source: Dev/trunk/classes/SurveyRDFWriter.php @ 26

<?php

class SurveyRDFWriter 
{
        var $model;
                
        var $resourceSurvey;
        var $surveyUID;
        
    public function __construct($surveyUID)
    {
        // Create empty MemModel
                $factory = new ModelFactory();
                $this->model = $factory->getDefaultModel();
                
                $this->surveyUID = $surveyUID;
                
    }
        
        public function createSurvey($sTitle, $sDescription)
        {               
                $this->resourceSurvey = new Resource(SURVEY.'/'.$this->surveyUID);
                
                $resourceSurveyType = new Resource(SURVEY);
                $predicateRType = new Resource(RTYPE);
                $this->model->add(new Statement($this->resourceSurvey,$predicateRType,$resourceSurveyType));
                
                $literalSurveyID = new Literal($this->surveyUID);
                $predicateUniqueID = new Resource(UID);
                $this->model->add(new Statement($this->resourceSurvey,$predicateUniqueID,$literalSurveyID));
                
                $predicateTitle = new Resource(TITLE);          
                $surveyTitle = new Literal($sTitle);
                $this->model->add(new Statement($this->resourceSurvey,$predicateTitle,$surveyTitle));           
                
                $predicateDescription = new Resource(DESCRIPTION);
                $surveyDescription = new Literal($sDescription);
                $this->model->add(new Statement($this->resourceSurvey,$predicateDescription,$surveyDescription));
                
        }
        
        public function addQuestion($qTitle,$qDescription,$qType,$qAnswers)
        {
                $questionID = md5( uniqid(rand(), true) );
                $resourceQuestion = new Resource(QUESTION.'/'.$questionID);
                                
                $resourceQuestionType = new Resource(QUESTION);
                $predicateRType = new Resource(RTYPE);
                $this->model->add(new Statement($resourceQuestion,$predicateRType,$resourceQuestionType));
                                
                $predicateUniqueID = new Resource(UID);
                $questionUID = new Literal($questionID);
                $this->model->add(new Statement($resourceQuestion,$predicateUniqueID,$questionUID));
                                
                $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));
                
                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));
                }
                
                $predicateQuestion = new Resource(HAS_QUESTION);
                $this->model->add(new Statement($this->resourceSurvey,$predicateQuestion,$resourceQuestion));
                
        }
        
        public function saveSurvey()
        {       
                $this->model->saveAs('surveys/'.$this->surveyUID.'.rdf','rdf');
        }

}

?>