org.activeio.adapter
Class AsyncChannelToClientRequestChannel

java.lang.Object
  org.activeio.adapter.AsyncChannelToClientRequestChannel

All Implemented Interfaces:

Channel, Disposable, RequestChannel, Service

public final class AsyncChannelToClientRequestChannel
extends Object
implements RequestChannel

Creates a RequestChannel out of a SyncChannel. Does not support handing requests. It can only be used to send requests.

Version:

$Revision$

Field Summary

Fields inherited from interface org.activeio.Service

NO_WAIT_TIMEOUT, WAIT_FOREVER_TIMEOUT

Constructor Summary

AsyncChannelToClientRequestChannel(SyncChannel next)

Method Summary

void	dispose() This method should not throw any exceptions.
RequestListener	getRequestListener()
Object	narrow(Class target) Since a Channel may be composed from a chain of other Channel obejcts, this method allows you to query the chain for the specified interface.
Packet	request(Packet request, long timeout) Used to send a packet of information going 'down' the channel and wait for it's reponse 'up' packet.
void	setRequestListener(RequestListener requestListener) Registers the RequestListener that the protcol will use to deliver request packets comming 'up' the channel.
void	start() Starts the channel.
void	stop(long timeout) Stops the channel.

Methods inherited from class java.lang.Object

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

Constructor Detail

AsyncChannelToClientRequestChannel

public AsyncChannelToClientRequestChannel(SyncChannel next)

Method Detail

request

public Packet request(Packet request,
                      long timeout)
               throws IOException

Description copied from interface: RequestChannel

Used to send a packet of information going 'down' the channel and wait for it's reponse 'up' packet. This method blocks until the response packet is received or the operation experiences a timeout.

Specified by:

request in interface RequestChannel

Returns:

the respnse packet or null if the timeout occured.

Throws:

IOException

setRequestListener

public void setRequestListener(RequestListener requestListener)
                        throws IOException

Description copied from interface: RequestChannel

Registers the RequestListener that the protcol will use to deliver request packets comming 'up' the channel.

Specified by:

setRequestListener in interface RequestChannel

Throws:

IOException

getRequestListener

public RequestListener getRequestListener()

Specified by:

getRequestListener in interface RequestChannel

Returns:

the registered RequestListener

narrow

public Object narrow(Class target)

Description copied from interface: Channel

Since a Channel may be composed from a chain of other Channel obejcts, this method allows you to query the chain for the specified interface. The first Channel in the chain the implments the requested interface will be return an implementing object. If no Channel in the chain implements the requested class, then null is returned.

Specified by:

narrow in interface Channel

dispose

public void dispose()

Description copied from interface: Disposable

This method should not throw any exceptions. Cleaning up a Disposable object should be easy of an end user therefore do not make him have to handle an Exception.

Specified by:

dispose in interface Disposable

start

public void start()
           throws IOException

Description copied from interface: Service

Starts the channel. Once started, the channel is in the running state.

Specified by:

start in interface Service

Throws:

IOException

stop

public void stop(long timeout)
          throws IOException

Description copied from interface: Service

Stops the channel. Once stopped, the channel is in the stopped state.

Specified by:

stop in interface Service

Parameters:

timeout - The amount of time the channel is allowed to take to gracefully stop. If the timeout is exceeded, the channel should do a forcefull stop.

Throws:

IOException