class.ilLOUtils.php

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<?php
/* Copyright (c) 1998-2010 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilLOUtils
{
        
        public static function isCompleted($a_cont_oid, $a_test_rid, $a_objective_id, $max_points, $reached, $limit_perc)
        {
                include_once './Modules/Course/classes/Objectives/class.ilLOSettings.php';
                $settings = ilLOSettings::getInstanceByObjId($a_cont_oid);
                
                if(self::lookupRandomTest(ilObject::_lookupObjId($a_test_rid)))
                {
                        if(!$max_points)
                        {
                                return true;
                        }
                        else
                        {
                                return ($reached / $max_points * 100) >= $limit_perc;
                        }
                }
                else
                {
                        $required_perc = self::lookupObjectiveRequiredPercentage($a_cont_oid, $a_objective_id, $a_test_rid, $max_points);
                        
                        if(!$max_points)
                        {
                                return TRUE;
                        }
                        else
                        {
                                return ($reached / $max_points * 100) >= $required_perc;
                        }
                }
        }

        public static function lookupObjectiveRequiredPercentage($a_container_id, $a_objective_id, $a_test_ref_id, $a_max_points)
        {
                include_once './Modules/Course/classes/Objectives/class.ilLOSettings.php';
                $settings = ilLOSettings::getInstanceByObjId($a_container_id);
                
                include_once './Modules/Course/classes/Objectives/class.ilLOTestAssignments.php';
                $assignments = ilLOTestAssignments::getInstance($a_container_id);
                $a_test_type = $assignments->getTypeByTest($a_test_ref_id);
                
                if($assignments->isSeparateTest($a_test_ref_id))
                {
                        include_once './Services/Object/classes/class.ilObjectFactory.php';
                        $factory = new ilObjectFactory();
                        $tst = $factory->getInstanceByRefId($a_test_ref_id, FALSE);
                        if($tst instanceof ilObjTest)
                        {
                                $schema = $tst->getMarkSchema();
                                foreach($schema->getMarkSteps() as $mark)
                                {
                                        if($mark->getPassed())
                                        {
                                                return (int) $mark->getMinimumLevel();
                                        }
                                }
                        }
                }
                
                
                
                $tst_ref_id = $a_test_ref_id;
                if(self::lookupRandomTest(ilObject::_lookupObjId($tst_ref_id)))
                {
                        include_once './Modules/Course/classes/Objectives/class.ilLORandomTestQuestionPools.php';
                        return (int) ilLORandomTestQuestionPools::lookupLimit($a_container_id, $a_objective_id, $a_test_type);
                }
                else
                {
                        include_once './Modules/Course/classes/class.ilCourseObjectiveQuestion.php';
                        $limit = ilCourseObjectiveQuestion::loookupTestLimit(ilObject::_lookupObjId($tst_ref_id), $a_objective_id);
                        return $limit;
                }
        }
        
        public static function lookupMaxAttempts($a_container_id, $a_objective_id, $a_test_ref_id)
        {
                global $ilDB;
                
                include_once './Modules/Course/classes/Objectives/class.ilLOTestAssignments.php';
                $assignments = ilLOTestAssignments::getInstance($a_container_id);
                if(!$assignments->isSeparateTest($a_test_ref_id))
                {
                        // no limit of tries for tests assigned to multiple objectives.
                        return 0;
                }
                
                $query = 'SELECT nr_of_tries FROM tst_tests '.
                        'WHERE obj_fi = '.$ilDB->quote(ilObject::_lookupObjId($a_test_ref_id),'integer');
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT))
                {
                        return (int) $row->nr_of_tries;
                }
                return 0;
        }
        
        
        public static function lookupRandomTest($a_test_obj_id)
        {
                include_once './Modules/Test/classes/class.ilObjTest.php';
                return ilObjTest::_lookupRandomTest($a_test_obj_id);
        }
        
        public static function lookupQplBySequence($a_test_ref_id, $a_sequence_id)
        {
                if(!$a_sequence_id)
                {
                        return '';
                }
                $tst = ilObjectFactory::getInstanceByRefId($a_test_ref_id,false);
                if(!$tst instanceof ilObjTest)
                {
                        return '';
                }
                include_once './Modules/Test/classes/class.ilTestRandomQuestionSetSourcePoolDefinitionList.php';
                include_once './Modules/Test/classes/class.ilTestRandomQuestionSetSourcePoolDefinitionFactory.php';
                $list = new ilTestRandomQuestionSetSourcePoolDefinitionList(
                                $GLOBALS['ilDB'],
                                $tst,
                                new ilTestRandomQuestionSetSourcePoolDefinitionFactory(
                                                $GLOBALS['ilDB'],
                                                $tst
                                )
                );
                                
