Re: [Rdfapi-php-interest] Double rdf:type gives bug in RAP netapi?

[Benjamin N. <bn...@ap...>]

On 23.08.2006 14:27:37, Richard Cyganiak wrote:
>Vowlidator seems to dislike the fact that RAP uses rdf:ID twice with  
>the same value. That's allowed by the specs, although admittedly you  
>could argue that it's bad style. (And indeed it's just a warning in  
>Vowlidator, not an error.)
AFAIK, redundant node rdf:IDs are not allowed in a shared 
scope/document. It's similar to the id attribute in html.
It's a bug in both RAP and Vowlidator, the latter should
issue an error, not a warning ;)

hth,
ben

>
>So it's not a RAP bug, but it's an indication that Vowlidator is a  
>bit too picky :-)
>
>You can safely ignore the warning.
>
>Yours,
>Richard
>
>
>On 23 Aug 2006, at 13:28, Onno Paap wrote:
>
>> Dear rdfapi-php team,
>> The following examples are snippets from much larger OWL constructs.
>> They have no meaning by themselves, just as illustration of the way
>> the RAP netapi handles this.
>> My question: does this example show an RAP bug?
>> Onno Paap
>>
>> This piece of OWL code has no errors in Vowlidator:
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>> <rdf:RDF
>> xmlns:rdf=3D"http://www.w3.org/1999/02/22-rdf-syntax-ns#"
>> xmlns:owl=3D"http://www.w3.org/2002/07/owl#"
>> xml:base=3D"http://www.15926.org/2006/02/onnopaap1">
>> <owl:Class rdf:ID=3D"AbstractObject">
>> <rdf:type rdf:resource=3D"#ClassOfAbstractObject"/>
>> </owl:Class>
>> <owl:Class rdf:ID=3D"ClassOfAbstractObject"/>
>> </rdf:RDF>
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>
>> Loaded in RAP gives 3 triples:
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>> 1.
>>  Resource: http://www.15926.org/2006/02/onnopaap1#AbstractObject
>>  RDF Node: rdf:type
>>  RDF Node: owl:Class
>> 2.
>>  Resource: http://www.15926.org/2006/02/onnopaap1#AbstractObject
>>  RDF Node: rdf:type
>>  Resource: http://www.15926.org/2006/02/ 
>> onnopaap1#ClassOfAbstractObject
>> 3.
>>  Resource: http://www.15926.org/2006/02/ 
>> onnopaap1#ClassOfAbstractObject
>>  RDF Node: rdf:type
>>  RDF Node: owl:Class
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>
>> The RAP netapi makes this out of it:
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>> <?xml version=3D"1.0" encoding=3D"UTF-8" ?>
>> <!--
>>  Generated by RdfSerializer.php from RDF RAP.
>> # http://www.wiwiss.fu-berlin.de/suhl/bizer/rdfapi/index.html !
>> -->
>> <rdf:RDF xml:base=3D"http://www.15926.org/2006/02/onnopaap1#"
>>  xmlns:rdf=3D"http://www.w3.org/1999/02/22-rdf-syntax-ns#"
>>  xmlns:owl=3D"http://www.w3.org/2002/07/owl#"
>>  xmlns:ns1=3D"http://www.15926.org/2006/02/onnopaap1#">
>> <owl:Class rdf:ID=3D"AbstractObject" />
>> <ns1:ClassOfAbstractObject rdf:ID=3D"AbstractObject" />
>> <owl:Class rdf:ID=3D"ClassOfAbstractObject" />
>> </rdf:RDF>
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>
>> Which gives errors in Vowlidator:
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>> [1] WARNING - Parser Indication: http://www.15926.org/2006/02/ 
>> onnopaap1#[15:53]:
>>  {W105} Redefinition of ID: AbstractObject
>>
>> [2] WARNING - Parser Indication: http://www.15926.org/2006/02/ 
>> onnopaap1#[13:37]:
>>  {W105} Previous definition of 'AbstractObject'.
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>
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>
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