class.ilMDIdentifier.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. |
        +-----------------------------------------------------------------------------+
*/

include_once 'class.ilMDBase.php';

class ilMDIdentifier extends ilMDBase
{

        // SET/GET
        function setCatalog($a_catalog)
        {
                $this->catalog = $a_catalog;
        }
        function getCatalog()
        {
                return $this->catalog;
        }
        function setEntry($a_entry)
        {
                $this->entry = $a_entry;
        }
        function getEntry()
        {
                return $this->entry;
        }


        function save()
        {
                global $ilDB;
                
                $fields = $this->__getFields();
                $fields['meta_identifier_id'] = array('integer',$next_id = $ilDB->nextId('il_meta_identifier'));
                
                if($this->db->insert('il_meta_identifier',$fields))
                {
                        $this->setMetaId($next_id);
                        return $this->getMetaId();
                }
                return false;
        }

        function update()
        {
                global $ilDB;
                
                if($this->getMetaId())
                {
                        if($this->db->update('il_meta_identifier',
                                                                        $this->__getFields(),
                                                                        array("meta_identifier_id" => array('integer',$this->getMetaId()))))
                        {
                                return true;
                        }
                }
                return false;
        }

        function delete()
        {
                global $ilDB;

                if($this->getMetaId())
                {
                        $query = "DELETE FROM il_meta_identifier ".
                                "WHERE meta_identifier_id = ".$ilDB->quote($this->getMetaId() ,'integer');
                        $res = $ilDB->manipulate($query);
                        return true;
                }
                return false;
        }
                        

        function __getFields()
        {
                return array('rbac_id'  => array('integer',$this->getRBACId()),
                                         'obj_id'       => array('integer',$this->getObjId()),
                                         'obj_type'     => array('text',$this->getObjType()),
                                         'parent_type' => array('text',$this->getParentType()),
                                         'parent_id' => array('integer',$this->getParentId()),
                                         'catalog'      => array('text',$this->getCatalog()),
                                         'entry'        => array('text',$this->getEntry()));

        }

        function read()
        {
                global $ilDB;
                
                if($this->getMetaId())
                {
                        $query = "SELECT * FROM il_meta_identifier ".
                                "WHERE meta_identifier_id = ".$ilDB->quote($this->getMetaId() ,'integer');

                        $res = $this->db->query($query);
                        while($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT))
                        {
                                $this->setRBACId($row->rbac_id);
                                $this->setObjId($row->obj_id);
                                $this->setObjType($row->obj_type);
                                $this->setParentId($row->parent_id);
                                $this->setParentType($row->parent_type);
                                $this->setCatalog($row->catalog);
                                $this->setEntry($row->entry);
                        }
                }
                return true;
        }
                                
        /*
         * XML Export of all meta data
         * @param object (xml writer) see class.ilMD2XML.php
         * 
         */
        function toXML(&$writer, $a_overwrite_id = false)
        {
                $entry_default = ($this->getObjId() == 0)
                        ? "il_".IL_INST_ID."_".$this->getObjType()."_".$this->getRBACId()
                        : "il_".IL_INST_ID."_".$this->getObjType()."_".$this->getObjId();

                $entry = $this->getEntry() ? $this->getEntry() : $entry_default; 
                $catalog = $this->getCatalog();

                if ($this->getExportMode() && $this->getCatalog() != "ILIAS_NID")
                {
                        $entry = $entry_default;
                        $catalog = "ILIAS";
                }

                if(strlen($catalog))
                {
                        $writer->xmlElement('Identifier',array('Catalog' => $catalog,
                                                                                                   'Entry'       => $entry));
                }
                else
                {
                        $writer->xmlElement('Identifier',array('Entry' => $entry));
                }
        }


        // STATIC
        public static function _getIds($a_rbac_id,$a_obj_id,$a_parent_id,$a_parent_type)
        {
                global $ilDB;

                $query = "SELECT meta_identifier_id FROM il_meta_identifier ".
                        "WHERE rbac_id = ".$ilDB->quote($a_rbac_id ,'integer')." ".
                        "AND obj_id = ".$ilDB->quote($a_obj_id ,'integer')." ".
                        "AND parent_id = ".$ilDB->quote($a_parent_id ,'integer')." ".
                        "AND parent_type = ".$ilDB->quote($a_parent_type ,'text');

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

        static public function _getEntriesForObj($a_rbac_id, $a_obj_id, $a_obj_type)
        {
                global $ilDB;

                $query = "SELECT meta_identifier_id, catalog, entry FROM il_meta_identifier ".
                        "WHERE rbac_id = ".$ilDB->quote($a_rbac_id ,'integer')." ".
                        "AND obj_id = ".$ilDB->quote($a_obj_id ,'integer')." ".
                        "AND obj_type = ".$ilDB->quote($a_obj_type ,'text');

                $res = $ilDB->query($query);
                $entries = array();
                while($r = $ilDB->fetchAssoc($res))
                {
                        $entries[$r["meta_identifier_id"]] =
                                array("catalog" => $r["catalog"],
                                        "entry" => $r["entry"]);
                }
                return $entries;
        }

        static public function _getEntriesForRbacObj($a_rbac_id, $a_obj_type = "")
        {
                global $ilDB;

                $query = "SELECT meta_identifier_id, catalog, entry, obj_id FROM il_meta_identifier ".
                        "WHERE rbac_id = ".$ilDB->quote($a_rbac_id ,'integer');

                if ($a_obj_type != "")
                {
                        $query.=
                                " AND obj_type = ".$ilDB->quote($a_obj_type ,'text');
                }

                $res = $ilDB->query($query);
                $entries = array();
                while($r = $ilDB->fetchAssoc($res))
                {
                        $entries[$r["meta_identifier_id"]] =
                                array("catalog" => $r["catalog"],
                                        "entry" => $r["entry"],
                                        "obj_id" => $r["obj_id"]);
                }
                return $entries;
        }

        static public function existsIdInRbacObject($a_rbac_id, $a_obj_type, $a_catalog, $a_entry)
        {
                global $ilDB;

                $query = "SELECT meta_identifier_id, obj_id FROM il_meta_identifier ".
                        "WHERE rbac_id = ".$ilDB->quote($a_rbac_id , 'integer').
                        " AND obj_type = ".$ilDB->quote($a_obj_type , 'text').
                        " AND catalog = ".$ilDB->quote($a_catalog , 'text').
                        " AND entry = ".$ilDB->quote($a_entry , 'text');
                $s = $ilDB->query($query);
                if ($r = $ilDB->fetchAssoc($s))
                {
                        return true;
                }
                return false;
        }
        
        static public function readIdData($a_rbac_id, $a_obj_type, $a_catalog, $a_entry)
        {
                global $ilDB;

                $query = "SELECT * FROM il_meta_identifier ".
                        "WHERE rbac_id = ".$ilDB->quote($a_rbac_id , 'integer').
                        " AND obj_type = ".$ilDB->quote($a_obj_type , 'text').
                        " AND catalog = ".$ilDB->quote($a_catalog , 'text').
                        " AND entry = ".$ilDB->quote($a_entry , 'text');
                $s = $ilDB->query($query);
                $data = array();
                while ($r = $ilDB->fetchAssoc($s))
                {
                        $data[] = $r;
                }
                return $data;
        }

}

?>