org.semanticweb.owlapi.rdf.model

Class RDFGraph

java.lang.Object

org.semanticweb.owlapi.rdf.model.RDFGraph

All Implemented Interfaces:

Serializable

public class RDFGraph
extends Object
implements Serializable

Since:

2.0.0

Author:

Matthew Horridge, The University Of Manchester, Bio-Health Informatics Group

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RDFGraph()

Method Summary

Modifier and Type	Method and Description
void	addRootIRIs(OWLEntity i) Some graphs have multiple root entities, i.e., sameAs(a1, a2, a3) axioms are turned to (a1 sameAs a2), (a2 sameAs a3) because of RDF limitations.
void	addTriple(RDFTriple triple)
void	dumpTriples(Writer w)
void	forceIdOutput() Ensure ids are output for reused individuals and annotated expressions.
Set<RDFTriple>	getAllTriples()
RDFResource	getOntology()
Set<RDFResourceBlankNode>	getRootAnonymousNodes()
Stream<OWLEntity>	getRootIRIs(OWLEntity toSkip)
List<RDFResource>	getSubjectsForObject(RDFResource node)
Collection<RDFTriple>	getTriplesForSubject(RDFNode subject)
boolean	isEmpty() Determines if this graph is empty (i.e.
void	setOntology(RDFResource mappedNode)
String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

RDFGraph

public RDFGraph()

Method Detail

isEmpty

public boolean isEmpty()

Determines if this graph is empty (i.e. whether or not it contains any triples).

Returns:

true if the graph contains triples, otherwise false

Since:

3.5

addTriple

public void addTriple(@Nonnull
                      RDFTriple triple)

Parameters:

triple - triple to add

getTriplesForSubject

public Collection<RDFTriple> getTriplesForSubject(RDFNode subject)

Parameters:

subject - subject

Returns:

sorted triples

forceIdOutput

public void forceIdOutput()

Ensure ids are output for reused individuals and annotated expressions.

getRootAnonymousNodes

@Nonnull
public Set<RDFResourceBlankNode> getRootAnonymousNodes()

Returns:

root anonymous nodes

dumpTriples

public void dumpTriples(@Nonnull
                        Writer w)
                 throws IOException

Parameters:

w - writer to write to

Throws:

IOException - if exceptions happen

getAllTriples

public Set<RDFTriple> getAllTriples()

Returns:

all triples in an unmodifiable set

toString

public String toString()

Overrides:

toString in class Object

getSubjectsForObject

public List<RDFResource> getSubjectsForObject(RDFResource node)

Parameters:

node - node to search

Returns:

list of subjects of triples that include the object

setOntology

public void setOntology(@Nullable
                        RDFResource mappedNode)

Parameters:

mappedNode - ontology node

getOntology

@Nullable
public RDFResource getOntology()

Returns:

ontology node

addRootIRIs

public void addRootIRIs(OWLEntity i)

Some graphs have multiple root entities, i.e., sameAs(a1, a2, a3) axioms are turned to (a1 sameAs a2), (a2 sameAs a3) because of RDF limitations. To render all triples, a1 and a2 must be rendered; usual process would render only a1, and so a3 would be lost.

Parameters:

i - root IRI for this graph

getRootIRIs

public Stream<OWLEntity> getRootIRIs(OWLEntity toSkip)

Parameters:

toSkip - entity to skip

Returns:

root entities, minus the one to be skipped, sorted