00001 <?php
00010 require_once( 'purgeOldText.inc' );
00011
00012 function DeleteOldRevisions( $delete = false, $args = array() ) {
00013
00014 # Data should come off the master, wrapped in a transaction
00015 $dbw = wfGetDB( DB_MASTER );
00016 $dbw->begin();
00017
00018 $tbl_pag = $dbw->tableName( 'page' );
00019 $tbl_rev = $dbw->tableName( 'revision' );
00020
00021 $pageIdClause = '';
00022 $revPageClause = '';
00023
00024 # If a list of page_ids was provided, limit results to that set of page_ids
00025 if ( sizeof( $args ) > 0 ) {
00026 $pageIdList = implode( ',', $args );
00027 $pageIdClause = " WHERE page_id IN ({$pageIdList})";
00028 $revPageClause = " AND rev_page IN ({$pageIdList})";
00029 echo( "Limiting to {$tbl_pag}.page_id IN ({$pageIdList})\n" );
00030 }
00031
00032 # Get "active" revisions from the page table
00033 echo( "Searching for active revisions..." );
00034 $res = $dbw->query( "SELECT page_latest FROM $tbl_pag{$pageIdClause}" );
00035 while( $row = $dbw->fetchObject( $res ) ) {
00036 $cur[] = $row->page_latest;
00037 }
00038 echo( "done.\n" );
00039
00040 # Get all revisions that aren't in this set
00041 echo( "Searching for inactive revisions..." );
00042 $set = implode( ', ', $cur );
00043 $res = $dbw->query( "SELECT rev_id FROM $tbl_rev WHERE rev_id NOT IN ( $set ){$revPageClause}" );
00044 while( $row = $dbw->fetchObject( $res ) ) {
00045 $old[] = $row->rev_id;
00046 }
00047 echo( "done.\n" );
00048
00049 # Inform the user of what we're going to do
00050 $count = count( $old );
00051 echo( "$count old revisions found.\n" );
00052
00053 # Delete as appropriate
00054 if( $delete && $count ) {
00055 echo( "Deleting..." );
00056 $set = implode( ', ', $old );
00057 $dbw->query( "DELETE FROM $tbl_rev WHERE rev_id IN ( $set )" );
00058 echo( "done.\n" );
00059 }
00060
00061 # This bit's done
00062 # Purge redundant text records
00063 $dbw->commit();
00064 if( $delete ) {
00065 PurgeRedundantText( true );
00066 }
00067
00068 }