/**
* Returns the IRI of the resource if it has one, or else Object's toString() value. This method
* uses the IRIMap in the currently active KnowledgeBase.
*
* @return the String of the resource
*/
@Override
public String toString() {
Optional<IRI> iri = SemanticSystem.getActiveKnowledgeBase().getIRIMap().getIRI(this);
String str;
if (iri.isPresent()) {
str = iri.get().toString();
} else {
str = super.toString();
}
return str;
}
/**
* Constructs the resource with an IRI.
*
* @param iri the IRI for the resource
* @throws IRIInUseException if the IRI is already in use by another resource
* @throws NullPointerException if the argument "iri" is null
*/
public ResourceNoAttributes(IRI iri) throws IRIInUseException, NullPointerException {
// remaining code is in ResourceInitializationAspect
if (iri == null) {
throw new NullPointerException("The argument 'iri' cannot be null");
}
IRIMap iriMap = SemanticSystem.getIRIMap();
if (iriMap.getResource(iri).isPresent()) {
throw new IRIInUseException("The IRI " + iri + " is already in use.");
}
iriMap.setIRI(this, iri);
}