MediaWiki REL1_30
deleteOrphanedRevisions.php
Go to the documentation of this file.
1<?php
27require_once __DIR__ . '/Maintenance.php';
28
30
37 public function __construct() {
38 parent::__construct();
39 $this->addDescription(
40 'Maintenance script to delete revisions which refer to a nonexisting page' );
41 $this->addOption( 'report', 'Prints out a count of affected revisions but doesn\'t delete them' );
42 }
43
44 public function execute() {
45 $this->output( "Delete Orphaned Revisions\n" );
46
47 $report = $this->hasOption( 'report' );
48
49 $dbw = $this->getDB( DB_MASTER );
50 $this->beginTransaction( $dbw, __METHOD__ );
51 list( $page, $revision ) = $dbw->tableNamesN( 'page', 'revision' );
52
53 # Find all the orphaned revisions
54 $this->output( "Checking for orphaned revisions..." );
55 $sql = "SELECT rev_id FROM {$revision} LEFT JOIN {$page} ON rev_page = page_id "
56 . "WHERE page_namespace IS NULL";
57 $res = $dbw->query( $sql, 'deleteOrphanedRevisions' );
58
59 # Stash 'em all up for deletion (if needed)
60 $revisions = [];
61 foreach ( $res as $row ) {
62 $revisions[] = $row->rev_id;
63 }
64 $count = count( $revisions );
65 $this->output( "found {$count}.\n" );
66
67 # Nothing to do?
68 if ( $report || $count == 0 ) {
69 $this->commitTransaction( $dbw, __METHOD__ );
70 exit( 0 );
71 }
72
73 # Delete each revision
74 $this->output( "Deleting..." );
75 $this->deleteRevs( $revisions, $dbw );
76 $this->output( "done.\n" );
77
78 # Close the transaction and call the script to purge unused text records
79 $this->commitTransaction( $dbw, __METHOD__ );
80 $this->purgeRedundantText( true );
81 }
82
90 private function deleteRevs( $id, &$dbw ) {
91 if ( !is_array( $id ) ) {
92 $id = [ $id ];
93 }
94 $dbw->delete( 'revision', [ 'rev_id' => $id ], __METHOD__ );
95
96 // Delete from ip_changes should a record exist.
97 $dbw->delete( 'ip_changes', [ 'ipc_rev_id' => $id ], __METHOD__ );
98 }
99}
100
101$maintClass = "DeleteOrphanedRevisions";
102require_once RUN_MAINTENANCE_IF_MAIN;
Maintenance script that deletes revisions which refer to a nonexisting page.
deleteRevs( $id, &$dbw)
Delete one or more revisions from the database Do this inside a transaction.
__construct()
Default constructor.
Abstract maintenance class for quickly writing and churning out maintenance scripts with minimal effo...
beginTransaction(IDatabase $dbw, $fname)
Begin a transcation on a DB.
commitTransaction(IDatabase $dbw, $fname)
Commit the transcation on a DB handle and wait for replica DBs to catch up.
getDB( $db, $groups=[], $wiki=false)
Returns a database to be used by current maintenance script.
hasOption( $name)
Checks to see if a particular param exists.
purgeRedundantText( $delete=true)
Support function for cleaning up redundant text records.
addDescription( $text)
Set the description text.
addOption( $name, $description, $required=false, $withArg=false, $shortName=false, $multiOccurrence=false)
Add a parameter to the script.
$res
Definition database.txt:21
deferred txt A few of the database updates required by various functions here can be deferred until after the result page is displayed to the user For updating the view updating the linked to tables after a etc PHP does not yet have any way to tell the server to actually return and disconnect while still running these but it might have such a feature in the future We handle these by creating a deferred update object and putting those objects on a global list
Definition deferred.txt:11
design txt This is a brief overview of the new design More thorough and up to date information is available on the documentation wiki at etc Handles the details of getting and saving to the user table of the and dealing with sessions and cookies OutputPage Encapsulates the entire HTML page that will be sent in response to any server request It is used by calling its functions to add in any and then calling output() to send it all. It could be easily changed to send incrementally if that becomes useful
Basic database interface for live and lazy-loaded relation database handles.
Definition IDatabase.php:40
require_once RUN_MAINTENANCE_IF_MAIN
const DB_MASTER
Definition defines.php:26