Class OntologyGraph

Represents a Graph with additional methods for extracting ontology based information from it.

Inheritance
object
BaseGraph
Graph
OntologyGraph
ReasonerGraph
Implements
Inherited Members
Namespace: VDS.RDF.Ontology
Assembly: dotNetRdf.Ontology.dll
Syntax
public class OntologyGraph : Graph, IGraph, INodeFactory, IDisposable, ITripleIndex, IEquatable<IGraph>, IEquatable<Graph>
Remarks

See Using the Ontology API for some informal documentation on the use of the Ontology namespace.

Constructors

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OntologyGraph(Uri)

Creates a new Ontology Graph with the specified URI as the graph name.

Declaration
public OntologyGraph(Uri name)
Parameters
Type Name Description
Uri name

The graph name as a URI.
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OntologyGraph(Uri, BaseTripleCollection)

Creates a new Ontology Graph with the specified name and initial content

Declaration
public OntologyGraph(Uri name, BaseTripleCollection tripleCollection)
Parameters
Type Name Description
Uri name

The name to assign to the graph.
BaseTripleCollection tripleCollection

The initial content of the graph.
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OntologyGraph(IRefNode, BaseTripleCollection)

Creates a new Ontology Graph with the specified name and initial content

Declaration
public OntologyGraph(IRefNode name, BaseTripleCollection tripleCollection)
Parameters
Type Name Description
IRefNode name

The name to assign to the graph.
BaseTripleCollection tripleCollection

The initial content of the graph.
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OntologyGraph(IRefNode, INodeFactory, IUriFactory, BaseTripleCollection)

Creates a new Ontology Graph.

Declaration
public OntologyGraph(IRefNode graphName = null, INodeFactory nodeFactory = null, IUriFactory uriFactory = null, BaseTripleCollection tripleCollection = null)
Parameters
Type Name Description
IRefNode graphName

The name to assign to the graph.
INodeFactory nodeFactory

The factory to use when constructing nodes in this graph. If null, defaults to a new NodeFactory instance using the same UriFactory instance as this graph.
IUriFactory uriFactory

The factory to use when constructing URIs in this graph. If null, default to the root UriFactory.
BaseTripleCollection tripleCollection

The initial content of the graph. If null, the graph will initially be empty.

Properties

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AllClasses

Gets all classes defined in the graph using the standard rdfs:Class and owl:Class types.

Declaration
public IEnumerable<OntologyClass> AllClasses { get; }
Property Value
Type Description
IEnumerable<OntologyClass>
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AllProperties

Gets all properties defined in the graph using any of the standard property types (rdf:Property, owl:AnnotationProperty, owl:DataProperty, owl:ObjectProperty).

Declaration
public IEnumerable<OntologyProperty> AllProperties { get; }
Property Value
Type Description
IEnumerable<OntologyProperty>
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OwlAnnotationProperties

Gets all OWL Annotation properties defined in the graph.

Declaration
public IEnumerable<OntologyProperty> OwlAnnotationProperties { get; }
Property Value
Type Description
IEnumerable<OntologyProperty>
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OwlClasses

Get all OWL classes defined in the graph.

Declaration
public IEnumerable<OntologyClass> OwlClasses { get; }
Property Value
Type Description
IEnumerable<OntologyClass>
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OwlDatatypeProperties

Gets all OWL Data properties defined in the graph.

Declaration
public IEnumerable<OntologyProperty> OwlDatatypeProperties { get; }
Property Value
Type Description
IEnumerable<OntologyProperty>
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OwlObjectProperties

Gets all OWL Object properties defined in the graph.

Declaration
public IEnumerable<OntologyProperty> OwlObjectProperties { get; }
Property Value
Type Description
IEnumerable<OntologyProperty>
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OwlProperties

Gets all properties defined in the graph using any of the standard OWL property types (owl:AnnotationProperty, owl:DataProperty, owl:ObjectProperty).

Declaration
public IEnumerable<OntologyProperty> OwlProperties { get; }
Property Value
Type Description
IEnumerable<OntologyProperty>
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RdfClasses

Get all the RDFS classes defined in the graph.

