edu.umn.cs.crisys
Class ASW

java.lang.Object
  |
  +--edu.umn.cs.crisys.RSM
        |
        +--edu.umn.cs.crisys.ASW

Direct Known Subclasses:

AltitudeSwitch

public abstract class ASW

extends RSM

Title: Altitude Switch

Description: The skeleton ASW System for CSCI 5802.

This is an abstract class that defines types, messages and interfaces corresponding to the RSML-e specification of the Altitude Switch. Further it also instantiates the interfaces and provides init() and end() methods that respectively open and close these interfaces.

A concrete implemetation of the Altitude Switch may derive from this class, and override the init(), next() and end() methods. Such classes could in turn call super.init() and super.end() methods to open and close the communication interface channels in one go. A typical implementation, would have its own private data members to store state information and encode the initial conditions, transitions and shutdown operations (if any), in the those three methods.

Copyright: Copyright (c) 2002

Company: University of Minnesota

Inner Class Summary

protected static class	ASW.AltitudeMessage Structure of Altitude message received by the ASW.
static class	ASW.AltitudeQualityType Enumeration type for Altitude Quality.
static class	ASW.ASW_Constants Constants used in the ASW specification.
protected static class	ASW.DOICommandMessage Structue of DOI Command messages sent out by ASW.
protected static class	ASW.DOIStatusMessage Structure of DOI Status message received as input by the ASW.
static class	ASW.DOIStatusType Enumeration type for DOI Status.
protected static class	ASW.EmptyMessage Empty message - no fields.
protected static class	ASW.FaultMessage Structure of Fault message sent out by ASW when a failure is detected.
protected static class	ASW.InhibitMessage Structure of Inhibit message received as input by the ASW.
static class	ASW.InhibitType Enumeration type for Inhibit signal.

Inner classes inherited from class edu.umn.cs.crisys.RSM

RSM.Enum, RSM.ReceiveInterface, RSM.SendInterface

Field Summary

protected RSM.ReceiveInterface	AltitudeMessageInterface This is the object that represents the Altitude message interface.
protected RSM.SendInterface	DOICommandInterface This is the object that represents the DOI Command interface.
protected RSM.ReceiveInterface	DOIStatusMessageInterface This is the object that represents the DOI Status interface.
protected RSM.SendInterface	FaultDetectionInterface This is the object that represents the DOI Command interface.
protected RSM.ReceiveInterface	InhibitMessageInterface This is the object that represents the Inhibit Message interface.
protected RSM.ReceiveInterface	ResetMessageInterface This is the object that represents the Reset Message interface.

Constructor Summary

ASW()

Method Summary

protected void	end() closes all the ASW communication interfaces.
protected void	init() opens up all the ASW interfaces for communication.

Methods inherited from class edu.umn.cs.crisys.RSM

main, next

Methods inherited from class java.lang.Object

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

Field Detail

AltitudeMessageInterface

protected RSM.ReceiveInterface AltitudeMessageInterface

This is the object that represents the Altitude message interface. Derived classes of ASW should access this object's myMessage field to extract the Altitude Message.

DOIStatusMessageInterface

protected RSM.ReceiveInterface DOIStatusMessageInterface

This is the object that represents the DOI Status interface. Derived classes of ASW should access this object's myMessage field to extract the DOI Status Message.

InhibitMessageInterface

protected RSM.ReceiveInterface InhibitMessageInterface

This is the object that represents the Inhibit Message interface. Derived classes of ASW should access this object's myMessage field to extract the Inhibit message.

ResetMessageInterface

protected RSM.ReceiveInterface ResetMessageInterface

This is the object that represents the Reset Message interface. Reset message is an empty message. Whenever, this interface triggers the next state computation, it shall be assumed that a Reset message just arrived.

DOICommandInterface

protected RSM.SendInterface DOICommandInterface

This is the object that represents the DOI Command interface. Derived classes should fill in its myMessage field with command data and call the send() method on this interface, whenever a command is to be sent to the DOI.

FaultDetectionInterface

protected RSM.SendInterface FaultDetectionInterface

This is the object that represents the DOI Command interface. Derived classes should fill in its myMessage field with fault flag and call the send() method on this interface, whenever a fault is to be indicated.

Constructor Detail

ASW

public ASW()

Method Detail

init

protected void init()

opens up all the ASW interfaces for communication. Derived classes may override this method to add other stat-machine initialization code and also call this as super.init() to open the interfaces.

Overrides:

init in class RSM

end

protected void end()

closes all the ASW communication interfaces. Derived classes may override this method to add any further state machine clean-up operations and also call this as super.end() to close all the interfaces.

Overrides:

end in class RSM