Returns OwlClass if the argument rdfsResource is an actual active class in an active model. It returns 0 in all other cases, i.e. this could mean the model is already closed, the class is inactive or removed or the session is closed. It could also mean it represents a handle to another resource, for example a property, instance or model.


public const string enginedll = @"engine.dll";

[DllImport(enginedll, EntryPoint = "IsClass")]
public static extern Int64 IsClass(Int64 rdfsResource);    

Property rdfsResource

Size: 64 bit / 8 byte (value)