Package jmri.jmrix.roco.z21

Class Z21TrafficController

java.lang.Object

jmri.jmrix.AbstractMRTrafficController

jmri.jmrix.roco.z21.Z21TrafficController

All Implemented Interfaces:

Z21Interface

public class Z21TrafficController
extends AbstractMRTrafficController
implements Z21Interface

Abstract base for TrafficControllers in a Message/Reply protocol.

Nested Class Summary

Nested classes/interfaces inherited from class jmri.jmrix.AbstractMRTrafficController

AbstractMRTrafficController.RcvNotifier, AbstractMRTrafficController.XmtNotifier

Field Summary

Fields inherited from class jmri.jmrix.AbstractMRTrafficController

allowUnexpectedReply, AUTORETRYSTATE, cmdListeners, connectionError, controller, flushReceiveChars, IDLESTATE, istream, listenerQueue, maxRcvExceptionCount, mCurrentMode, mCurrentState, mLastSender, msgQueue, mWaitBeforePoll, NORMALMODE, NOTIFIEDSTATE, OKSENDMSGSTATE, ostream, POLLSTATE, PROGRAMINGMODE, rcvException, rcvThread, replyInDispatch, threadStopRequest, timeoutFlag, timeouts, WAITMSGREPLYSTATE, WAITREPLYINNORMMODESTATE, WAITREPLYINPROGMODESTATE, waitTimePoll, xmtException, xmtRunnable, xmtThread

Constructor Summary

Constructors

Constructor	Description
Z21TrafficController()

Method Summary

Modifier and Type	Method	Description
void	addz21Listener(Z21Listener l)
void	connectPort(AbstractPortController p)	Make connection to existing PortController object.
void	disconnectPort(AbstractPortController p)	Break connection to existing PortController object.
protected boolean	endOfMessage(AbstractMRReply r)
protected Z21Message	enterNormalMode()	enterProgMode() and enterNormalMode() return any message that needs to be returned to the command station to change modes.
protected Z21Message	enterProgMode()	enterProgMode() and enterNormalMode() return any message that needs to be returned to the command station to change modes.
protected void	forwardMessage(AbstractMRListener client, AbstractMRMessage m)	Implement this to forward a specific message type to a protocol-specific listener interface.
protected void	forwardReply(AbstractMRListener client, AbstractMRReply m)	Implement this to forward a specific Reply type to a protocol-specific listener interface.
protected void	forwardToPort(AbstractMRMessage m, AbstractMRListener reply)	Actually transmits the next message to the port.
void	handleOneIncomingReply()	Handle each reply when complete.
protected Z21Reply	newReply()
protected Z21Message	pollMessage()	Invoked if it's appropriate to do low-priority polling of the command station, this should return the next message to send, or null if the TC should just sleep.
protected Z21Listener	pollReplyHandler()
void	removez21Listener(Z21Listener l)
void	sendz21Message(Z21Message m, Z21Listener reply)	Forward a preformatted message to the actual interface.
boolean	status()
protected void	terminate()
void	terminateThreads()	Terminate the receive and transmit threads.

Methods inherited from class jmri.jmrix.AbstractMRTrafficController

addConsoleListener, addHeaderToOutput, addListener, addTrailerToOutput, canReceive, connectionWarn, distributeReply, enterProgModeDelayTime, getLastSender, getPortName, getSynchronizeRx, handleTimeout, hasTimeouts, lengthOfByteStream, loadChars, newRcvNotifier, notifyMessage, notifyReply, portReadyToSend, portWarn, portWarnTCP, programmerIdle, readByteProtected, receiveLoop, recovery, removeListener, reportReceiveLoopException, resetTimeout, sendMessage, setAllowUnexpectedReply, setSynchronizeRx, transmitLoop, transmitWait, unexpectedReplyStateError, waitForStartOfReply, warnOnTimeout

Methods inherited from class java.lang.Object

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

Constructor Details

Z21TrafficController

public Z21TrafficController()

Method Details

forwardMessage

protected void forwardMessage(AbstractMRListener client,
 AbstractMRMessage m)

Implement this to forward a specific message type to a protocol-specific listener interface. This puts the casting into the concrete class.

