source: Dev/trunk/classes/QuestionRDFWriter.php @ 82

<?php
class QuestionRDFWriter 
{
    protected $model;

    protected $filePath = 'data/questions/';

    public function __construct()
    {
        // Create empty MemModel
        $factory = new ModelFactory();
        $this->model = $factory->getDefaultModel();

        if (!is_dir($this->filePath))
            mkdir($this->filePath);
        
        if(file_exists($this->filePath.'questions.rdf'))
            $this->model->load($this->filePath.'questions.rdf');
    }   

    public function saveQuestions()
    {   
        $this->model->saveAs($this->filePath.'questions.rdf','rdf');
    }
    
    public function createQuestion($qTitle,$qDescription,$qType,$qID,$qCode,$qCategory,$qAnswers)
    {
        $resourceQuestion = new Resource(QUESTION.'/'.$qID);

        $resourceQuestionType = new Resource(QUESTION);
        $predicateRType = new Resource(RTYPE);
        $this->model->add(new Statement($resourceQuestion,$predicateRType,$resourceQuestionType));

        $predicateTitle = new Resource(TITLE);          
        $questionTitle = new Literal($qTitle);
        $this->model->add(new Statement($resourceQuestion,$predicateTitle,$questionTitle));     

        $predicateDescription = new Resource(DESCRIPTION);
        $questionDescription = new Literal($qDescription);
        $this->model->add(new Statement($resourceQuestion,$predicateDescription,$questionDescription));         

        $predicateQType = new Resource(QTYPE);
        $resourceQuestionType = new Literal($qType);
        $this->model->add(new Statement($resourceQuestion,$predicateQType,$resourceQuestionType));

        $predicateUniqueID = new Resource(UID);
        $questionUID = new Literal($qID);
        $this->model->add(new Statement($resourceQuestion,$predicateUniqueID,$questionUID));
        
        $predicateQCode = new Resource(QCODE);
        $questionQCode = new Literal($qCode);
        $this->model->add(new Statement($resourceQuestion,$predicateQCode,$questionQCode));
        
        $predicateQCategory = new Resource(QCATEGORY);
        $questionQCategory = new Literal($qCategory);
        $this->model->add(new Statement($resourceQuestion,$predicateQCategory,$questionQCategory));

        foreach($qAnswers as $answer)
        {               
            $answerID = md5( uniqid(rand(), true) );    
            $resourceAnswer = new Resource(ANSWER.'/'.$answerID);

            $resourceAnswerType = new Resource(ANSWER);
            $predicateRType = new Resource(RTYPE);
            $this->model->add(new Statement($resourceAnswer,$predicateRType,$resourceAnswerType));      

            $predicateUniqueID = new Resource(UID);
            $answerUID = new Literal($answerID);
            $this->model->add(new Statement($resourceAnswer,$predicateUniqueID,$answerUID));                    

            $answerTitle = new Literal($answer['Title']);
            $this->model->add(new Statement($resourceAnswer,$predicateTitle,$answerTitle));

            $answerDescription = new Literal($answer['Description']);
            $this->model->add(new Statement($resourceAnswer,$predicateDescription,$answerDescription));

            $predicateAnswer = new Resource(HAS_ANSWER);        
            $this->model->add(new Statement($resourceQuestion,$predicateAnswer,$resourceAnswer));
        }       
    }
}
?>