rebuildRecentchanges.inc

Go to the documentation of this file.

<?php

# Rebuild recent changes table.

function rebuildRecentChangesTable()
{
        $sql = "DROP TABLE IF EXISTS recentchanges";
        wfQuery( $sql );

        $sql = "CREATE TABLE recentchanges (
  rc_timestamp varchar(14) binary NOT NULL default '',
  rc_cur_time varchar(14) binary NOT NULL default '',
  rc_user int(10) unsigned NOT NULL default '0',
  rc_user_text varchar(255) binary NOT NULL default '',
  rc_namespace tinyint(3) unsigned NOT NULL default '0',
  rc_title varchar(255) binary NOT NULL default '',
  rc_comment varchar(255) binary NOT NULL default '',
  rc_minor tinyint(3) unsigned NOT NULL default '0',
  rc_new tinyint(3) unsigned NOT NULL default '0',
  rc_cur_id int(10) unsigned NOT NULL default '0',
  rc_this_oldid int(10) unsigned NOT NULL default '0',
  rc_last_oldid int(10) unsigned NOT NULL default '0',
  INDEX rc_cur_id (rc_cur_id),
  INDEX rc_cur_time (rc_cur_time),
  INDEX rc_timestamp (rc_timestamp),
  INDEX rc_namespace (rc_namespace),
  INDEX rc_title (rc_title)
) TYPE=MyISAM PACK_KEYS=1;";
        wfQuery( $sql );

        print( "Loading from CUR table...\n" );

        $sql = "INSERT INTO recentchanges (rc_timestamp,rc_cur_time,rc_user," .
          "rc_user_text,rc_namespace,rc_title,rc_comment,rc_minor,rc_new," .
          "rc_cur_id,rc_this_oldid,rc_last_oldid) SELECT cur_timestamp," .
          "cur_timestamp,cur_user,cur_user_text,cur_namespace,cur_title," .
          "cur_comment,cur_minor_edit,cur_is_new,cur_id,0,0 FROM cur " .
          "ORDER BY cur_timestamp DESC LIMIT 5000";
        wfQuery( $sql );

        print( "Loading from OLD table...\n" );

        $sql = "INSERT INTO recentchanges (rc_timestamp,rc_cur_time,rc_user," .
      "rc_user_text,rc_namespace,rc_title,rc_comment,rc_minor,rc_new," .
      "rc_cur_id,rc_this_oldid,rc_last_oldid) SELECT old_timestamp,''," .
          "old_user,old_user_text,old_namespace,old_title,old_comment," .
          "old_minor_edit,0,0,old_id,0 FROM old ORDER BY old_timestamp " .
          "DESC LIMIT 5000";
        wfQuery( $sql );

        $sql = "SELECT rc_timestamp FROM recentchanges " .
          "ORDER BY rc_timestamp DESC LIMIT 5000,1";
        $res = wfQuery( $sql );
        $obj = wfFetchObject( $res );
        $ts = $obj->rc_timestamp;

        $sql = "DELETE FROM recentchanges WHERE rc_timestamp < '{$ts}'";
        wfQuery( $sql );

        rebuildRecentChangesTablePass2();
}

function rebuildRecentChangesTablePass2()
{
        $ns = $id = $count = 0;
        $title = $ct =  "";

        print( "Updating links...\n" );

        $sql = "SELECT rc_namespace,rc_title,rc_timestamp FROM recentchanges " .
          "ORDER BY rc_namespace,rc_title,rc_timestamp DESC";
        $res = wfQuery( $sql );

        while ( $obj = wfFetchObject( $res ) ) {
                if ( ! ( $ns == $obj->rc_namespace &&
                           0 == strcmp( $title, wfStrencode( $obj->rc_title ) ) ) ) {

                        $ns = $obj->rc_namespace;
                        $title = wfStrencode( $obj->rc_title );

                        $sql = "SELECT cur_id,cur_timestamp FROM cur WHERE " .
                          "cur_namespace={$ns} AND cur_title='{$title}'";
                        $res2 = wfQuery( $sql );
                        $obj2 = wfFetchObject( $res2 );

                        $id = $obj2->cur_id;
                        $ct = $obj2->cur_timestamp;
                }
                $sql = "SELECT old_id FROM old WHERE old_namespace={$ns} " .
                  "AND old_title='{$title}' AND old_timestamp < '" .
                  "{$obj->rc_timestamp}' ORDER BY old_timestamp DESC LIMIT 1";
                $res2 = wfQuery( $sql );

                if ( 0 != wfNumRows( $res2 ) ) {
                        $obj2 = wfFetchObject( $res2 );

                        $sql = "UPDATE recentchanges SET rc_cur_id={$id},rc_cur_time=" .
                          "'{$ct}',rc_last_oldid={$obj2->old_id} WHERE " .
                          "rc_namespace={$ns} AND rc_title='{$title}' AND " .
                          "rc_timestamp='{$obj->rc_timestamp}'";
                        wfQuery( $sql );
                } else {
                        $sql = "UPDATE recentchanges SET rc_cur_id={$id},rc_cur_time=" .
                          "'{$ct}' WHERE rc_namespace={$ns} AND rc_title='{$title}' " .
                          "AND rc_timestamp='{$obj->rc_timestamp}'";
                        wfQuery( $sql );
                }

                if ( 0 == ( ++$count % 500 ) ) {
                        printf( "%d records processed.\n", $count );
                }
        }
}


?>

---