Example usage for java.io ObjectOutputStream flush

List of usage examples for java.io ObjectOutputStream flush

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Introduction

In this page you can find the example usage for java.io ObjectOutputStream flush.

Prototype

public void flush() throws IOException

Source Link

Document

Flushes the stream.

Usage

From source file:org.glom.web.server.Utils.java

static public Object deepCopy(final Object oldObj) {
    ObjectOutputStream oos = null;
    ObjectInputStream ois = null;

    try {/* w ww.j  ava2s.c o  m*/
        final ByteArrayOutputStream bos = new ByteArrayOutputStream();
        oos = new ObjectOutputStream(bos);
        // serialize and pass the object
        oos.writeObject(oldObj);
        oos.flush();
        final ByteArrayInputStream bin = new ByteArrayInputStream(bos.toByteArray());
        ois = new ObjectInputStream(bin);

        // return the new object
        return ois.readObject();
    } catch (final Exception e) {
        System.out.println("Exception in deepCopy:" + e);
        return null;
    } finally {
        try {
            oos.close();
            ois.close();
        } catch (final IOException e) {
            System.out.println("Exception in deepCopy during finally: " + e);
            return null;
        }
    }
}

From source file:org.apache.lens.ml.impl.ModelLoader.java

/**
 * Save test report./*from w w w.  j  av  a  2 s . c  o  m*/
 *
 * @param conf   the conf
 * @param report the report
 * @throws IOException Signals that an I/O exception has occurred.
 */
public static void saveTestReport(Configuration conf, MLTestReport report) throws IOException {
    Path reportDir = new Path(conf.get(TEST_REPORT_BASE_DIR, TEST_REPORT_BASE_DIR_DEFAULT));
    FileSystem fs = reportDir.getFileSystem(conf);

    if (!fs.exists(reportDir)) {
        log.info("Creating test report dir {}", reportDir.toUri().toString());
        fs.mkdirs(reportDir);
    }

    Path algoDir = new Path(reportDir, report.getAlgorithm());

    if (!fs.exists(algoDir)) {
        log.info("Creating algorithm report dir {}", algoDir.toUri().toString());
        fs.mkdirs(algoDir);
    }

    ObjectOutputStream reportOutputStream = null;
    Path reportSaveLocation;
    try {
        reportSaveLocation = new Path(algoDir, report.getReportID());
        reportOutputStream = new ObjectOutputStream(fs.create(reportSaveLocation));
        reportOutputStream.writeObject(report);
        reportOutputStream.flush();
    } catch (IOException ioexc) {
        log.error("Error saving test report {}", report.getReportID(), ioexc);
        throw ioexc;
    } finally {
        IOUtils.closeQuietly(reportOutputStream);
    }
    log.info("Saved report {} at location {}", report.getReportID(), reportSaveLocation.toUri());
}

From source file:org.apache.lens.ml.ModelLoader.java

/**
 * Save test report./* w ww.java  2  s.com*/
 *
 * @param conf   the conf
 * @param report the report
 * @throws IOException Signals that an I/O exception has occurred.
 */
public static void saveTestReport(Configuration conf, MLTestReport report) throws IOException {
    Path reportDir = new Path(conf.get(TEST_REPORT_BASE_DIR, TEST_REPORT_BASE_DIR_DEFAULT));
    FileSystem fs = reportDir.getFileSystem(conf);

    if (!fs.exists(reportDir)) {
        LOG.info("Creating test report dir " + reportDir.toUri().toString());
        fs.mkdirs(reportDir);
    }

    Path algoDir = new Path(reportDir, report.getAlgorithm());

    if (!fs.exists(algoDir)) {
        LOG.info("Creating algorithm report dir " + algoDir.toUri().toString());
        fs.mkdirs(algoDir);
    }

    ObjectOutputStream reportOutputStream = null;
    Path reportSaveLocation;
    try {
        reportSaveLocation = new Path(algoDir, report.getReportID());
        reportOutputStream = new ObjectOutputStream(fs.create(reportSaveLocation));
        reportOutputStream.writeObject(report);
        reportOutputStream.flush();
    } catch (IOException ioexc) {
        LOG.error("Error saving test report " + report.getReportID(), ioexc);
        throw ioexc;
    } finally {
        IOUtils.closeQuietly(reportOutputStream);
    }
    LOG.info("Saved report " + report.getReportID() + " at location " + reportSaveLocation.toUri());
}

From source file:com.kellerkindt.scs.utilities.Utilities.java

/**
 * Serializes the MetaData of an ItemStack
 * and marshals it then in a String/*  w ww .  ja  v  a2  s  . c o  m*/
 * @param itemMeta The MetaData so save
 * @return The marshaled ItemStack as String
 * @throws IOException On any internal Exception
 */
public static String toHexString(ItemMeta itemMeta) throws IOException {

