Class ObjectSerializer

src/org/apache/pig/impl/util/ObjectSerializer.java:35–75

import org.apache.commons.io.input.ClassLoaderObjectInputStream;

public class ObjectSerializer {

    public static String serialize(Serializable obj) throws IOException {
        if (obj == null)
            return "";
        try {
            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);
        }
    }

    public static Object deserialize(String str) throws IOException {
        if (str == null || str.length() == 0)
            return null;
        ObjectInputStream objStream = null;
        try {
            ByteArrayInputStream serialObj = new ByteArrayInputStream(decodeBytes(str));
            objStream = new ClassLoaderObjectInputStream(Thread.currentThread().getContextClassLoader(), new InflaterInputStream(serialObj));
            return objStream.readObject();
        } catch (Exception e) {
            throw new IOException("Deserialization error: " + e.getMessage(), e);
        } finally {
            IOUtils.closeQuietly(objStream);
        }
    }

    public static String encodeBytes(byte[] bytes) throws UnsupportedEncodingException {
        return bytes == null ? null : new String(Base64.encodeBase64(bytes), Charset.forName("UTF-8"));
    }

    public static byte[] decodeBytes(String str) throws UnsupportedEncodingException {
        return Base64.decodeBase64(str.getBytes(Charset.forName("UTF-8")));
    }
}