84e99dd882c6157617315f006c0867d0654f47c6
4 * Makes the required database updates for rev_parent_id
5 * to be of any use. It can be used for some simple tracking
6 * and to find new page edits by users.
9 define( 'BATCH_SIZE', 100 );
11 require_once 'commandLine.inc';
13 $db =& wfGetDB( DB_MASTER
);
14 if ( !$db->tableExists( 'revision' ) ) {
15 echo "revision table does not exist\n";
19 populate_rev_parent_id( $db );
21 function populate_rev_parent_id( $db ) {
22 echo "Populating rev_parent_id column\n";
23 $start = $db->selectField( 'revision', 'MIN(rev_id)', false, __FUNCTION__
);
24 $end = $db->selectField( 'revision', 'MAX(rev_id)', false, __FUNCTION__
);
26 $blockEnd = $start + BATCH_SIZE
- 1;
27 while( $blockEnd <= $end ) {
28 $cond = "rev_id BETWEEN $blockStart AND $blockEnd";
29 $res = $db->select( 'revision', array('rev_id', 'rev_page'), $cond, __FUNCTION__
);
30 # Go through and update rev_parent_id from these rows.
31 # Assume that the previous revision of the title was
32 # the original previous revision of the title when the
34 while( $row = $db->fetchObject( $res ) ) {
35 $previousID = $db->selectField( 'revision', 'rev_id',
36 array( 'rev_page' => $row->rev_page
, 'rev_id < ' . $row->rev_id
),
38 array( 'ORDER BY' => 'rev_id DESC' ) );
40 $db->update( 'revision',
41 array( 'rev_parent_id' => intval($previousID) ),
42 array( 'rev_page' => $row->rev_page
, 'rev_id' => $row->rev_id
),
45 $blockStart +
= BATCH_SIZE
;
46 $blockEnd +
= BATCH_SIZE
;
49 $logged = $db->insert( 'updatelog',
50 array( 'ul_key' => 'populate rev_parent_id' ),
54 echo "rev_parent_id population complete\n";
57 echo "Could not insert rev_parent_id population row.\n";