Package ptolemy.actor.gt.controller

Class PersistenceAttribute

java.lang.Object

ptolemy.kernel.util.NamedObj

ptolemy.kernel.util.Attribute

ptolemy.kernel.util.SingletonAttribute

ptolemy.actor.gt.controller.PersistenceAttribute

All Implemented Interfaces:

java.lang.Cloneable, Changeable, Debuggable, DebugListener, Derivable, ModelErrorHandler, MoMLExportable, Moveable, Nameable, Singleton

public class PersistenceAttribute
extends SingletonAttribute

A marker attribute indicating that a design pattern should be persistent.

Since:

Ptolemy II 10.0

Version:

$Id$

Author:

Thomas Huining Feng

Pt.AcceptedRating:

Red (tfeng)

Pt.ProposedRating:

Yellow (tfeng)

Nested Class Summary

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

NamedObj.ContainedObjectsIterator

Field Summary

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

Constructor Summary

Constructors

Constructor	Description
PersistenceAttribute(NamedObj container, java.lang.String name)	Construct an attribute with the given name contained by the specified entity.

Method Summary

Modifier and Type	Method	Description
NamedObj	clone(Workspace workspace)	Clone the parameter into the specified workspace.
boolean	isPersistent()	Always return false, indicating that this attribute is not persistent.
void	setContainer(NamedObj container)	Specify the container NamedObj, adding this attribute to the list of attributes in the container.

Methods inherited from class ptolemy.kernel.util.Attribute

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

Methods inherited from class ptolemy.kernel.util.NamedObj

_addAttribute, _adjustOverride, _attachText, _cloneFixAttributeFields, _containedDecorators, _copyChangeRequestList, _debug, _debug, _debug, _debug, _debug, _description, _executeChangeRequests, _exportMoMLContents, _getIndentPrefix, _isMoMLSuppressed, _markContentsDerived, _notifyHierarchyListenersAfterChange, _notifyHierarchyListenersBeforeChange, _propagateValue, _removeAttribute, _splitName, _stripNumericSuffix, _validateSettables, addChangeListener, addDebugListener, addHierarchyListener, attributeChanged, attributeDeleted, attributeList, attributeList, attributeTypeChanged, clone, containedObjectsIterator, decorators, 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, lazyContainedObjectsIterator, message, notifyOfNameChange, propagateExistence, propagateValue, propagateValues, removeAttribute, removeChangeListener, removeDebugListener, removeHierarchyListener, 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

PersistenceAttribute

public PersistenceAttribute(NamedObj container,
                            java.lang.String name)
                     throws NameDuplicationException,
                            IllegalActionException

Construct an attribute with the given name contained by the specified entity. The container argument must not be null, or a NullPointerException will be thrown. This attribute will use the workspace of the container for synchronization and version counts. If the name argument is null, then the name is set to the empty string. Increment the version of the workspace.

Parameters:

container - The container.

name - The name of this attribute.

Throws:

IllegalActionException - If the attribute is not of an acceptable class for the container, or if the name contains a period.

NameDuplicationException - If the name coincides with an attribute already in the container.

Method Detail

clone

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

Clone the parameter into the specified workspace. The cloned parameter is marked as being persistent.

Overrides:

clone in class Attribute

Parameters:

workspace - The workspace for the new object.

Returns:

A new parameter.

Throws:

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

See Also:

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

isPersistent

public boolean isPersistent()

Always return false, indicating that this attribute is not persistent.

Specified by:

isPersistent in interface MoMLExportable

Overrides:

isPersistent in class NamedObj

Returns:

Always return false, indicating that this attribute is not persistent.

See Also:

NamedObj.setPersistent(boolean), MoMLExportable

setContainer

public void setContainer(NamedObj container)
                  throws IllegalActionException,
                         NameDuplicationException

Specify the container NamedObj, adding this attribute to the list of attributes in the container. For non-toplevel containers, before setting the container, the persistence of the old container is set to the previous persistence value, the container is set to the new value and the previous persistence value is updated.

Overrides:

setContainer in class SingletonAttribute

Parameters:

container - The container to attach this attribute to.

Throws:

IllegalActionException - If this attribute is not of the expected class for the container, or it has no name, or the attribute and container are not in the same workspace, or the proposed container would result in recursive containment.

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

See Also:

Attribute.getContainer()