From a58285fd06c8113c45377c655dd43cef6337e815 Mon Sep 17 00:00:00 2001
From: Pierre Schmitz <pierre@archlinux.de>
Date: Thu, 11 Jan 2007 19:06:07 +0000
Subject: Aktualisierung auf MediaWiki 1.9.0

---
 maintenance/initEditCount.php | 85 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 maintenance/initEditCount.php

(limited to 'maintenance/initEditCount.php')

diff --git a/maintenance/initEditCount.php b/maintenance/initEditCount.php
new file mode 100644
index 00000000..9d165cfb
--- /dev/null
+++ b/maintenance/initEditCount.php
@@ -0,0 +1,85 @@
+<?php
+
+require_once "commandLine.inc";
+
+if( isset( $options['help'] ) ) {
+	die( "Batch-recalculate user_editcount fields from the revision table.
+Options:
+  --quick        Force the update to be done in a single query.
+  --background   Force replication-friendly mode; may be inefficient but
+                 avoids locking tables or lagging slaves with large updates;
+                 calculates counts on a slave if possible.
+
+Background mode will be automatically used if the server is MySQL 4.0
+(which does not support subqueries) or if multiple servers are listed
+in \$wgDBservers, usually indicating a replication environment.
+
+");
+}
+$dbw = wfGetDB( DB_MASTER );
+$user = $dbw->tableName( 'user' );
+$revision = $dbw->tableName( 'revision' );
+
+$dbver = $dbw->getServerVersion();
+
+// Autodetect mode...
+$backgroundMode = count( $wgDBservers ) > 1 ||
+	($dbw instanceof DatabaseMySql && version_compare( $dbver, '4.1' ) < 0);
+
+if( isset( $options['background'] ) ) {
+	$backgroundMode = true;
+} elseif( isset( $options['quick'] ) ) {
+	$backgroundMode = false;
+}
+
+if( $backgroundMode ) {
+	echo "Using replication-friendly background mode...\n";
+	
+	$dbr = wfGetDB( DB_SLAVE );
+	$chunkSize = 100;
+	$lastUser = $dbr->selectField( 'user', 'MAX(user_id)', '', __FUNCTION__ );
+	
+	$start = microtime( true );
+	$migrated = 0;
+	for( $min = 0; $min <= $lastUser; $min += $chunkSize ) {
+		$max = $min + $chunkSize;
+		$result = $dbr->query(
+			"SELECT
+				user_id,
+				COUNT(rev_user) AS user_editcount
+			FROM $user
+			LEFT OUTER JOIN $revision ON user_id=rev_user
+			WHERE user_id > $min AND user_id <= $max
+			GROUP BY user_id",
+			__FUNCTION__ );
+		
+		while( $row = $dbr->fetchObject( $result ) ) {
+			$dbw->update( 'user',
+				array( 'user_editcount' => $row->user_editcount ),
+				array( 'user_id' => $row->user_id ),
+				__FUNCTION__ );
+			++$migrated;
+		}
+		$dbr->freeResult( $result );
+		
+		$delta = microtime( true ) - $start;
+		$rate = ($delta == 0.0) ? 0.0 : $migrated / $delta;
+		printf( "%s %d (%0.1f%%) done in %0.1f secs (%0.3f accounts/sec).\n",
+			$wgDBname,
+			$migrated,
+			min( $max, $lastUser ) / $lastUser * 100.0,
+			$delta,
+			$rate );
+		
+		wfWaitForSlaves( 10 );
+	}
+} else {
+	// Subselect should work on modern MySQLs etc
+	echo "Using single-query mode...\n";
+	$sql = "UPDATE $user SET user_editcount=(SELECT COUNT(*) FROM $revision WHERE rev_user=user_id)";
+	$dbw->query( $sql );
+}
+
+echo "Done!\n";
+
+?>
-- 
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