/**
  * Build the Survey Questions
  * @param int $courseId Internal course ID
  */
 public function build_survey_questions($courseId)
 {
     $table_que = Database::get_course_table(TABLE_SURVEY_QUESTION);
     $table_opt = Database::get_course_table(TABLE_SURVEY_QUESTION_OPTION);
     $sql = 'SELECT * FROM ' . $table_que . ' WHERE c_id = ' . $courseId . '  ';
     $db_result = Database::query($sql);
     while ($obj = Database::fetch_object($db_result)) {
         $question = new SurveyQuestion($obj->question_id, $obj->survey_id, $obj->survey_question, $obj->survey_question_comment, $obj->type, $obj->display, $obj->sort, $obj->shared_question_id, $obj->max_value);
         $sql = 'SELECT * FROM ' . $table_opt . '
                 WHERE c_id = ' . $courseId . ' AND question_id = ' . $obj->question_id;
         $db_result2 = Database::query($sql);
         while ($obj2 = Database::fetch_object($db_result2)) {
             $question->add_answer($obj2->option_text, $obj2->sort);
         }
         $this->course->add_resource($question);
     }
 }