org.jboss.netty.example.factorial

Class FactorialServerHandler

java.lang.Object

org.jboss.netty.channel.SimpleChannelUpstreamHandler

org.jboss.netty.example.factorial.FactorialServerHandler

All Implemented Interfaces:

ChannelHandler, ChannelUpstreamHandler

public class FactorialServerHandler
extends SimpleChannelUpstreamHandler

Handler for a server-side channel. This handler maintains stateful information which is specific to a certain channel using member variables. Therefore, an instance of this handler can cover only one channel. You have to create a new handler instance whenever you create a new channel and insert this handler to avoid a race condition.

Nested Class Summary

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

ChannelHandler.Sharable

Field Summary

Fields

Modifier and Type	Field and Description
private java.math.BigInteger	factorial
private int	lastMultiplier

Constructor Summary

Constructors

Constructor and Description
FactorialServerHandler()

Method Summary

Modifier and Type	Method and Description
void	channelDisconnected(ChannelHandlerContext ctx, ChannelStateEvent e) Invoked when a Channel was disconnected from its remote peer.
void	exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) Invoked when an exception was raised by an I/O thread or a ChannelHandler.
void	handleUpstream(ChannelHandlerContext ctx, ChannelEvent e) Handles the specified upstream event.
void	messageReceived(ChannelHandlerContext ctx, MessageEvent e) Invoked when a message object (e.g: ChannelBuffer) was received from a remote peer.

Methods inherited from class org.jboss.netty.channel.SimpleChannelUpstreamHandler

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

Methods inherited from class java.lang.Object

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

Field Detail

lastMultiplier

private int lastMultiplier

factorial

private java.math.BigInteger factorial

Constructor Detail

FactorialServerHandler

public FactorialServerHandler()

Method Detail

handleUpstream

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

Description copied from class: SimpleChannelUpstreamHandler

Handles the specified upstream event. Down-casts the received upstream event into more meaningful sub-type event and calls an appropriate handler method with the down-casted event.

Specified by:

handleUpstream in interface ChannelUpstreamHandler

Overrides:

handleUpstream in class SimpleChannelUpstreamHandler

Parameters:

ctx - the context object for this handler

e - the upstream event to process or intercept

Throws:

java.lang.Exception

messageReceived

public void messageReceived(ChannelHandlerContext ctx,
                            MessageEvent e)

Description copied from class: SimpleChannelUpstreamHandler

Invoked when a message object (e.g: ChannelBuffer) was received from a remote peer.

Overrides:

messageReceived in class SimpleChannelUpstreamHandler

channelDisconnected

public void channelDisconnected(ChannelHandlerContext ctx,
                                ChannelStateEvent e)

Description copied from class: SimpleChannelUpstreamHandler

Invoked when a Channel was disconnected from its remote peer.

Overrides:

channelDisconnected in class SimpleChannelUpstreamHandler

exceptionCaught

public void exceptionCaught(ChannelHandlerContext ctx,
                            ExceptionEvent e)

Description copied from class: SimpleChannelUpstreamHandler

Invoked when an exception was raised by an I/O thread or a ChannelHandler.

Overrides:

exceptionCaught in class SimpleChannelUpstreamHandler