Examples of java.util.zip.DeflaterOutputStream

java.util.zip.DeflaterOutputStream
This class implements an output stream filter for compressing data in the "deflate" compression format. It is also used as the basis for other types of compression filters, such as GZIPOutputStream. @see Deflater @version 1.36, 03/13/06 @author David Connelly

     * @exception IOException on error
     */
    public void writeStream(OutputStream os) throws IOException {
        if(deflate) {
            ByteArrayOutputStream b = new ByteArrayOutputStream();
            DeflaterOutputStream dos = new DeflaterOutputStream(b);
            //,new Deflater(Deflater.BEST_COMPRESSION,true));
            buf.writeTo(dos);
            dos.finish();
            dos.close();
            
            // FlatDecode is compatible with the java.util.zip.Deflater class
            os.write("/Filter /FlateDecode\n".getBytes());
            os.write("/Length ".getBytes());
            os.write(Integer.toString(b.size()+1).getBytes());

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    return f.length() / (1000 * 1000);
  }


  double copyFileZipped(File f) throws IOException {
    Socket s = new Socket(host, port);
    OutputStream out = new BufferedOutputStream( new DeflaterOutputStream( s.getOutputStream()), bufferSize);
    ucar.nc2.util.IO.copyFileB(f, out, bufferSize);
    out.close();
    return f.length() / (1000 * 1000);
  }

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    FileInputStream fin = new FileInputStream(filenameIn);
    InputStream in = new BufferedInputStream(fin, 1000);


    FileOutputStream fout = new FileOutputStream(filenameOut);
    OutputStream out = (inflate) ? new DeflaterOutputStream(fout) : new GZIPOutputStream(fout);
    out = new BufferedOutputStream(out, 1000);


    long start = System.currentTimeMillis();
    IO.copyB( in, out, 10000);
    out.flush();

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  }


  // test DeflaterOutputStream - write 1M random floats
  static public void deflateRandom( String filenameOut, boolean buffer) throws IOException {
    FileOutputStream fout = new FileOutputStream(filenameOut);
    OutputStream out = new DeflaterOutputStream(fout);
    if (buffer)
      out = new BufferedOutputStream(out, 1000); // 3X performance by having this !!
    DataOutputStream dout = new DataOutputStream(out);


    Random r = new Random();

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    String filenameOut = "C:/temp/tempFile2.compress2";


    FileInputStream fin = new FileInputStream(filenameIn);
    FileOutputStream fout = new FileOutputStream(filenameOut);
    BufferedOutputStream bout = new BufferedOutputStream(fout, 10 * 1000);
    DeflaterOutputStream out = new DeflaterOutputStream(fout);


    long start = System.currentTimeMillis();
    IO.copyB(fin, out, 10 * 1000);
    double took = .001 * (System.currentTimeMillis() - start);
    System.out.println(" that took = "+took+"sec");

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                    SerializeAdapter adpt = adapters[i];
                    try
                    {
                        if ( runs == 1 || runs == 3 )
                        {
                            DeflaterOutputStream sOut = new GZIPOutputStream( bOut, EJConstants.BUFFERED_STREAM_SIZE )
                                {
                                    {
                                        def.setLevel( EJConstants.DEFAULT_COMPRESSION_LEVEL );
                                    }
                                };
                            adpt.write( new ObjectBean(), sOut );
                            sOut.finish();
                            sOut.close();
                        }
                        else
                        {
                            adpt.write( new ObjectBean(), bOut );
                        }

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      CacheKey key = new CacheKey(perception.typePerception, perception.zoneid, perception.protocolVersion);


      if (!cachedContent.containsKey(key)) {
        logger.debug("Perception not found in cache");
        ByteArrayOutputStream array = new ByteArrayOutputStream();
        DeflaterOutputStream out_stream = new DeflaterOutputStream(array);
        OutputSerializer serializer = new OutputSerializer(out_stream);
        serializer.setProtocolVersion(perception.getProtocolVersion());


        perception.computeStaticPartPerception(serializer);
        out_stream.close();
        byte[] content = array.toByteArray();


        cachedContent.put(key, content);
      } else {
        logger.debug("Perception FOUND in cache");

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  @Override
  public void writeObject(marauroa.common.net.OutputSerializer out) throws IOException {
    super.writeObject(out);


    ByteArrayOutputStream array = new ByteArrayOutputStream();
    DeflaterOutputStream out_stream = new DeflaterOutputStream(array);
    OutputSerializer serializer = new OutputSerializer(out_stream);
    serializer.setProtocolVersion(out.getProtocolVersion());


    int size = contents.size();
    serializer.write(size);


    for (TransferContent content : contents) {
      content.writeFULL(serializer);
    }


    out_stream.close();


    out.write(array.toByteArray());
  }

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   * @throws IOException in case of an input/output error
   * @throws SQLException in case of an database error
   */
  public int storeRPObject(DBTransaction transaction, RPObject object) throws IOException, SQLException {
    ByteArrayOutputStream array = new ByteArrayOutputStream();
    DeflaterOutputStream out_stream = new DeflaterOutputStream(array);
    OutputSerializer serializer = new OutputSerializer(out_stream);
    int protocolVersion = serializer.getProtocolVersion();


    try {
      object.writeObject(serializer, DetailLevel.FULL);
      out_stream.close();
    } catch (IOException e) {
      logger.warn("Error while serializing rpobject: " + object, e);
      throw e;
    }

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    if (!StringChecker.validString(zoneid)) {
      throw new SQLException("Invalid string zoneid=(" + zoneid + ")");
    }


    ByteArrayOutputStream array = new ByteArrayOutputStream();
    DeflaterOutputStream out_stream = new DeflaterOutputStream(array);
    OutputSerializer os = new OutputSerializer(out_stream);


    /* compute how many storable objects exists in zone. */
    int amount = 0;
    for (RPObject object : content) {
      if (object.isStorable()) {
        amount++;
      }
    }


    os.write(amount);


    boolean empty = true;
    for (RPObject object : content) {
      if (object.isStorable()) {
        object.writeObject(os, DetailLevel.FULL);
        empty = false;
      }
    }


    out_stream.close();


    /* Setup the stream for a blob */
    ByteArrayInputStream inStream = new ByteArrayInputStream(array.toByteArray());


    String query;

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