org.jboss.netty.example.factorial

Class NumberEncoder

java.lang.Object

org.jboss.netty.handler.codec.oneone.OneToOneEncoder

org.jboss.netty.example.factorial.NumberEncoder

All Implemented Interfaces:

ChannelDownstreamHandler, ChannelHandler

public class NumberEncoder
extends OneToOneEncoder

Encodes a Number into the binary representation prepended with a magic number ('F' or 0x46) and a 32-bit length prefix. For example, 42 will be encoded to { 'F', 0, 0, 0, 1, 42 }.

Nested Class Summary

Nested classes/interfaces inherited from interface org.jboss.netty.channel.ChannelHandler

ChannelHandler.Sharable

Constructor Summary

Constructors

Constructor and Description
NumberEncoder()

Method Summary

Modifier and Type	Method and Description
protected Object	encode(ChannelHandlerContext ctx, Channel channel, Object msg) Transforms the specified message into another message and return the transformed message.

Methods inherited from class org.jboss.netty.handler.codec.oneone.OneToOneEncoder

doEncode, handleDownstream

Methods inherited from class java.lang.Object

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

Constructor Detail

NumberEncoder

public NumberEncoder()

Method Detail

encode

protected Object encode(ChannelHandlerContext ctx,
                        Channel channel,
                        Object msg)
                 throws Exception

Description copied from class: OneToOneEncoder

Transforms the specified message into another message and return the transformed message. Note that you can not return null, unlike you can in OneToOneDecoder.decode(ChannelHandlerContext, Channel, Object); you must return something, at least ChannelBuffers.EMPTY_BUFFER.

Specified by:

encode in class OneToOneEncoder

Throws:

Exception