1 files changed, 98 insertions, 0 deletions
diff --git a/www/wiki/maintenance/populateBacklinkNamespace.php b/www/wiki/maintenance/populateBacklinkNamespace.php
new file mode 100644
index 00000000..e2fd8b5a
--- /dev/null
+++ b/www/wiki/maintenance/populateBacklinkNamespace.php
@@ -0,0 +1,98 @@
+<?php
+/**
+ * Optional upgrade script to populate *_from_namespace fields
+ *
+ * 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
+ */
+
+require_once __DIR__ . '/Maintenance.php';
+
+/**
+ * Maintenance script to populate *_from_namespace fields
+ *
+ * @ingroup Maintenance
+ */
+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() {
+		$force = $this->getOption( 'force' );
+
+		$db = $this->getDB( DB_MASTER );
+
+		$this->output( "Updating *_from_namespace fields in links tables.\n" );
+
+		$start = $this->getOption( 'lastUpdatedId' );
+		if ( !$start ) {
+			$start = $db->selectField( 'page', 'MIN(page_id)', '', __METHOD__ );
+		}
+		if ( !$start ) {
+			$this->output( "Nothing to do." );
+			return false;
+		}
+		$end = $db->selectField( 'page', 'MAX(page_id)', '', __METHOD__ );
+		$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" );
+			$cond = "page_id BETWEEN " . (int)$blockStart . " AND " . (int)$blockEnd;
+			$res = $db->select( 'page', [ 'page_id', 'page_namespace' ], $cond, __METHOD__ );
+			foreach ( $res as $row ) {
+				$db->update( 'pagelinks',
+					[ 'pl_from_namespace' => $row->page_namespace ],
+					[ 'pl_from' => $row->page_id ],
+					__METHOD__
+				);
+				$db->update( 'templatelinks',
+					[ 'tl_from_namespace' => $row->page_namespace ],
+					[ 'tl_from' => $row->page_id ],
+					__METHOD__
+				);
+				$db->update( 'imagelinks',
+					[ 'il_from_namespace' => $row->page_namespace ],
+					[ 'il_from' => $row->page_id ],
+					__METHOD__
+				);
+			}
+			$blockStart += $batchSize - 1;
+			$blockEnd += $batchSize - 1;
+			wfWaitForSlaves();
+		}
+		return true;
+	}
+}
+
+$maintClass = PopulateBacklinkNamespace::class;
+require_once RUN_MAINTENANCE_IF_MAIN;