org.jboss.netty.handler.codec.serialization

类 ObjectDecoder

java.lang.Object

org.jboss.netty.channel.SimpleChannelUpstreamHandler

org.jboss.netty.handler.codec.frame.FrameDecoder

org.jboss.netty.handler.codec.frame.LengthFieldBasedFrameDecoder

org.jboss.netty.handler.codec.serialization.ObjectDecoder

所有已实现的接口:

ChannelHandler, ChannelUpstreamHandler, LifeCycleAwareChannelHandler

public class ObjectDecoder
extends LengthFieldBasedFrameDecoder

A decoder which deserializes the received ChannelBuffers into Java objects.

Please note that the serialized form this decoder expects is not compatible with the standard ObjectOutputStream. Please use ObjectEncoder or ObjectEncoderOutputStream to ensure the interoperability with this decoder.

嵌套类概要

从接口继承的嵌套类/接口 org.jboss.netty.channel.ChannelHandler

ChannelHandler.Sharable

字段概要

从类继承的字段 org.jboss.netty.handler.codec.frame.FrameDecoder

cumulation, DEFAULT_MAX_COMPOSITEBUFFER_COMPONENTS

构造器概要

构造器

构造器和说明
ObjectDecoder(ClassResolver classResolver) Creates a new decoder whose maximum object size is 1048576 bytes.
ObjectDecoder(int maxObjectSize, ClassResolver classResolver) Creates a new decoder with the specified maximum object size.

方法概要

方法

限定符和类型	方法和说明
protected java.lang.Object	decode(ChannelHandlerContext ctx, Channel channel, ChannelBuffer buffer) Decodes the received packets so far into a frame.
protected ChannelBuffer	extractFrame(ChannelBuffer buffer, int index, int length) Extract a Frame of the specified buffer.

从类继承的方法 org.jboss.netty.handler.codec.frame.FrameDecoder

actualReadableBytes, afterAdd, afterRemove, appendToCumulation, beforeAdd, beforeRemove, channelClosed, channelDisconnected, cleanup, decodeLast, exceptionCaught, getMaxCumulationBufferCapacity, getMaxCumulationBufferComponents, internalBuffer, isUnfold, messageReceived, newCumulationBuffer, replace, setMaxCumulationBufferCapacity, setMaxCumulationBufferComponents, setUnfold, unfoldAndFireMessageReceived, updateCumulation

从类继承的方法 org.jboss.netty.channel.SimpleChannelUpstreamHandler

channelBound, channelConnected, channelInterestChanged, channelOpen, channelUnbound, childChannelClosed, childChannelOpen, handleUpstream, writeComplete

从类继承的方法 java.lang.Object

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

构造器详细资料

ObjectDecoder

public ObjectDecoder(ClassResolver classResolver)

Creates a new decoder whose maximum object size is 1048576 bytes. If the size of the received object is greater than 1048576 bytes, a StreamCorruptedException will be raised.

参数:

classResolver - the ClassResolver to use for this decoder

ObjectDecoder

public ObjectDecoder(int maxObjectSize,
             ClassResolver classResolver)

Creates a new decoder with the specified maximum object size.

参数:

maxObjectSize - the maximum byte length of the serialized object. if the length of the received object is greater than this value, StreamCorruptedException will be raised.

classResolver - the ClassResolver which will load the class of the serialized object

方法详细资料

decode

protected java.lang.Object decode(ChannelHandlerContext ctx,
                      Channel channel,
                      ChannelBuffer buffer)
                           throws java.lang.Exception

从类复制的说明: FrameDecoder

Decodes the received packets so far into a frame. If an sub-class wants to extract a frame out of the buffer it should use the FrameDecoder.extractFrame(ChannelBuffer, int, int) method, to make optimizations easier later.

覆盖:

decode 在类中 LengthFieldBasedFrameDecoder

参数:

ctx - the context of this handler

channel - the current channel

buffer - the cumulative buffer of received packets so far. Note that the buffer might be empty, which means you should not make an assumption that the buffer contains at least one byte in your decoder implementation.

返回:

the decoded frame if a full frame was received and decoded. null if there's not enough data in the buffer to decode a frame.

抛出:

java.lang.Exception

extractFrame

protected ChannelBuffer extractFrame(ChannelBuffer buffer,
                         int index,
                         int length)

从类复制的说明: FrameDecoder

Extract a Frame of the specified buffer. By default this implementation will return a extract the sub-region of the buffer and create a new one. If an sub-class want to extract a frame from the buffer it should use this method by default. Be sure that this method MUST not modify the readerIndex of the given buffer

覆盖:

extractFrame 在类中 FrameDecoder