Package org.apache.commons.rdf.simple

Class TripleImpl

java.lang.Object

org.apache.commons.rdf.simple.TripleImpl

All Implemented Interfaces:

Triple, TripleLike

final class TripleImpl
extends java.lang.Object
implements Triple

A simple implementation of Triple.

Field Summary

Fields

Modifier and Type	Field	Description
private RDFTerm	object
private IRI	predicate
private BlankNodeOrIRI	subject

Constructor Summary

Constructors

Constructor	Description
TripleImpl(BlankNodeOrIRI subject, IRI predicate, RDFTerm object)	Construct Triple from its constituent parts.

Method Summary

Modifier and Type	Method	Description
boolean	equals(java.lang.Object obj)	Check it this Triple is equal to another Triple.
RDFTerm	getObject()	The object of this triple, which may be either a BlankNode, an IRI, or a Literal, which are represented in Commons RDF by the interface RDFTerm.
IRI	getPredicate()	The predicate IRI of this triple.
BlankNodeOrIRI	getSubject()	The subject of this triple, which may be either a BlankNode or an IRI, which are represented in Commons RDF by the interface BlankNodeOrIRI.
int	hashCode()	Calculate a hash code for this Triple.
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

subject

private final BlankNodeOrIRI subject

predicate

private final IRI predicate

object

private final RDFTerm object

Constructor Detail

TripleImpl

public TripleImpl(BlankNodeOrIRI subject,
                  IRI predicate,
                  RDFTerm object)

Construct Triple from its constituent parts.

The objects are not changed. All mapping of BNode objects is done in SimpleRDF.createTriple(BlankNodeOrIRI, IRI, RDFTerm).

Parameters:

subject - subject of triple

predicate - predicate of triple

object - object of triple

Method Detail

getSubject

public BlankNodeOrIRI getSubject()

Description copied from interface: Triple

The subject of this triple, which may be either a BlankNode or an IRI, which are represented in Commons RDF by the interface BlankNodeOrIRI.

Specified by:

getSubject in interface Triple

Specified by:

getSubject in interface TripleLike

Returns:

The subject BlankNodeOrIRI of this triple.

See Also:

RDF-1.1 Triple subject

getPredicate

public IRI getPredicate()

Description copied from interface: Triple

The predicate IRI of this triple.

Specified by:

getPredicate in interface Triple

Specified by:

getPredicate in interface TripleLike

Returns:

The predicate IRI of this triple.

See Also:

RDF-1.1 Triple predicate

getObject

public RDFTerm getObject()

Description copied from interface: Triple

The object of this triple, which may be either a BlankNode, an IRI, or a Literal, which are represented in Commons RDF by the interface RDFTerm.

Specified by:

getObject in interface Triple

Specified by:

getObject in interface TripleLike

Returns:

The object RDFTerm of this triple.

See Also:

RDF-1.1 Triple object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

hashCode

public int hashCode()

Description copied from interface: Triple

Calculate a hash code for this Triple.

The returned hash code MUST be equal to the result of Objects.hash(Object...) with the arguments Triple.getSubject(), Triple.getPredicate(), Triple.getObject().

This method MUST be implemented in conjunction with Triple.equals(Object) so that two equal Triples produce the same hash code.

Specified by:

hashCode in interface Triple

Overrides:

hashCode in class java.lang.Object

Returns:

a hash code value for this Triple.

See Also:

Object.hashCode(), Objects.hash(Object...)

equals

public boolean equals(java.lang.Object obj)

Description copied from interface: Triple

Check it this Triple is equal to another Triple.

Two Triples are equal if and only if their Triple.getSubject(), Triple.getPredicate() and Triple.getObject() are equal.

Implementations MUST also override Triple.hashCode() so that two equal Triples produce the same hash code.

Specified by:

equals in interface Triple

Overrides:

equals in class java.lang.Object

Parameters:

obj - Another object

Returns:

true if other is a Triple and is equal to this

See Also:

Object.equals(Object)