<?php

// Include RAP Library to write RDF files
define("RDFAPI_INCLUDE_DIR", "rdfapi/");
include(RDFAPI_INCLUDE_DIR . "RDFAPI.php");

class SurveyRDFReader
{
	var $model;
	
	var $resourceURI = 'http:/www.survey.tool/';
	
	public function SurveyRDFReader()
	{
        // Create empty MemModel
		$factory = new ModelFactory();
		$this->model = $factory->getDefaultModel();	
	}
	
	public function loadSurvey($sTitle)
	{
		$this->model->load('surveys/'.$sTitle.'.rdf');
	}
	
	public function readSurveyTitle()
	{
		$querystring = '
			PREFIX uri: <' . $this->resourceURI . '>
			SELECT ?surveyTitle 
			WHERE { uri:Survey uri:Title ?surveyTitle }';
			
		$result = $this->model->sparqlQuery($querystring);
		
		return $result;
	}
	
		public function readSurveyDescription()
	{
		$querystring = '
			PREFIX uri: <' . $this->resourceURI . '>
			SELECT ?surveyDescription 
			WHERE { uri:Survey uri:Description ?surveyDescription }';
			
		$result = $this->model->sparqlQuery($querystring);
		
		return $result;
	}
}

?>