MediaWiki 1.7.1 wiederhergestellt

1 files changed, 206 insertions, 0 deletions

diff --git a/includes/SearchMySQL.php b/includes/SearchMySQL.php
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+<?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.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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
+ */
+
+/** @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
+	 * @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
+	 * @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
+	 * @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
+	 * @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
+	 * @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
+	 * @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 );
+		}
+	}
+}
+
+?>