RdfQuad

All Superinterfaces:

RdfTerm, RdfTriple

All Known Implementing Classes:

Quad
```
public interface RdfQuad
extends RdfTriple
```
Represents an immutable N-Quad statement in the RDF data model.
An N-Quad extends the RDF triple by including an optional graph name, which provides context or scoping for the triple. In contrast to a simple RDF triple, which only consists of a subject, predicate, and object, an N-Quad includes an additional graph name to specify the graph within which the triple belongs.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  java.util.Optional<RdfResource> graphName()
  Returns the optional graph name for this N-Quad statement.
  - Methods inherited from interface com.apicatalog.rdf.model.RdfTerm
    asLiteral, asResource, equals, hashCode, isLiteral, isResource, toString
  - Methods inherited from interface com.apicatalog.rdf.model.RdfTriple
    asTriple, isTriple, object, predicate, subject

- Method Detail
  - graphName
```
java.util.Optional<RdfResource> graphName()
```
    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.
    
    Returns:
    
    an Optional containing the graph name if present, or Optional.empty() if not set