<?php
/**
- * Rebuild search index table from scratch. This takes several
+ * Rebuild search index table from scratch. This may take several
* hours, depending on the database size and server configuration.
*
- * This is only for MySQL (see bug 9905).
* Postgres is trigger-based and should never need rebuilding.
*
* This program is free software; you can redistribute it and/or modify
* @todo document
*/
-require_once( dirname(__FILE__) . '/Maintenance.php' );
+require_once( dirname( __FILE__ ) . '/Maintenance.php' );
class RebuildTextIndex extends Maintenance {
-
const RTI_CHUNK_SIZE = 500;
+ /**
+ * @var DatabaseBase
+ */
+ private $db;
+
public function __construct() {
parent::__construct();
$this->mDescription = "Rebuild search index table from scratch";
}
+ public function getDbType() {
+ return Maintenance::DB_ADMIN;
+ }
+
public function execute() {
global $wgTitle;
-
- // Only do this for MySQL
- $database = wfGetDB( DB_MASTER );
- if( !$database instanceof DatabaseMysql ) {
- $this->error( "This script is only for MySQL.", true );
+
+ // Shouldn't be needed for Postgres
+ $this->db = wfGetDB( DB_MASTER );
+ if ( $this->db->getType() == 'postgres' ) {
+ $this->error( "This script is not needed when using Postgres.\n", true );
+ }
+
+ $this->db = wfGetDB( DB_MASTER );
+ if ( $this->db->getType() == 'sqlite' ) {
+ if ( !DatabaseSqlite::getFulltextSearchModule() ) {
+ $this->error( "Your version of SQLite module for PHP doesn't support full-text search (FTS3).\n", true );
+ }
+ if ( !$this->db->checkForEnabledSearch() ) {
+ $this->error( "Your database schema is not configured for full-text search support. Run update.php.\n", true );
+ }
}
$wgTitle = Title::newFromText( "Rebuild text index script" );
-
- $this->dropTextIndex( $database );
- $this->doRebuildTextIndex( $database );
- $this->createTextIndex( $database );
-
- $this->output( "Done.\n" );
- }
-
- private function dropTextIndex( &$database ) {
- $searchindex = $database->tableName( 'searchindex' );
- if ( $database->indexExists( "searchindex", "si_title" ) ) {
- $this->output( "Dropping index...\n" );
- $sql = "ALTER TABLE $searchindex DROP INDEX si_title, DROP INDEX si_text";
- $database->query($sql, "dropTextIndex" );
+
+ if ( $this->db->getType() == 'mysql' ) {
+ $this->dropMysqlTextIndex();
+ $this->populateSearchIndex();
+ $this->createMysqlTextIndex();
+ } else {
+ $this->clearSearchIndex();
+ $this->populateSearchIndex();
}
- }
- private function createTextIndex( &$database ) {
- $searchindex = $database->tableName( 'searchindex' );
- $this->output( "\nRebuild the index...\n" );
- $sql = "ALTER TABLE $searchindex ADD FULLTEXT si_title (si_title), " .
- "ADD FULLTEXT si_text (si_text)";
- $database->query($sql, "createTextIndex" );
+ $this->output( "Done.\n" );
}
-
- private function doRebuildTextIndex( &$database ) {
- list ($page, $revision, $text, $searchindex) = $database->tableNamesN( 'page', 'revision', 'text', 'searchindex' );
- $sql = "SELECT MAX(page_id) AS count FROM $page";
- $res = $database->query($sql, "rebuildTextIndex" );
- $s = $database->fetchObject($res);
+ /**
+ * Populates the search index with content from all pages
+ */
+ protected function populateSearchIndex() {
+ $res = $this->db->select( 'page', 'MAX(page_id) AS count' );
+ $s = $this->db->fetchObject( $res );
$count = $s->count;
$this->output( "Rebuilding index fields for {$count} pages...\n" );
$n = 0;
-
+
while ( $n < $count ) {
- $this->output( $n . "\n" );
+ if ( $n ) {
+ $this->output( $n . "\n" );
+ }
$end = $n + self::RTI_CHUNK_SIZE - 1;
- $sql = "SELECT page_id, page_namespace, page_title, old_flags, old_text
- FROM $page, $revision, $text
- WHERE page_id BETWEEN $n AND $end
- AND page_latest=rev_id
- AND rev_text_id=old_id";
- $res = $database->query($sql, "rebuildTextIndex" );
-
- while( $s = $database->fetchObject($res) ) {
+
+ $res = $this->db->select( array( 'page', 'revision', 'text' ),
+ array( 'page_id', 'page_namespace', 'page_title', 'old_flags', 'old_text' ),
+ array( "page_id BETWEEN $n AND $end", 'page_latest = rev_id', 'rev_text_id = old_id' ),
+ __METHOD__
+ );
+
+ foreach ( $res as $s ) {
$revtext = Revision::getRevisionText( $s );
$u = new SearchUpdate( $s->page_id, $s->page_title, $revtext );
$u->doUpdate();
}
- $database->freeResult( $res );
$n += self::RTI_CHUNK_SIZE;
}
}
+
+ /**
+ * (MySQL only) Drops fulltext index before populating the table.
+ */
+ private function dropMysqlTextIndex() {
+ $searchindex = $this->db->tableName( 'searchindex' );
+ if ( $this->db->indexExists( 'searchindex', 'si_title', __METHOD__ ) ) {
+ $this->output( "Dropping index...\n" );
+ $sql = "ALTER TABLE $searchindex DROP INDEX si_title, DROP INDEX si_text";
+ $this->db->query( $sql, __METHOD__ );
+ }
+ }
+
+ /**
+ * (MySQL only) Adds back fulltext index after populating the table.
+ */
+ private function createMysqlTextIndex() {
+ $searchindex = $this->db->tableName( 'searchindex' );
+ $this->output( "\nRebuild the index...\n" );
+ $sql = "ALTER TABLE $searchindex ADD FULLTEXT si_title (si_title), " .
+ "ADD FULLTEXT si_text (si_text)";
+ $this->db->query( $sql, __METHOD__ );
+ }
+
+ /**
+ * Deletes everything from search index.
+ */
+ private function clearSearchIndex() {
+ $this->output( 'Clearing searchindex table...' );
+ $this->db->delete( 'searchindex', '*', __METHOD__ );
+ $this->output( "Done\n" );
+ }
}
$maintClass = "RebuildTextIndex";
-require_once( DO_MAINTENANCE );
+require_once( RUN_MAINTENANCE_IF_MAIN );
dépôts / lhc / web / wiklou.git / blobdiff