Services/Tracking/classes/class.ilLPStatusCollection.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2001 ILIAS open source, University of Cologne            |
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        | 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.                      |
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        | 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.                                |
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        | 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. |
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*/

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)
        {
                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));

                return $users;
        }

        function _getInProgress($a_obj_id)
        {
                include_once './Services/Tracking/classes/class.ilLPCollections.php';
                include_once 'course/classes/class.ilCourseMembers.php';

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

                $in_progress = 0;
                foreach(ilLPCollections::_getItems($a_obj_id) as $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)));
                }

                // Exclude all users with status completed.
                $users = array_diff((array) $users,ilLPStatusWrapper::_getCompleted($a_obj_id));
                // Exclude all non members
                $users = array_intersect(ilCourseMembers::_getMembers($a_obj_id),(array) $users);

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

        function _getCompleted($a_obj_id)
        {
                include_once './Services/Tracking/classes/class.ilLPCollections.php';
                include_once 'course/classes/class.ilCourseMembers.php';

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


                $counter = 0;
                foreach(ilLPCollections::_getItems($a_obj_id) as $item_id)
                {
                        $tmp_users = ilLPStatusWrapper::_getCompleted($item_id);
                        if(!$counter++)
                        {
                                $users = $tmp_users;
                        }
                        else
                        {
                                $users = array_intersect($users,$tmp_users);
                        }

                }
                // Exclude all non members
                $users = array_intersect(ilCourseMembers::_getMembers($a_obj_id),(array) $users);

                $ilBench->stop('LearningProgress','9173_LPStatusCollection_completed');
                return (array) $users;
        }               

}       
?>