def extractModule(self, mod_iri):
"""
Extracts a module that is a subset of the entities in the source
ontology. The result is returned as an Ontology object.
mod_iri: The IRI for the extracted ontology module. Can be either an
IRI object or a string containing a relative IRI, prefix IRI, or
full IRI.
"""
modont = Ontology(self.ontology.ontman.createOntology())
modont.setOntologyID(mod_iri)
# Do the syntactic locality extraction. Only do the extraction if the
# signature set is non-empty. The OWL API module extractor will
# produce a non-empty module even for an empty signature set.
if len(self.signatures[methods.LOCALITY]) > 0:
slme = SyntacticLocalityModuleExtractor(self.ontology.ontman,
self.owlont,
ModuleType.STAR)
mod_axioms = slme.extract(self.signatures[methods.LOCALITY])
for axiom in mod_axioms:
modont.addEntityAxiom(axiom)
# Do all single-entity extractions.
self._extractSingleEntities(self.signatures[methods.SINGLE], modont)
# Add all saved axioms.
for axiom in self.saved_axioms:
modont.addEntityAxiom(axiom)
# Remove any entities that should be excluded from the final module.
for ent in self.excluded_entities:
modont.removeEntity(ent, remove_annotations=True)
# Add an annotation for the source of the module.
sourceIRI = None
ontid = self.owlont.getOntologyID()
if ontid.getVersionIRI().isPresent():
sourceIRI = ontid.getVersionIRI().get()
elif ontid.getOntologyIRI().isPresent():
sourceIRI = ontid.getOntologyIRI().get()
if sourceIRI is not None:
modont.setOntologySource(sourceIRI)
return modont
