Re: [Rdfapi-php-interest] How to avoid duplicates rdf entities?

[Tom H. <tom...@gm...>]

Hey Mik,

With the "node" property in your own namespace it's quite hard to work
out what you're actually trying to say. Any chance you can show us an
example of the triples you'd like to generate, perhaps as n-triples,
and then it'll be easier to debug the PHP.

It's probably also worth using CamelCase for class names in your
ontology, as this is a widely used convention and makes the RDF more
readable.

Cheers,

Tom.

On 01/04/2008, Michele Pasin <mic...@gm...> wrote:
> Hi all,
>
> I'm getting this error with the MemModel - when adding properties to a
> resource which has been previously created, instead of getting the rdf:About
> ...ResourceID  construct, the output is rdf:ID='ResourceID'. Not sure
> whether it's an error or not, but the w3cRDF-validator apparently says so:
>
>
>
> Error: {W105} Redefinition of ID: node_node1[Line = 20, Column = 38]
> Error: {W105} Previous definition of 'node_node1'.[Line = 16, Column = 32]
>
>
> Here's the complete RDF code I've generated:
>
> ;;;;;;;;;;;;;;;;;;;;;;;;
> <?xml version="1.0" encoding="UTF-8" ?>
>  <!-- Generated by RdfSerializer.php from RDF RAP.
> #
> http://www.wiwiss.fu-berlin.de/suhl/bizer/rdfapi/index.html
> !-->
>
> <rdf:RDF
>     xml:base="http://cohereweb.net/ontology/cohere.owl#"
>    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
>     xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
>    xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
>     xmlns:owl="http://www.w3.org/2002/07/owl#"
>    xmlns:dc="http://purl.org/dc/elements/1.1/"
>    xmlns:dcterms="http://purl.org/dc/terms/"
>     xmlns:vcard="http://www.w3.org/2001/vcard-rdf/3.0#"
>    xmlns:ns1="http://cohereweb.net/ontology/cohere.owl#">
>
> <ns1:node rdf:ID="node1"/>
>
> <ns1:cohere_user rdf:ID="michele"/>
>
> <rdf:Description rdf:ID="node1">
>    <ns1:has_creator rdf:resource="#michele"/>
>  </rdf:Description>
>
> </rdf:RDF>
> ;;;;;;;;;;;;;;;;;;;;;;;;;;
>
>
>
> And here's the PHP code:
>
>
> ................
>
>
>
>
>
>
>
>
>
>
> //test function
>
> function get_result2 ($nodeID, $nodeName, $nodeDescription, $authorID) {
>
>         //load all it's necessary
>
>  loadRapLibraries("../import/rdfapi-php/api/");
>
>
>
>
>         //create a new model
>
>  $model = getCohereModel();
>
>
>
>          //create resources using my own vocabulary
>
>  $newnode = new Resource(COHERE_NS . $nodeID);
>
>  $newauthor = new Resource(COHERE_NS . $authorID);
>
>
>
>          // create statements
>
>  $statement1 = new Statement ($newnode, RDF_RES::TYPE(),
> COHERE_RES::NODE());
>
>
>
>
>  $statement2 = new Statement ($newauthor, RDF_RES::TYPE(),
> COHERE_RES::COHERE_USER());
>
>
>
>  $statement3 = new Statement ($newnode, COHERE_RES::HAS_CREATOR(),
> $newauthor);
>
>
>
>          //add the statements
>
>  $model->addWithoutDuplicates($statement1);
>
>
>
>
>  $model->addWithoutDuplicates($statement2);
>
>
>
>  $model->addWithoutDuplicates($statement3);
>
>
>
>  $ret = $model->writeAsHtml();
>
>  return $ret;
>
> }
>
>
>
>
>
>
>  echo get_result2("node1", "myNode", "myDesc", "michele");
>
>
>
>
>
>
>
>
> ................
>
>
>
>
>
>
>
> I can't figure out where the mistake is - can anybody help please?
> Thanks a lot,
> mikele
>
>
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