xal.ca

Class MonitorCache

java.lang.Object

xal.ca.MonitorCache

public class MonitorCache
extends java.lang.Object

Connect to, monitor and cache a channel's monitor events.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	MonitorCache.ConnectionEventHandler Handle connection events
protected class	MonitorCache.MonitorEventHandler Handle monitor events

Field Summary

Fields

Modifier and Type	Field and Description
protected Channel	_channel the channel to wrap
protected ConnectionListener	_connectionHandler listener to handle connection events
protected IEventSinkValTime	_eventProxy Proxy which forwards monitor events to registered listeners.
protected ChannelTimeRecord	_latestRecord latest monitor event
protected MessageCenter	_messageCenter Message center for dispatching monitor events to registered listeners.
protected Monitor	_monitor a channel monitor
protected IEventSinkValTime	_monitorEventHandler listener to handle monitor events

Constructor Summary

Constructors

Constructor and Description
MonitorCache(Channel channel) Constructor

Method Summary

Modifier and Type	Method and Description
void	addMonitorListener(IEventSinkValTime listener) Register the listener to receive IEventSinkValTime events from the monitor
void	dispose() Dispose of this wrapper's resources.
Channel	getChannel() Get the channel.
ChannelTimeRecord	getLatestRecord() Get the latest record.
boolean	isConnected() Determine if the channel is connected.
void	removeMonitorListener(IEventSinkValTime listener) Remove the listener from receiving IEventSinkValTime events from this monitor
void	requestMonitor() Request a connection and start the monitor upon connection.

Methods inherited from class java.lang.Object

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

Field Detail

_messageCenter

protected final MessageCenter _messageCenter

Message center for dispatching monitor events to registered listeners.

_eventProxy

protected final IEventSinkValTime _eventProxy

Proxy which forwards monitor events to registered listeners.

_channel

protected final Channel _channel

the channel to wrap

_connectionHandler

protected final ConnectionListener _connectionHandler

listener to handle connection events

_monitorEventHandler

protected final IEventSinkValTime _monitorEventHandler

listener to handle monitor events

_monitor

protected Monitor _monitor

a channel monitor

_latestRecord

protected volatile ChannelTimeRecord _latestRecord

latest monitor event

Constructor Detail

MonitorCache

public MonitorCache(Channel channel)

Constructor

Parameters:

channel - to monitor

Method Detail

dispose

public void dispose()

Dispose of this wrapper's resources.

addMonitorListener

public void addMonitorListener(IEventSinkValTime listener)

Register the listener to receive IEventSinkValTime events from the monitor

Parameters:

listener - to receive events

removeMonitorListener

public void removeMonitorListener(IEventSinkValTime listener)

Remove the listener from receiving IEventSinkValTime events from this monitor

Parameters:

listener - to remove from receiving events

requestMonitor

public void requestMonitor()

Request a connection and start the monitor upon connection.

getChannel

public Channel getChannel()

Get the channel.

Returns:

wrapped channel

isConnected

public boolean isConnected()

Determine if the channel is connected.

Returns:

true if the channel is connected and false if not

getLatestRecord

public ChannelTimeRecord getLatestRecord()

Get the latest record.

Returns:

latest record