Package ptolemy.domains.de.lib

Class VariableDelay

java.lang.Object

ptolemy.kernel.util.NamedObj

ptolemy.kernel.InstantiableNamedObj

ptolemy.kernel.Entity<T>

ptolemy.kernel.ComponentEntity<T>

ptolemy.actor.AtomicActor<TypedIOPort>

ptolemy.actor.TypedAtomicActor

ptolemy.actor.lib.Transformer

ptolemy.domains.de.lib.VariableDelay

All Implemented Interfaces:

java.lang.Cloneable, Actor, Executable, FiringsRecordable, Initializable, TypedActor, Changeable, Debuggable, DebugListener, Derivable, Instantiable, ModelErrorHandler, MoMLExportable, Moveable, Nameable

@Deprecated
public class VariableDelay
extends Transformer

Deprecated.

Use ptolemy.actor.lib.TimeDelay.

This actor delays its inputs by a variable delay. It works in a similar way as the TimedDelay actor except that the amount of time delayed is specified by an incoming token through the delay port (a parameter port). If the delay is zero, then this actor only increments the microstep, not the model time. If a negative delay is specified, then an exception is thrown.

Since:

Ptolemy II 1.0

Version:

$Id$

Author:

Jie Liu, Haiyang Zheng

See Also:

TimedDelay

Pt.AcceptedRating:

Yellow (hyzheng)

Pt.ProposedRating:

Green (hyzheng)

Nested Class Summary

Nested classes/interfaces inherited from class ptolemy.kernel.Entity

Entity.ContainedObjectsIterator

Field Summary

Fields

Modifier and Type	Field	Description
protected Token	_currentOutput	Deprecated. Current output.
protected double	_delay	Deprecated. The amount of delay.
protected CalendarQueue	_delayedOutputTokens	Deprecated. A local event queue to store the delayed output tokens.
PortParameter	delay	Deprecated. The amount specifying delay.

Fields inherited from class ptolemy.actor.lib.Transformer

input, output

Fields inherited from class ptolemy.actor.TypedAtomicActor

_typesValid

Fields inherited from class ptolemy.actor.AtomicActor

_actorFiringListeners, _initializables, _notifyingActorFiring, _stopRequested

Fields inherited from class ptolemy.kernel.util.NamedObj

_changeListeners, _changeLock, _changeRequests, _debugging, _debugListeners, _deferChangeRequests, _elementName, _isPersistent, _verbose, _workspace, ATTRIBUTES, CLASSNAME, COMPLETE, CONTENTS, DEEP, FULLNAME, LINKS

Fields inherited from interface ptolemy.actor.Executable

COMPLETED, NOT_READY, STOP_ITERATING

Constructor Summary

Constructors

Constructor	Description
VariableDelay(CompositeEntity container, java.lang.String name)	Deprecated. Construct an actor with the specified container and name.

Method Summary

Modifier and Type	Method	Description
void	attributeChanged(Attribute attribute)	Deprecated. If the attribute is delay, then ensure that the value is non-negative.
java.lang.Object	clone(Workspace workspace)	Deprecated. Clone the actor into the specified workspace.
void	declareDelayDependency()	Deprecated. Declare that the output does not depend on the input and delay in a firing.
void	fire()	Deprecated. Update the delay parameter from the delay port and ensure the delay is not negative.
void	initialize()	Deprecated. Initialize the states of this actor.
boolean	isStrict()	Deprecated. Return false indicating that this actor can be fired even if the inputs are unknown.
boolean	postfire()	Deprecated. Process the current input if it has not been processed.

Methods inherited from class ptolemy.actor.TypedAtomicActor

_containedTypeConstraints, _customTypeConstraints, _defaultTypeConstraints, _fireAt, _fireAt, attributeTypeChanged, clone, isBackwardTypeInferenceEnabled, newPort, typeConstraintList, typeConstraints

Methods inherited from class ptolemy.actor.AtomicActor

_actorFiring, _actorFiring, _declareDelayDependency, addActorFiringListener, addInitializable, connectionsChanged, createReceivers, getCausalityInterface, getDirector, getExecutiveDirector, getManager, inputPortList, isFireFunctional, iterate, newReceiver, outputPortList, prefire, preinitialize, pruneDependencies, recordFiring, removeActorFiringListener, removeDependency, removeInitializable, setContainer, stop, stopFire, terminate, wrapup

Methods inherited from class ptolemy.kernel.ComponentEntity

_adjustDeferrals, _checkContainer, _getContainedObject, _propagateExistence, getContainer, instantiate, isAtomic, isOpaque, moveDown, moveToFirst, moveToIndex, moveToLast, moveUp, propagateExistence, setName

Methods inherited from class ptolemy.kernel.Entity

_addPort, _description, _exportMoMLContents, _removePort, _validateSettables, connectedPortList, connectedPorts, containedObjectsIterator, getAttribute, getPort, getPorts, linkedRelationList, linkedRelations, portList, removeAllPorts, setClassDefinition, uniqueName

Methods inherited from class ptolemy.kernel.InstantiableNamedObj

_setParent, exportMoML, getChildren, getElementName, getParent, getPrototypeList, isClassDefinition, isWithinClassDefinition

