Re: [dotNetRDF-Support] ontologyGraph.AllProperties does not retrieve DatatypeProperties

[Rob V. <rv...@do...>]

Hi Sura

Apologies but this appears to be a bug in how the API finds
DatatypeProperties, this has been filed as CORE-339 [1].  The bug is that
there is a typo in the constant for the URI for datatype properties meaning
it doesn't correctly match datatype properties.

We will get a fix made shortly and this will be available in the next
release, in the meantime you can use the following code to retrieve
DatatypeProperties:

foreach (OntologyProperty prop in
ontologyGraph.GetProperties(ontologyGraph.CreateUriNode(new
Uri(NamespaceMapper.OWL + "DatatypeProperty"))))
{
  Console.WriteLine(prop);
}

Apologies for the inconvenience,

Rob

[1] http://dotnetrdf.org/tracker/Issues/IssueDetail.aspx?id=339

From:  Sura Monday <sur...@ya...>
Reply-To:  Sura Monday <sur...@ya...>, dotNetRDF User Help and
Support <dot...@li...>
Date:  Monday, March 11, 2013 2:54 PM
To:  "dot...@li..."
<dot...@li...>
Subject:  [dotNetRDF-Support] ontologyGraph.AllProperties does not retrieve
DatatypeProperties

> Hi,
> I am using dotnetrdf 0.9.0, and am trying to retrieve the DatatypeProperties
> in my ontology.
> My ontology has DatatypeProperties, as well as ObjectProperties as shown
> below:
> 
> <owl:DatatypeProperty rdf:about="&ve;toName">
>         <rdfs:label xml:lang="en">toName</rdfs:label>
>         <rdfs:domain rdf:resource="&ve;CommunicationMessage"/>
>         <rdfs:range rdf:resource="&xsd;string"/>
>     </owl:DatatypeProperty>
> 
> 
> <owl:ObjectProperty rdf:about="&ve;isSituationOf">
>         <rdfs:label xml:lang="en">isSituationOf</rdfs:label>
>         <rdfs:domain rdf:resource="&ve;Situation"/>
>         <rdfs:subPropertyOf rdf:resource="&ve;isSnapshotPartOf"/>
>     </owl:ObjectProperty>
> 
> However, the below code fragment returns only ObjectProperties:
>  ontologyGraph = new OntologyGraph();
>  FileLoader.Load(ontologyGraph, "ve-ontology.owl");
>                 
>  foreach (OntologyProperty prop in ontologyGraph.AllProperties)
>        Console.WriteLine(prop);
> 
> Can someone please point me out the way to retrieve the DatatypeProeprties in
> my ontology?
> 
> Thanks in advance
> /Sura
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