class.ilAdvancedMDSearch.php

Go to the documentation of this file.

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

include_once 'Services/Search/classes/class.ilAbstractSearch.php';

class ilAdvancedMDSearch extends ilAbstractSearch
{
        protected $definition;
        
        public function __construct($query_parser)
        {
                parent::__construct($query_parser);
        }
        
        public function setDefinition($a_def)
        {
                $this->definition = $a_def;
        }
        
        public function getDefinition()
        {
                return $this->definition;
        }
        
        public function performSearch()
        {
                global $ilDB;
                
                $this->setFields(array('value'));
                
                $and = '';
                if(count($this->getFilter()))
                {
                        $and = "AND ".$ilDB->in('type',$this->getFilter(),false,'text');
                }
                
                
                switch($this->getDefinition()->getFieldType())
                {
                        case ilAdvancedMDFieldDefinition::TYPE_DATE:
                        case ilAdvancedMDFieldDefinition::TYPE_DATETIME:
                                $query = "SELECT amv.obj_id,type ".
                                        "FROM adv_md_values amv ".
                                        "JOIN object_data od ON amv.obj_id = od.obj_id ".
                                        "WHERE value >= ".$ilDB->quote($this->range_start ,'text')." ".
                                        "AND value <= ".$ilDB->quote($this->range_end ,'text')." ".
                                        "AND field_id = ".$this->db->quote($this->getDefinition()->getFieldId() ,'integer')." ".
                                        $and;
                                break;
                        
                        case ilAdvancedMDFieldDefinition::TYPE_SELECT:
                        case ilAdvancedMDFieldDefinition::TYPE_TEXT:
                                $where = $this->__createWhereCondition();
                                $locate = $this->__createLocateString();
                                
                                $query = "SELECT amv.obj_id,type ".
                                        $locate.
                                        "FROM adv_md_values amv ".
                                        "JOIN object_data od ON amv.obj_id = od.obj_id ".
                                        $where.
                                        "AND field_id = ".$this->db->quote($this->getDefinition()->getFieldId() ,'integer')." ".
                                        $and;
                                break;
                        
                }
                
                if($query)
                {
                        $res = $this->db->query($query);
                        while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                        {
                                $this->search_result->addEntry($row->obj_id,$row->type,$this->__prepareFound($row));
                        }
                }
                return $this->search_result;
        }
        
        public function setTimeRange($start,$end)
        {
                $this->range_start = $start;
                $this->range_end = $end;
        }
        
}

?>