Class ZlibDecoder
- java.lang.Object
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- org.jboss.netty.handler.codec.oneone.OneToOneDecoder
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- org.jboss.netty.handler.codec.compression.ZlibDecoder
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- All Implemented Interfaces:
ChannelHandler
,ChannelUpstreamHandler
public class ZlibDecoder extends OneToOneDecoder
Decompresses aChannelBuffer
using the deflate algorithm.
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Nested Class Summary
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Nested classes/interfaces inherited from interface org.jboss.netty.channel.ChannelHandler
ChannelHandler.Sharable
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Constructor Summary
Constructors Constructor Description ZlibDecoder()
Creates a new instance with the default wrapper (ZlibWrapper.ZLIB
).ZlibDecoder(byte[] dictionary)
Creates a new instance with the specified preset dictionary.ZlibDecoder(ZlibWrapper wrapper)
Creates a new instance with the specified wrapper.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected Object
decode(ChannelHandlerContext ctx, Channel channel, Object msg)
Transforms the specified received message into another message and return the transformed message.boolean
isClosed()
Returnstrue
if and only if the end of the compressed stream has been reached.-
Methods inherited from class org.jboss.netty.handler.codec.oneone.OneToOneDecoder
handleUpstream
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Constructor Detail
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ZlibDecoder
public ZlibDecoder()
Creates a new instance with the default wrapper (ZlibWrapper.ZLIB
).- Throws:
CompressionException
- if failed to initialize zlib
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ZlibDecoder
public ZlibDecoder(ZlibWrapper wrapper)
Creates a new instance with the specified wrapper.- Throws:
CompressionException
- if failed to initialize zlib
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ZlibDecoder
public ZlibDecoder(byte[] dictionary)
Creates a new instance with the specified preset dictionary. The wrapper is alwaysZlibWrapper.ZLIB
because it is the only format that supports the preset dictionary.- Throws:
CompressionException
- if failed to initialize zlib
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Method Detail
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isClosed
public boolean isClosed()
Returnstrue
if and only if the end of the compressed stream has been reached.
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decode
protected Object decode(ChannelHandlerContext ctx, Channel channel, Object msg) throws Exception
Description copied from class:OneToOneDecoder
Transforms the specified received message into another message and return the transformed message. Returnnull
if the received message is supposed to be discarded.- Specified by:
decode
in classOneToOneDecoder
- Throws:
Exception
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