/// <summary>
/// Gets a short name representation for an ontology, based on the last segment
/// of the ontology IRI or (in the case of anonymous ontologies) the ontology hash.
/// Useful for qname prefixes.
/// </summary>
/// <param name="ontology"></param>
/// <returns></returns>
public static string GetShortName(this Ontology ontology)
{
// Fallback way of getting a persistent short identifier in the
// (unlikely?) case that we are dealing w/ an anonymous ontology
if (!ontology.IsNamed())
{
return(ontology.GetHashCode().ToString(invariantCulture));
}
// This is a simple string handling thing
string ontologyUriString = ontology.GetIri().ToString();
// Trim any occurences of entity separation characters
if (ontologyUriString.EndsWith("/", StringComparison.Ordinal) || ontologyUriString.EndsWith("#", StringComparison.Ordinal))
{
char[] trimChars = { '/', '#' };
ontologyUriString = ontologyUriString.Trim(trimChars);
}
// Get the last bit of the string
ontologyUriString = ontologyUriString.Substring(ontologyUriString.LastIndexOf('/') + 1);
// If the string contains dots, treat them as file ending delimiter and get rid of them
// one at a time
while (ontologyUriString.Contains('.', StringComparison.Ordinal))
{
ontologyUriString = ontologyUriString.Substring(0, ontologyUriString.LastIndexOf('.'));
}
return(ontologyUriString);
}
/// <summary>
/// Gets the version IRI of the ontology, if it is defined, or the ontology
/// IRI if it is not. If neither is defined (i.e. the ontology is anonymous),
/// throws an exception.
/// </summary>
/// <param name="ontology"></param>
/// <returns></returns>
public static Uri GetVersionOrOntologyIri(this Ontology ontology)
{
if (ontology.HasVersionIri())
{
return(ontology.GetVersionIri());
}
return(ontology.GetIri());
}