    // create streams
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ObjectOutputStream oos = new ObjectOutputStream(baos);

    // write map
    oos.writeObject(itemMeta.serialize());
    oos.flush();

    // toHexString
    return new HexBinaryAdapter().marshal(baos.toByteArray());
}

From source file:org.mule.transport.jms.JmsMessageUtils.java

/**
 * @param message the message to receive the bytes from. Note this only works for
 *                TextMessge, ObjectMessage, StreamMessage and BytesMessage.
 * @param jmsSpec indicates the JMS API version, either
 *                {@link JmsConstants#JMS_SPECIFICATION_102B} or
 *                {@link JmsConstants#JMS_SPECIFICATION_11}. Any other value
 *                including <code>null</code> is treated as fallback to
 *                {@link JmsConstants#JMS_SPECIFICATION_102B}.
 * @return a byte array corresponding with the message payload
 * @throws JMSException        if the message can't be read or if the message passed is
 *                             a MapMessage
 * @throws java.io.IOException if a failure occurs while reading the stream and
 *                             converting the message data
 *///  ww w  . j  ava2  s  .c o m
public static byte[] toByteArray(Message message, String jmsSpec, String encoding)
        throws JMSException, IOException {
    if (message instanceof BytesMessage) {
        BytesMessage bMsg = (BytesMessage) message;
        bMsg.reset();

        if (JmsConstants.JMS_SPECIFICATION_11.equals(jmsSpec)) {
            long bmBodyLength = bMsg.getBodyLength();
            if (bmBodyLength > Integer.MAX_VALUE) {
                throw new JMSException("Size of BytesMessage exceeds Integer.MAX_VALUE; "
                        + "please consider using JMS StreamMessage instead");
            }

            if (bmBodyLength > 0) {
                byte[] bytes = new byte[(int) bmBodyLength];
                bMsg.readBytes(bytes);
                return bytes;
            } else {
                return ArrayUtils.EMPTY_BYTE_ARRAY;
            }
        } else {
            ByteArrayOutputStream baos = new ByteArrayOutputStream(4096);
            byte[] buffer = new byte[4096];
            int len;

            while ((len = bMsg.readBytes(buffer)) != -1) {
                baos.write(buffer, 0, len);
            }

            if (baos.size() > 0) {
                return baos.toByteArray();
            } else {
                return ArrayUtils.EMPTY_BYTE_ARRAY;
            }
        }
    } else if (message instanceof StreamMessage) {
        StreamMessage sMsg = (StreamMessage) message;
        sMsg.reset();

        ByteArrayOutputStream baos = new ByteArrayOutputStream(4096);
        byte[] buffer = new byte[4096];
        int len;

        while ((len = sMsg.readBytes(buffer)) != -1) {
            baos.write(buffer, 0, len);
        }

        return baos.toByteArray();
    } else if (message instanceof ObjectMessage) {
        ObjectMessage oMsg = (ObjectMessage) message;
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ObjectOutputStream os = new ObjectOutputStream(baos);
        os.writeObject(oMsg.getObject());
        os.flush();
        os.close();
        return baos.toByteArray();
    } else if (message instanceof TextMessage) {
        TextMessage tMsg = (TextMessage) message;
        String tMsgText = tMsg.getText();

        if (null == tMsgText) {
            // Avoid creating new instances of byte arrays, even empty ones. The
            // load on this part of the code can be high.
            return ArrayUtils.EMPTY_BYTE_ARRAY;
        } else {
            return tMsgText.getBytes(encoding);
        }
    } else {
        throw new JMSException("Cannot get bytes from Map Message");
    }
}

From source file:jfs.sync.encryption.JFSEncryptedStream.java

public static OutputStream createOutputStream(long compressionLimit, OutputStream baseOutputStream, long length,
        Cipher cipher) throws IOException {
    OutputStream result = null;//w  w w  .  j a  v  a 2 s . com
    Runtime runtime = Runtime.getRuntime();
    long freeMem = runtime.totalMemory() / SPACE_RESERVE;
    if (length >= freeMem) {
        if (log.isWarnEnabled()) {
            log.warn("JFSEncryptedStream.createOutputStream() GC " + freeMem + "/" + runtime.maxMemory());
        } // if
        runtime.gc();
        freeMem = runtime.totalMemory() / SPACE_RESERVE;
    } // if
    if ((length < compressionLimit) && (length < freeMem)) {
        result = new JFSEncryptedStream(baseOutputStream, cipher);
    } else {
        if (length < freeMem) {
            if (log.isInfoEnabled()) {
                log.info("JFSEncryptedStream.createOutputStream() not compressing");
            } // if
        } else {
            if (log.isWarnEnabled()) {
                log.warn("JFSEncryptedStream.createOutputStream() due to memory constraints (" + length + "/"
                        + freeMem + ") not compressing");
            } // if
        } // if
        ObjectOutputStream oos = new ObjectOutputStream(baseOutputStream);
        oos.writeByte(COMPRESSION_NONE);
        oos.writeLong(length);
        oos.flush();
        result = baseOutputStream;
        if (cipher != null) {
            result = new CipherOutputStream(result, cipher);
        } // if
    } // if
    return result;
}

