xal.smf.scada

Class ScadaCheckConnect.ConnectionMonitor

java.lang.Object

xal.smf.scada.ScadaCheckConnect.ConnectionMonitor

All Implemented Interfaces:

ConnectionListener

Enclosing class:

ScadaCheckConnect

public static final class ScadaCheckConnect.ConnectionMonitor
extends java.lang.Object
implements ConnectionListener

This class is used is a Channel Access connection monitor. When Channel Access calls to report a channel connection, the monitor removes the channel from the list of channels requesting confirmation (this list was passed in at construction time).

Since:

Feb 4, 2011

Constructor Summary

Constructors

Constructor and Description
ConnectionMonitor(Channel chnFld, ScadaCheckConnect.TestChannelList lstReqs) Create a new ConnectionMonitor object for monitoring the given channel.

Method Summary

Modifier and Type	Method and Description
void	connectionDropped(Channel channel) Nothing really to do here - as a precaution we remove ourself from the channel's set of connection listeners.
void	connectionMade(Channel channel) The requested connection was made.
protected void	finalize() Just in case, we remove all the links.
Channel	getChannel() Get the channel this monitor is servicing

Methods inherited from class java.lang.Object

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

Constructor Detail

ConnectionMonitor

public ConnectionMonitor(Channel chnFld,
                         ScadaCheckConnect.TestChannelList lstReqs)

Create a new ConnectionMonitor object for monitoring the given channel. The list of all channels being monitored is all passed so that the given channel can be removed upon confirmation.

Parameters:

chnFld - EPICS channel connecting to a field within the parameter set.

lstReqs - list of channels that have been requested to connect

Since:

Feb 4, 2011

Method Detail

finalize

protected void finalize()
                 throws java.lang.Throwable

Just in case, we remove all the links.

Overrides:

finalize in class java.lang.Object

Throws:

java.lang.Throwable

Since:

Mar 4, 2011

See Also:

Object.finalize()

getChannel

public Channel getChannel()

Get the channel this monitor is servicing

Returns:

channel that this monitor is connected to

connectionMade

public void connectionMade(Channel channel)

The requested connection was made. Consequently,
⋅ We remove ourself from the channel's set of connection listeners
⋅ We remove the channel from the list of open requests

Specified by:

connectionMade in interface ConnectionListener

Parameters:

channel - The channel which has been connected.

Since:

Feb 4, 2011

See Also:

ConnectionListener.connectionMade(xal.ca.Channel)

connectionDropped

public void connectionDropped(Channel channel)

Nothing really to do here - as a precaution we remove ourself from the channel's set of connection listeners. We should have been removed when the connection request was fulfilled. However, something wrong could have happened.

Specified by:

connectionDropped in interface ConnectionListener

Parameters:

channel - The channel which has been disconnected.

Since:

Feb 4, 2011

See Also:

ConnectionListener.connectionDropped(xal.ca.Channel)