Re: [Rdfapi-php-interest] writing class instance as RDF

[Richard C. <ri...@cy...>]

AJ,

Note that <rdf:Description ...> with an <rdf:type  
rdf:resource="...Experiment" /> inside is exactly equivalent to  
<exp:Experiment ...>. The latter is just a shorthand for the former.

That said, when you add an rdf:type statement with value  
exp:Experiment to the instance, you should get the output you want.  
Here's some code to get you started:

<?php
define("RDFAPI_INCLUDE_DIR", "./rdfapi-php/api/");
include(RDFAPI_INCLUDE_DIR . "RdfAPI.php");

$model = ModelFactory::getDefaultModel();
$model->addNamespace('ex', 'http://example.org/');
$a = new Resource("http://example.org/a");
$type = new Resource("http://www.w3.org/1999/02/22-rdf-syntax-ns#type");
$b = new Resource("http://example.org/b");
$statement = new Statement($a, $type, $b);
$model->add($statement);
echo $model->writeRdfToString();
?>

Best,
Richard


On 5 Jun 2006, at 08:13, AJ Chen wrote:

> I created a ResModel for an instance of class Experiment (from my  
> own ontology called "exp") and wrote it into RDF file using $model- 
> >saveAs($save_file). In the RDF file, the class instance started with
> <rdf:Description rdf:ID="i">
>
> How do I tell the resmodel that it's an instance of Experiment  
> class? I want to have the RDF writen as
> <rdf:RDF
>     <exp:Experiment rdf:ID="i">
>     ...
>
> Thanks,
> AJ
>
>
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