ptolemy.actor.lib.hoc
Class CaseDirector

java.lang.Object
  ptolemy.kernel.util.NamedObj
      ptolemy.kernel.util.Attribute
          ptolemy.actor.Director
              ptolemy.actor.lib.hoc.CaseDirector

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, Executable, Initializable, Changeable, Debuggable, DebugListener, Derivable, ModelErrorHandler, MoMLExportable, Moveable, Nameable

Direct Known Subclasses:

CTCaseDirector

public class CaseDirector
extends Director

An CaseDirector governs the execution of a Case actor. This director simply delegates to the refinement whose name matches the value of the current control input.

Since:

Ptolemy II 5.2

Version:

$Id: CaseDirector.java 57046 2010-01-27 23:35:53Z cxh $

Author:

Edward A. Lee

See Also:

Serialized Form

Accepted Rating:

Red (hyzheng)

Proposed Rating:

Yellow (eal)

Nested Class Summary

Nested classes/interfaces inherited from class ptolemy.kernel.util.NamedObj

NamedObj.ContainedObjectsIterator

Field Summary

Fields inherited from class ptolemy.actor.Director

_actorsFinishedExecution, _currentTime, _finishRequested, _initializables, _stopRequested, timeResolution

Fields inherited from class ptolemy.kernel.util.NamedObj

_changeListeners, _changeLock, _changeRequests, _debugging, _debugListeners, _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

CaseDirector(CompositeEntity container, java.lang.String name)
Construct a director in the given container with the given name.

Method Summary

void	fire() Fire the current refinement.
Time	fireAt(Actor actor, Time time) Schedule a firing of the given actor at the given time.
Receiver	newReceiver() Return a receiver that is a one-place buffer.
boolean	postfire() Invoke the postfire() method of the current local director.
boolean	prefire() Read the control token input, transfer input tokens, and invoke prefire() of the selected refinement.

Methods inherited from class ptolemy.actor.Director

_description, _fireContainerAt, _isEmbedded, _isTopLevel, _transferInputs, _transferOutputs, addInitializable, attributeChanged, createSchedule, defaultDependency, finish, fireAt, fireAtCurrentTime, getCausalityInterface, getCurrentTime, getErrorTolerance, getGlobalTime, getModelNextIterationTime, getModelStartTime, getModelStopTime, getModelTime, getNextIterationTime, getStartTime, getStopTime, getTimeResolution, implementsStrictActorSemantics, initialize, initialize, invalidateResolvedTypes, invalidateSchedule, isFireFunctional, isStopRequested, isStrict, iterate, preinitialize, preinitialize, removeInitializable, requestInitialization, setContainer, setCurrentTime, setModelTime, stop, stopFire, suggestedModalModelDirectors, supportMultirateFiring, terminate, transferInputs, transferOutputs, wrapup

Methods inherited from class ptolemy.kernel.util.Attribute

_checkContainer, _getContainedObject, _propagateExistence, clone, getContainer, moveDown, moveToFirst, moveToIndex, moveToLast, moveUp, setName, updateContent

Methods inherited from class ptolemy.kernel.util.NamedObj

_addAttribute, _adjustOverride, _attachText, _cloneFixAttributeFields, _debug, _debug, _debug, _debug, _debug, _exportMoMLContents, _getIndentPrefix, _isMoMLSuppressed, _markContentsDerived, _propagateValue, _recordDecoratedAttributes, _removeAttribute, _splitName, _stripNumericSuffix, _validateSettables, addChangeListener, addDebugListener, attributeList, attributeList, attributeTypeChanged, clone, containedObjectsIterator, deepContains, depthInHierarchy, description, description, event, executeChangeRequests, exportMoML, exportMoML, exportMoML, exportMoML, exportMoML, exportMoMLPlain, getAttribute, getAttribute, getAttributes, getChangeListeners, getClassName, getDecoratorAttribute, getDecoratorAttributes, getDerivedLevel, getDerivedList, getDisplayName, getElementName, getFullName, getModelErrorHandler, getName, getName, getPrototypeList, getSource, handleModelError, isDeferringChangeRequests, isOverridden, isPersistent, lazyContainedObjectsIterator, message, propagateExistence, propagateValue, propagateValues, removeChangeListener, removeDebugListener, requestChange, setClassName, setDeferringChangeRequests, setDerivedLevel, setDisplayName, setModelErrorHandler, setPersistent, setSource, sortContainedObjects, toplevel, toString, uniqueName, validateSettables, workspace

Methods inherited from class java.lang.Object

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

Constructor Detail

CaseDirector

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

Construct a director in the given container with the given name. The container argument must not be null, or a NullPointerException will be thrown. If the name argument is null, then the name is set to the empty string. Increment the version number of the workspace.

Parameters:

container - Container of this director.

name - Name of this director.

Throws:

IllegalActionException - If the name has a period in it, or the director is not compatible with the specified container.

NameDuplicationException - If the container not a CompositeActor and the name collides with an entity in the container.

Method Detail

fireAt

public Time fireAt(Actor actor,
                   Time time)
            throws IllegalActionException

Schedule a firing of the given actor at the given time. If there is an executive director, this method delegates to it. Otherwise, it sets its own notion of current time to that specified in the argument. The reason for this is to enable Case to be a top-level actor and to support the design pattern where a director requests a refiring at the next time it wishes to be awakened, just prior to returning from fire(). DEDirector, for example, does that, as does the SDFDirector if the period parameter is set.

Overrides:

fireAt in class Director

Parameters:

actor - The actor scheduled to be fired.

time - The scheduled time.

Returns:

The time returned by the executive director, or or the specified time if there isn't one.

Throws:

IllegalActionException - If by the executive director.

See Also:

Director.fireAtCurrentTime(Actor)

fire

public void fire()
          throws IllegalActionException

Fire the current refinement.

Specified by:

fire in interface Executable

Overrides:

fire in class Director

Throws:

IllegalActionException - If refinement throws it.

newReceiver

public Receiver newReceiver()

Return a receiver that is a one-place buffer. A token put into the receiver will overwrite any token already in the receiver.

Overrides:

newReceiver in class Director

Returns:

A receiver that is a one-place buffer.

prefire

public boolean prefire()
                throws IllegalActionException

Read the control token input, transfer input tokens, and invoke prefire() of the selected refinement.

Specified by:

prefire in interface Executable

Overrides:

prefire in class Director

Returns:

True.

Throws:

IllegalActionException - If there is no director, or if the director's prefire() method throws it, or if this actor is not opaque.

postfire

public boolean postfire()
                 throws IllegalActionException

Invoke the postfire() method of the current local director.

Specified by:

postfire in interface Executable

Overrides:

postfire in class Director

Returns:

True if the execution can continue into the next iteration.

Throws:

IllegalActionException - If there is no director, or if the director's postfire() method throws it, or if this actor is not opaque.