Declaration
public IEnumerable<OntologyClass> RdfClasses { get; }
Property Value
Type Description
IEnumerable<OntologyClass>
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RdfProperties

Gets all RDF properties defined in the graph.

Declaration
public IEnumerable<OntologyProperty> RdfProperties { get; }
Property Value
Type Description
IEnumerable<OntologyProperty>

Methods

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CreateIndividual(Uri)

Gets an existing individual in the Graph.

Declaration
public virtual Individual CreateIndividual(Uri resource)
Parameters
Type Name Description
Uri resource

Individual Resource.
Returns
Type Description
Individual
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CreateIndividual(Uri, Uri)

Gets/Creates an individual in the Graph of the given class.

Declaration
public virtual Individual CreateIndividual(Uri resource, Uri @class)
Parameters
Type Name Description
Uri resource

Individual Resource.
Uri class

Class.
Returns
Type Description
Individual
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CreateIndividual(INode)

Gets an existing individual in the Graph.

Declaration
public virtual Individual CreateIndividual(INode resource)
Parameters
Type Name Description
INode resource

Individual Resource.
Returns
Type Description
Individual
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CreateIndividual(INode, INode)

Gets/Creates an individual in the Graph of the given class.

Declaration
public virtual Individual CreateIndividual(INode resource, INode @class)
Parameters
Type Name Description
INode resource

Individual Resource.
INode class

Class.
Returns
Type Description
Individual
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CreateOntologyClass()

Gets/Creates an anonymous ontology class in the Graph.

Declaration
public virtual OntologyClass CreateOntologyClass()
Returns
Type Description
OntologyClass
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CreateOntologyClass(Uri)

Gets/Creates an ontology class in the Graph.

Declaration
public virtual OntologyClass CreateOntologyClass(Uri resource)
Parameters
Type Name Description
Uri resource

Class Resource.
Returns
Type Description
OntologyClass
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CreateOntologyClass(INode)

Gets/Creates an ontology class in the Graph.

Declaration
public virtual OntologyClass CreateOntologyClass(INode resource)
Parameters
Type Name Description
INode resource

Class Resource.
Returns
Type Description
OntologyClass
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CreateOntologyProperty(Uri)

Gets/Creates an ontology property in the Graph.

Declaration
public virtual OntologyProperty CreateOntologyProperty(Uri resource)
Parameters
Type Name Description
Uri resource

Property Resource.
Returns
Type Description
OntologyProperty
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CreateOntologyProperty(INode)

Gets/Creates an ontology property in the Graph.

Declaration
public virtual OntologyProperty CreateOntologyProperty(INode resource)
Parameters
Type Name Description
INode resource

Property Resource.
Returns
Type Description
OntologyProperty
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CreateOntologyResource()

Gets/Creates an anonymous ontology resource in the Graph.

Declaration
public virtual OntologyResource CreateOntologyResource()
Returns
Type Description
OntologyResource
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CreateOntologyResource(Uri)

Gets/Creates an ontology resource in the Graph.

Declaration
public virtual OntologyResource CreateOntologyResource(Uri resource)
Parameters
Type Name Description
Uri resource

Resource.
Returns
Type Description
OntologyResource
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CreateOntologyResource(INode)

Gets/Creates an ontology resource in the Graph.

Declaration
public virtual OntologyResource CreateOntologyResource(INode resource)
Parameters
Type Name Description
INode resource

Resource.
Returns
Type Description
OntologyResource
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GetClasses(INode)

Get all classes defined in the graph where anything of a specific type is considered a class.

Declaration
public IEnumerable<OntologyClass> GetClasses(INode classType)
Parameters
Type Name Description
INode classType

Type which represents classes.
Returns
Type Description
IEnumerable<OntologyClass>

Enumeration of classes.
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GetProperties(INode)

Get all properties defined in the graph where anything of a specific type is considered a property.

Declaration
public IEnumerable<OntologyProperty> GetProperties(INode propertyType)
Parameters
Type Name Description
INode propertyType

Type which represents properties.
Returns
Type Description
IEnumerable<OntologyProperty>

Enumeration of properties.

Implements

Extension Methods