maintenance/populateBacklinkNamespace.php

   1 <?php
   2 /**
   3  * Optional upgrade script to populate *_from_namespace fields
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Maintenance
  22  */
  23
  24 require_once __DIR__ . '/Maintenance.php';
  25
  26 /**
  27  * Maintenance script to populate *_from_namespace fields
  28  *
  29  * @ingroup Maintenance
  30  */
  31 class PopulateBacklinkNamespace extends LoggedUpdateMaintenance {
  32         public function __construct() {
  33                 parent::__construct();
  34                 $this->mDescription = "Populate the *_from_namespace fields";
  35         }
  36
  37         protected function getUpdateKey() {
  38                 return 'populate *_from_namespace';
  39         }
  40
  41         protected function updateSkippedMessage() {
  42                 return '*_from_namespace column of backlink tables already populated.';
  43         }
  44
  45         public function doDBUpdates() {
  46                 $force = $this->getOption( 'force' );
  47
  48                 $db = $this->getDB( DB_MASTER );
  49
  50                 $this->output( "Updating *_from_namespace fields in links tables.\n" );
  51
  52                 $start = $db->selectField( 'page', 'MIN(page_id)', false, __METHOD__ );
  53                 if ( !$start ) {
  54                         $this->output( "Nothing to do." );
  55                         return false;
  56                 }
  57                 $end = $db->selectField( 'page', 'MAX(page_id)', false, __METHOD__ );
  58
  59                 # Do remaining chunk
  60                 $end += $this->mBatchSize - 1;
  61                 $blockStart = $start;
  62                 $blockEnd = $start + $this->mBatchSize - 1;
  63                 while ( $blockEnd <= $end ) {
  64                         $this->output( "...doing page_id from $blockStart to $blockEnd\n" );
  65                         $cond = "page_id BETWEEN $blockStart AND $blockEnd";
  66                         $res = $db->select( 'page', array( 'page_id', 'page_namespace' ), $cond, __METHOD__ );
  67                         foreach ( $res as $row ) {
  68                                 $db->update( 'pagelinks',
  69                                         array( 'pl_from_namespace' => $row->page_namespace ),
  70                                         array( 'pl_from' => $row->page_id ),
  71                                         __METHOD__
  72                                 );
  73                                 $db->update( 'templatelinks',
  74                                         array( 'tl_from_namespace' => $row->page_namespace ),
  75                                         array( 'tl_from' => $row->page_id ),
  76                                         __METHOD__
  77                                 );
  78                                 $db->update( 'imagelinks',
  79                                         array( 'il_from_namespace' => $row->page_namespace ),
  80                                         array( 'il_from' => $row->page_id ),
  81                                         __METHOD__
  82                                 );
  83                         }
  84                         $blockStart += $this->mBatchSize - 1;
  85                         $blockEnd += $this->mBatchSize - 1;
  86                         wfWaitForSlaves();
  87                 }
  88                 return true;
  89         }
  90 }
  91
  92 $maintClass = "PopulateBacklinkNamespace";
  93 require_once RUN_MAINTENANCE_IF_MAIN;