loop trying to
                //copy more bytes than are actually available.
                bytesTransferred += in.transferTo(bytesTransferred,
                        Math.min(Constants.IO_CHUNK_SIZE, in.size() - bytesTransferred), out);
            } while (bytesTransferred < in.size());
        } finally {
            if (inStream != null) {
                inStream.close();
            }
            if (outStream != null) {
                outStream.close();
            }
            if (in != null) {
                in.close();
            }
            if (out != null) {
                out.close();
            }
        }
    } catch (IOException e) {
        final String errMsg = "Error copying file '" + from.getAbsolutePath() + "' to '" + to.getAbsolutePath()
                + "'";
        log.warn(errMsg, e);
        throw new IOFailure(errMsg, e);
    }
}

---

From source file:com.nesscomputing.db.postgres.embedded.EmbeddedPostgreSQL.java

private void cleanOldDataDirectories(File parentDirectory) {
    for (final File dir : parentDirectory.listFiles()) {
        if (!dir.isDirectory()) {
            continue;
        }/*from www.j a  v a 2  s.c  o m*/

        final File lockFile = new File(dir, LOCK_FILE_NAME);
        if (!lockFile.exists()) {
            continue;
        }
        try {
            final FileOutputStream fos = new FileOutputStream(lockFile);
            try {
                try (FileLock lock = fos.getChannel().tryLock()) {
                    if (lock != null) {
                        LOG.info("Found stale data directory {}", dir);
                        if (new File(dir, "postmaster.pid").exists()) {
                            try {
                                pgCtl(dir, "stop");
                                LOG.info("Shut down orphaned postmaster!");
                            } catch (Exception e) {
                                if (LOG.isDebugEnabled()) {
                                    LOG.warn("Failed to stop postmaster " + dir, e);
                                } else {
                                    LOG.warn("Failed to stop postmaster " + dir + ": " + e.getMessage());
                                }
                            }
                        }
                        FileUtils.deleteDirectory(dir);
                    }
                }
            } finally {
                fos.close();
            }
        } catch (final OverlappingFileLockException e) {
            // The directory belongs to another instance in this VM.
            LOG.trace("While cleaning old data directories", e);
        } catch (final Exception e) {
            LOG.warn("While cleaning old data directories", e);
        }
    }
}

---

From source file:org.alfresco.filesys.repo.CommandExecutorImpl.java

/**
 * @param sess SrvSession//  w  w w. j  a  v a  2 s .c o m
 * @param tree TreeConnection
 * @param command Command
 * @param result Object
 * @return Object
 * @throws IOException
 */
private Object executeInternal(SrvSession sess, TreeConnection tree, Command command, Object result)
        throws IOException {
    FileFilterMode.setClient(ClientHelper.getClient(sess));
    try {
        if (command instanceof CompoundCommand) {
            Object ret = null;
            logger.debug("compound command received");
            CompoundCommand x = (CompoundCommand) command;

            for (Command compoundPart : x.getCommands()) {
                logger.debug("running part of compound command");
                Object val = executeInternal(sess, tree, compoundPart, result);
                if (val != null) {
                    // Return the value from the last command.
                    ret = val;
                }
            }
            return ret;
        } else if (command instanceof CreateFileCommand) {
            logger.debug("create file command");
            CreateFileCommand create = (CreateFileCommand) command;
            return repositoryDiskInterface.createFile(create.getRootNode(), create.getPath(),
                    create.getAllocationSize(), create.isHidden());
        } else if (command instanceof RestoreFileCommand) {
            logger.debug("restore file command");
            RestoreFileCommand restore = (RestoreFileCommand) command;
            return repositoryDiskInterface.restoreFile(sess, tree, restore.getRootNode(), restore.getPath(),
                    restore.getAllocationSize(), restore.getOriginalNodeRef());
        } else if (command instanceof DeleteFileCommand) {
            logger.debug("delete file command");
            DeleteFileCommand delete = (DeleteFileCommand) command;
            return repositoryDiskInterface.deleteFile2(sess, tree, delete.getRootNode(), delete.getPath());
        } else if (command instanceof OpenFileCommand) {
            logger.debug("open file command");
            OpenFileCommand o = (OpenFileCommand) command;

            OpenFileMode mode = o.getMode();
            return repositoryDiskInterface.openFile(sess, tree, o.getRootNodeRef(), o.getPath(), mode,
                    o.isTruncate());

