Package org.apache.mina.filter.support
Class Zlib
java.lang.Object
org.apache.mina.filter.support.Zlib
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
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Field Summary
FieldsModifier and TypeFieldDescriptionstatic final int
static final int
static final int
static final int
static final int
static final int
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Constructor Summary
Constructors -
Method Summary
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Field Details
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COMPRESSION_MAX
public static final int COMPRESSION_MAX- See Also:
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COMPRESSION_MIN
public static final int COMPRESSION_MIN- See Also:
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COMPRESSION_NONE
public static final int COMPRESSION_NONE- See Also:
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COMPRESSION_DEFAULT
public static final int COMPRESSION_DEFAULT- See Also:
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MODE_DEFLATER
public static final int MODE_DEFLATER- See Also:
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MODE_INFLATER
public static final int MODE_INFLATER- See Also:
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Constructor Details
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Zlib
public Zlib(int compressionLevel, int mode) - Parameters:
compressionLevel
- the level of compression that should be usedmode
- the mode in which the instance will operate. Can be either of MODE_DEFLATER or MODE_INFLATER
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Method Details
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inflate
public org.apache.mina.common.ByteBuffer inflate(org.apache.mina.common.ByteBuffer inBuffer) throws IOException - Parameters:
inBuffer
- theByteBuffer
to be decompressed. The contents of the buffer are transferred into a local byte array and the buffer is flipped and returned intact.- Returns:
- the decompressed data. If not passed to the MINA methods that release the buffer automatically, the buffer has to be manually released
- Throws:
IOException
- if the decompression of the data failed for some reason.
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deflate
public org.apache.mina.common.ByteBuffer deflate(org.apache.mina.common.ByteBuffer inBuffer) throws IOException - Parameters:
inBuffer
- the buffer to be compressed. The contents are transferred into a local byte array and the buffer is flipped and returned intact.- Returns:
- 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.
- Throws:
IOException
- if the compression of teh buffer failed for some reason
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cleanUp
public void cleanUp()Cleans up the resources used by the compression library.
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