[Obo-owltools] Issue 66 in owltools: Methods get...Edges return OWLGraphEdges with no ontology attribute set

[<owl...@go...>]

Status: New
Owner: ----
Labels: Type-Defect Priority-Medium

New issue 66 by frederic...@gmail.com: Methods get...Edges return  
OWLGraphEdges with no ontology attribute set
http://code.google.com/p/owltools/issues/detail?id=66

Hi,

OWLGraphEdges returned by method such as getIncomingEdges or  
getOutgoingEdges have no ontology set (getOntology() returns null).

This is problematic when trying to remove or add axioms based on such  
OWLGraphEdges. For instance:

OWLSubClassOfAxiom ax = factory.getOWLSubClassOfAxiom((OWLClassExpression)  
edge.getSource(), (OWLClassExpression) edgeToTargetExpression(edge));
RemoveAxiom remove = new RemoveAxiom(edge.getOntology(), ax);
manager.applyChange(remove);
//fail with exception:
//org.semanticweb.owlapi.model.ImmutableOWLOntologyChangeException: Cannot  
apply changes to immutable ontology: null


It would be great if the returned OWLGraphEdges had their ontology  
attribute set.



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