Package com.semedy.reasoner.utils

Class Compressor

java.lang.Object

com.semedy.reasoner.utils.Compressor

public class Compressor
extends Object

Provides methods for compressing and decompressing byte arrays

Author:

angele

Constructor Summary

Constructors

Constructor	Description
Compressor()

Method Summary

Modifier and Type	Method	Description
byte[]	compressGZIP(byte[] data, int off, int len)	Compress data out of a byte array at offset off and length len
byte[]	compressLZ4(byte[] data)	Compress in LZ4
byte[]	decompressGZIP(byte[] data, int originallength)	Decompress gzipped data
void	decompressLZ4(byte[] compressedData, byte[] restored)	Decompress LZ4
byte[]	decompressLZ4(byte[] compressedData, int originallength)	Decompress LZ4

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Compressor

public Compressor()

Method Details

decompressGZIP

public byte[] decompressGZIP(byte[] data,
 int originallength)
                      throws IOException

Decompress gzipped data

Parameters:

data - , data to be decompressed

originallength - , the length of uncompressed data

Returns:

decompressed data

Throws:

IOException

compressLZ4

public byte[] compressLZ4(byte[] data)
                   throws IOException

Compress in LZ4

Parameters:

data - , data

Returns:

compressed data

Throws:

IOException

decompressLZ4

public byte[] decompressLZ4(byte[] compressedData,
 int originallength)
                     throws IOException

Decompress LZ4

Parameters:

compressedData - , array containing compressed data

originallength - , the length of uncompressed data

Returns:

decompressed data

Throws:

IOException

decompressLZ4

public void decompressLZ4(byte[] compressedData,
 byte[] restored)
                   throws IOException

Decompress LZ4

Parameters:

compressedData - , array containing compressed data

originallength - , the length of uncompressed data

Throws:

IOException

compressGZIP

public byte[] compressGZIP(byte[] data,
 int off,
 int len)
                    throws IOException

Compress data out of a byte array at offset off and length len

Parameters:

data - , data

off - , offset in data

len - , number of bytes to compress

Returns:

compressed data

Throws:

IOException