/// <summary>
/// Generate a DTMI
/// </summary>
/// <param name="resource"></param>
/// <returns>Returns a DTMI Id</returns>
private static string GenerateDTMI(OntologyResource resource)
{
string id = null;
try
{
string nodeType = resource.Resource.NodeType.ToString();
if (nodeType == "Uri")
{
//Get the IRI
id = resource.Resource.ToString();
// Find the suffix after the # in the IRI when pattern is https://brickschema.org/schema/1.1/Brick#Equipment
if (id.Contains("#"))
{
int index = id.LastIndexOf("#");
id = id.Substring(index + 1);
}
else // Or find the suffix after the last / in the IRI when pattern is http://webprotege.stanford.edu/Pizza
{
int index = id.LastIndexOf("/");
id = id.Substring(index + 1);
}
id = $"dtmi:{_dtmiPrefix}:{id};{_modelVersion}";
// Check to ensure id is <= 128 characters
if (id.Count() > 128)
{
throw new System.Exception($"{id} is > 128 characters.");
}
}
else
{
// Console.WriteLine($"Not a URI -> {resource.ToString()}");
}
}
catch (Exception e)
{
Console.WriteLine($"Could not generate DTMI for {resource.ToString()}");
Console.WriteLine($"{e.Message}");
id = null;
}
return(id);
}
/// <summary>
/// Get a label for an ontology resource, if it exists; else get the full URI.
/// </summary>
/// <param name="ontologyResource"></param>
/// <returns></returns>
internal static string GetLabel(OntologyResource ontologyResource)
{
string enLabel = "";
// Iterate over all resource labels
foreach (ILiteralNode label in ontologyResource.Label)
{
// If a language-agnostic label is found, return it immediately
if (label.Language == "")
{
return(label.Value);
}
// If an english-language label is found, store it for later
if (label.Language == "en")
{
enLabel = label.Value;
}
}
// Fallback option -- use the English label
if (enLabel != "")
{
return(enLabel);
}
else
{
// Fallback to the fallback option -- use resource IRI, either by extracting local name
// (if it is a URI node) or using whatever representation the resource provides
if (ontologyResource.Resource.NodeType == NodeType.Uri)
{
IUriNode uriNode = (IUriNode)ontologyResource.Resource;
return(GetLocalName(uriNode.Uri));
}
else
{
return(ontologyResource.ToString());
}
}
}