Re: [OWLAPI-developer] How to get the annotation of an OWLAxiom, particularly Equivalent Class

[Ignazio P. <ipa...@gm...>]

2011/6/27 An C. Tran <tca...@gm...>:
> Hi all,
>
> Someone can help me with this:
>
> In my example, given an "OWLAxiom eq" is an EquivalentClass, the following
> segment of code:
>              System.out.println("\n***" + eq.getAxiomType() + ":");
>              System.out.println("Annotation: " + eq.getAnnotations());
>              System.out.println(renderer.render(eq));
>

Hi,
I tried your code (with some changes to remove calls to Pellet) with
the latest OWL API and I get this output:

Reading file file:///Users/ignazio/Downloads/abd.muse.massey.ac.nz.owl...Ontology
loaded

***EquivalentClasses:
Annotation: [Annotation(rdfs:label "DurationAbnormality_Showering"^^xsd:string)]
DurationAbnormality EquivalentTo Showering and (activityHasDuration some
(Duration and ((hasDurationValue some double[> 15]) or
(hasDurationValue some double[< 5])))) and (activityHasStarttime some
Winter)

***EquivalentClasses:
Annotation: [Annotation(rdfs:label "DurationAbnormality_Toileting"^^xsd:string)]
DurationAbnormality EquivalentTo Toileting and (activityHasDuration some
(Duration and (hasDurationValue some double[> 15])))

***EquivalentClasses:
Annotation: [Annotation(rdfs:label "EquivalentWinter_Ann")]
Winter EquivalentTo Timepoint and (hasMonthValue some double[>= 5])
and (hasMonthValue some double[<= 8])


for this code:

public class Explanation_EquiClass_Lite {
	private static final String file =
"file:///Users/ignazio/Downloads/abd.muse.massey.ac.nz.owl";
	private static OWLObjectRenderer renderer = new
ManchesterOWLSyntaxOWLObjectRendererImpl(); //new
DLSyntaxObjectRenderer();

	public static void main(String[] args) throws Exception {
		System.out.print("Reading file " + file + "...");
		OWLOntologyManager manager = OWLManager.createOWLOntologyManager();
		OWLOntology ontology = manager.loadOntology(IRI.create(file));
		OWLDataFactory factory = manager.getOWLDataFactory();
		System.out.println("Ontology loaded");
		OWLAnnotationProperty label = factory.getRDFSLabel();
		for (OWLAxiom e : ontology.getAxioms()) {
			Set<OWLAnnotation> labels = e.getAnnotations(label);
			if (labels.size() > 0) {
				System.out.println("\n***" + e.getAxiomType() + ":");
				System.out.println("Annotation: " + labels);
				System.out.println(renderer.render(e));
			}
		}
	}
}


I assume you're using Pellet 2.2.2 and the OWL API which ships with
it, which is from March 2010 IIRC. There might be bugs in that version
of the OWL API, or Pellet might be returning the axioms stripped of
the annotations. You can try Pellet with the latest release (3.2.3),
if the bug is in the OWL API that should fix it.
HTH,
I.

> produces the following result:
>       ***EquivalentClasses:
>       Annotation: []
>       DurationAbnormality EquivalentTo Showering and ......
>
> The annotation is always empty while I assigned annotation for this
> EquivalentClass before.
> However, it runs well for classes.
>
> I attached my ontology and java code for your checking.
>
>
> Cheers,
> An.
>
>
>
>
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