maintenance/archives/rebuildRecentchanges.inc

   1 <?php
   2
   3 # Rebuild recent changes table.
   4
   5 function rebuildRecentChangesTable()
   6 {
   7         $sql = "DROP TABLE IF EXISTS recentchanges";
   8         wfQuery( $sql );
   9
  10         $sql = "CREATE TABLE recentchanges (
  11   rc_timestamp varchar(14) binary NOT NULL default '',
  12   rc_cur_time varchar(14) binary NOT NULL default '',
  13   rc_user int(10) unsigned NOT NULL default '0',
  14   rc_user_text varchar(255) binary NOT NULL default '',
  15   rc_namespace tinyint(3) unsigned NOT NULL default '0',
  16   rc_title varchar(255) binary NOT NULL default '',
  17   rc_comment varchar(255) binary NOT NULL default '',
  18   rc_minor tinyint(3) unsigned NOT NULL default '0',
  19   rc_new tinyint(3) unsigned NOT NULL default '0',
  20   rc_cur_id int(10) unsigned NOT NULL default '0',
  21   rc_this_oldid int(10) unsigned NOT NULL default '0',
  22   rc_last_oldid int(10) unsigned NOT NULL default '0',
  23   INDEX rc_cur_id (rc_cur_id),
  24   INDEX rc_cur_time (rc_cur_time),
  25   INDEX rc_timestamp (rc_timestamp),
  26   INDEX rc_namespace (rc_namespace),
  27   INDEX rc_title (rc_title)
  28 ) TYPE=MyISAM PACK_KEYS=1;";
  29         wfQuery( $sql );
  30
  31         print( "Loading from CUR table...\n" );
  32
  33         $sql = "INSERT INTO recentchanges (rc_timestamp,rc_cur_time,rc_user," .
  34           "rc_user_text,rc_namespace,rc_title,rc_comment,rc_minor,rc_new," .
  35           "rc_cur_id,rc_this_oldid,rc_last_oldid) SELECT cur_timestamp," .
  36           "cur_timestamp,cur_user,cur_user_text,cur_namespace,cur_title," .
  37           "cur_comment,cur_minor_edit,cur_is_new,cur_id,0,0 FROM cur " .
  38           "ORDER BY cur_timestamp DESC LIMIT 5000";
  39         wfQuery( $sql );
  40
  41         print( "Loading from OLD table...\n" );
  42
  43         $sql = "INSERT INTO recentchanges (rc_timestamp,rc_cur_time,rc_user," .
  44       "rc_user_text,rc_namespace,rc_title,rc_comment,rc_minor,rc_new," .
  45       "rc_cur_id,rc_this_oldid,rc_last_oldid) SELECT old_timestamp,''," .
  46           "old_user,old_user_text,old_namespace,old_title,old_comment," .
  47           "old_minor_edit,0,0,old_id,0 FROM old ORDER BY old_timestamp " .
  48           "DESC LIMIT 5000";
  49         wfQuery( $sql );
  50
  51         $sql = "SELECT rc_timestamp FROM recentchanges " .
  52           "ORDER BY rc_timestamp DESC LIMIT 5000,1";
  53         $res = wfQuery( $sql );
  54         $obj = wfFetchObject( $res );
  55         $ts = $obj->rc_timestamp;
  56
  57         $sql = "DELETE FROM recentchanges WHERE rc_timestamp < '{$ts}'";
  58         wfQuery( $sql );
  59
  60         rebuildRecentChangesTablePass2();
  61 }
  62
  63 function rebuildRecentChangesTablePass2()
  64 {
  65         $ns = $id = $count = 0;
  66         $title = $ct =  "";
  67
  68         print( "Updating links...\n" );
  69
  70         $sql = "SELECT rc_namespace,rc_title,rc_timestamp FROM recentchanges " .
  71           "ORDER BY rc_namespace,rc_title,rc_timestamp DESC";
  72         $res = wfQuery( $sql );
  73
  74         while ( $obj = wfFetchObject( $res ) ) {
  75                 if ( ! ( $ns == $obj->rc_namespace &&
  76                            0 == strcmp( $title, wfStrencode( $obj->rc_title ) ) ) ) {
  77
  78                         $ns = $obj->rc_namespace;
  79                         $title = wfStrencode( $obj->rc_title );
  80
  81                         $sql = "SELECT cur_id,cur_timestamp FROM cur WHERE " .
  82                           "cur_namespace={$ns} AND cur_title='{$title}'";
  83                         $res2 = wfQuery( $sql );
  84                         $obj2 = wfFetchObject( $res2 );
  85
  86                         $id = $obj2->cur_id;
  87                         $ct = $obj2->cur_timestamp;
  88                 }
  89                 $sql = "SELECT old_id FROM old WHERE old_namespace={$ns} " .
  90                   "AND old_title='{$title}' AND old_timestamp < '" .
  91                   "{$obj->rc_timestamp}' ORDER BY old_timestamp DESC LIMIT 1";
  92                 $res2 = wfQuery( $sql );
  93
  94                 if ( 0 != wfNumRows( $res2 ) ) {
  95                         $obj2 = wfFetchObject( $res2 );
  96
  97                         $sql = "UPDATE recentchanges SET rc_cur_id={$id},rc_cur_time=" .
  98                           "'{$ct}',rc_last_oldid={$obj2->old_id} WHERE " .
  99                           "rc_namespace={$ns} AND rc_title='{$title}' AND " .
 100                           "rc_timestamp='{$obj->rc_timestamp}'";
 101                         wfQuery( $sql );
 102                 } else {
 103                         $sql = "UPDATE recentchanges SET rc_cur_id={$id},rc_cur_time=" .
 104                           "'{$ct}' WHERE rc_namespace={$ns} AND rc_title='{$title}' " .
 105                           "AND rc_timestamp='{$obj->rc_timestamp}'";
 106                         wfQuery( $sql );
 107                 }
 108
 109                 if ( 0 == ( ++$count % 500 ) ) {
 110                         printf( "%d records processed.\n", $count );
 111                 }
 112         }
 113 }
 114
 115
 116 ?>