maintenance/populateRecentChangesSource.php

   1 <?php
   2 /**
   3  * Upgrade script to populate the rc_source field
   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 the rc_source field.
  28  *
  29  * @ingroup Maintenance
  30  * @since 1.22
  31  */
  32 class PopulateRecentChangesSource extends LoggedUpdateMaintenance {
  33         public function __construct() {
  34                 parent::__construct();
  35                 $this->mDescription =
  36                         "Populates rc_source field of the recentchanges table with the data in rc_type.";
  37                 $this->setBatchSize( 100 );
  38         }
  39
  40         protected function doDBUpdates() {
  41                 $dbw = $this->getDB( DB_MASTER );
  42                 if ( !$dbw->fieldExists( 'recentchanges', 'rc_source' ) ) {
  43                         $this->error( 'rc_source field in recentchanges table does not exist.' );
  44                 }
  45
  46                 $start = $dbw->selectField( 'recentchanges', 'MIN(rc_id)', false, __METHOD__ );
  47                 if ( !$start ) {
  48                         $this->output( "Nothing to do.\n" );
  49                         return true;
  50                 }
  51                 $end = $dbw->selectField( 'recentchanges', 'MAX(rc_id)', false, __METHOD__ );
  52                 $end += $this->mBatchSize - 1;
  53                 $blockStart = $start;
  54                 $blockEnd = $start + $this->mBatchSize - 1;
  55
  56                 $updatedValues = $this->buildUpdateCondition( $dbw );
  57
  58                 while ( $blockEnd <= $end ) {
  59                         $cond = "rc_id BETWEEN $blockStart AND $blockEnd";
  60
  61                         $dbw->update(
  62                                 'recentchanges',
  63                                 array( $updatedValues ),
  64                                 array(
  65                                         "rc_source = ''",
  66                                         "rc_id BETWEEN $blockStart AND $blockEnd"
  67                                 ),
  68                                 __METHOD__
  69                         );
  70
  71                         $this->output( "." );
  72                         wfWaitForSlaves();
  73
  74                         $blockStart += $this->mBatchSize;
  75                         $blockEnd += $this->mBatchSize;
  76                 }
  77
  78                 $this->output( "\nDone.\n" );
  79         }
  80
  81         protected function getUpdateKey() {
  82                 return __CLASS__;
  83         }
  84
  85         protected function buildUpdateCondition( DatabaseBase $dbw ) {
  86                 $rcNew = $dbw->addQuotes( RC_NEW );
  87                 $rcSrcNew = $dbw->addQuotes( RecentChange::SRC_NEW );
  88                 $rcEdit = $dbw->addQuotes( RC_EDIT );
  89                 $rcSrcEdit = $dbw->addQuotes( RecentChange::SRC_EDIT );
  90                 $rcLog = $dbw->addQuotes( RC_LOG );
  91                 $rcSrcLog = $dbw->addQuotes( RecentChange::SRC_LOG );
  92                 $rcExternal = $dbw->addQuotes( RC_EXTERNAL );
  93                 $rcSrcExternal = $dbw->addQuotes( RecentChange::SRC_EXTERNAL );
  94
  95                 return "rc_source = CASE
  96                                         WHEN rc_type = $rcNew THEN $rcSrcNew
  97                                         WHEN rc_type = $rcEdit THEN $rcSrcEdit
  98                                         WHEN rc_type = $rcLog THEN $rcSrcLog
  99                                         WHEN rc_type = $rcExternal THEN $rcSrcExternal
 100                                         ELSE ''
 101                                 END";
 102         }
 103 }
 104
 105 $maintClass = "PopulateRecentChangesSource";
 106 require_once RUN_MAINTENANCE_IF_MAIN;