/// <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 preliminary check on usage of BASE properties
if (!RDFOntologyChecker.CheckReservedProperty(objectProperty))
{
//Enforce taxonomy checks before adding the assertion
//Creation of transitive cycles is not allowed (OWL-DL)
if (RDFOntologyChecker.CheckTransitiveAssertionCompatibility(this, aFact, objectProperty, bFact))
{
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));
}
}
else
{
//Raise warning event to inform the user: Assertion relation cannot be added to the data because usage of BASE reserved properties compromises the taxonomy consistency
RDFSemanticsEvents.RaiseSemanticsWarning(String.Format("Assertion relation between fact '{0}' and fact '{1}' cannot be added to the data because usage of BASE reserved properties compromises the taxonomy consistency.", aFact, bFact));
}
}
return(this);
}
/// <summary>
/// Adds the "ontologyFact -> rdf:type -> ontologyClass" relation to the data.
/// </summary>
public RDFOntologyData AddClassTypeRelation(RDFOntologyFact ontologyFact,
RDFOntologyClass ontologyClass)
{
if (ontologyFact != null && ontologyClass != null)
{
//Enforce preliminary check on usage of BASE classes
if (!RDFOntologyChecker.CheckReservedClass(ontologyClass))
{
//Enforce taxonomy checks before adding the ClassType relation
if (RDFOntologyChecker.CheckClassTypeCompatibility(ontologyClass))
{
this.Relations.ClassType.AddEntry(new RDFOntologyTaxonomyEntry(ontologyFact, RDFVocabulary.RDF.TYPE.ToRDFOntologyObjectProperty(), ontologyClass));
}
else
{
//Raise warning event to inform the user: ClassType relation cannot be added to the data because only plain classes can be explicitly assigned as class types of facts
RDFSemanticsEvents.RaiseSemanticsWarning(String.Format("ClassType relation between fact '{0}' and class '{1}' cannot be added to the data because only plain classes can be explicitly assigned as class types of facts.", ontologyFact, ontologyClass));
}
}
else
{
//Raise warning event to inform the user: ClassType relation cannot be added to the data because usage of BASE reserved classes compromises the taxonomy consistency
RDFSemanticsEvents.RaiseSemanticsWarning(String.Format("ClassType relation between fact '{0}' and class '{1}' cannot be added to the data because because usage of BASE reserved classes compromises the taxonomy consistency.", ontologyFact, ontologyClass));
}
}
return(this);
}
/// <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 (RDFOntologyChecker.CheckDifferentFromCompatibility(this, aFact, bFact))
{
this.Relations.DifferentFrom.AddEntry(new RDFOntologyTaxonomyEntry(aFact, RDFVocabulary.OWL.DIFFERENT_FROM.ToRDFOntologyObjectProperty(), bFact));
this.Relations.DifferentFrom.AddEntry(new RDFOntologyTaxonomyEntry(bFact, RDFVocabulary.OWL.DIFFERENT_FROM.ToRDFOntologyObjectProperty(), 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 "ontologyFact -> datatypeProperty -> ontologyLiteral" relation to the data
/// </summary>
public RDFOntologyData AddAssertionRelation(RDFOntologyFact ontologyFact,
RDFOntologyDatatypeProperty datatypeProperty,
RDFOntologyLiteral ontologyLiteral)
{
if (ontologyFact != null && datatypeProperty != null && ontologyLiteral != null)
{
//Enforce preliminary check on usage of BASE properties
if (!RDFOntologyChecker.CheckReservedProperty(datatypeProperty))
{
this.Relations.Assertions.AddEntry(new RDFOntologyTaxonomyEntry(ontologyFact, datatypeProperty, ontologyLiteral));
this.AddLiteral(ontologyLiteral);
}
else
{
//Raise warning event to inform the user: Assertion relation cannot be added to the data because usage of BASE reserved properties compromises the taxonomy consistency
RDFSemanticsEvents.RaiseSemanticsWarning(String.Format("Assertion relation between fact '{0}' and literal '{1}' cannot be added to the data because usage of BASE reserved properties compromises the taxonomy consistency.", ontologyFact, ontologyLiteral));
}
}
return(this);
}