class.ilTestRandomQuestionSetBuilderWithAmountPerTest.php

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<?php
/* Copyright (c) 1998-2013 ILIAS open source, Extended GPL, see docs/LICENSE */

require_once 'Modules/Test/classes/class.ilTestRandomQuestionSetBuilder.php';

class ilTestRandomQuestionSetBuilderWithAmountPerTest extends ilTestRandomQuestionSetBuilder
{
        public function checkBuildable()
        {
                $questionStage = $this->getQuestionStageForSourcePoolDefinitionList($this->sourcePoolDefinitionList);

                return $this->isQuestionSetFetchable($questionStage);
        }

        public function performBuild(ilTestSession $testSession)
        {
                $questionStage = $this->getQuestionStageForSourcePoolDefinitionList($this->sourcePoolDefinitionList);

                $questionSet = $this->fetchQuestionsFromStageRandomly(
                        $questionStage, $this->questionSetConfig->getQuestionAmountPerTest()
                );

                $questionSet = $this->handleQuestionOrdering($questionSet);

                $this->storeQuestionSet($testSession, $questionSet);
        }

        private function isQuestionSetFetchable($questionStage)
        {
                $requiredAmount = $this->questionSetConfig->getQuestionAmountPerTest();
                $possibleAmount = count($questionStage);

                return ( $possibleAmount >= $requiredAmount );
        }
}