+++ /dev/null
-<?php
-# Copyright (C) 2004 Brion Vibber <brion@pobox.com>
-# http://www.mediawiki.org/
-#
-# 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.
-# http://www.gnu.org/copyleft/gpl.html
-
-/**
- * Search engine hook base class for MySQL.
- * Specific bits for MySQL 3 and 4 variants are in child classes.
- * @package MediaWiki
- * @subpackage Search
- */
-
-/** */
-require_once( 'SearchEngine.php' );
-
-/** @package MediaWiki */
-class SearchMySQL extends SearchEngine {
- /**
- * Perform a full text search query and return a result set.
- *
- * @param string $term - Raw search term
- * @return MySQLSearchResultSet
- * @access public
- */
- function searchText( $term ) {
- $resultSet = $this->db->resultObject( $this->db->query( $this->getQuery( $this->filter( $term ), true ) ) );
- return new MySQLSearchResultSet( $resultSet, $this->searchTerms );
- }
-
- /**
- * Perform a title-only search query and return a result set.
- *
- * @param string $term - Raw search term
- * @return MySQLSearchResultSet
- * @access public
- */
- function searchTitle( $term ) {
- $resultSet = $this->db->resultObject( $this->db->query( $this->getQuery( $this->filter( $term ), false ) ) );
- return new MySQLSearchResultSet( $resultSet, $this->searchTerms );
- }
-
-
- /**
- * Return a partial WHERE clause to exclude redirects, if so set
- * @return string
- * @access private
- */
- function queryRedirect() {
- if( $this->showRedirects ) {
- return '';
- } else {
- return 'AND page_is_redirect=0';
- }
- }
-
- /**
- * Return a partial WHERE clause to limit the search to the given namespaces
- * @return string
- * @access private
- */
- function queryNamespaces() {
- $namespaces = implode( ',', $this->namespaces );
- if ($namespaces == '') {
- $namespaces = '0';
- }
- return 'AND page_namespace IN (' . $namespaces . ')';
- }
-
- /**
- * Return a LIMIT clause to limit results on the query.
- * @return string
- * @access private
- */
- function queryLimit() {
- return $this->db->limitResult( $this->limit, $this->offset );
- }
-
- /**
- * Does not do anything for generic search engine
- * subclasses may define this though
- * @return string
- * @access private
- */
- function queryRanking( $filteredTerm, $fulltext ) {
- return '';
- }
-
- /**
- * Construct the full SQL query to do the search.
- * The guts shoulds be constructed in queryMain()
- * @param string $filteredTerm
- * @param bool $fulltext
- * @access private
- */
- function getQuery( $filteredTerm, $fulltext ) {
- return $this->queryMain( $filteredTerm, $fulltext ) . ' ' .
- $this->queryRedirect() . ' ' .
- $this->queryNamespaces() . ' ' .
- $this->queryRanking( $filteredTerm, $fulltext ) . ' ' .
- $this->queryLimit();
- }
-
-
- /**
- * Picks which field to index on, depending on what type of query.
- * @param bool $fulltext
- * @return string
- */
- function getIndexField( $fulltext ) {
- return $fulltext ? 'si_text' : 'si_title';
- }
-
- /**
- * Get the base part of the search query.
- * The actual match syntax will depend on the server
- * version; MySQL 3 and MySQL 4 have different capabilities
- * in their fulltext search indexes.
- *
- * @param string $filteredTerm
- * @param bool $fulltext
- * @return string
- * @access private
- */
- function queryMain( $filteredTerm, $fulltext ) {
- $match = $this->parseQuery( $filteredTerm, $fulltext );
- $page = $this->db->tableName( 'page' );
- $searchindex = $this->db->tableName( 'searchindex' );
- return 'SELECT page_id, page_namespace, page_title ' .
- "FROM $page,$searchindex " .
- 'WHERE page_id=si_page AND ' . $match;
- }
-
- /**
- * Create or update the search index record for the given page.
- * Title and text should be pre-processed.
- *
- * @param int $id
- * @param string $title
- * @param string $text
- */
- function update( $id, $title, $text ) {
- $dbw=& wfGetDB( DB_MASTER );
- $dbw->replace( 'searchindex',
- array( 'si_page' ),
- array(
- 'si_page' => $id,
- 'si_title' => $title,
- 'si_text' => $text
- ), 'SearchMySQL4::update' );
- }
-
- /**
- * Update a search index record's title only.
- * Title should be pre-processed.
- *
- * @param int $id
- * @param string $title
- */
- function updateTitle( $id, $title ) {
- $dbw =& wfGetDB( DB_MASTER );
-
- $dbw->update( 'searchindex',
- array( 'si_title' => $title ),
- array( 'si_page' => $id ),
- 'SearchMySQL4::updateTitle',
- array( $dbw->lowPriorityOption() ) );
- }
-}
-
-/** @package MediaWiki */
-class MySQLSearchResultSet extends SearchResultSet {
- function MySQLSearchResultSet( $resultSet, $terms ) {
- $this->mResultSet = $resultSet;
- $this->mTerms = $terms;
- }
-
- function termMatches() {
- return $this->mTerms;
- }
-
- function numRows() {
- return $this->mResultSet->numRows();
- }
-
- function next() {
- $row = $this->mResultSet->fetchObject();
- if( $row === false ) {
- return false;
- } else {
- return new SearchResult( $row );
- }
- }
-}
-
-?>
scripts.mit.edu / autoinstallsdev / mediawiki.git / blobdiff