Field Detail

• LOG

  private static final org.apache.commons.logging.Log LOG

Constructor Detail

• Compression

  private Compression()

  Prevent the instantiation of class.

Method Detail

• getClassLoaderForCodec

  private static ClassLoader getClassLoaderForCodec()

  Returns the classloader to load the Codec class from.

• getCompressionAlgorithmByName

  public static Compression.Algorithm getCompressionAlgorithmByName(String compressName)

• getSupportedAlgorithms

  public static String[] getSupportedAlgorithms()

  Get names of supported compression algorithms.

  Returns:

  Array of strings, each represents a supported compression algorithm. Currently, the following compression algorithms are supported.

• decompress

  public static void decompress(byte[] dest,
                int destOffset,
                InputStream bufferedBoundedStream,
                int compressedSize,
                int uncompressedSize,
                Compression.Algorithm compressAlgo)
                         throws IOException

  Decompresses data from the given stream using the configured compression algorithm. It will throw an exception if the dest buffer does not have enough space to hold the decompressed data.

  Parameters:

  dest - the output bytes buffer

  destOffset - start writing position of the output buffer

  bufferedBoundedStream - a stream to read compressed data from, bounded to the exact amount of compressed data

  compressedSize - compressed data size, header not included

  uncompressedSize - uncompressed data size, header not included

  compressAlgo - compression algorithm used

  Throws:

  IOException