populateBacklinkNamespace.php

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<?php
require_once __DIR__ . '/Maintenance.php';
 
class PopulateBacklinkNamespace extends LoggedUpdateMaintenance {
    public function __construct() {
        parent::__construct();
        $this->addDescription( 'Populate the *_from_namespace fields' );
        $this->addOption( 'lastUpdatedId', "Highest page_id with updated links", false, true );
    }
 
    protected function getUpdateKey() {
        return 'populate *_from_namespace';
    }
 
    protected function updateSkippedMessage() {
        return '*_from_namespace column of backlink tables already populated.';
    }
 
    public function doDBUpdates() {
        $db = $this->getPrimaryDB();
 
        $this->output( "Updating *_from_namespace fields in links tables.\n" );
 
        $start = $this->getOption( 'lastUpdatedId' );
        if ( !$start ) {
            $start = $db->newSelectQueryBuilder()
                ->select( 'MIN(page_id)' )
                ->from( 'page' )
                ->caller( __METHOD__ )->fetchField();
        }
        if ( !$start ) {
            $this->output( "Nothing to do." );
            return false;
        }
        $end = $db->newSelectQueryBuilder()
            ->select( 'MAX(page_id)' )
            ->from( 'page' )
            ->caller( __METHOD__ )->fetchField();
        $batchSize = $this->getBatchSize();
 
        # Do remaining chunk
        $end += $batchSize - 1;
        $blockStart = $start;
        $blockEnd = $start + $batchSize - 1;
        while ( $blockEnd <= $end ) {
            $this->output( "...doing page_id from $blockStart to $blockEnd\n" );
            $res = $db->newSelectQueryBuilder()
                ->select( [ 'page_id', 'page_namespace' ] )
                ->from( 'page' )
                ->where( [
                    $db->expr( 'page_id', '>=', (int)$blockStart ),
                    $db->expr( 'page_id', '<=', (int)$blockEnd ),
                ] )
                ->caller( __METHOD__ )->fetchResultSet();
            foreach ( $res as $row ) {
                $db->newUpdateQueryBuilder()
                    ->update( 'pagelinks' )
                    ->set( [ 'pl_from_namespace' => $row->page_namespace ] )
                    ->where( [ 'pl_from' => $row->page_id ] )
                    ->caller( __METHOD__ )
                    ->execute();
                $db->newUpdateQueryBuilder()
                    ->update( 'templatelinks' )
                    ->set( [ 'tl_from_namespace' => $row->page_namespace ] )
                    ->where( [ 'tl_from' => $row->page_id ] )
                    ->caller( __METHOD__ )
                    ->execute();
                $db->newUpdateQueryBuilder()
                    ->update( 'imagelinks' )
                    ->set( [ 'il_from_namespace' => $row->page_namespace ] )
                    ->where( [ 'il_from' => $row->page_id ] )
                    ->caller( __METHOD__ )
                    ->execute();
            }
            $blockStart += $batchSize - 1;
            $blockEnd += $batchSize - 1;
            $this->waitForReplication();
        }
        return true;
    }
}
 
$maintClass = PopulateBacklinkNamespace::class;
require_once RUN_MAINTENANCE_IF_MAIN;