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<?php
/**
* Script will find all rows in the categorylinks table whose collation is
* out-of-date (cl_collation != $wgCategoryCollation) and repopulate cl_sortkey
* using the page title and cl_sortkey_prefix.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup Maintenance
* @author Aryeh Gregor (Simetrical)
*/
#$optionsWithArgs = array( 'begin', 'max-slave-lag' );
require_once( dirname( __FILE__ ) . '/Maintenance.php' );
class UpdateCollation extends Maintenance {
const BATCH_SIZE = 50; // Number of rows to process in one batch
const SYNC_INTERVAL = 20; // Wait for slaves after this many batches
public function __construct() {
parent::__construct();
global $wgCategoryCollation;
$this->mDescription = <<<TEXT
This script will find all rows in the categorylinks table whose collation is
out-of-date (cl_collation != '$wgCategoryCollation') and repopulate cl_sortkey
using the page title and cl_sortkey_prefix. If everything's collation is
up-to-date, it will do nothing.
TEXT;
$this->addOption( 'force', 'Run on all rows, even if the collation is ' .
'supposed to be up-to-date.' );
$this->addOption( 'previous-collation', 'Set the previous value of ' .
'$wgCategoryCollation here to speed up this script, especially if your ' .
'categorylinks table is large. This will only update rows with that ' .
'collation, though, so it may miss out-of-date rows with a different, ' .
'even older collation.', false, true );
}
public function execute() {
global $wgCategoryCollation, $wgMiserMode;
$dbw = $this->getDB( DB_MASTER );
$force = $this->getOption( 'force' );
$options = array( 'LIMIT' => self::BATCH_SIZE, 'STRAIGHT_JOIN' );
if ( $force ) {
$options['ORDER BY'] = 'cl_from, cl_to';
$collationConds = array();
} else {
if ( $this->hasOption( 'previous-collation' ) ) {
$collationConds['cl_collation'] = $this->getOption( 'previous-collation' );
} else {
$collationConds = array( 0 =>
'cl_collation != ' . $dbw->addQuotes( $wgCategoryCollation )
);
}
if ( !$wgMiserMode ) {
$count = $dbw->selectField(
'categorylinks',
'COUNT(*)',
$collationConds,
__METHOD__
);
if ( $count == 0 ) {
$this->output( "Collations up-to-date.\n" );
return;
}
$this->output( "Fixing collation for $count rows.\n" );
}
}
$count = 0;
$batchCount = 0;
$batchConds = array();
do {
$this->output( "Selecting next " . self::BATCH_SIZE . " rows..." );
$res = $dbw->select(
array( 'categorylinks', 'page' ),
array( 'cl_from', 'cl_to', 'cl_sortkey_prefix', 'cl_collation',
'cl_sortkey', 'page_namespace', 'page_title'
),
array_merge( $collationConds, $batchConds, array( 'cl_from = page_id' ) ),
__METHOD__,
$options
);
$this->output( " processing..." );
$dbw->begin();
foreach ( $res as $row ) {
$title = Title::newFromRow( $row );
if ( !$row->cl_collation ) {
# This is an old-style row, so the sortkey needs to be
# converted.
if ( $row->cl_sortkey == $title->getText()
|| $row->cl_sortkey == $title->getPrefixedText() ) {
$prefix = '';
} else {
# Custom sortkey, use it as a prefix
$prefix = $row->cl_sortkey;
}
} else {
$prefix = $row->cl_sortkey_prefix;
}
# cl_type will be wrong for lots of pages if cl_collation is 0,
# so let's update it while we're here.
if ( $title->getNamespace() == NS_CATEGORY ) {
$type = 'subcat';
} elseif ( $title->getNamespace() == NS_FILE ) {
$type = 'file';
} else {
$type = 'page';
}
$dbw->update(
'categorylinks',
array(
'cl_sortkey' => Collation::singleton()->getSortKey(
$title->getCategorySortkey( $prefix ) ),
'cl_sortkey_prefix' => $prefix,
'cl_collation' => $wgCategoryCollation,
'cl_type' => $type,
'cl_timestamp = cl_timestamp',
),
array( 'cl_from' => $row->cl_from, 'cl_to' => $row->cl_to ),
__METHOD__
);
}
$dbw->commit();
if ( $force && $row ) {
$encFrom = $dbw->addQuotes( $row->cl_from );
$encTo = $dbw->addQuotes( $row->cl_to );
$batchConds = array(
"(cl_from = $encFrom AND cl_to > $encTo) " .
" OR cl_from > $encFrom" );
}
$count += $res->numRows();
$this->output( "$count done.\n" );
if ( ++$batchCount % self::SYNC_INTERVAL == 0 ) {
$this->output( "Waiting for slaves ... " );
wfWaitForSlaves();
$this->output( "done\n" );
}
} while ( $res->numRows() == self::BATCH_SIZE );
}
}
$maintClass = "UpdateCollation";
require_once( RUN_MAINTENANCE_IF_MAIN );
|
