update to MediaWiki 1.16.0

1 files changed, 268 insertions, 0 deletions

diff --git a/includes/search/SearchOracle.php b/includes/search/SearchOracle.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
+
+/**
+ * @file
+ * @ingroup Search
+ */
+
+/**
+ * Search engine hook base class for Oracle (ConText).
+ * @ingroup Search
+ */
+class SearchOracle extends SearchEngine {
+	
+	private $reservedWords = array ('ABOUT' => 1, 
+									'ACCUM' => 1, 
+									'AND' => 1, 
+									'BT' => 1, 
+									'BTG' => 1, 
+									'BTI' => 1, 
+									'BTP' => 1,
+									'FUZZY' => 1, 
+									'HASPATH' => 1, 
+									'INPATH' => 1, 
+									'MINUS' => 1, 
+									'NEAR' => 1, 
+									'NOT' => 1,
+									'NT' => 1, 
+									'NTG' => 1, 
+									'NTI' => 1, 
+									'NTP' => 1, 
+									'OR' => 1, 
+									'PT' => 1, 
+									'RT' => 1, 
+									'SQE' => 1,
+									'SYN' => 1, 
+									'TR' => 1, 
+									'TRSYN' => 1, 
+									'TT' => 1, 
+									'WITHIN' => 1);
+	
+	function __construct($db) {
+		$this->db = $db;
+	}
+
+	/**
+	 * Perform a full text search query and return a result set.
+	 *
+	 * @param $term String: raw search term
+	 * @return SqlSearchResultSet
+	 */
+	function searchText( $term ) {
+		if ($term == '')
+			return new SqlSearchResultSet(false, '');
+
+		$resultSet = $this->db->resultObject($this->db->query($this->getQuery($this->filter($term), true)));
+		return new SqlSearchResultSet($resultSet, $this->searchTerms);
+	}
+
+	/**
+	 * Perform a title-only search query and return a result set.
+	 *
+	 * @param $term String: raw search term
+	 * @return SqlSearchResultSet
+	 */
+	function searchTitle($term) {
+		if ($term == '')
+			return new SqlSearchResultSet(false, '');
+
+		$resultSet = $this->db->resultObject($this->db->query($this->getQuery($this->filter($term), false)));
+		return new MySQLSearchResultSet($resultSet, $this->searchTerms);
+	}
+
+
+	/**
+	 * Return a partial WHERE clause to exclude redirects, if so set
+	 * @return String
+	 */
+	function queryRedirect() {
+		if ($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
+	 */
+	function queryNamespaces() {
+		if( is_null($this->namespaces) )
+			return '';
+		if ( !count( $this->namespaces ) ) {
+			$namespaces = '0';
+		} else {
+			$namespaces = $this->db->makeList( $this->namespaces );
+		}
+		return 'AND page_namespace IN (' . $namespaces . ')';
+	}
+
+	/**
+	 * Return a LIMIT clause to limit results on the query.
+	 * @return String
+	 */
+	function queryLimit($sql) {
+		return $this->db->limitResult($sql, $this->limit, $this->offset);
+	}
+
+	/**
+	 * Does not do anything for generic search engine
+	 * subclasses may define this though
+	 * @return String
+	 */
+	function queryRanking($filteredTerm, $fulltext) {
+		return ' ORDER BY score(1)';
+	}
+
+	/**
+	 * Construct the full SQL query to do the search.
+	 * The guts shoulds be constructed in queryMain()
+	 * @param $filteredTerm String
+	 * @param $fulltext Boolean
+	 */
+	function getQuery( $filteredTerm, $fulltext ) {
+		return $this->queryLimit($this->queryMain($filteredTerm, $fulltext) . ' ' .
+			$this->queryRedirect() . ' ' .
+			$this->queryNamespaces() . ' ' .
+			$this->queryRanking( $filteredTerm, $fulltext ) . ' ');
+	}
+
+
+	/**
+	 * Picks which field to index on, depending on what type of query.
+	 * @param $fulltext Boolean
+	 * @return String
+	 */
+	function getIndexField($fulltext) {
+		return $fulltext ? 'si_text' : 'si_title';
+	}
+
+	/**
+	 * Get the base part of the search query.
+	 *
+	 * @param $filteredTerm String
+	 * @param $fulltext Boolean
+	 * @return String
+	 */
+	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 ' . $match;
+	}
+
+	/**
+	 * Parse a user input search string, and return an SQL fragment to be used
+	 * as part of a WHERE clause
+	 */
+	function parseQuery($filteredText, $fulltext) {
+		global $wgContLang;
+		$lc = SearchEngine::legalSearchChars();
+		$this->searchTerms = array();
+
+		# FIXME: This doesn't handle parenthetical expressions.
+		$m = array();
+		$searchon = '';
+		if (preg_match_all('/([-+<>~]?)(([' . $lc . ']+)(\*?)|"[^"]*")/',
+			  $filteredText, $m, PREG_SET_ORDER)) {
+			foreach($m as $terms) {
+				// Search terms in all variant forms, only
+				// apply on wiki with LanguageConverter
+				$temp_terms = $wgContLang->autoConvertToAllVariants( $terms[2] );
+				if( is_array( $temp_terms )) {
+					$temp_terms = array_unique( array_values( $temp_terms ));
+					foreach( $temp_terms as $t ) {
+						$searchon .= ($terms[1] == '-' ? ' ~' : ' & ') . $this->escapeTerm( $t );
+					}
+				}
+				else {
+					$searchon .= ($terms[1] == '-' ? ' ~' : ' & ') . $this->escapeTerm( $terms[2] );
+				}
+				if (!empty($terms[3])) {
+					$regexp = preg_quote( $terms[3], '/' );
+					if ($terms[4])
+						$regexp .= "[0-9A-Za-z_]+";
+				} else {
+					$regexp = preg_quote(str_replace('"', '', $terms[2]), '/');
+				}
+				$this->searchTerms[] = $regexp;
+			}
+		}
+
+
+		$searchon = $this->db->addQuotes(ltrim($searchon, ' &'));
+		$field = $this->getIndexField($fulltext);
+		return " CONTAINS($field, $searchon, 1) > 0 ";
+	}
+
+	private function escapeTerm($t) {
+		global $wgContLang;
+		$t = $wgContLang->normalizeForSearch($t);
+		$t = isset($this->reservedWords[strtoupper($t)]) ? '{'.$t.'}' : $t;
+		$t = preg_replace('/^"(.*)"$/', '($1)', $t);
+		$t = preg_replace('/([-&|])/', '\\\\$1', $t);
+		return $t;
+	}
+	/**
+	 * Create or update the search index record for the given page.
+	 * Title and text should be pre-processed.
+	 *
+	 * @param $id Integer
+	 * @param $title String
+	 * @param $text String
+	 */
+	function update($id, $title, $text) {
+		$dbw = wfGetDB(DB_MASTER);
+		$dbw->replace('searchindex',
+			array('si_page'),
+			array(
+				'si_page' => $id,
+				'si_title' => $title,
+				'si_text' => $text
+			), 'SearchOracle::update' );
+		$dbw->query("CALL ctx_ddl.sync_index('si_text_idx')");
+		$dbw->query("CALL ctx_ddl.sync_index('si_title_idx')");
+	}
+
+	/**
+	 * 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),
+			'SearchOracle::updateTitle',
+			array());
+	}
+
+
+	public static function legalSearchChars() {
+		return "\"" . parent::legalSearchChars();
+	}
+}