source: Dev/trunk/classes/SurveyAnswerRDFReader.php @ 49

<?php

class SurveyAnswerRDFReader extends SurveyRDFReader
{       
        protected $tempModel;
        protected $answerPath
        
    public function __construct($surveyUID)
    {
        parent::__construct($surveyUID);
                
                / Create empty MemModel
                $factory = new ModelFactory();
                $this->tempModel = $factory->getDefaultModel();
                $this->answerPath = 'data/surveys/answers_'.$this->surveyUID;
        }
        
        public function loadSurvey()
        {
                parent::loadSurvey();           
                
        }
        
        public function getAnswerByQuestion($questionID)
        {
                $this->tempModel->loadModel($this->model);
                
                $answers = array();
                
                if($handle = opendir($this->answerPath))
                {
                        while (false !== ($file = readdir($handle))) {
                                if(strstr($file, 'answer_'))
                                        $answers[] = substr($file,0,strlen($file)-4);
                        }
                }
                
                foreach($answers as $answer)
                {
                        $this->tempModel->load($this->answerPath.'/'.$answer);
                }
                
                $this->tempModel->visualize();
        
                $querystring = '
                        PREFIX  predicates: <' . SURVEYTOOL_PREDICATES_NAMESPACE . '>
                        PREFIX  resources: <' . SURVEYTOOL_RESOURCES_NAMESPACE . '>
                        SELECT  ?answered 
                        WHERE   
                        {
                                _question       predicates:resource_type        resources:question ;
                                                        predicates:uid                          "'.$questionID.'"       ;
                                                        predicates:answered             ?answered       
                        }';
                        
                $result = $this->tempModel->sparqlQuery($querystring);
                
                $this->tempModel->close();              

                $this->tempModel->visualize();
                                
                return $result;
        }
        
        public function getAnswerByRespondent($respondentID)
        {
                $this->tempModel->loadModel($this->model);
                
                $this->tempModel->load($this->answerPath . '/$answer_' . $respondentID);
                
                $this->tempModel->visualize();
        
                $querystring = '
                        PREFIX  predicates: <' . SURVEYTOOL_PREDICATES_NAMESPACE . '>
                        PREFIX  resources: <' . SURVEYTOOL_RESOURCES_NAMESPACE . '>
                        SELECT  ?answered 
                        WHERE   
                        {
                                _question       predicates:resource_type        resources:question ;
                                                        predicates:answered             ?answered       
                        }';
                        
                $result = $this->tempModel->sparqlQuery($querystring);
                
                $this->tempModel->close();              

                $this->tempModel->visualize();
                                
                return $result;
        }
        
        public function getAnswerByRespondentAndQuestion($respondentID,$questionID)
        {
                $this->tempModel->loadModel($this->model);
                                
                $this->tempModel->load($this->answerPath . '/$answer_' . $respondentID);
                
                $this->tempModel->visualize();
        
                $querystring = '
                        PREFIX  predicates: <' . SURVEYTOOL_PREDICATES_NAMESPACE . '>
                        PREFIX  resources: <' . SURVEYTOOL_RESOURCES_NAMESPACE . '>
                        SELECT  ?answered 
                        WHERE   
                        {
                                _question       predicates:resource_type        resources:question ;
                                                        predicates:uid                          "'.$questionID.'"       ;
                                                        predicates:answered             ?answered       
                        }';
                        
                $result = $this->tempModel->sparqlQuery($querystring);
                
                $this->tempModel->close();              

                $this->tempModel->visualize();
                                
                return $result;
        }
}

?>