ilAssLacExclusiveResultExpression.php

Go to the documentation of this file.

<?php

include_once "Modules/TestQuestionPool/classes/questions/LogicalAnswerCompare/Expressions/ilAssLacAbstractExpression.php";
include_once "Modules/TestQuestionPool/classes/questions/LogicalAnswerCompare/Expressions/ilAssLacSolutionExpressionInterface.php";

class ilAssLacExclusiveResultExpression extends ilAssLacAbstractExpression implements ilAssLacSolutionExpressionInterface
{
        public static $pattern = '/\*[0-9]+(?:,[0-9]+)*\*/';

        public static $identifier = "*n,m,o,p*";

        protected $exclusive;

        protected function getPattern()
        {
                return '/(\d+)/';
        }

        protected function setMatches($matches)
        {
                $this->exclusive = array();

                foreach($matches[0] as $match)
                {
                        $this->exclusive[] = $match;
                }
        }

        public function getExclusive()
        {
                return $this->exclusive;
        }

        public function getValue()
        {
                return "*" . join(",", $this->exclusive) . "*";
        }

        public function getDescription()
        {
                return join(",", $this->exclusive) . " beantwortet ";
        }

        public function checkResult($result, $comperator, $index = null)
        {
                $values = $result->getUserSolutionsByIdentifier("value");
                $exclusive = $this->getExclusive();
                sort($values);
                sort($exclusive);

                switch($comperator)
                {
                        case "=":
                                return $values == $exclusive;
                                break;
                        case "<>":
                                return $values != $exclusive;
                                break;
                        default:
                                return false;
                }
        }
}