                $list->loadDefinitions();

                include_once './Modules/Test/classes/class.ilTestTaxonomyFilterLabelTranslater.php';
                $translator = new ilTestTaxonomyFilterLabelTranslater($GLOBALS['ilDB']);
                $translator->loadLabels($list);
                
                $title = '';
                foreach ($list as $definition)
                {
                        if($definition->getId() != $a_sequence_id)
                        {
                                continue;
                        }
                        $title = self::buildQplTitleByDefinition($definition, $translator);
                }
                return $title;
        }
        
        protected static function buildQplTitleByDefinition(ilTestRandomQuestionSetSourcePoolDefinition $def, ilTestTaxonomyFilterLabelTranslater $trans)
        {
                $title = $def->getPoolTitle();
                $tax_id = $def->getMappedFilterTaxId();
                if($tax_id)
                {
                        $title .= (' -> '. $trans->getTaxonomyTreeLabel($tax_id));
                }
                $tax_node = $def->getMappedFilterTaxNodeId();
                if($tax_node)
                {
                        $title .= (' -> ' .$trans->getTaxonomyNodeLabel($tax_node));
                }
                return $title;
        }
        
        public static function hasActiveRun($a_container_id, $a_test_ref_id, $a_objective_id)
        {
                return FALSE;
                
                // check if pass exists
                include_once './Modules/Test/classes/class.ilObjTest.php';
                if(
                        !ilObjTest::isParticipantsLastPassActive(
                                $a_test_ref_id,
                                $GLOBALS['ilUser']->getId())
                )
                {
                        return false;
                }

                // check if multiple pass exists
                include_once './Modules/Course/classes/Objectives/class.ilLOTestRun.php';
                $last_objectives = ilLOTestRun::lookupObjectives(
                                $a_container_id, 
                                $GLOBALS['ilUser']->getId(),
                                ilObject::_lookupObjId($a_test_ref_id)
                );
                
                if(count((array) $last_objectives) and in_array((int) $a_objective_id, (array) $last_objectives))
                {
                        return true;
                }
                return false;
        }
        
        public static function getTestResultLinkForUser($a_test_ref_id, $a_user_id)
        {
                global $ilCtrl, $ilUser, $ilAccess;
                
                if($ilUser->getId() == ANONYMOUS_USER_ID)
                {
                        return;
                }
                                
                $valid = $tutor = false;
                if($a_user_id == $ilUser->getId())
                {
                        $valid = $ilAccess->checkAccess('read', '', $a_test_ref_id);
                }               
                if(!$valid)
                {                       
                        $valid = $ilAccess->checkAccess('write', '', $a_test_ref_id);
                        $tutor = true;
                }
                if($valid)
                {
                        $testObjId = ilObject::_lookupObjId($a_test_ref_id);
                        if(!$tutor)
                        {                                       
                                require_once 'Modules/Test/classes/class.ilObjTestAccess.php';
                                if(ilObjTestAccess::visibleUserResultExists($testObjId, $a_user_id))
                                {       
                                        $ilCtrl->setParameterByClass('ilObjTestGUI', 'ref_id', $a_test_ref_id);
                                        $link = $ilCtrl->getLinkTargetByClass(array('ilRepositoryGUI', 'ilObjTestGUI'), 'userResultsGateway');
                                        $ilCtrl->setParameterByClass('ilObjTestGUI', 'ref_id', '');
                                        return $link;
                                }
                        }
                        else
                        {
                                include_once 'Modules/Test/classes/class.ilObjTest.php';
                                $testId = ilObjTest::_getTestIDFromObjectID($testObjId);
                                if($testId)
                                {                                       
                                        $userActiveId = ilObjTest::_getActiveIdOfUser($a_user_id, $testId);             
                                        if($userActiveId)
                                        {
                                                $ilCtrl->setParameterByClass('ilTestEvaluationGUI', 'ref_id', $a_test_ref_id);
                                                $ilCtrl->setParameterByClass('ilTestEvaluationGUI', 'active_id', $userActiveId);
                                                $link = $ilCtrl->getLinkTargetByClass(array('ilRepositoryGUI', 'ilObjTestGUI', 'ilTestEvaluationGUI'), 'outParticipantsResultsOverview');
                                                $ilCtrl->setParameterByClass('ilTestEvaluationGUI', 'ref_id', '');
                                                $ilCtrl->setParameterByClass('ilTestEvaluationGUI', 'active_id', '');
                                                return $link;
                                        }
                                }                       
                        }                       
                }
        }
}
?>