Example usage for java.util.zip Deflater Deflater

Introduction

In this page you can find the example usage for java.util.zip Deflater Deflater.

Prototype

public Deflater(int level) 

Source Link

Document

Creates a new compressor using the specified compression level.

Usage

From source file:Main.java

private static byte[] compressBytesInflateDeflate(byte[] inBytes) {
    Deflater deflater = new Deflater(Deflater.BEST_SPEED);
    deflater.setInput(inBytes);/* w  ww. jav a  2  s.  c  o  m*/
    ByteArrayOutputStream bos = new ByteArrayOutputStream(inBytes.length);
    deflater.finish();
    byte[] buffer = new byte[1024 * 8];
    while (!deflater.finished()) {
        int count = deflater.deflate(buffer);
        bos.write(buffer, 0, count);
    }
    byte[] output = bos.toByteArray();
    return output;
}

---

From source file:Main.java

public static byte[] compress(byte[] data) throws IOException {
    Deflater compresser = new Deflater(Deflater.BEST_COMPRESSION);
    compresser.setInput(data);//from   w  w w.  j  av a2  s.com
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream(data.length);
    compresser.finish();
    byte[] buffer = new byte[1024];
    while (!compresser.finished()) {
        int count = compresser.deflate(buffer);
        outputStream.write(buffer, 0, count);
    }
    compresser.end();
    outputStream.close();
    return outputStream.toByteArray();
}

---

From source file:zipB64.java

protected static String encodeMessage(String messageStr) {
    try {/* w w w.j a v  a2  s.  c  o  m*/
        ByteArrayOutputStream bytesOut = new ByteArrayOutputStream();
        Deflater deflater = new Deflater(Deflater.DEFLATED);
        DeflaterOutputStream deflaterStream = new DeflaterOutputStream(bytesOut, deflater);
        deflaterStream.write(messageStr.getBytes("UTF-8"));
        deflaterStream.finish();

        Base64 b = new Base64(-1);
        return new String(b.encode(bytesOut.toByteArray()));
    } catch (Exception e) {
        return "crotte";
    }
}

---

From source file:org.apache.pig.impl.util.ObjectSerializer.java

public static String serialize(Serializable obj) throws IOException {
    if (obj == null)
        return "";
    try {/*from www .  j  ava 2  s.  com*/
        ByteArrayOutputStream serialObj = new ByteArrayOutputStream();
        Deflater def = new Deflater(Deflater.BEST_COMPRESSION);
        ObjectOutputStream objStream = new ObjectOutputStream(new DeflaterOutputStream(serialObj, def));
        objStream.writeObject(obj);
        objStream.close();
        return encodeBytes(serialObj.toByteArray());
    } catch (Exception e) {
        throw new IOException("Serialization error: " + e.getMessage(), e);
    }
}

---

From source file:rascal.storage.loose.LooseStorageNodeWritableChannel.java

private void initTempObjectFileChannel() throws IOException {
    Deflater deflater = new Deflater(storageConfiguration.getLooseCompressionLevel());
    DeflaterOutputStream output = new DeflaterOutputStream(new FileOutputStream(tempObjectFile), deflater);
    tempObjectFileChannel = Channels.newChannel(output);
}

---

From source file:rascal.storage.loose.AbstractLooseStorageNodeChannelIntegrationTest.java

@Before
public void setUpTestData() throws IOException {
    testData = RandomTestDataUtils.createRandomData();
    ByteArrayOutputStream outBuffer = new ByteArrayOutputStream();
    DeflaterOutputStream out = new DeflaterOutputStream(outBuffer, new Deflater(DEFLATED_DATA_COMPRESS_LEVER));
    out.write(testData);/*from   w  ww  . ja v  a2 s .com*/
    out.close();
    deflatedTestData = outBuffer.toByteArray();
}

---

From source file:org.apache.tez.common.TezUtils.java

/**
 * Convert a Configuration to compressed ByteString using Protocol buffer
 *
 * @param conf/*from  w w  w. j  a  v  a  2  s .  co m*/
 *          : Configuration to be converted
 * @return PB ByteString (compressed)
 * @throws java.io.IOException
 */
public static ByteString createByteStringFromConf(Configuration conf) throws IOException {
    Preconditions.checkNotNull(conf, "Configuration must be specified");
    ByteString.Output os = ByteString.newOutput();
    DeflaterOutputStream compressOs = new DeflaterOutputStream(os, new Deflater(Deflater.BEST_SPEED));
    try {
        writeConfInPB(compressOs, conf);
    } finally {
        if (compressOs != null) {
            compressOs.close();
        }
    }
    return os.toByteString();
}

---

From source file:com.uber.hoodie.common.HoodieJsonPayload.java

private byte[] compressData(String jsonData) throws IOException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    Deflater deflater = new Deflater(Deflater.BEST_COMPRESSION);
    DeflaterOutputStream dos = new DeflaterOutputStream(baos, deflater, true);
    try {/*  w w  w.  ja  v a2s . c  o  m*/
        dos.write(jsonData.getBytes());
    } finally {
        dos.flush();
        dos.close();
        // Its important to call this.
        // Deflater takes off-heap native memory and does not release until GC kicks in
        deflater.end();
    }
    return baos.toByteArray();
}

---

From source file:NCDSearch.NCDSearch.java

public double NCD(byte[] file, byte[] target, int compression) {

    Deflater compressor = new Deflater(compression);

    byte[] outputtrash = new byte[file.length + target.length];

    int bothcompressedsize;
    int filecompressedsize;
    int targetcompressedsize;

    byte[] both = new byte[file.length + target.length];
    for (int i = 0; i < file.length; i++) {
        both[i] = file[i];/*www  .j  ava2s.com*/
    }
    for (int i = 0; i < target.length; i++) {
        both[i + file.length] = target[i];
    }

    compressor.setInput(file);
    compressor.finish();
    filecompressedsize = compressor.deflate(outputtrash);
    compressor.reset();
    compressor.setInput(target);
    compressor.finish();
    targetcompressedsize = compressor.deflate(outputtrash);
    compressor.reset();
    compressor.setInput(both);
    compressor.finish();
    bothcompressedsize = compressor.deflate(outputtrash);
    compressor.reset();

    return (double) (bothcompressedsize - filecompressedsize) / (double) targetcompressedsize;
}

---

From source file:org.fastcatsearch.ir.document.DocumentWriter.java

public DocumentWriter(SchemaSetting schemaSetting, File dir, IndexConfig indexConfig)
        throws IOException, IRException {

    compressor = new Deflater(Deflater.BEST_SPEED);
    fields = schemaSetting.getFieldSettingList();

    docOutput = new BufferedFileOutput(dir, IndexFileNames.docStored);
    positionOutput = new BufferedFileOutput(dir, IndexFileNames.docPosition);

    fbaos = new BytesDataOutput(3 * 1024 * 1024); // 3Mb .
    workingBuffer = new byte[1024];
    docOutput.writeInt(0); // document count

    inflaterOutput = new ByteRefArrayOutputStream(INFLATE_BUFFER_INIT_SIZE);

}

---

• «
• 1
• 2
• 3
• 4
• »