Package gate.creole.ontology

The GATE ontology API.

See:
Description

Interface Summary

AllValuesFromRestriction	An AllValuesFromRestriction.
AnnotationProperty	An Annotation property.
AnonymousClass	This class represents the AnonymousClass.
CardinalityRestriction	A CardinalityRestriction
DatatypeProperty	Interface for datatype properties.
HasValueRestriction	A HasValueRestriction.
LiteralOrONodeID	A class representing something that is either a literal or a node ID.
MaxCardinalityRestriction	A MaxCardinalityRestriction.
MinCardinalityRestriction	A MinCardinalityRestriction.
ObjectProperty	ObjectProperty is a sub type of the RDFProperty.
OBNodeID	An object representing an ontology node ID.
OClass	Each OClass (Ontology Class) represents a concept/class in ontology.
OConstants	This interface holds some constants used by several other intrfaces and classes in the GATE ontology API.
OInstance	OInstance (Ontology Instance) represents an instance in the ontology/knowledge base.
ONodeID	An ONodeID represents the id of either a blank node or a resource.
Ontology	Interface for ontology language resources.
OntologyBooleanQuery	This represents a boolean query of the triple store for the ontology.
OntologyModificationListener	Objects wishing to listen to various ontology events, must implement this interface (using implements java keyword) and the methods of this interface.
OntologyTupleQuery	This represents a tuple query of the triple store for the ontology.
OResource	This is the top level interface for all ontology resources such as classes, instances and properties.
OURI	Interface for objects representing an URI.
OValue	A class representing something that is either a literal or a OResource.
RDFProperty	RDFProperty is the top level property.
Restriction	This interface defines a restriction in the ontology.
SomeValuesFromRestriction	A SomeValuesFromRestriction.
SymmetricProperty	Every SymmetricProperty is ObjectProperty.
TransitiveProperty	Interface for transitive properties.

Class Summary

BooleanDT	Boolean DataType
ByteDT	Byte DataType
DataType	This class provides a list of datatypes, supported by the ontology API.
DateDT
DateTimeDT
DoubleDT	Double Datatype
FloatDT	Float Datatype
IntegerDT	Integer Datatype
Literal	Literal represents a single value or a value with language used for annotation properties, or a value with datatype used for the datatype properties.
LongDT	Long Datatype
NegativeIntegerDT	Negative Integer Datatype
NonNegativeIntegerDT	NonNegativeInteger Datatype
OConstants.OWL	All predefined URIs from the OWL1 namespace.
OConstants.RDF	All predefined URIs from the RDF name space.
OConstants.RDFS	All predefined URIs from the RDFS name space.
OConstants.XMLSchema
OntologyUtilities	Deprecated. the use of this class and all its methods should be avoided in the future.
OUtils
ShortDT	Short Datatype
TimeDT
UnsignedByteDT	UnsignedByte Datatype
UnsignedLongDT	UnsignedLong Datatype
UnsignedShortDT	UnsignedShort Datatype
URI	Deprecated. Use OURI objects and the Ontology factory methods for creating them instead.
Utils

Enum Summary

OConstants.Closure	Closure constants.
OConstants.OntologyFormat	A list of serialization formats for ontologies.
OConstants.QueryLanguage

Exception Summary

GateOntologyException	Exception used to signal an gate ontology exception within Gate.
InvalidURIException	This exception is thrown when a URI is not valid.
InvalidValueException	This exception should be thrown when a property value is not compatible with the property. e.g. boolean value for the integer datatype, invalid instance for an object property.

Package gate.creole.ontology Description

The GATE ontology API. This package contains all the interfaces, classes and constants for using an ontology language resource and the objects that can be added or retrieved from an ontology language resource.

The actual implementation for this API is available in the form of two plugins:

• the Ontology_OWLIM2 plugin: this plugin contains the implementation that was part of the GATE core previous to version 5.1. This implementation is deprecated and exists for backwards-compatility and support of existing applications only. New applications should never make use of this implementation. This implementation provides the gate.creole.ontology.owlim.OWLIMOntologyLR ontology language resource.
• the Ontology plugin: this plugin contains the maintained implementation which does not provide some of the methods and objects that were present in the old implementation any more and provides support for a number of new methods and features (see below). This implementation provides the following language resources: gate.creole.ontology.impl.sesame.OWLIMOntology, gate.creole.ontology.impl.sesame.CreateSesameOntology, and gate.creole.ontology.impl.sesame.ConnectSesameOntology

The documentation for all the classes and interfaces in this package refers to the intended behavior of the maintained implementation in plugin Ontology by default.

Which implementation your code will run with simply depends on which plugin is loaded prior to when your code is run. To programmatically load the new implementation plugin, use the following code:

 File pluginHome = new File(new File(Gate.getGateHome(), "plugins"), "Ontology");
 Gate.getCreoleRegister().registerDirectories(pluginHome.toURI().toURL());