Package org.iq80.leveldb.util

Class Snappy

java.lang.Object

org.iq80.leveldb.util.Snappy

public final class Snappy
extends Object

A Snappy abstraction which attempts uses the iq80 implementation and falls back to the xerial Snappy implementation it cannot be loaded. You can change the load order by setting the 'leveldb.snappy' system property. Example:

-Dleveldb.snappy=xerial,iq80

The system property can also be configured with the name of a class which implements the Snappy.SPI interface.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Snappy.IQ80Snappy
static interface	Snappy.SPI
static class	Snappy.XerialSnappy

Field Summary

Fields

Modifier and Type	Field	Description
private static final Snappy.SPI	SNAPPY

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Snappy()

Method Summary

Modifier and Type	Method	Description
static boolean	available()
static int	compress(byte[] input, int inputOffset, int length, byte[] output, int outputOffset)
static byte[]	compress(String text)
static int	maxCompressedLength(int length)
static void	uncompress(byte[] input, int inputOffset, int length, byte[] output, int outputOffset)
static void	uncompress(ByteBuffer compressed, ByteBuffer uncompressed)

Methods inherited from class java.lang.Object

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

Field Details

SNAPPY

private static final Snappy.SPI SNAPPY

Constructor Details

Snappy

private Snappy()

Method Details

available

public static boolean available()

uncompress

public static void uncompress(ByteBuffer compressed,
 ByteBuffer uncompressed)
                       throws IOException

Throws:

IOException

uncompress

public static void uncompress(byte[] input,
 int inputOffset,
 int length,
 byte[] output,
 int outputOffset)
                       throws IOException

Throws:

IOException

compress

public static int compress(byte[] input,
 int inputOffset,
 int length,
 byte[] output,
 int outputOffset)
                    throws IOException

Throws:

IOException

compress

public static byte[] compress(String text)
                       throws IOException

Throws:

IOException

maxCompressedLength

public static int maxCompressedLength(int length)