Services/Tracking/classes/class.ilLPStatusCollection.php

Go to the documentation of this file.

<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2001 ILIAS open source, University of Cologne            |
        |                                                                             |
        | This program is free software; you can redistribute it and/or               |
        | modify it under the terms of the GNU General Public License                 |
        | as published by the Free Software Foundation; either version 2              |
        | of the License, or (at your option) any later version.                      |
        |                                                                             |
        | This program is distributed in the hope that it will be useful,             |
        | but WITHOUT ANY WARRANTY; without even the implied warranty of              |
        | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               |
        | GNU General Public License for more details.                                |
        |                                                                             |
        | You should have received a copy of the GNU General Public License           |
        | along with this program; if not, write to the Free Software                 |
        | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/

include_once './Services/Tracking/classes/class.ilLPStatus.php';
include_once './Services/Tracking/classes/class.ilLPStatusWrapper.php';

class ilLPStatusCollection extends ilLPStatus
{

        function ilLPStatusCollection($a_obj_id)
        {
                global $ilDB;

                parent::ilLPStatus($a_obj_id);
                $this->db =& $ilDB;
        }

        function _getNotAttempted($a_obj_id)
        {
                global $ilObjDataCache;

                switch($ilObjDataCache->lookupType($a_obj_id))
                {
                        case 'crs':
                                include_once 'course/classes/class.ilCourseMembers.php';
                                $members = ilCourseMembers::_getMembers($a_obj_id);
                                
                                // diff in progress and completed (use stored result in LPStatusWrapper)
                                $users = array_diff((array) $members,$inp = ilLPStatusWrapper::_getInProgress($a_obj_id));
                                $users = array_diff((array) $users,$com = ilLPStatusWrapper::_getCompleted($a_obj_id));
                                $users = array_diff((array) $users,$fai = ilLPStatusWrapper::_getFailed($a_obj_id));
                                return $users;

                        case 'grp':
                                include_once 'classes/class.ilObjGroup.php';
                                $members = ilObjGroup::_getMembers($a_obj_id);

                                // diff in progress and completed (use stored result in LPStatusWrapper)
                                $users = array_diff((array) $members,$inp = ilLPStatusWrapper::_getInProgress($a_obj_id));
                                $users = array_diff((array) $users,$com = ilLPStatusWrapper::_getCompleted($a_obj_id));
                                $users = array_diff((array) $users,$fai = ilLPStatusWrapper::_getFailed($a_obj_id));
                                return $users;

                        default:
                                return array();
                }
        }

        function _getInProgress($a_obj_id)
        {
                include_once './Services/Tracking/classes/class.ilLPCollectionCache.php';
                include_once './Services/Tracking/classes/class.ilLPEventCollections.php';


                global $ilBench,$ilObjDataCache;
                $ilBench->start('LearningProgress','9172_LPStatusCollection_inProgress');

                $in_progress = 0;
                foreach(ilLPCollectionCache::_getItems($a_obj_id) as $item_id)
                {
                        $item_id = $ilObjDataCache->lookupObjId($item_id);

                        // merge arrays of users with status 'in progress'
                        $users = array_unique(array_merge((array) $users,ilLPStatusWrapper::_getInProgress($item_id)));
                        $users = array_unique(array_merge((array) $users,ilLPStatusWrapper::_getCompleted($item_id)));
                }

                // Handle status of events
                foreach(ilLPEventCollections::_getItems($a_obj_id) as $event_id)
                {
                        #var_dump("<pre>","EVENT_ID: ",$event_id,"<pre>");
                        $users = array_unique(array_merge((array) $users,ilLPStatusWrapper::_getInProgressByType($event_id,'event')));
                        $users = array_unique(array_merge((array) $users,ilLPStatusWrapper::_getCompletedByType($event_id,'event')));
                }

                // Exclude all users with status completed.
                $users = array_diff((array) $users,ilLPStatusWrapper::_getCompleted($a_obj_id));
                // Exclude all users with status failed.
                $users = array_diff((array) $users,ilLPStatusWrapper::_getFailed($a_obj_id));

                switch($ilObjDataCache->lookupType($a_obj_id))
                {
                        case 'crs':
                                // Exclude all non members
                                include_once 'course/classes/class.ilCourseMembers.php';
                                $users = array_intersect(ilCourseMembers::_getMembers($a_obj_id),(array) $users);
                                break;
                                
