org.semanticweb.owlapi.io

Class RDFLiteral

java.lang.Object

org.semanticweb.owlapi.io.RDFNode

org.semanticweb.owlapi.io.RDFLiteral

All Implemented Interfaces:

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

public class RDFLiteral
extends RDFNode
implements org.apache.commons.rdf.api.Literal

Since:

3.2

Author:

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

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RDFLiteral(OWLLiteral literal)
RDFLiteral(String literal, String lang, IRI datatype) Constructor for plain literal wrappers.

Method Summary

Modifier and Type	Method and Description
int	compareTo(RDFNode o)
boolean	equals(Object obj)
IRI	getDatatype()
IRI	getIRI() Gets the IRI of this object.
String	getLang()
Optional<String>	getLanguageTag()
String	getLexicalForm()
String	getLexicalValue()
int	hashCode()
boolean	hasLang()
boolean	isLiteral() Determines if this node is a literal node.
boolean	isPlainLiteral()
String	ntriplesString()
String	toString()

Methods inherited from class org.semanticweb.owlapi.io.RDFNode

idRequired, isAnonymous, isAxiom, isIndividual, shouldOutputId

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

RDFLiteral

public RDFLiteral(String literal,
                  @Nullable
                  String lang,
                  @Nullable
                  IRI datatype)

Constructor for plain literal wrappers.

Parameters:

literal - lexical form

lang - language tag

datatype - datatype IRI

RDFLiteral

public RDFLiteral(OWLLiteral literal)

Parameters:

literal - the wrapped literal

Method Detail

isLiteral

public boolean isLiteral()

Description copied from class: RDFNode

Determines if this node is a literal node.

Overrides:

isLiteral in class RDFNode

Returns:

true if this node is a literal, otherwise false.

hashCode

public int hashCode()

Specified by:

hashCode in interface org.apache.commons.rdf.api.Literal

Specified by:

hashCode in interface org.apache.commons.rdf.api.RDFTerm

Overrides:

hashCode in class Object

equals

public boolean equals(@Nullable
                      Object obj)

Specified by:

equals in interface org.apache.commons.rdf.api.Literal

Specified by:

equals in interface org.apache.commons.rdf.api.RDFTerm

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

getIRI

public IRI getIRI()

Description copied from interface: HasIRI

Gets the IRI of this object.

Specified by:

getIRI in interface HasIRI

Returns:

The IRI of this object

getLexicalValue

public String getLexicalValue()

Returns:

the lexical form for this literal

getLexicalForm

public String getLexicalForm()

Specified by:

getLexicalForm in interface org.apache.commons.rdf.api.Literal

getLang

public String getLang()

Returns:

the lang tag for this literal

getLanguageTag

public Optional<String> getLanguageTag()

Specified by:

getLanguageTag in interface org.apache.commons.rdf.api.Literal

getDatatype

public IRI getDatatype()

Specified by:

getDatatype in interface org.apache.commons.rdf.api.Literal

hasLang

public boolean hasLang()

Returns:

true if this literal has a non empty lang tag

isPlainLiteral

public boolean isPlainLiteral()

Returns:

true if the datatype of this literal is plain literal

compareTo

public int compareTo(@Nullable
                     RDFNode o)

Specified by:

compareTo in interface Comparable<RDFNode>

ntriplesString

public String ntriplesString()

Specified by:

ntriplesString in interface org.apache.commons.rdf.api.RDFTerm