class.ilLOTestRun.php

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<?php
/* Copyright (c) 1998-2010 ILIAS open source, Extended GPL, see docs/LICENSE */
 
class ilLOTestRun
{
        protected $container_id = 0; 
        protected $user_id = 0;
        protected $test_id = 0;
        protected $objective_id = 0;
        
        protected $max_points = 0;
        protected $questions = array();
        
        
        public function __construct($a_crs_id, $a_user_id, $a_test_id, $a_objective_id)
        {
                $this->container_id = $a_crs_id;
                $this->user_id = $a_user_id;
                $this->test_id = $a_test_id;
                $this->objective_id = $a_objective_id;
                
                $this->read();
        }
        
        public static function lookupRunExistsForObjective($a_test_id, $a_objective_id, $a_user_id)
        {
                global $ilDB;
                
                $query = 'SELECT * FROM loc_tst_run '.
                                'WHERE test_id = '.$ilDB->quote($a_test_id,'integer').' '.
                                'AND objective_id = '.$ilDB->quote($a_objective_id,'integer').' '.
                                'AND user_id = '.$ilDB->quote($a_user_id,'integer');
                $res = $ilDB->query($query);
                
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        return true;
                }
                return false;
        }
 
        public static function deleteRuns($a_container_id, $a_user_id)
        {
                global $ilDB;
                
                $query = 'DELETE FROM loc_tst_run '.
                                'WHERE container_id = ' . $ilDB->quote($a_container_id,'integer').' '.
                                'AND user_id = '.$ilDB->quote($a_user_id,'integer').' ';
                $ilDB->manipulate($query);
                
        }
        
        public static function deleteRun($a_container_id, $a_user_id, $a_test_id)
        {
                global $ilDB;
                
                $query = 'DELETE FROM loc_tst_run '.
                                'WHERE container_id = ' . $ilDB->quote($a_container_id,'integer').' '.
                                'AND user_id = '.$ilDB->quote($a_user_id,'integer').' '.
                                'AND test_id = '.$ilDB->quote($a_test_id,'integer').' ';
                $ilDB->manipulate($query);
        }
        
        public static function lookupObjectives($a_container_id, $a_user_id, $a_test_id)
        {
                global $ilDB;
                
                $query = 'SELECT objective_id FROM loc_tst_run '.
                                'WHERE container_id = '.$ilDB->quote($a_container_id,'integer').' '.
                                'AND user_id = '.$ilDB->quote($a_user_id,'integer').' '.
                                'AND test_id = '.$ilDB->quote($a_test_id,'integer');
                $GLOBALS['ilLog']->write(__METHOD__.': '.$query);
                $res = $ilDB->query($query);
                $objectives = array();
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $objectives[] = $row->objective_id;
                }
                return $objectives;
        }
        
        public static function getRun($a_container_id, $a_user_id, $a_test_id)
        {
                global $ilDB;
                
                $query = 'SELECT objective_id FROM loc_tst_run '.
                                'WHERE container_id = ' . $ilDB->quote($a_container_id,'integer').' '.
                                'AND user_id = '.$ilDB->quote($a_user_id,'integer').' '.
                                'AND test_id = '.$ilDB->quote($a_test_id,'integer').' ';
                $res = $ilDB->query($query);
                
                $run = array();
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $run[] = new ilLOTestRun($a_container_id, $a_user_id, $a_test_id, $row->objective_id);
                }
                return $run;
        }
 
        public function getContainerId()
        {
                return $this->container_id;
        }
        
        public function getUserId()
        {
                return $this->user_id;
        }
        
        public function getTestId()
        {
                return $this->test_id;
        }
        
        public function getObjectiveId()
        {
                return $this->objective_id;
        }
        
        public function getMaxPoints()
        {
                return $this->max_points;
        }
        
        public function setMaxPoints($a_points)
        {
                $this->max_points = $a_points;
        }
        
        public function getQuestions()
        {
                return (array) $this->questions;
        }
        
        public function clearQuestions()
        {
                $this->questions = array();
        }
        
        public function addQuestion($a_id)
        {
                $this->questions[$a_id] = 0;
        }
        
        public function questionExists($a_question_id)
        {
                return array_key_exists($a_question_id,(array) $this->questions);
        }
        
        public function setQuestionResult($a_qst_id, $a_points)
        {
                $GLOBALS['ilLog']->write(__METHOD__.': '.$a_qst_id.' '.$a_points);
                
