3 * Rebuild recent changes table.
7 * @subpackage Maintenance
11 function rebuildRecentChangesTablePass1()
13 $fname = 'rebuildRecentChangesTablePass1';
14 $dbw =& wfGetDB( DB_MASTER );
15 extract( $dbw->tableNames( 'recentchanges', 'cur', 'old' ) );
17 $dbw->delete( 'recentchanges', '*' );
19 print( "Loading from CUR table...\n" );
21 $dbw->insertSelect( 'recentchanges', 'cur',
23 'rc_timestamp' => 'cur_timestamp',
24 'rc_cur_time' => 'cur_timestamp',
25 'rc_user' => 'cur_user',
26 'rc_user_text' => 'cur_user_text',
27 'rc_namespace' => 'cur_namespace',
28 'rc_title' => 'cur_title',
29 'rc_comment' => 'cur_comment',
30 'rc_minor' => 'cur_minor_edit',
32 'rc_new' => 'cur_is_new',
33 'rc_cur_id' => 'cur_id',
36 'rc_type' => $dbw->conditional( 'cur_is_new != 0', RC_NEW, RC_EDIT ),
37 ), '*', $fname, array( 'ORDER BY' => 'inverse_timestamp', 'LIMIT' => 5000 )
40 print( "Loading from OLD table...\n" );
42 $sql = "INSERT INTO $recentchanges (rc_timestamp,rc_cur_time,rc_user," .
43 "rc_user_text,rc_namespace,rc_title,rc_comment,rc_minor,rc_bot,rc_new," .
44 "rc_cur_id,rc_this_oldid,rc_last_oldid,rc_type) SELECT old_timestamp,cur_timestamp," .
45 "old_user,old_user_text,old_namespace,old_title,old_comment," .
46 "old_minor_edit,0,0,cur_id,old_id,0,0 FROM $old,$cur " .
47 "WHERE old_namespace=cur_namespace AND old_title=cur_title ORDER BY $old.inverse_timestamp " .
51 $sql = "SELECT rc_timestamp FROM $recentchanges " .
52 "ORDER BY rc_timestamp DESC" . $dbw->limitResult( 1, 5000 );
53 $res = $dbw->query( $sql );
54 $obj = $dbw->fetchObject( $res );
56 $ts = $obj->rc_timestamp;
58 $sql = "DELETE FROM $recentchanges WHERE rc_timestamp < '{$ts}'";
63 function rebuildRecentChangesTablePass2()
65 $dbw =& wfGetDB( DB_MASTER );
66 extract( $dbw->tableNames( 'recentchanges', 'cur', 'old' ) );
68 $ns = $id = $count = 0;
71 print( "Updating links...\n" );
73 # Fill in the rc_last_oldid field, which points to the previous edit
75 $sql = "SELECT rc_cur_id,rc_this_oldid,rc_timestamp FROM $recentchanges " .
76 "ORDER BY rc_cur_id,rc_timestamp";
77 $res = $dbw->query( $sql, DB_MASTER );
81 while ( $obj = $dbw->fetchObject( $res ) ) {
83 if( $obj->rc_cur_id != $lastCurId ) {
84 # Switch! Look up the previous last edit, if any
85 $lastCurId = IntVal( $obj->rc_cur_id );
86 $emit = wfInvertTimestamp( $obj->rc_timestamp );
87 $sql2 = "SELECT old_id FROM $old,$cur " .
88 "WHERE old_namespace=cur_namespace AND old_title=cur_title AND cur_id={$lastCurId} ".
89 "AND $old.inverse_timestamp>'{$emit}' ORDER BY $old.inverse_timestamp LIMIT 1";
90 $res2 = $dbw->query( $sql2 );
91 if( $row = $dbw->fetchObject( $res2 ) ) {
92 $lastOldId = IntVal( $row->old_id );
98 $dbw->freeResult( $res2 );
100 if( $lastCurId == 0 ) {
101 print "Uhhh, something wrong? No curid\n";
103 $sql3 = "UPDATE $recentchanges SET rc_last_oldid=$lastOldId,rc_new=$new,rc_type=$new " .
104 "WHERE rc_cur_id={$lastCurId} AND rc_this_oldid={$obj->rc_this_oldid}";
105 $dbw->query( $sql3 );
106 $lastOldId = IntVal( $obj->rc_this_oldid );
109 $dbw->freeResult( $res );