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;
        }
    }
}