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	addTriple(RDFTriple triple)
Map<RDFTriple,RDFResourceBlankNode>	computeRemappingForSharedNodes()
void	dumpTriples(Writer w)
Set<RDFTriple>	getAllTriples()
Set<RDFResourceBlankNode>	getRootAnonymousNodes()
Collection<RDFTriple>	getTriplesForSubject(RDFNode subject)
boolean	isEmpty() Determines if this graph is empty (i.e.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, 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

computeRemappingForSharedNodes

public Map<RDFTriple,RDFResourceBlankNode> computeRemappingForSharedNodes()

Returns:

for each triple with a blank node object that is shared with other triples, compute a remapping of the node.

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