Specified by:

forwardMessage in class AbstractMRTrafficController

Parameters:

client - abstract listener.

m - message to forward.

forwardReply

protected void forwardReply(AbstractMRListener client,
 AbstractMRReply m)

Implement this to forward a specific Reply type to a protocol-specific listener interface. This puts the casting into the concrete class.

Specified by:

forwardReply in class AbstractMRTrafficController

pollMessage

protected Z21Message pollMessage()

Invoked if it's appropriate to do low-priority polling of the command station, this should return the next message to send, or null if the TC should just sleep.

Specified by:

pollMessage in class AbstractMRTrafficController

Returns:

Formatted poll message

pollReplyHandler

protected Z21Listener pollReplyHandler()

Specified by:

pollReplyHandler in class AbstractMRTrafficController

enterProgMode

protected Z21Message enterProgMode()

enterProgMode() and enterNormalMode() return any message that needs to be returned to the command station to change modes.

Specified by:

enterProgMode in class AbstractMRTrafficController

Returns:

if no message is needed, you may return null. If the programmerIdle() function returns true, enterNormalMode() is called after a timeout while in IDLESTATE during programming to return the system to normal mode.

See Also:

• enterNormalMode()

enterNormalMode

protected Z21Message enterNormalMode()

enterProgMode() and enterNormalMode() return any message that needs to be returned to the command station to change modes.

Specified by:

enterNormalMode in class AbstractMRTrafficController

Returns:

if no message is needed, you may return null.

See Also:

• enterProgMode()

forwardToPort

protected void forwardToPort(AbstractMRMessage m,
 AbstractMRListener reply)

Actually transmits the next message to the port.

Overrides:

forwardToPort in class AbstractMRTrafficController

Parameters:

m - the message to send

reply - the Listener sending the message, often provided as 'this'

See Also:

• AbstractMRTrafficController.sendMessage(AbstractMRMessage, AbstractMRListener)

status

public boolean status()

Overrides:

status in class AbstractMRTrafficController

connectPort

public void connectPort(AbstractPortController p)

Make connection to existing PortController object.

Overrides:

connectPort in class AbstractMRTrafficController

Parameters:

p - the PortController

disconnectPort

public void disconnectPort(AbstractPortController p)

Break connection to existing PortController object. Once broken, attempts to send via "message" member will fail.

Overrides:

disconnectPort in class AbstractMRTrafficController

Parameters:

p - the PortController

newReply

protected Z21Reply newReply()

Specified by:

newReply in class AbstractMRTrafficController

endOfMessage

protected boolean endOfMessage(AbstractMRReply r)

Specified by:

endOfMessage in class AbstractMRTrafficController

handleOneIncomingReply

public void handleOneIncomingReply()
                            throws IOException

Handle each reply when complete.

(This is public for testing purposes) Runs in the "Receive" thread.

Overrides:

handleOneIncomingReply in class AbstractMRTrafficController

Throws:

IOException - on error.

terminate

protected void terminate()

Overrides:

terminate in class AbstractMRTrafficController

terminateThreads

public void terminateThreads()

Terminate the receive and transmit threads.

This is intended to be used only by testing subclasses.

Overrides:

terminateThreads in class AbstractMRTrafficController

addz21Listener

public void addz21Listener(Z21Listener l)

Specified by:

addz21Listener in interface Z21Interface

removez21Listener

public void removez21Listener(Z21Listener l)

Specified by:

removez21Listener in interface Z21Interface

sendz21Message

public void sendz21Message(Z21Message m,
 Z21Listener reply)

Forward a preformatted message to the actual interface.

Specified by:

sendz21Message in interface Z21Interface