        } else if (command instanceof CloseFileCommand) {
            logger.debug("close file command");
            CloseFileCommand c = (CloseFileCommand) command;
            return repositoryDiskInterface.closeFile(tree, c.getRootNodeRef(), c.getPath(), c.getNetworkFile());
        } else if (command instanceof ReduceQuotaCommand) {
            logger.debug("reduceQuota file command");
            ReduceQuotaCommand r = (ReduceQuotaCommand) command;
            repositoryDiskInterface.reduceQuota(sess, tree, r.getNetworkFile());
        } else if (command instanceof RenameFileCommand) {
            logger.debug("rename command");
            RenameFileCommand rename = (RenameFileCommand) command;

            repositoryDiskInterface.renameFile(rename.getRootNode(), rename.getFromPath(), rename.getToPath(),
                    rename.isSoft(), false);
        } else if (command instanceof MoveFileCommand) {
            logger.debug("move command");
            MoveFileCommand move = (MoveFileCommand) command;
            repositoryDiskInterface.renameFile(move.getRootNode(), move.getFromPath(), move.getToPath(), false,
                    move.isMoveAsSystem());
        } else if (command instanceof CopyContentCommand) {
            if (logger.isDebugEnabled()) {
                logger.debug("Copy content command - copy content");
            }
            CopyContentCommand copy = (CopyContentCommand) command;
            repositoryDiskInterface.copyContent(copy.getRootNode(), copy.getFromPath(), copy.getToPath());
        } else if (command instanceof DoNothingCommand) {
            if (logger.isDebugEnabled()) {
                logger.debug("Do Nothing Command - doing nothing");
            }
        } else if (command instanceof ResultCallback) {
            if (logger.isDebugEnabled()) {
                logger.debug("Result Callback");
            }
            ResultCallback callback = (ResultCallback) command;
            callback.execute(result);
        } else if (command instanceof RemoveTempFileCommand) {
            RemoveTempFileCommand r = (RemoveTempFileCommand) command;
            if (logger.isDebugEnabled()) {
                logger.debug("Remove Temp File:" + r.getNetworkFile());
            }
            File file = r.getNetworkFile().getFile();
            boolean isDeleted = file.delete();

            if (!isDeleted) {
                logger.debug("unable to delete temp file:" + r.getNetworkFile() + ", closed="
                        + r.getNetworkFile().isClosed());

                /*
                 * Unable to delete temporary file
                 * Could be a bug with the file handle not being closed, but yourkit does not
                 * find anything awry.
                 * There are reported Windows JVM bugs such as 4715154 ... 
                 */
                FileOutputStream fos = new FileOutputStream(file);
                FileChannel outChan = null;
                try {
                    outChan = fos.getChannel();
                    outChan.truncate(0);
                } catch (IOException e) {
                    logger.debug("unable to clean up file", e);
                } finally {
                    if (outChan != null) {
                        try {
                            outChan.close();
                        } catch (IOException e) {
                        }
                    }
                    fos.close();
                }
            }

        } else if (command instanceof ReturnValueCommand) {
            ReturnValueCommand r = (ReturnValueCommand) command;
            if (logger.isDebugEnabled()) {
                logger.debug("Return value");
            }
            return r.getReturnValue();
        } else if (command instanceof RemoveNoContentFileOnError) {
            RemoveNoContentFileOnError r = (RemoveNoContentFileOnError) command;
            if (logger.isDebugEnabled()) {
                logger.debug("Remove no content file on error");
            }
            repositoryDiskInterface.deleteEmptyFile(r.getRootNodeRef(), r.getPath());
        }
    } finally {
        FileFilterMode.clearClient();
    }

    return null;
}

---

From source file:com.opentable.db.postgres.embedded.EmbeddedPostgreSQL.java

private void cleanOldDataDirectories(File parentDirectory) {
    for (final File dir : parentDirectory.listFiles()) {
        if (!dir.isDirectory()) {
            continue;
        }/*from   w w w. j av a 2s  .c o  m*/

        final File lockFile = new File(dir, LOCK_FILE_NAME);
        final boolean isTooNew = System.currentTimeMillis() - lockFile.lastModified() < 10 * 60 * 1000;
        if (!lockFile.exists() || isTooNew) {
            continue;
        }
        try {
            final FileOutputStream fos = new FileOutputStream(lockFile);
            try {
                try (FileLock lock = fos.getChannel().tryLock()) {
                    if (lock != null) {
                        LOG.info("Found stale data directory {}", dir);
                        if (new File(dir, "postmaster.pid").exists()) {
                            try {
                                pgCtl(dir, "stop");
                                LOG.info("Shut down orphaned postmaster!");
                            } catch (Exception e) {
                                if (LOG.isDebugEnabled()) {
                                    LOG.warn("Failed to stop postmaster " + dir, e);
                                } else {
                                    LOG.warn("Failed to stop postmaster " + dir + ": " + e.getMessage());
                                }
                            }
                        }
                        FileUtils.deleteDirectory(dir);
                    }
                }
            } finally {
                fos.close();
            }
        } catch (final OverlappingFileLockException e) {
            // The directory belongs to another instance in this VM.
            LOG.trace("While cleaning old data directories", e);
        } catch (final Exception e) {
            LOG.warn("While cleaning old data directories", e);
        }
    }
}

---

From source file:com.castlabs.csf.cff.CreateStreamingDeliveryTargetFileset.java

@Override
public int run() throws Exception {
    logger = setupLogger();//from w w w  .  ja va2s  .  c o m
    if (encKid != null) {
        this.keyid = UUID.fromString(this.encKid);
        this.cek = new SecretKeySpec(Hex.decodeHex(this.encKeySecretKey), "AES");
    }