From source file:com.stgmastek.core.logic.ExecutionOrder.java

/**
 * Saves the state of the batch for revision runs usage 
 * If the current batch is 1000 and revision is 1 then the file would 
 * be saved as '1000_1.savepoint' /*from   w  w w  .  j av a2 s. c  o m*/
 * 
 * @param batchContext
 *         The job batchContext of the batch 
 * @throws BatchException
 *          Any exception occurred during the serialization process 
 */
public static synchronized void saveBatchState(BatchContext batchContext) throws BatchException {
    BatchInfo toSaveBatchInfo = batchContext.getBatchInfo();
    toSaveBatchInfo.setProgressLevelAtLastSavePoint(
            (ProgressLevel) ProgressLevel.getProgressLevel(toSaveBatchInfo.getBatchNo()).clone()); //clone is necessary as ProgresLevel is static
    if (logger.isDebugEnabled()) {
        logger.debug("Saving Current Batch progress level as ==>"
                + ProgressLevel.getProgressLevel(toSaveBatchInfo.getBatchNo()).toString());
    }
    String savepointFilePath = Configurations.getConfigurations().getConfigurations("CORE", "SAVEPOINT",
            "DIRECTORY");
    ObjectOutputStream oos = null;
    try {
        oos = new ObjectOutputStream(new FileOutputStream(FilenameUtils.concat(savepointFilePath,
                toSaveBatchInfo.getBatchNo() + "_" + toSaveBatchInfo.getBatchRevNo() + ".savepoint")));
        oos.writeObject(toSaveBatchInfo);
        oos.flush();
        batchContext.setBatchStateSaved(true);
    } catch (FileNotFoundException e) {
        batchContext.setBatchStateSaved(false);
        logger.error(e);
        throw new BatchException(e.getMessage(), e);
    } catch (IOException e) {
        batchContext.setBatchStateSaved(false);
        logger.error(e);
        throw new BatchException(e.getMessage(), e);
    } finally {
        IOUtils.closeQuietly(oos);
    }
}

From source file:org.openml.weka.algorithm.WekaAlgorithm.java

public static File classifierSerializedToFile(Classifier cls, Integer task_id) throws IOException {
    File file = File.createTempFile("WekaSerialized_" + cls.getClass().getName(), ".model");
    ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(file));
    oos.writeObject(cls);/*www .j  av  a2 s. c om*/
    oos.flush();
    oos.close();
    file.deleteOnExit();
    return file;
}

From source file:com.uberspot.storageutils.StorageUtils.java

/** Save the given object to a file in external storage
 * @param obj the object to save/* w w w.j  a  va 2  s  .c  o m*/
 * @param directory the directory in the SD card to save it into
 * @param fileName the name of the file
 * @param overwrite if set to true the file will be overwritten if it already exists
 * @return true if the file was written successfully, false otherwise
 */
public static boolean saveObjectToExternalStorage(Object obj, String directory, String fileName,
        boolean overwrite) {
    if (!directory.startsWith(File.separator))
        directory = File.separator + directory;

    File dir = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + directory);
    if (!dir.exists())
        dir.mkdirs();

    File file = new File(dir, fileName);
    if (file.exists() && !overwrite)
        return false;
    ObjectOutputStream output = null;
    try {
        output = new ObjectOutputStream(new BufferedOutputStream(new FileOutputStream(file)));
        output.writeObject(obj);
        output.flush();
        return true;
    } catch (Exception e) {
        e.printStackTrace(System.out);
    } finally {
        if (output != null)
            try {
                output.close();
            } catch (IOException e) {
                e.printStackTrace(System.out);
            }
    }
    return false;
}

From source file:com.ibm.pi.beacon.PIBeaconSensor.java

private static void savePIAPIAdapter(Context context, PIAPIAdapter adapter) {
    ObjectOutputStream adapterStream = null;
    try {/*w w w.ja v a  2  s  . co m*/
        adapterStream = new ObjectOutputStream(
                context.openFileOutput("piapiadapter.data", Context.MODE_PRIVATE));
        adapterStream.writeObject(adapter);
        adapterStream.flush();
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        if (adapterStream != null) {
            try {
                adapterStream.flush();
                adapterStream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}