net.sf.jstuff.integration.compression

Class ZStdCompression

java.lang.Object

net.sf.jstuff.core.compression.AbstractCompression

net.sf.jstuff.integration.compression.ZStdCompression

All Implemented Interfaces:

Compression

public class ZStdCompression
extends AbstractCompression

https://gregoryszorc.com/blog/2017/03/07/better-compression-with-zstandard/ https://code.facebook.com/posts/1658392934479273/smaller-and-faster-data-compression-with-zstandard/ https://quixdb.github.io/squash-benchmark/

Author:

Sebastian Thomschke

Field Summary

Fields

Modifier and Type	Field and Description
static ZStdCompression	INSTANCE
static int	LEVEL_SMALL_AS_DEFLATE_4
static int	LEVEL_SMALL_AS_DEFLATE_6
static int	LEVEL_SMALL_AS_DEFLATE_9

Constructor Summary

Constructors

Constructor and Description
ZStdCompression(int compressionLevel)
ZStdCompression(int compressionLevel, boolean useChecksum)

Method Summary

Modifier and Type	Method and Description
byte[]	compress(byte[] uncompressed)
OutputStream	createCompressingOutputStream(OutputStream output)
InputStream	createDecompressingInputStream(InputStream compressed)
int	decompress(byte[] compressed, byte[] output)
int	getCompressionLevel()
boolean	isUseChecksum()
String	toString()

Methods inherited from class net.sf.jstuff.core.compression.AbstractCompression

compress, compress, createCompressingInputStream, createCompressingInputStream, createDecompressingInputStream, decompress, decompress, decompress, toCloseIgnoring, toCloseIgnoring

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

LEVEL_SMALL_AS_DEFLATE_4

public static final int LEVEL_SMALL_AS_DEFLATE_4

See Also:

Constant Field Values

LEVEL_SMALL_AS_DEFLATE_6

public static final int LEVEL_SMALL_AS_DEFLATE_6

See Also:

Constant Field Values

LEVEL_SMALL_AS_DEFLATE_9

public static final int LEVEL_SMALL_AS_DEFLATE_9

See Also:

Constant Field Values

INSTANCE

public static final ZStdCompression INSTANCE

Constructor Detail

ZStdCompression

public ZStdCompression(int compressionLevel)

ZStdCompression

public ZStdCompression(int compressionLevel,
                       boolean useChecksum)

Method Detail

compress

public byte[] compress(byte[] uncompressed)
                throws IOException

Specified by:

compress in interface Compression

Overrides:

compress in class AbstractCompression

Throws:

IOException

createCompressingOutputStream

public OutputStream createCompressingOutputStream(OutputStream output)
                                           throws IOException

Throws:

IOException

createDecompressingInputStream

public InputStream createDecompressingInputStream(InputStream compressed)
                                           throws IOException

Throws:

IOException

decompress

public int decompress(byte[] compressed,
                      byte[] output)
               throws IOException

Specified by:

decompress in interface Compression

Overrides:

decompress in class AbstractCompression

Throws:

IOException

getCompressionLevel

public int getCompressionLevel()

isUseChecksum

public boolean isUseChecksum()

toString

public String toString()

Overrides:

toString in class Object