/// <summary>
/// Adds the "aFact -> owl:differentFrom -> bFact" relation to the data
/// </summary>
public RDFOntologyData AddDifferentFromRelation(RDFOntologyFact aFact,
RDFOntologyFact bFact)
{
if (aFact != null && bFact != null && !aFact.Equals(bFact))
{
//Enforce taxonomy checks before adding the differentFrom relation
if (!RDFBASEOntologyReasoningHelper.IsSameFactAs(aFact, bFact, this))
{
this.Relations.DifferentFrom.AddEntry(new RDFOntologyTaxonomyEntry(aFact, RDFBASEOntology.Instance.Model.PropertyModel.SelectProperty(RDFVocabulary.OWL.DIFFERENT_FROM.ToString()), bFact));
this.Relations.DifferentFrom.AddEntry(new RDFOntologyTaxonomyEntry(bFact, RDFBASEOntology.Instance.Model.PropertyModel.SelectProperty(RDFVocabulary.OWL.DIFFERENT_FROM.ToString()), aFact).SetInference(RDFSemanticsEnums.RDFOntologyInferenceType.API));
}
else
{
//Raise warning event to inform the user: DifferentFrom relation cannot be added to the data because it violates the taxonomy consistency
RDFSemanticsEvents.RaiseSemanticsWarning(String.Format("DifferentFrom relation between fact '{0}' and fact '{1}' cannot be added to the data because it violates the taxonomy consistency.", aFact, bFact));
}
}
return(this);
}
/// <summary>
/// Adds the "aFact -> objectProperty -> bFact" relation to the data
/// </summary>
public RDFOntologyData AddAssertionRelation(RDFOntologyFact aFact,
RDFOntologyObjectProperty objectProperty,
RDFOntologyFact bFact)
{
if (aFact != null && objectProperty != null && bFact != null)
{
//Enforce taxonomy checks before adding the assertion
//Even if legal, we don't permit creation of transitive cycles!!
if (!RDFBASEOntologyReasoningHelper.IsTransitiveAssertionOf(bFact, objectProperty, aFact, this))
{
this.Relations.Assertions.AddEntry(new RDFOntologyTaxonomyEntry(aFact, objectProperty, bFact));
}
else
{
//Raise warning event to inform the user: Assertion relation cannot be added to the data because it violates the taxonomy transitive consistency
RDFSemanticsEvents.RaiseSemanticsWarning(String.Format("Assertion relation between fact '{0}' and fact '{1}' with transitive property '{2}' cannot be added to the data because it would violate the taxonomy consistency (transitive cycle detected).", aFact, bFact, objectProperty));
}
}
return(this);
}
