class.ilEventItems.php

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<?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. |
        +-----------------------------------------------------------------------------+
*/


class ilEventItems
{
        var $ilErr;
        var $ilDB;
        var $tree;
        var $lng;

        var $event_id = null;
        var $items = array();


        function ilEventItems($a_event_id)
        {
                global $ilErr,$ilDB,$lng,$tree;

                $this->ilErr =& $ilErr;
                $this->db  =& $ilDB;
                $this->lng =& $lng;

                $this->event_id = $a_event_id;
                $this->__read();
        }

        function getEventId()
        {
                return $this->event_id;
        }
        function setEventId($a_event_id)
        {
                $this->event_id = $a_event_id;
        }
        
        function getItems()
        {
                return $this->items ? $this->items : array();
        }
        function setItems($a_items)
        {
                $this->items = array();
                foreach($a_items as $item_id)
                {
                        $this->items[] = (int) $item_id;
                }
        }
        function delete()
        {
                return ilEventItems::_delete($this->getEventId());
        }
        
        function _delete($a_event_id)
        {
                global $ilDB;

                $query = "DELETE FROM event_items ".
                        "WHERE event_id = ".$ilDB->quote($a_event_id ,'integer')." ";
                $res = $ilDB->manipulate($query);
                return true;
        }
        
        function update()
        {
                global $ilDB;
                
                $this->delete();
                
                foreach($this->items as $item)
                {
                        $query = "INSERT INTO event_items (event_id,item_id) ".
                                "VALUES( ".
                                $ilDB->quote($this->getEventId() ,'integer').", ".
                                $ilDB->quote($item ,'integer')." ".
                                ")";
                        $res = $ilDB->manipulate($query);
                }
                return true;
        }
        
        function _getItemsOfContainer($a_ref_id)
        {
                global $ilDB,$tree;
                
                $session_nodes = $tree->getChildsByType($a_ref_id,'sess');
                foreach($session_nodes as $node)
                {
                        $session_ids[] = $node['obj_id'];
                }
                $query = "SELECT item_id FROM event_items ".
                        "WHERE ".$ilDB->in('event_id',$session_ids,false,'integer');
                        

                $res = $ilDB->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $items[] = $row->item_id;
                }
                return $items ? $items : array();
        }
        
        public static function _getItemsOfEvent($a_event_id)
        {
                global $ilDB;
                
                $query = "SELECT * FROM event_items ".
                        "WHERE event_id = ".$ilDB->quote($a_event_id ,'integer');
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $items[] = $row->item_id;
                }
                return $items ? $items : array();
        }

        function _isAssigned($a_item_id)
        {
                global $ilDB;

                $query = "SELECT * FROM event_items ".
                        "WHERE item_id = ".$ilDB->quote($a_item_id ,'integer')." ";
                $res = $ilDB->query($query);

                return $res->numRows() ? true : false;
        }
        
        public function cloneItems($a_source_id,$a_copy_id)
        {
                global $ilObjDataCache,$ilLog;
                
                $ilLog->write(__METHOD__.': Begin cloning session materials ...');
                
                include_once('Services/CopyWizard/classes/class.ilCopyWizardOptions.php');
                $cwo = ilCopyWizardOptions::_getInstance($a_copy_id);
                $mappings = $cwo->getMappings();
                
                $new_items = array(); 
                foreach(ilEventItems::_getItemsOfEvent($a_source_id) as $item_id)
                {
                        if(isset($mappings[$item_id]) and $mappings[$item_id])
                        {
                                $ilLog->write(__METHOD__.': Clone session material nr. '.$item_id);
                                $new_items[] = $mappings[$item_id];
                        }
                        else
                        {
                                $ilLog->write(__METHOD__.': No mapping found for session material nr. '.$item_id);
                        }
                }
                $this->setItems($new_items);
                $this->update();
                $ilLog->write(__METHOD__.': Finished cloning session materials ...');
                return true;
        }


        // PRIVATE
        function __read()
        {
                global $ilDB,$tree;
                
                $query = "SELECT * FROM event_items ".
                        "WHERE event_id = ".$ilDB->quote($this->getEventId() ,'integer')." ";

                $res = $this->db->query($query);
                $this->items = array();
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        if($tree->isDeleted($row->item_id))
                        {
                                continue;
                        }
                        if(!$tree->isInTree($row->item_id))
                        {
                                $query = "DELETE FROM event_items ".
                                        "WHERE item_id = ".$ilDB->quote($row->item_id ,'integer');
                                $ilDB->manipulate($query);
                                continue;
                        }
                        
                        $this->items[] = (int) $row->item_id;
                }
                return true;
        }
                
}
?>