org.jboss.netty.handler.codec.oneone

类 OneToOneDecoder

java.lang.Object

org.jboss.netty.handler.codec.oneone.OneToOneDecoder

所有已实现的接口:

ChannelHandler, ChannelUpstreamHandler

直接已知子类:

Base64Decoder, ProtobufDecoder, SpdyHttpDecoder, StringDecoder, WebSocketFrameAggregator, ZlibDecoder

public abstract class OneToOneDecoder
extends java.lang.Object
implements ChannelUpstreamHandler

Transforms a received message into another message. Please note that this decoder must be used with a proper FrameDecoder such as DelimiterBasedFrameDecoder or you must implement proper framing mechanism by yourself if you are using a stream-based transport such as TCP/IP. A typical setup for TCP/IP would be:

 ChannelPipeline pipeline = ...;

 // Decoders
 pipeline.addLast("frameDecoder", new DelimiterBasedFrameDecoder(80, Delimiters.nulDelimiter()));
 pipeline.addLast("customDecoder", new OneToOneDecoder() { ... });

 // Encoder
 pipeline.addLast("customEncoder", new OneToOneEncoder() { ... });
 

嵌套类概要

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

ChannelHandler.Sharable

构造器概要

构造器

限定符	构造器和说明
protected	OneToOneDecoder() Creates a new instance with the current system character set.

方法概要

方法

限定符和类型	方法和说明
protected abstract java.lang.Object	decode(ChannelHandlerContext ctx, Channel channel, java.lang.Object msg) Transforms the specified received message into another message and return the transformed message.
void	handleUpstream(ChannelHandlerContext ctx, ChannelEvent evt) Handles the specified upstream event.

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

OneToOneDecoder

protected OneToOneDecoder()

Creates a new instance with the current system character set.

方法详细资料

handleUpstream

public void handleUpstream(ChannelHandlerContext ctx,
                  ChannelEvent evt)
                    throws java.lang.Exception

从接口复制的说明: ChannelUpstreamHandler

Handles the specified upstream event.

指定者:

handleUpstream 在接口中 ChannelUpstreamHandler

参数:

ctx - the context object for this handler

evt - the upstream event to process or intercept

抛出:

java.lang.Exception

decode

protected abstract java.lang.Object decode(ChannelHandlerContext ctx,
                      Channel channel,
                      java.lang.Object msg)
                                    throws java.lang.Exception

Transforms the specified received message into another message and return the transformed message. Return null if the received message is supposed to be discarded.

抛出:

java.lang.Exception