ptolemy.data.ontologies

Class Ontology

java.lang.Object

ptolemy.kernel.util.NamedObj

ptolemy.kernel.InstantiableNamedObj

ptolemy.kernel.Entity<T>

ptolemy.kernel.ComponentEntity

ptolemy.kernel.CompositeEntity

ptolemy.data.ontologies.Ontology

All Implemented Interfaces:

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

Direct Known Subclasses:

ProductLatticeOntology

public class Ontology
extends CompositeEntity

A specification of an ontology, which is a set of concepts and a partial ordering relation. The structure is represented by interconnections between concepts contained by this ontology.

Since:

Ptolemy II 10.0

Version:

$Id$

Author:

Edward A. Lee, Ben Lickly, Dai Bui, Christopher Brooks

See Also:

ConceptGraph, Concept

Pt.AcceptedRating:

Red (blickly)

Pt.ProposedRating:

Red (blickly)

Nested Class Summary

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

CompositeEntity.ContainedObjectsIterator

Field Summary

Fields

Modifier and Type	Field and Description
protected ConceptGraph	_graph The cached graph.
protected long	_graphVersion The workspace version at which the cached graph was valid.

Fields inherited from class ptolemy.kernel.CompositeEntity

_levelCrossingLinks

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 and Description
Ontology(CompositeEntity container, java.lang.String name) Create a new Ontology with the specified container and the specified name.
Ontology(Workspace workspace) Create a new Ontology with no container or name.

Method Summary

Modifier and Type	Method and Description
protected ConceptGraph	_buildConceptGraph() Return the graph represented by this ontology.
Concept	getConceptByString(java.lang.String conceptString) Return the concept in the ontology represented by the given string, or null if no such concept exists.
ConceptGraph	getConceptGraph() Return the graph represented by this ontology.
java.util.Set<FiniteConcept>	getUnacceptableConcepts() Return a set of finite concepts which are unacceptable solutions in all situations.
boolean	isLattice() Return true if the ontology graph is a lattice, false otherwise.
ComponentRelation	newRelation(java.lang.String name) Create a new relation with the specified name, add it to the relation list, and return it.

Methods inherited from class ptolemy.kernel.CompositeEntity

_addEntity, _addRelation, _adjustDeferrals, _containedDecorators, _deepOpaqueEntityList, _description, _exportMoMLContents, _finishedAddEntity, _removeEntity, _removeRelation, _validateSettables, allAtomicEntityList, allowLevelCrossingConnect, classDefinitionList, clone, connect, connect, containedObjectsIterator, deepCompositeEntityList, deepEntityList, deepGetEntities, deepNamedObjList, deepOpaqueEntityList, deepRelationSet, entityList, entityList, exportLinks, exportMoML, getAttribute, getEntities, getEntity, getPort, getRelation, getRelations, isAtomic, isOpaque, lazyAllAtomicEntityList, lazyAllCompositeEntityList, lazyAllCompositeTransparentAndOpaqueEntityList, lazyClassDefinitionList, lazyDeepEntityList, lazyEntityList, lazyRelationList, numberOfEntities, numberOfRelations, numEntities, numRelations, relationList, removeAllEntities, removeAllRelations, setClassDefinition, setContainer, statistics, uniqueName

Methods inherited from class ptolemy.kernel.ComponentEntity

_checkContainer, _getContainedObject, _propagateExistence, getContainer, instantiate, moveDown, moveToFirst, moveToIndex, moveToLast, moveUp, newPort, propagateExistence, setName

Methods inherited from class ptolemy.kernel.Entity

_addPort, _removePort, connectedPortList, connectedPorts, connectionsChanged, getPorts, linkedRelationList, linkedRelations, portList, removeAllPorts

Methods inherited from class ptolemy.kernel.InstantiableNamedObj

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

Methods inherited from class ptolemy.kernel.util.NamedObj

_addAttribute, _adjustOverride, _attachText, _cloneFixAttributeFields, _copyChangeRequestList, _debug, _debug, _debug, _debug, _debug, _executeChangeRequests, _getIndentPrefix, _isMoMLSuppressed, _markContentsDerived, _notifyHierarchyListenersAfterChange, _notifyHierarchyListenersBeforeChange, _propagateValue, _removeAttribute, _splitName, _stripNumericSuffix, addChangeListener, addDebugListener, addHierarchyListener, attributeChanged, attributeDeleted, attributeList, attributeList, attributeTypeChanged, clone, 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.kernel.util.Derivable

getDerivedLevel, getDerivedList, propagateValue

Methods inherited from interface ptolemy.kernel.util.Nameable

description, getDisplayName, getFullName, getName, getName

Field Detail

_graph

protected ConceptGraph _graph

The cached graph.

_graphVersion

protected long _graphVersion

The workspace version at which the cached graph was valid.

Constructor Detail

Ontology

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

Create a new Ontology with the specified container and the specified name.

Parameters:

container - The container.

name - The name for the ontology.

Throws:

NameDuplicationException - If the container already contains an ontology with the specified name.

IllegalActionException - If the base class throws it.

Ontology

public Ontology(Workspace workspace)
         throws IllegalActionException

Create a new Ontology with no container or name.

Parameters:

workspace - The workspace into which to put it.

Throws:

IllegalActionException - If the base class throws it.

Method Detail

getConceptByString

public Concept getConceptByString(java.lang.String conceptString)
                           throws IllegalActionException

Return the concept in the ontology represented by the given string, or null if no such concept exists.

Parameters:

conceptString - The string of the concept to look for, which would be what is returned by the concept's toString() method. This is not necessarily the Ptolemy NamedObj name of the concept. For example, InfiniteConcepts have automatically generated unique names that are not the same as what is returned by their toString() method.

Returns:

The concept that is represented by the given string, or null if no such concept exists.

Throws:

IllegalActionException - Thrown if there is an error getting the concept.

getConceptGraph

public ConceptGraph getConceptGraph()

Return the graph represented by this ontology. Graph is weighted by Concepts on the nodes and ConceptRelations on the edges. Currently we only have ontologies that are lattices, but in general, an ontology can represent more general relationships that might have a graph structure that is not a lattice. So we provide the getGraph() method in the base class for any future ontology subclasses that are not lattices.

Returns:

The concept graph.

getUnacceptableConcepts

public java.util.Set<FiniteConcept> getUnacceptableConcepts()

Return a set of finite concepts which are unacceptable solutions in all situations. Here these concepts are undesirable for any user of this ontology, for example, "Top" may indicate a conflict for all models using this ontology. Ontologies may not contain duplicate concepts, so the collection of unacceptable finite concepts is always a set.

Returns:

The set of unacceptable finite concepts in this ontology.

isLattice

public boolean isLattice()

Return true if the ontology graph is a lattice, false otherwise.

Returns:

True if the graph is a lattice, false otherwise.

newRelation

public ComponentRelation newRelation(java.lang.String name)
                              throws IllegalActionException,
                                     NameDuplicationException

Create a new relation with the specified name, add it to the relation list, and return it. This method is write-synchronized on the workspace and increments its version number. This overrides CompositeEntity.newRelation(java.lang.String) of CompositeEntity.

Overrides:

newRelation in class CompositeEntity

Parameters:

name - The name of the new relation.

Returns:

The new relation.

Throws:

IllegalActionException - If name argument is null.

NameDuplicationException - If name collides with a name already in the container.

_buildConceptGraph

protected ConceptGraph _buildConceptGraph()

Return the graph represented by this ontology. Graph is weighted by FiniteConcepts on the nodes and ConceptRelations on the edges.

Returns:

The concept graph.