                
                if($this->questions[$a_qst_id] < $a_points)
                {
                        $this->questions[$a_qst_id] = $a_points;
                }
                $GLOBALS['ilLog']->write(__METHOD__.': '.print_r($this->questions,true));
        }
        
        public function getResult()
        {
                $sum_points = 0;
                foreach($this->questions as $qid => $points)
                {
                        $sum_points +=  $points;
                }
                
                $percentage = 
                        ($this->getMaxPoints() > 0) ?
                        ($sum_points / $this->getMaxPoints() * 100) :
                        100;
                
                return array(
                        'max' => $this->getMaxPoints(),
                        'reached' => $sum_points,
                        'percentage' => $percentage
                );
        }
 
        
        public function delete()
        {
                global $ilDB;
                
                $query = 'DELETE FROM loc_tst_run '.
                                'WHERE container_id = ' . $ilDB->quote($this->getContainerId(),'integer').' '.
                                'AND user_id = '.$ilDB->quote($this->getUserId(),'integer').' '.
                                'AND test_id = '.$ilDB->quote($this->getTestId(),'integer').' '.
                                'AND objective_id = '.$ilDB->quote($this->getObjectiveId(),'integer');
                $ilDB->manipulate($query);
        }
        
        public function create()
        {
                global $ilDB;
                
                $query = 'INSERT INTO loc_tst_run '.
                                '(container_id, user_id, test_id, objective_id,max_points,questions) '.
                                'VALUES( '.
                                $ilDB->quote($this->getContainerId(),'integer').', '.
                                $ilDB->quote($this->getUserId(),'integer').', '.
                                $ilDB->quote($this->getTestId(),'integer').', '.
                                $ilDB->quote($this->getObjectiveId(),'integer').', '.
                                $ilDB->quote($this->getMaxPoints(),'integer').', '.
                                $ilDB->quote(serialize($this->getQuestions()),'text').' '.
                                ')';
                $ilDB->manipulate($query);
        }
        
        public function update()
        {
                global $ilDB;
                
                $query = 'UPDATE loc_tst_run SET '.
                                'max_points = '.$ilDB->quote($this->getMaxPoints(),'integer').', '.
                                'questions = '.$ilDB->quote(serialize($this->getQuestions()),'text').' '.
                                'WHERE container_id = '.$ilDB->quote($this->container_id,'integer').' '.
                                'AND user_id = '.$ilDB->quote($this->getUserId(),'integer').' '.
                                'AND test_id = '.$ilDB->quote($this->getTestId(),'integer').' '.
                                'AND objective_id = '.$ilDB->quote($this->getObjectiveId(),'integer').' ';
                $ilDB->manipulate($query);
        }
        
        public function read()
        {
                global $ilDB;
                
                $query = 'SELECT * FROM loc_tst_run '.
                                'WHERE container_id = ' . $ilDB->quote($this->getContainerId(),'integer').' '.
                                'AND user_id = '.$ilDB->quote($this->getUserId(),'integer').' '.
                                'AND test_id = '.$ilDB->quote($this->getTestId(),'integer').' '.
                                'AND objective_id = '.$ilDB->quote($this->getObjectiveId(),'integer');
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $this->max_points = $row->max_points;
                        if($row->questions)
                        {
                                $this->questions = unserialize($row->questions);
                        }
                }
                                
        }
}
?>