class.ilECSExport.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2006 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 ilECSExport
{
        protected $db = null;

        protected $server_id = 0;
        protected $obj_id = 0;
        protected $econtent_id = 0;
        protected $exported = false; 

        public function __construct($a_server_id,$a_obj_id)
        {
                global $ilDB;

                $this->server_id = $a_server_id;
                $this->obj_id = $a_obj_id;
                
                $this->db = $ilDB;
                $this->read();
        }

        public function getServerId()
        {
                return $this->server_id;
        }

        public function setServerId($a_server_id)
        {
                $this->server_id = $a_server_id;
        }

        public static function _isExported($a_obj_id)
        {
                global $ilDB;

                $query = 'SELECT * FROM ecs_export '.
                        'WHERE obj_id = '.$ilDB->quote($a_obj_id,'integer');
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT))
                {
                        return true;
                }
                return false;
        }


        public static function _getAllEContentIds($a_server_id)
        {
                global $ilDB;
                
                $query = "SELECT econtent_id,obj_id FROM ecs_export ".
                        'WHERE server_id = '.$ilDB->quote($a_server_id,'integer');

                $res = $ilDB->query($query);
                while($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT))
                {
                        $econtent_ids[$row->econtent_id] = $row->obj_id;
                }
                return $econtent_ids ? $econtent_ids : array();
        }

        public static function getExportedIds()
        {
                global $ilDB;
                $query = "SELECT obj_id FROM ecs_export ";
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT))
                {
                        $obj_ids[] = $row->obj_id;
                }
                return $obj_ids ? $obj_ids : array();
        }
        
        public static function getExportedIdsByType($a_type)
        {
                global $ilDB;
                $query = "SELECT e.obj_id FROM ecs_export e".
                        " JOIN object_data o ON (e.obj_id = o.obj_id)".
                        " WHERE o.type = ".$ilDB->quote($a_type, "text");
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT))
                {
                        $obj_ids[] = $row->obj_id;
                }
                return $obj_ids ? $obj_ids : array();
        }

        public static function getExportServerIds($a_obj_id)
        {
                global $ilDB;

                $query = 'SELECT * FROM ecs_export '.
                        'WHERE obj_id = '.$ilDB->quote($a_obj_id,'integer');
                $res = $ilDB->query($query);

                $sids = array();
                while($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT))
                {
                        $sids[] = $row->server_id;
                }
                return $sids;
        }

        public static function _getExportedIDsByServer($a_server_id)
        {
                global $ilDB;
                $query = "SELECT obj_id FROM ecs_export ".
                        'WHERE server_id = '.$ilDB->quote($a_server_id,'integer');
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT))
                {
                        $obj_ids[] = $row->obj_id;
                }
                return $obj_ids ? $obj_ids : array();
        }

        public static function lookupServerIds($a_obj_id)
        {
                global $ilDB;

                $query = 'SELECT * FROM ecs_export '.
                        'WHERE obj_id = '.$ilDB->quote($a_obj_id,'integer').' ';
                $res = $ilDB->query($query);
                $sids = array();
                while($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT))
                {                       
                        $sids[] = $row->server_id;                      
                }
                return $sids;
        }
        
        public static function _deleteEContentIds($a_server_id,$a_ids)
        {
                global $ilDB;
                
                if(!is_array($a_ids) or !count($a_ids))
                {
                        return true;
                }
                #$query = "DELETE FROM ecs_export WHERE econtent_id IN (".implode(',',ilUtil::quoteArray($a_ids)).')';
                $query = "DELETE FROM ecs_export WHERE ".$ilDB->in('econtent_id',$a_ids,false,'integer').' '.
                        'AND server_id = '.$ilDB->quote($a_server_id,'integer');
                $res = $ilDB->manipulate($query);
                return true;
        }

        public static function deleteByServer($a_server_id)
        {
                global $ilDB;

                $query = 'DELETE FROM ecs_export '.
                        'WHERE server_id = '.$ilDB->quote($a_server_id,'integer');
                $ilDB->manipulate($query);
        }
        
        public static function _isRemote($a_server_id,$a_econtent_id)
        {
                global $ilDB;
                
                $query = "SELECT obj_id FROM ecs_export ".
                        "WHERE econtent_id = ".$ilDB->quote($a_econtent_id,'integer')." ".
                        'AND server_id = '.$ilDB->quote($a_server_id,'integer');
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT))
                {
                        return false;
                }
                return true;
        }
        
        public function setExported($a_status)
        {
                $this->exported = $a_status;
        }
        
        public function isExported()
        {
                return (bool) $this->exported;
        }

        public function setEContentId($a_id)
        {
                $this->econtent_id = $a_id;
        }
        
        public function getEContentId()
        {
                return $this->econtent_id;
        }
        
        public function save()
        {
                global $ilDB;

                $query = "DELETE FROM ecs_export ".
                        "WHERE obj_id = ".$this->db->quote($this->obj_id,'integer')." ".
                        'AND server_id = '.$ilDB->quote($this->getServerId());
                $res = $ilDB->manipulate($query);
        
                if($this->isExported())
                {
                        $query = "INSERT INTO ecs_export (server_id,obj_id,econtent_id) ".
                                "VALUES ( ".
                                $this->db->quote($this->getServerId(),'integer').', '.
                                $this->db->quote($this->obj_id,'integer').", ".
                                $this->db->quote($this->getEContentId(),'integer')." ".
                                ")";
                        $res = $ilDB->manipulate($query);
                }
                
                return true;
        }
        
        private function read()
        {
                global $ilDB;
                
                $query = "SELECT * FROM ecs_export WHERE ".
                        "obj_id = ".$this->db->quote($this->obj_id,'integer')." AND ".
                        'server_id = '.$ilDB->quote($this->getServerId(),'integer');
                $res = $this->db->query($query);
                while($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT))
                {
                        $this->econtent_id = $row->econtent_id;
                        $this->exported = true;
                }
        }
        
        public static function deleteByServerId($a_server_id)
        {
                global $ilDB;

                $query = 'DELETE FROM ecs_export'.
                        ' WHERE server_id = '.$ilDB->quote($a_server_id,'integer');
                $ilDB->manipulate($query);
                return true;
        }
}
?>