Methods inherited from class ptolemy.kernel.util.NamedObj

_addAttribute, _adjustOverride, _attachText, _cloneFixAttributeFields, _containedDecorators, _copyChangeRequestList, _debug, _debug, _debug, _debug, _debug, _executeChangeRequests, _getIndentPrefix, _isMoMLSuppressed, _markContentsDerived, _notifyHierarchyListenersAfterChange, _notifyHierarchyListenersBeforeChange, _propagateValue, _removeAttribute, _splitName, _stripNumericSuffix, addChangeListener, addDebugListener, addHierarchyListener, attributeDeleted, attributeList, attributeList, decorators, deepContains, depthInHierarchy, description, description, event, executeChangeRequests, exportMoML, exportMoML, exportMoML, exportMoML, exportMoMLPlain, getAttribute, getAttributes, getChangeListeners, getClassName, getDecoratorAttribute, getDecoratorAttributes, getDerivedLevel, getDerivedList, getDisplayName, getFullName, getModelErrorHandler, getName, getName, getSource, handleModelError, isDeferringChangeRequests, isOverridden, isPersistent, lazyContainedObjectsIterator, message, notifyOfNameChange, propagateValue, propagateValues, removeAttribute, removeChangeListener, removeDebugListener, removeHierarchyListener, requestChange, setClassName, setDeferringChangeRequests, setDerivedLevel, setDisplayName, setModelErrorHandler, setPersistent, setSource, sortContainedObjects, toplevel, toString, validateSettables, workspace

Methods inherited from class java.lang.Object

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

Methods inherited from interface ptolemy.actor.Actor

createReceivers, getCausalityInterface, getDirector, getExecutiveDirector, getManager, inputPortList, newReceiver, outputPortList

Methods inherited from interface ptolemy.kernel.util.Derivable

getDerivedLevel, getDerivedList, propagateValue

Methods inherited from interface ptolemy.actor.Executable

isFireFunctional, iterate, prefire, stop, stopFire, terminate

Methods inherited from interface ptolemy.actor.Initializable

addInitializable, preinitialize, removeInitializable, wrapup

Methods inherited from interface ptolemy.kernel.util.Nameable

description, getContainer, getDisplayName, getFullName, getName, getName, setName

Field Detail

delay

public PortParameter delay

Deprecated.

The amount specifying delay. Its default value is 1.0.

_currentOutput

protected Token _currentOutput

Deprecated.

Current output.

_delay

protected double _delay

Deprecated.

The amount of delay.

_delayedOutputTokens

protected CalendarQueue _delayedOutputTokens

Deprecated.

A local event queue to store the delayed output tokens.

Constructor Detail

VariableDelay

public VariableDelay(CompositeEntity container,
                     java.lang.String name)
              throws NameDuplicationException,
                     IllegalActionException

Deprecated.

Construct an actor with the specified container and name.

Parameters:

container - The composite entity to contain this one.

name - The name of this actor.

Throws:

IllegalActionException - If the entity cannot be contained by the proposed container.

NameDuplicationException - If the container already has an actor with this name.

Method Detail

attributeChanged

public void attributeChanged(Attribute attribute)
                      throws IllegalActionException

Deprecated.

If the attribute is delay, then ensure that the value is non-negative.

NOTE: the newDelay may be 0.0, which may change the causality property of the model. We leave the model designers to decide whether the zero delay is really what they want.

Overrides:

attributeChanged in class NamedObj

Parameters:

attribute - The attribute that changed.

Throws:

IllegalActionException - If the delay is negative.

clone

public java.lang.Object clone(Workspace workspace)
                       throws java.lang.CloneNotSupportedException

Deprecated.

Clone the actor into the specified workspace. Set a type constraint that the output type is the same as the that of input.

Overrides:

clone in class TypedAtomicActor

Parameters:

workspace - The workspace for the new object.

Returns:

A new actor.

Throws:

java.lang.CloneNotSupportedException - If a derived class has has an attribute that cannot be cloned.

See Also:

NamedObj.exportMoML(Writer, int, String), NamedObj.setDeferringChangeRequests(boolean)

declareDelayDependency

public void declareDelayDependency()
                            throws IllegalActionException

Deprecated.

Declare that the output does not depend on the input and delay in a firing.

Overrides:

declareDelayDependency in class AtomicActor<TypedIOPort>

Throws:

IllegalActionException - If the causality interface cannot be computed.

See Also:

AtomicActor.getCausalityInterface()

fire

public void fire()
          throws IllegalActionException

Deprecated.

Update the delay parameter from the delay port and ensure the delay is not negative. Call the fire method of super class to consume inputs and generate outputs.

Specified by:

fire in interface Executable

Overrides:

fire in class AtomicActor<TypedIOPort>

Throws:

IllegalActionException - If the super class throws it, or a negative delay is received.

initialize

public void initialize()
                throws IllegalActionException

Deprecated.

Initialize the states of this actor.

Specified by:

initialize in interface Initializable

Overrides:

initialize in class AtomicActor<TypedIOPort>

Throws:

IllegalActionException - If a derived class throws it.

isStrict

public boolean isStrict()

Deprecated.

Return false indicating that this actor can be fired even if the inputs are unknown.

Specified by:

isStrict in interface Executable

Overrides:

isStrict in class AtomicActor<TypedIOPort>

Returns:

False.

postfire

public boolean postfire()
                 throws IllegalActionException

Deprecated.

Process the current input if it has not been processed. Schedule a firing to produce the earliest output token.

Specified by:

postfire in interface Executable

Overrides:

postfire in class AtomicActor<TypedIOPort>

Returns:

True if execution can continue into the next iteration.

Throws:

IllegalActionException - If scheduling to refire cannot be performed or the superclass throws it.