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   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          $this->addOption( 'lastUpdatedId', "Highest page_id with updated links", false, true );
  36      }
  37  
  38  	protected function getUpdateKey() {
  39          return 'populate *_from_namespace';
  40      }
  41  
  42  	protected function updateSkippedMessage() {
  43          return '*_from_namespace column of backlink tables already populated.';
  44      }
  45  
  46  	public function doDBUpdates() {
  47          $force = $this->getOption( 'force' );
  48  
  49          $db = $this->getDB( DB_MASTER );
  50  
  51          $this->output( "Updating *_from_namespace fields in links tables.\n" );
  52  
  53          $start = $this->getOption( 'lastUpdatedId' );
  54          if ( !$start ) {
  55              $start = $db->selectField( 'page', 'MIN(page_id)', false, __METHOD__ );
  56          }
  57          if ( !$start ) {
  58              $this->output( "Nothing to do." );
  59              return false;
  60          }
  61          $end = $db->selectField( 'page', 'MAX(page_id)', false, __METHOD__ );
  62  
  63          # Do remaining chunk
  64          $end += $this->mBatchSize - 1;
  65          $blockStart = $start;
  66          $blockEnd = $start + $this->mBatchSize - 1;
  67          while ( $blockEnd <= $end ) {
  68              $this->output( "...doing page_id from $blockStart to $blockEnd\n" );
  69              $cond = "page_id BETWEEN $blockStart AND $blockEnd";
  70              $res = $db->select( 'page', array( 'page_id', 'page_namespace' ), $cond, __METHOD__ );
  71              foreach ( $res as $row ) {
  72                  $db->update( 'pagelinks',
  73                      array( 'pl_from_namespace' => $row->page_namespace ),
  74                      array( 'pl_from' => $row->page_id ),
  75                      __METHOD__
  76                  );
  77                  $db->update( 'templatelinks',
  78                      array( 'tl_from_namespace' => $row->page_namespace ),
  79                      array( 'tl_from' => $row->page_id ),
  80                      __METHOD__
  81                  );
  82                  $db->update( 'imagelinks',
  83                      array( 'il_from_namespace' => $row->page_namespace ),
  84                      array( 'il_from' => $row->page_id ),
  85                      __METHOD__
  86                  );
  87              }
  88              $blockStart += $this->mBatchSize - 1;
  89              $blockEnd += $this->mBatchSize - 1;
  90              wfWaitForSlaves();
  91          }
  92          return true;
  93      }
  94  }
  95  
  96  $maintClass = "PopulateBacklinkNamespace";
  97  require_once RUN_MAINTENANCE_IF_MAIN;