ptolemy.moml
Class ParserAttribute

java.lang.Object
  ptolemy.kernel.util.NamedObj
      ptolemy.kernel.util.Attribute
          ptolemy.kernel.util.SingletonAttribute
              ptolemy.moml.ParserAttribute

All Implemented Interfaces:

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

public class ParserAttribute
extends SingletonAttribute

This attribute represents a MoML parser. If it is present in an entity that is the context for a MoMLChangeRequest, then that change request will use it to parse the changes. It is not a persistent attribute (exportMoML() writes nothing). It is a singleton, meaning that if it is inserted into a container that already contains a singleton attribute with the same name, then it will replace the previous attribute.

By default, this attribute is not persistent, so it will not be present in a MoML representation of its container.

Since:

Ptolemy II 1.0

Version:

$Id: ParserAttribute.java 57040 2010-01-27 20:52:32Z cxh $

Author:

Edward A. Lee

See Also:

MoMLChangeRequest, Serialized Form

Accepted Rating:

Red (reviewmoderator)

Proposed Rating:

Red (eal)

Nested Class Summary

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

NamedObj.ContainedObjectsIterator

Field Summary

private MoMLParser

_parser

Fields inherited from class ptolemy.kernel.util.NamedObj

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

Constructor Summary

ParserAttribute(NamedObj container, java.lang.String name)
Construct an attribute with the specified container and name.

Method Summary

java.lang.Object	clone(Workspace workspace) Clone the attribute into the specified workspace.
MoMLParser	getParser() Get the parser.
static MoMLParser	getParser(NamedObj object) Get a parser for the specified object.
void	setParser(MoMLParser parser) Set the parser.

Methods inherited from class ptolemy.kernel.util.SingletonAttribute

setContainer

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, _debug, _debug, _debug, _debug, _debug, _description, _exportMoMLContents, _getIndentPrefix, _isMoMLSuppressed, _markContentsDerived, _propagateValue, _recordDecoratedAttributes, _removeAttribute, _splitName, _stripNumericSuffix, _validateSettables, addChangeListener, addDebugListener, attributeChanged, 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

Field Detail

_parser

private MoMLParser _parser

Constructor Detail

ParserAttribute

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

Construct an attribute with the specified container and name.

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

Clone the attribute into the specified workspace. The resulting object a null value for the value of the parser.

Overrides:

clone in class Attribute

Parameters:

workspace - The workspace for the cloned object.

Returns:

A new attribute.

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)

getParser

public MoMLParser getParser()

Get the parser. If none has been set, then return a new one.

Returns:

A MoML parser.

See Also:

setParser(MoMLParser)

getParser

public static MoMLParser getParser(NamedObj object)

Get a parser for the specified object. This searches up the hierarchy until it finds a container of the specified object that contains an instance of ParserAttribute. If none is found, then a new ParserAttribute is created at the top level.

Parameters:

object - The object for which to find an associated parser.

Returns:

The parser for the specified object.

Throws:

java.lang.NullPointerException - If the argument is null.

See Also:

setParser(MoMLParser)

setParser

public void setParser(MoMLParser parser)

Set the parser.

Parameters:

parser - The parser.

See Also:

getParser(), getParser(NamedObj)