ilAssLacStringResultExpression.php

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<?php

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

class ilAssLacStringResultExpression extends ilAssLacAbstractExpression implements ilAssLacSolutionExpressionInterface
{
        public static $pattern = "/~.*?~/";

        public static $identifier = "~TEXT~";

        protected $text;

        public function getPattern()
        {
                return '/~(.*)~/';
        }

        protected function setMatches($matches)
        {
                $this->text = $matches[1][0];
        }

        public function getText()
        {
                return $this->text;
        }

        public function getValue()
        {
                return "~" . $this->text . '~';
        }

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

        public function checkResult($result, $comperator, $index = null)
        {
                $isTrue = false;
                if($index == null)
                {
                        $values = $result->getUserSolutionsByIdentifier("value");

                        foreach($values as $value)
                        {
                                $isTrue = $isTrue || $this->compare($comperator, $value);
                        }
                }
                else
                {
                        $solution = $result->getSolutionForKey($index);
                        $isTrue = $this->compare($comperator, $solution["value"]);
                }

                return $isTrue;
        }

        private function compare($comperator, $value)
        {
                switch($comperator)
                {
                        case "=":
                                return $this->getText() == $value;
                                break;
                        case "<>":
                                return $this->getText() != $value;
                                break;
                        default:
                                return false;
                }
        }
}