course/classes/class.ilCourseStart.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2005 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. |
        +-----------------------------------------------------------------------------+
*/

class ilCourseStart
{
        var $db;

        var $ref_id;
        var $id;
        var $start_objs = array();

        function ilCourseStart($a_course_ref_id,$a_course_obj_id)
        {
                global $ilDB;

                $this->db =& $ilDB;

                $this->ref_id = $a_course_ref_id;
                $this->id = $a_course_obj_id;

                $this->__read();
        }
        function setId($a_id)
        {
                $this->id = $a_id;
        }
        function getId()
        {
                return $this->id;
        }
        function setRefId($a_ref_id)
        {
                $this->ref_id = $a_ref_id;
        }
        function getRefId()
        {
                return $this->ref_id;
        }
        function getStartObjects()
        {
                return $this->start_objs ? $this->start_objs : array();
        }

        function delete($a_crs_start_id)
        {
                $query = "DELETE FROM crs_start ".
                        "WHERE crs_start_id = '".$a_crs_start_id."' ".
                        "AND crs_id = '".$this->getId()."'";

                $this->db->query($query);

                return true;
        }

        function exists($a_item_ref_id)
        {
                $query = "SELECT * FROM crs_start ".
                        "WHERE crs_id = '".$this->getId()."' ".
                        "AND item_ref_id = '".$a_item_ref_id."'";

                $res = $this->db->query($query);

                return $res->numRows() ? true : false;
        }

        function add($a_item_ref_id)
        {
                if($a_item_ref_id)
                {
                        $query = "INSERT INTO crs_start ".
                                "SET crs_id = '".$this->getId()."', ".
                                "item_ref_id = '".$a_item_ref_id."'";

                        $this->db->query($query);

                        return true;
                }
                return false;
        }

        function __deleteAll()
        {
                $query = "DELETE FROM crs_start ".
                        "WHERE crs_id = '".$this->getId()."'";


                $this->db->query($query);

                return true;
        }

        function getPossibleStarters(&$item_obj)
        {
                foreach($item_obj->getItems() as $node)
                {
                        switch($node['type'])
                        {
                                case 'lm':
                                case 'sahs':
                                case 'svy':
                                case 'tst':
                                        $poss_items[] = $node['ref_id'];
                                        break;
                        }
                }
                return $poss_items ? $poss_items : array();
        }

        function allFullfilled($user_id)
        {
                foreach($this->getStartObjects() as $item)
                {
                        if(!$this->isFullfilled($user_id,$item['item_ref_id']))
                        {
                                return false;
                        }
                }
                return true;
        }


        function isFullfilled($user_id,$item_id)
        {
                global $ilObjDataCache;

                include_once './course/classes/class.ilCourseLMHistory.php';
                $lm_continue =& new ilCourseLMHistory($this->getRefId(),$user_id);
                $continue_data = $lm_continue->getLMHistory();

                $obj_id = $ilObjDataCache->lookupObjId($item_id);
                $type = $ilObjDataCache->lookupType($obj_id);
                
                switch($type)
                {
                        case 'tst':
                                include_once './assessment/classes/class.ilObjTestAccess.php';
                                
                                if(!ilObjTestAccess::_checkCondition($obj_id,'finished',''))
                                {
                                        return false;
                                }
                                break;
                        case 'svy':
                                include_once './survey/classes/class.ilObjSurveyAccess.php';
                                if(!ilObjSurveyAccess::_lookupFinished($obj_id, $user_id))
                                {
                                        return false;
                                }
                                break;
                        case 'sahs':
                                include_once 'Services/Tracking/classes/class.ilLPStatusWrapper.php';
                                $completed = ilLPStatusWrapper::_getCompleted($obj_id);
                                if(!in_array($user_id,$completed))
                                {
                                        return false;
                                }
                                break;

                        default:
                                if(!isset($continue_data[$item_id]))
                                {
                                        return false;
                                }
                }
                return true;
        }


        // PRIVATE
        function __read()
        {
                global $tree;

                $this->start_objs = array();

                $query = "SELECT * FROM crs_start ".
                        "WHERE crs_id = '".$this->getId()."'";

                $res = $this->db->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        if($tree->isInTree($row->item_ref_id))
                        {
                                $this->start_objs[$row->crs_start_id]['item_ref_id'] = $row->item_ref_id;
                        }
                        else
                        {
                                $this->delete($row->item_ref_id);
                        }
                }
                return true;
        }

                


} // END class.ilObjCourseGrouping
?>