owlcollab / owlcollab/owltools

Triggering an update of the cached edges in OWLGraphWrapper

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#49 7 comments 0 reactions 0 assignees View on GitHub

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Java
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Description

From TheITGuy...@gmail.com on February 06, 2013 06:13:25

Additions/removal of OWLSubClassOfAxiom in an ontology are not seen by the OWLGraphWrapper container. Might be nice to add a method to trigger an update of the cached edges.

Example:

OWLSubClassOfAxiom ax = factory.getOWLSubClassOfAxiom(myOWLClass1, myOWLClass2);
AddAxiom addAx = new AddAxiom(myWrapper.getSourceOntology(), ax);
myWrapper.getManager().applyChange(addAx);
for (OWLGraphEdge edge: myWrapper.getCompleteEdgesBetween(myClass, myClass2)) {
System.out.println(edge);//no edges found here
}
//force an update, but throw checked Exceptions, and looks like a hack.
myWrapper = new OWLGraphWrapper(myWrapper.getSourceOntology());
for (OWLGraphEdge edge: myWrapper.getCompleteEdgesBetween(myClass, myClass2)) {
System.out.println(edge);//the edge is correctly displayed
}

Original issue: http://code.google.com/p/owltools/issues/detail?id=49

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with OWLGraphWrapper, especially getCompleteEdgesBetween and the source-ontology change flow shown in the example. Reproduce the AddAxiom case and trace why the cached edges remain unchanged; done means a supported update path makes the newly added subclass edge visible without reconstructing the wrapper.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
backend-api-design
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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