class.ilMDSearch.php

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<?php
 
declare(strict_types=1);
/*
    +-----------------------------------------------------------------------------+
    | 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
{
    private string $mode = '';
 
    private ilQueryParser $query_parser;
    private ilDBInterface $db;
    private ilSearchResult $search_result;
 
    public function __construct(ilQueryParser $qp_obj)
    {
        global $DIC;
 
        $this->query_parser = $qp_obj;
        $this->db = $DIC->database();
        $this->search_result = new ilSearchResult();
    }
 
    public function setMode(string $a_mode): void
    {
        $this->mode = $a_mode;
    }
 
    public function getMode(): string
    {
        return $this->mode;
    }
 
    public function performSearch(): ?ilSearchResult
    {
        switch ($this->getMode()) {
            case 'all':
                break;
            case 'keyword':
                return $this->__searchKeywordsOnly();
                break;
 
            default:
                echo "ilMDSearch::performSearch() no mode given";
                return null;
        }
        return null;
    }
 
    public function __searchKeywordsOnly(): ilSearchResult
    {
        $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 (" . $this->db->quote("%" . $word . "%", ilDBConstants::T_TEXT) . ")");
        }
 
        $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;
    }
}