Package com.apicatalog.rdf.model

Interface RdfTriple

All Superinterfaces:

RdfTerm

All Known Subinterfaces:

RdfQuad

All Known Implementing Classes:

Quad, Triple

public interface RdfTriple
extends RdfTerm

Represents an immutable RDF triple, consisting of a subject, predicate, and object.

An RdfTriple models a single statement in an RDF graph. Each triple is composed of:

• A subject that identifies what the statement is about.
• A predicate that indicates the relationship or property.
• An object that provides the value or target of the statement.

This interface extends RdfTerm and provides methods to access each component of the triple. It also identifies itself as an RDF triple via the isTriple() method.

Experimental support for RDF-star (RDF 1.2) allows the object of a triple to be another RdfTriple.

See Also:

RDF 1.1 Triple

Method Summary

Modifier and Type	Method	Description
default RdfTriple	asTriple()	Returns this term as an RdfTriple.
default boolean	isTriple()	Indicates whether this term is an RDF triple.
RdfTerm	object()	Returns the object of the triple.
RdfResource	predicate()	Returns the predicate of the triple.
RdfResource	subject()	Returns the subject of the triple.

Methods inherited from interface com.apicatalog.rdf.model.RdfTerm

asLiteral, asResource, equals, hashCode, isLiteral, isResource, toString

Method Detail

subject

RdfResource subject()

Returns the subject of the triple.

The subject is either an absolute IRI or a blank node identifier, denoting the resource being described by the statement.

Returns:

a RdfResource representing the subject of the triple; never null

predicate

RdfResource predicate()

Returns the predicate of the triple.

The predicate is an absolute IRI that specifies the property or relationship between the subject and the object of the triple.

Returns:

a RdfResource representing the predicate of the triple; never null

object

RdfTerm object()

Returns the object of the triple.

The object can be:

• An absolute IRI or blank node identifier (RdfResource)
• A literal value (RdfLiteral)
• Another RdfTriple (RDF 1.2 - experimental support)

Returns:

a RdfTerm representing the object of the triple; never null

isTriple

default boolean isTriple()

Description copied from interface: RdfTerm

Indicates whether this term is an RDF triple.

RDF triples are supported for RDF-star (RDF 1.2) compatibility.

Specified by:

isTriple in interface RdfTerm

Returns:

true if the term is an RdfTriple; false otherwise.

asTriple

default RdfTriple asTriple()

Description copied from interface: RdfTerm

Returns this term as an RdfTriple.

Specified by:

asTriple in interface RdfTerm

Returns:

the RdfTriple representation of this term.