io.netty.handler.codec

Class MessageToMessageDecoder<I,O>

java.lang.Object

io.netty.channel.ChannelStateHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.handler.codec.MessageToMessageDecoder<I,O>

All Implemented Interfaces:

ChannelHandler, ChannelInboundHandler, ChannelInboundMessageHandler<I>, ChannelStateHandler

Direct Known Subclasses:

Base64Decoder, ByteArrayDecoder, ProtobufDecoder, StringDecoder

public abstract class MessageToMessageDecoder<I,O>
extends ChannelInboundHandlerAdapter
implements ChannelInboundMessageHandler<I>

Nested Class Summary

Nested classes/interfaces inherited from interface io.netty.channel.ChannelHandler

ChannelHandler.Sharable

Constructor Summary

Constructors

Constructor and Description
MessageToMessageDecoder()

Method Summary

Methods

Modifier and Type	Method and Description
abstract O	decode(ChannelHandlerContext ctx, I msg)
void	inboundBufferUpdated(ChannelHandlerContext ctx)
boolean	isDecodable(Object msg) Returns true if and only if the specified message can be decoded by this decoder.
MessageBuf<I>	newInboundBuffer(ChannelHandlerContext ctx)

Methods inherited from class io.netty.channel.ChannelStateHandlerAdapter

afterAdd, afterRemove, beforeAdd, beforeRemove, channelActive, channelInactive, channelRegistered, channelUnregistered, exceptionCaught, userEventTriggered

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.netty.channel.ChannelStateHandler

channelActive, channelInactive, channelRegistered, channelUnregistered

Methods inherited from interface io.netty.channel.ChannelHandler

afterAdd, afterRemove, beforeAdd, beforeRemove, exceptionCaught, userEventTriggered

Constructor Detail

MessageToMessageDecoder

public MessageToMessageDecoder()

Method Detail

newInboundBuffer

public MessageBuf<I> newInboundBuffer(ChannelHandlerContext ctx)
                               throws Exception

Specified by:

newInboundBuffer in interface ChannelInboundHandler

Specified by:

newInboundBuffer in interface ChannelInboundMessageHandler<I>

Throws:

Exception

inboundBufferUpdated

public void inboundBufferUpdated(ChannelHandlerContext ctx)
                          throws Exception

Specified by:

inboundBufferUpdated in interface ChannelStateHandler

Specified by:

inboundBufferUpdated in class ChannelInboundHandlerAdapter

Throws:

Exception

isDecodable

public boolean isDecodable(Object msg)
                    throws Exception

Returns true if and only if the specified message can be decoded by this decoder.

Parameters:

msg - the message

Throws:

Exception

decode

public abstract O decode(ChannelHandlerContext ctx,
       I msg)
                  throws Exception

Throws:

Exception