ilAssLacMatchingResultExpression.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 ilAssLacMatchingResultExpression extends ilAssLacAbstractExpression implements ilAssLacSolutionExpressionInterface
{
        public static $pattern = "/;[0-9]+:[0-9]+;/";

        public static $identifier = ";n:m;";

        protected $left_numeric_value;

        protected $right_numeric_value;

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

        protected function setMatches($matches)
        {
                $this->left_numeric_value = $matches[1][0];
                $this->right_numeric_value = $matches[2][0];
        }

        public function getRightNumericValue()
        {
                return $this->right_numeric_value;
        }

        public function getLeftNumericValue()
        {
                return $this->left_numeric_value;
        }

        public function getValue()
        {
                return ";" . $this->left_numeric_value. ":" . $this->right_numeric_value . ";";
        }

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

        public function checkResult($result, $comperator, $index = null)
        {
                $solutions = $result->getSolutions();
                $isTrue = false;
                foreach($solutions as $solution)
                {
                        $isTrue = $isTrue || $this->compare($comperator, $solution["key"], $solution["value"]);
                }
                return $isTrue;
        }

        private function compare($comperator, $left, $right)
        {
                switch($comperator)
                {
                        case "=":
                                return $this->getLeftNumericValue() == $left && $this->getRightNumericValue() == $right;
                                break;
                        case "<>":
                                return $this->getLeftNumericValue() != $left || $this->getRightNumericValue() != $right;
                                break;
                        default:
                                return false;
                }
        }
}