    Map<Track, String> trackOriginalFilename = setupTracks();
    FragmentIntersectionFinder intersectionFinder = getFragmentStartSamples(trackOriginalFilename);
    Map<Track, String> filenames = generateFilenames(trackOriginalFilename);

    StreamingDeliveryTargetMp4Builder mp4Builder = new StreamingDeliveryTargetMp4Builder();
    mp4Builder.setIntersectionFinder(intersectionFinder);

    Movie m = new Movie();
    for (Map.Entry<Track, String> e : trackOriginalFilename.entrySet()) {
        if (keyid != null) {
            m.setTracks(Collections.<Track>singletonList(new CencEncryptingTrackImpl(e.getKey(), keyid, cek)));
        } else {
            m.setTracks(Collections.<Track>singletonList(e.getKey()));
        }
        String apid = "urn:dece:apid:org:castlabs:" + FilenameUtils.getBaseName(e.getValue());
        mp4Builder.setApid(apid);
        Container c = mp4Builder.build(m);
        String filename = filenames.get(e.getKey());
        FileOutputStream fos = new FileOutputStream(filename);
        logger.info(String.format("Writing %s (track_ID=%d, apid=%s)", filename,
                e.getKey().getTrackMetaData().getTrackId(), apid));
        c.writeContainer(fos.getChannel());
        fos.close();
    }
    return 0;
}

---

From source file:eu.stratosphere.nephele.checkpointing.WriteThread.java

private FileChannel getMetaDataFileChannel(final String suffix) throws IOException {

    if (LOG.isDebugEnabled()) {
        LOG.debug("Writing checkpointing meta data to directory " + this.checkpointPath);
    }//  w  ww.  java2  s .c  o  m

    // Bypass FileSystem API for local checkpoints
    if (!this.distributed) {

        final FileOutputStream fos = new FileOutputStream(this.checkpointPath.toUri().getPath() + Path.SEPARATOR
                + CheckpointUtils.METADATA_PREFIX + "_" + this.vertexID + suffix);

        return fos.getChannel();
    }

    return new FileChannelWrapper(this.fileSystem,
            this.checkpointPath
                    .suffix(Path.SEPARATOR + CheckpointUtils.METADATA_PREFIX + "_" + this.vertexID + suffix),
            BUFFER_SIZE, (short) 2); // TODO:
    // Make
    // replication
    // configurable
}

---

From source file:math.tools.Browse.java

/**
 * Creates new form jsontable/* w  ww .j a v  a2  s.c o m*/
 */
public Browse() {
    BufferedReader in;
    FileOutputStream fos;
    new File(System.getProperty("user.home") + "//MathHelper//tools//").mkdirs();
    try {
        URL website = new URL("https://dl.dropboxusercontent.com/u/67622419/mathTools/toolInfo.json");
        ReadableByteChannel rbc = Channels.newChannel(website.openStream());
        fos = new FileOutputStream(System.getProperty("user.home") + "//MathHelper//toolInfo.json");
        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
    } catch (IOException ex) {
        Logger.getLogger(Browse.class.getName()).log(Level.SEVERE, null, ex);
    }
    try {
        in = new BufferedReader(
                new FileReader(System.getProperty("user.home") + "//MathHelper//toolInfo.json"));
        String inputLine;
        int i = -1;
        JSONObject json;
        while ((inputLine = in.readLine()) != null) {
            i++;
            json = (JSONObject) new JSONParser().parse(inputLine);
            table[i][0] = json.get("name");
            table[i][1] = json.get("author");
            table[i][2] = json.get("rating");
            File f = new File(
                    System.getProperty("user.home") + "//MathHelper//tools//" + json.get("name") + ".jar");
            if (!f.exists()) {
                table[i][3] = "Not Downloaded Yet";
            } else {
                table[i][3] = "Downloaded";
            }
            table[i][4] = json.get("adress");
        }
        in.close();
    } catch (IOException | ParseException ex) {
        Logger.getLogger(Browse.class.getName()).log(Level.SEVERE, null, ex);
    }
    initComponents();
}

---

From source file:org.gdms.driver.dbf.DBFDriver.java

public void writeFile(File file, RowProvider dataSource, ProgressMonitor pm) throws DriverException {
    LOG.trace("Writing source file");
    try {//from   w w  w.  j  ava  2s.  c  o m
        FileOutputStream fos = new FileOutputStream(file);
        DbaseFileHeader header = getHeader(dataSource.getMetadata(), (int) dataSource.getRowCount());
        DbaseFileWriter writer = new DbaseFileWriter(header, fos.getChannel());
        final int numRecords = header.getNumRecords();
        pm.startTask("Writing file", numRecords);
        for (int i = 0; i < numRecords; i++) {
            if (i >= 100 && i % 100 == 0) {
                if (pm.isCancelled()) {
                    break;
                } else {
                    pm.progressTo(i);
                }
            }
            writer.write(dataSource.getRow(i));
        }
        pm.progressTo(numRecords);
        writer.close();
    } catch (IOException e) {
        throw new DriverException(e);
    } catch (DbaseFileException e) {
        throw new DriverException(e);
    }
    pm.endTask();
}

---

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