class.ilTestVirtualSequenceRandomQuestionSet.php

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

require_once 'Modules/Test/classes/class.ilTestVirtualSequence.php';
require_once 'Modules/Test/interfaces/interface.ilTestRandomQuestionSequence.php';

class ilTestVirtualSequenceRandomQuestionSet extends ilTestVirtualSequence implements ilTestRandomQuestionSequence
{
        private $questionsSourcePoolDefinitionMap;
        
        public function __construct(ilDBInterface $db, ilObjTest $testOBJ, ilTestSequenceFactory $testSequenceFactory)
        {
                parent::__construct($db, $testOBJ, $testSequenceFactory);
                
                $this->questionsSourcePoolDefinitionMap = array();
        }
        
        public function getResponsibleSourcePoolDefinitionId($questionId)
        {
                return $this->questionsSourcePoolDefinitionMap[$questionId];
        }

        protected function fetchQuestionsFromPasses($activeId, $passes)
        {
                $this->questionsPassMap = array();
                
                foreach($passes as $pass)
                {
                        $handledSourcePoolDefinitions = array_flip($this->questionsSourcePoolDefinitionMap);

                        $testSequence = $this->getTestSequence($activeId, $pass);
                        
                        foreach($testSequence->getOrderedSequenceQuestions() as $questionId)
                        {
                                $definitionId = $testSequence->getResponsibleSourcePoolDefinitionId($questionId);
                                
                                if( isset($handledSourcePoolDefinitions[$definitionId]) )
                                {
                                        continue;
                                }

                                if($this->wasAnsweredInThisPass($testSequence, $questionId))
                                {
                                        $this->questionsPassMap[$questionId] = $pass;
                                        
                                        $this->questionsSourcePoolDefinitionMap[$questionId] = $definitionId;
                                }
                        }
                }
        }
}