Package org.semanticweb.owlapi.io

Class RDFNode

java.lang.Object

org.semanticweb.owlapi.io.RDFNode

All Implemented Interfaces:

Serializable, Comparable<RDFNode>, org.apache.commons.rdf.api.RDFTerm, HasIRI

Direct Known Subclasses:

RDFLiteral, RDFResource

public abstract class RDFNode
extends Object
implements Serializable, Comparable<RDFNode>, HasIRI, org.apache.commons.rdf.api.RDFTerm

Since:

3.2

Author:

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

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
RDFNode()

Method Summary

Modifier and Type	Method	Description
boolean	idRequired()
boolean	isAnonymous()	Determines if this node is a resource and is anonymous.
boolean	isAxiom()	Determines if this node is an axiom.
boolean	isIndividual()
boolean	isLiteral()	Determines if this node is a literal node.
boolean	shouldOutputId()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Comparable

compareTo

Methods inherited from interface org.semanticweb.owlapi.model.HasIRI

getIRI

Methods inherited from interface org.apache.commons.rdf.api.RDFTerm

equals, hashCode, ntriplesString

Constructor Details

RDFNode

public RDFNode()

Method Details

isLiteral

public boolean isLiteral()

Determines if this node is a literal node.

Returns:

true if this node is a literal, otherwise false.

isAxiom

public boolean isAxiom()

Determines if this node is an axiom.

Returns:

true if this node is a literal, otherwise false.

isAnonymous

public boolean isAnonymous()

Determines if this node is a resource and is anonymous.

Returns:

true if this is a resource node (i.e. isLiteral() returns false) and the node is anonymous, or false if this is a resource node and is not anonymous.

isIndividual

public boolean isIndividual()

Returns:

true if this is an anonymous individual

shouldOutputId

public boolean shouldOutputId()

Returns:

true if blank node id is mandatory for this resource

idRequired

public boolean idRequired()

Returns:

true if an id is required for this node - only if this is an individual or an axiom and id is required