MediaWiki 1.7.1 wiederhergestellt

1 files changed, 123 insertions, 0 deletions

diff --git a/includes/SearchTsearch2.php b/includes/SearchTsearch2.php
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+++ b/includes/SearchTsearch2.php
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+<?php
+# Copyright (C) 2004 Brion Vibber <brion@pobox.com>, Domas Mituzas <domas.mituzas@gmail.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 for PostgreSQL / Tsearch2
+ * @package MediaWiki
+ * @subpackage Search
+ */
+
+/**
+ * @todo document
+ * @package MediaWiki
+ * @subpackage Search
+ */
+class SearchTsearch2 extends SearchEngine {
+	var $strictMatching = false;
+
+	function SearchTsearch2( &$db ) {
+		$this->db =& $db;
+		$this->mRanking = true;
+	}
+
+	function getIndexField( $fulltext ) {
+		return $fulltext ? 'si_text' : 'si_title';
+	}
+
+	function parseQuery( $filteredText, $fulltext ) {
+		global $wgContLang;
+		$lc = SearchEngine::legalSearchChars();
+		$searchon = '';
+		$this->searchTerms = array();
+
+		# FIXME: This doesn't handle parenthetical expressions.
+		if( preg_match_all( '/([-+<>~]?)(([' . $lc . ']+)(\*?)|"[^"]*")/',
+			  $filteredText, $m, PREG_SET_ORDER ) ) {
+			foreach( $m as $terms ) {
+				if( $searchon !== '' ) $searchon .= ' ';
+				if( $this->strictMatching && ($terms[1] == '') ) {
+					$terms[1] = '+';
+				}
+				$searchon .= $terms[1] . $wgContLang->stripForSearch( $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[] = $regexp;
+			}
+			wfDebug( "Would search with '$searchon'\n" );
+			wfDebug( "Match with /\b" . implode( '\b|\b', $this->searchTerms ) . "\b/\n" );
+		} else {
+			wfDebug( "Can't understand search query '{$this->filteredText}'\n" );
+		}
+
+		$searchon = preg_replace('/(\s+)/','&',$searchon);
+		$searchon = $this->db->strencode( $searchon );
+		return $searchon;
+	}
+
+	function queryRanking($filteredTerm, $fulltext) {
+		$field = $this->getIndexField( $fulltext );
+		$searchon = $this->parseQuery($filteredTerm,$fulltext);
+		if ($this->mRanking)
+			return " ORDER BY rank($field,to_tsquery('$searchon')) DESC";
+		else
+			return "";
+	}
+
+
+	function queryMain( $filteredTerm, $fulltext ) {
+		$match = $this->parseQuery( $filteredTerm, $fulltext );
+		$field = $this->getIndexField( $fulltext );
+		$cur = $this->db->tableName( 'cur' );
+		$searchindex = $this->db->tableName( 'searchindex' );
+		return 'SELECT cur_id, cur_namespace, cur_title, cur_text ' .
+			"FROM $cur,$searchindex " .
+			'WHERE cur_id=si_page AND ' .
+			" $field @@ to_tsquery ('$match') " ;
+	}
+
+	function update( $id, $title, $text ) {
+	        $dbw=& wfGetDB(DB_MASTER);
+		$searchindex = $dbw->tableName( 'searchindex' );
+		$sql = "DELETE FROM $searchindex WHERE si_page={$id}";
+		$dbw->query($sql,"SearchTsearch2:update");
+		$sql = "INSERT INTO $searchindex (si_page,si_title,si_text) ".
+			" VALUES ( $id, to_tsvector('".
+				$dbw->strencode($title).
+				"'),to_tsvector('".
+				$dbw->strencode( $text)."')) ";
+		$dbw->query($sql,"SearchTsearch2:update");
+	}
+
+	function updateTitle($id,$title) {
+	        $dbw=& wfGetDB(DB_MASTER);
+	        $searchindex = $dbw->tableName( 'searchindex' );
+	        $sql = "UPDATE $searchindex SET si_title=to_tsvector('" .
+	                  $db->strencode( $title ) .
+	                  "') WHERE si_page={$id}";
+
+	        $dbw->query( $sql, "SearchMySQL4::updateTitle" );
+	}
+
+}
+
+?>