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