class.ilMDSearch.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 ilMDSearch
{
        var $mode = '';

        /*
         * instance of query parser
         */
        var $query_parser = null;

        var $db = null;

        function __construct($qp_obj)
        {
                global $ilDB;
                
                $this->query_parser = $qp_obj;
                $this->db = $ilDB;

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

                $this->search_result = new ilSearchResult();
        }

        function setMode($a_mode)
        {
                $this->mode = $a_mode;
        }
        function getMode()
        {
                return $this->mode;
        }


        function &performSearch()
        {
                switch($this->getMode())
                {
                        case 'all':
                                break;
                        case 'keyword':
                                return $this->__searchKeywordsOnly();
                                break;

                        default:
                                echo "ilMDSearch::performSearch() no mode given";
                                return false;
                }
        }



        // Private
        function __searchKeywordsOnly()
        {
                $where = " WHERE ";
                $field = " keyword ";
                $counter = 0;
                foreach($this->query_parser->getQuotedWords() as $word)
                {
                        if($counter++)
                        {
                                $where .= strtoupper($this->query_parser->getCombination());
                        }
                        $where .= $field;
                        $where .= ("LIKE (".$ilDB->quote("%".$word."%").")");
                }

                $query = "SELECT * FROM il_meta_keyword".
                        $where.
                        "ORDER BY meta_keyword_id DESC";

                $res = $this->db->query($query);
                while($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT))
                {
                        $this->search_result->addEntry($row->obj_id,$row->obj_type,$row->rbac_id);
                }

                return $this->search_result;
        }               
}
?>