109 lines
3.4 KiB
PHP
109 lines
3.4 KiB
PHP
<?php
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# Copyright (C) 2004 Brion Vibber <brion@pobox.com>
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# http://www.mediawiki.org/
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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# http://www.gnu.org/copyleft/gpl.html
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/**
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* Search engine hook for MySQL 3.23.x
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* @package MediaWiki
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* @subpackage Search
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*/
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require_once( 'SearchEngine.php' );
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class SearchMySQL3 extends SearchEngine {
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function SearchMySQL3( &$db ) {
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$this->db =& $db;
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}
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function getIndexField( $fulltext ) {
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return $fulltext ? 'si_text' : 'si_title';
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}
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function parseQuery( $filteredText, $fulltext ) {
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global $wgDBminWordLen, $wgContLang;
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$field = $this->getIndexField( $fulltext );
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# on non mysql4 database: get list of words we don't want to search for
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require_once( 'FulltextStoplist.php' );
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$lc = SearchEngine::legalSearchChars() . '()';
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$q = preg_replace( "/([()])/", " \\1 ", $filteredText );
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$q = preg_replace( "/\\s+/", " ", $q );
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$w = explode( ' ', trim( $q ) );
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$last = $cond = '';
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foreach ( $w as $word ) {
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$word = $wgContLang->stripForSearch( $word );
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if ( 'and' == $word || 'or' == $word || 'not' == $word
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|| '(' == $word || ')' == $word ) {
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$cond .= ' ' . strtoupper( $word );
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$last = '';
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} else if ( strlen( $word ) < $wgDBminWordLen ) {
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continue;
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} else if ( FulltextStoplist::inList( $word ) ) {
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continue;
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} else {
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if ( '' != $last ) { $cond .= ' AND'; }
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$cond .= " (MATCH ($field) AGAINST ('" .
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$this->db->strencode( $word ). "'))";
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$last = $word;
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$this->searchTerms[] = "\\b" . preg_quote( $word, '/' ) . "\\b";
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}
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}
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if ( 0 == count( $this->searchTerms ) ) {
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return null;
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}
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return '(' . $cond . ' )';
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}
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function queryMain( $filteredTerm, $fulltext ) {
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$match = $this->parseQuery( $filteredTerm, $fulltext );
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$page = $this->db->tableName( 'page' );
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$text = $this->db->tableName( 'text' );
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$searchindex = $this->db->tableName( 'searchindex' );
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return 'SELECT page_id, page_namespace, page_title, old_flags, old_text ' .
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"FROM $page,$text,$searchindex " .
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'WHERE page_id=si_page AND page_latest=old_id AND ' . $match;
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}
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function update( $id, $title, $text ) {
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$dbw=& wfGetDB(DB_MASTER);
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$dbw->replace( 'searchindex', array(array('si_page')),
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array(
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'si_page' => $id,
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'si_title' => $title,
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'si_text' => $text
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), 'SearchMySQL3::update' );
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}
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function updateTitle($id,$title) {
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$dbw=& wfGetDB(DB_MASTER);
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$lowpri=$dbw->lowPriorityOption();
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$searchindex = $dbw->tableName( 'searchindex' );
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$sql = "UPDATE $lowpri $searchindex SET si_title='" .
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$dbw->strencode( $title ) .
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"' WHERE si_page={$id}";
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$dbw->query( $sql, "SearchMySQL3::updateTitle" );
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}
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}
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?>
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