Package com.apicatalog.rdf.primitive

Class Quad

java.lang.Object

com.apicatalog.rdf.primitive.Triple

com.apicatalog.rdf.primitive.Quad

All Implemented Interfaces:

RdfQuad, RdfTerm, RdfTriple

public class Quad
extends Triple
implements RdfQuad

Field Summary

Fields

Modifier and Type	Field	Description
(package private) RdfResource	graphName

Fields inherited from class com.apicatalog.rdf.primitive.Triple

object, predicate, subject

Constructor Summary

Constructors

Constructor	Description
Quad(RdfResource subject, RdfResource predicate, RdfTerm object, RdfResource graphName)

Method Summary

Modifier and Type	Method	Description
boolean	equals(java.lang.Object obj)	Compares this RDF term to the specified object.
java.util.Optional<RdfResource>	graphName()	Returns the optional graph name for this N-Quad statement.
int	hashCode()	Returns a hash code value for this RDF term.
static RdfQuad	of(RdfResource subject, RdfResource predicate, RdfTerm object, RdfResource graphName)
java.lang.String	toString()	Returns a string representation of this RDF term.

Methods inherited from class com.apicatalog.rdf.primitive.Triple

object, of, predicate, printTriple, printTripleTerm, subject

Methods inherited from class java.lang.Object

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

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

asLiteral, asResource, isLiteral, isResource

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

asTriple, isTriple, object, predicate, subject

Field Detail

graphName

final RdfResource graphName

Constructor Detail

Quad

Quad(RdfResource subject,
     RdfResource predicate,
     RdfTerm object,
     RdfResource graphName)

Method Detail

of

public static RdfQuad of(RdfResource subject,
                         RdfResource predicate,
                         RdfTerm object,
                         RdfResource graphName)

graphName

public java.util.Optional<RdfResource> graphName()

Description copied from interface: RdfQuad

Returns the optional graph name for this N-Quad statement.

If the N-Quad is part of a named graph, this method returns an Optional containing the graph name. Otherwise, it returns Optional.empty() if no graph name is specified.

Specified by:

graphName in interface RdfQuad

Returns:

an Optional containing the graph name if present, or Optional.empty() if not set

toString

public java.lang.String toString()

Description copied from interface: RdfTerm

Returns a string representation of this RDF term.

Specified by:

toString in interface RdfTerm

Overrides:

toString in class Triple

Returns:

a string describing this RDF term.

hashCode

public int hashCode()

Description copied from interface: RdfTerm

Returns a hash code value for this RDF term.

Specified by:

hashCode in interface RdfTerm

Overrides:

hashCode in class Triple

Returns:

a hash code consistent with RdfTerm.equals(Object).

equals

public boolean equals(java.lang.Object obj)

Description copied from interface: RdfTerm

Compares this RDF term to the specified object. Implementations must override this method to provide equality checks appropriate to the term type.

Specified by:

equals in interface RdfTerm

Overrides:

equals in class Triple

Parameters:

obj - the object to compare with this term.

Returns:

true if the specified object is equal to this term; false otherwise.