                        case 'grp':
                                include_once 'classes/class.ilObjGroup.php';
                                $members = ilObjGroup::_getMembers($a_obj_id);
                                $users = array_intersect($members,(array) $users);
                                break;
                }

                $ilBench->stop('LearningProgress','9172_LPStatusCollection_inProgress');
                return $users;
        }

        function _getCompleted($a_obj_id)
        {
                include_once './Services/Tracking/classes/class.ilLPCollectionCache.php';
                include_once './Services/Tracking/classes/class.ilLPEventCollections.php';

                global $ilBench,$ilObjDataCache;
                $ilBench->start('LearningProgress','9173_LPStatusCollection_completed');

                $counter = 0;
                $users = array();
                foreach(ilLPCollectionCache::_getItems($a_obj_id) as $item_id)
                {
                        $item_id = $ilObjDataCache->lookupObjId($item_id);

                        $tmp_users = ilLPStatusWrapper::_getCompleted($item_id);
                        if(!$counter++)
                        {
                                $users = $tmp_users;
                        }
                        else
                        {
                                $users = array_intersect($users,$tmp_users);
                        }

                }
                foreach(ilLPEventCollections::_getItems($a_obj_id) as $event_id)
                {
                        $tmp_users = ilLPStatusWrapper::_getCompletedByType($event_id,'event');
                        if(!$counter++)
                        {
                                $users = $tmp_users;
                        }
                        else
                        {
                                $users = array_intersect($users,$tmp_users);
                        }
                }

                switch($ilObjDataCache->lookupType($a_obj_id))
                {
                        case 'crs':
                                // Exclude all non members
                                include_once 'course/classes/class.ilCourseMembers.php';
                                $users = array_intersect(ilCourseMembers::_getMembers($a_obj_id),(array) $users);
                                break;

                        case 'grp':
                                include_once 'classes/class.ilObjGroup.php';
                                $members = ilObjGroup::_getMembers($a_obj_id);
                                $users = array_intersect($members,(array) $users);
                                break;
                }
                $users = array_diff($users,ilLPStatusWrapper::_getFailed($a_obj_id));
                $ilBench->stop('LearningProgress','9173_LPStatusCollection_completed');
                return (array) $users;
        }

        function _getFailed($a_obj_id)
        {
                global $ilObjDataCache;

                include_once './Services/Tracking/classes/class.ilLPCollectionCache.php';

                $users = array();
                foreach(ilLPCollectionCache::_getItems($a_obj_id) as $item_id)
                {
                        $item_id = $ilObjDataCache->lookupObjId($item_id);
                        $tmp_users = ilLPStatusWrapper::_getFailed($item_id);
                        $users = array_merge($users,$tmp_users);
                }
                
                switch($ilObjDataCache->lookupType($a_obj_id))
                {
                        case 'crs':
                                // Exclude all non members
                                include_once 'course/classes/class.ilCourseMembers.php';
                                $users = array_intersect(ilCourseMembers::_getMembers($a_obj_id),(array) $users);
                                break;
                                
                        case 'grp':
                                include_once 'classes/class.ilObjGroup.php';
                                $members = ilObjGroup::_getMembers($a_obj_id);
                                $users = array_intersect($members,(array) $users);
                                break;
                }
                
                return array_unique($users);
        }
                

        function _getStatusInfo($a_obj_id)
        {
                include_once './Services/Tracking/classes/class.ilLPCollectionCache.php';
                include_once './Services/Tracking/classes/class.ilLPEventCollections.php';

                $status_info['collections'] = ilLPCollectionCache::_getItems($a_obj_id);
                $status_info['event_collections'] = ilLPEventCollections::_getItems($a_obj_id);

                $status_info['num_collections'] = count($status_info['collections']) + count($status_info['event_collections']);
                return $status_info;
        }

        function _getTypicalLearningTime($a_obj_id)
        {
                global $ilObjDataCache;

                if($ilObjDataCache->lookupType($a_obj_id) == 'sahs')
                {
                        return parent::_getTypicalLearningTime($a_obj_id);
                }

                $status_info = ilLPStatusWrapper::_getStatusInfo($a_obj_id);
                foreach($status_info['collections'] as $item)
                {
                        $tlt += ilLPStatusWrapper::_getTypicalLearningTime($ilObjDataCache->lookupObjId($item));
                }
                return $tlt;
        }

}       
?>