3 * Support functions for the deleteOldRevisions script
7 * @author Rob Church <robchur@gmail.com>
10 require_once( 'purgeOldText.inc' );
12 function DeleteOldRevisions( $delete = false, $args = array() ) {
14 # Data should come off the master, wrapped in a transaction
15 $dbw = wfGetDB( DB_MASTER );
18 $tbl_pag = $dbw->tableName( 'page' );
19 $tbl_rev = $dbw->tableName( 'revision' );
24 # If a list of page_ids was provided, limit results to that set of page_ids
25 if ( sizeof( $args ) > 0 ) {
26 $pageIdList = implode( ',', $args );
27 $pageIdClause = " WHERE page_id IN ({$pageIdList})";
28 $revPageClause = " AND rev_page IN ({$pageIdList})";
29 echo( "Limiting to {$tbl_pag}.page_id IN ({$pageIdList})\n" );
32 # Get "active" revisions from the page table
33 echo( "Searching for active revisions..." );
34 $res = $dbw->query( "SELECT page_latest FROM $tbl_pag{$pageIdClause}" );
35 while( $row = $dbw->fetchObject( $res ) ) {
36 $cur[] = $row->page_latest;
40 # Get all revisions that aren't in this set
41 echo( "Searching for inactive revisions..." );
42 $set = implode( ', ', $cur );
43 $res = $dbw->query( "SELECT rev_id FROM $tbl_rev WHERE rev_id NOT IN ( $set ){$revPageClause}" );
44 while( $row = $dbw->fetchObject( $res ) ) {
45 $old[] = $row->rev_id;
49 # Inform the user of what we're going to do
50 $count = count( $old );
51 echo( "$count old revisions found.\n" );
53 # Delete as appropriate
54 if( $delete && $count ) {
55 echo( "Deleting..." );
56 $set = implode( ', ', $old );
57 $dbw->query( "DELETE FROM $tbl_rev WHERE rev_id IN ( $set )" );
62 # Purge redundant text records
65 PurgeRedundantText( true );