org.apache.mina.filter.support

类 Zlib

java.lang.Object

org.apache.mina.filter.support.Zlib

public class Zlib
extends java.lang.Object

A helper class for interfacing with the JZlib library. This class acts both as a compressor and decompressor, but only as one at a time. The only flush method supported is Z_SYNC_FLUSH also known as Z_PARTIAL_FLUSH

版本:

$Rev: 629330 $, $Date: 2008-02-20 12:18:28 +0900 (Wed, 20 Feb 2008) $

作者:

The Apache Directory Project (mina-dev@directory.apache.org)

字段概要

字段

限定符和类型	字段和说明
static int	COMPRESSION_DEFAULT
static int	COMPRESSION_MAX
static int	COMPRESSION_MIN
static int	COMPRESSION_NONE
static int	MODE_DEFLATER
static int	MODE_INFLATER

构造器概要

构造器

构造器和说明
Zlib(int compressionLevel, int mode)

方法概要

方法

限定符和类型	方法和说明
void	cleanUp() Cleans up the resources used by the compression library.
ByteBuffer	deflate(ByteBuffer inBuffer)
ByteBuffer	inflate(ByteBuffer inBuffer)

从类继承的方法 java.lang.Object

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

字段详细资料

COMPRESSION_MAX

public static final int COMPRESSION_MAX

COMPRESSION_MIN

public static final int COMPRESSION_MIN

COMPRESSION_NONE

public static final int COMPRESSION_NONE

COMPRESSION_DEFAULT

public static final int COMPRESSION_DEFAULT

MODE_DEFLATER

public static final int MODE_DEFLATER

另请参阅:

常量字段值

MODE_INFLATER

public static final int MODE_INFLATER

另请参阅:

常量字段值

构造器详细资料

Zlib

public Zlib(int compressionLevel,
    int mode)

参数:

compressionLevel - the level of compression that should be used

mode - the mode in which the instance will operate. Can be either of MODE_DEFLATER or MODE_INFLATER

方法详细资料

inflate

public ByteBuffer inflate(ByteBuffer inBuffer)
                   throws java.io.IOException

参数:

inBuffer - the ByteBuffer to be decompressed. The contents of the buffer are transferred into a local byte array and the buffer is flipped and returned intact.

返回:

the decompressed data. If not passed to the MINA methods that release the buffer automatically, the buffer has to be manually released

抛出:

java.io.IOException - if the decompression of the data failed for some reason.

deflate

public ByteBuffer deflate(ByteBuffer inBuffer)
                   throws java.io.IOException

参数:

inBuffer - the buffer to be compressed. The contents are transferred into a local byte array and the buffer is flipped and returned intact.

返回:

the buffer with the compressed data. If not passed to any of the MINA methods that automatically release the buffer, the buffer has to be released manually.

抛出:

java.io.IOException - if the compression of teh buffer failed for some reason

cleanUp

public void cleanUp()

Cleans up the resources used by the compression library.