<?php

class SurveyAnswerRDFWriter extends SurveyRDFWriter
{
	protected $userUID;

	public function __construct($surveyUID,$userUID)
    {
        parent::__construct($surveyUID);
		
		$this->userUID = $userUID;
    }
	
	public function saveSurvey()
	{	
		$answerPath = 'surveys/answers_'.$this->surveyUID;
		if (!is_dir($answerPath))
			mkdir($answerPath);		
		$this->model->saveAs($answerPath.'/answer_'.$this->userUID.'.rdf','rdf');
	}
	
	public function setRespondentData($name)
	{				
		$resourceUser = new Resource(USER);
		
		$LiteralUserName = new Literal($name);
		$predicateName = new Resource(NAME);
		$this->model->add(new Statement($resourceUser,$predicateUniqueID,$LiteralUserName));		
		
		$literalUserID = new Literal($this->userUID);
		$predicateUniqueID = new Resource(UID);
		$this->model->add(new Statement($resourceUser,$predicateUniqueID,$literalUserID));
		
		$predicateRespondent = new Resource(REPONDENT);
		$this->model->add(new Statement($this->resourceSurvey,$predicateRespondent,$resourceUser));
	}
	
	public function setAnswers($answers)
	{
		foreach($answers as $questionID => $answerValue)
		{					
			$resourceQuestion = new Resource(QUESTION.'/'.$questionID);
						
			$predicateAnswered = new Resource(ANSWERED);	
			$answer = new Literal($answerValue);
			$this->model->add(new Statement($resourceQuestion,$predicateAnswered,$answer));
		}
	}
}

?>