MediaWiki  REL1_33
cleanupAncientTables.php
Go to the documentation of this file.
1 <?php
24 require_once __DIR__ . '/Maintenance.php';
25 
33 
34  public function __construct() {
35  parent::__construct();
36  $this->addDescription( 'Cleanup ancient tables and indexes' );
37  $this->addOption( 'force', 'Actually run this script' );
38  }
39 
40  public function execute() {
41  if ( !$this->hasOption( 'force' ) ) {
42  $this->error( "This maintenance script will remove old columns and indexes.\n"
43  . "It is recommended to backup your database first, and ensure all your data has\n"
44  . "been migrated to newer tables. If you want to continue, run this script again\n"
45  . "with --force.\n"
46  );
47  }
48 
49  $db = $this->getDB( DB_MASTER );
50  $ancientTables = [
51  'blobs', // 1.4
52  'brokenlinks', // 1.4
53  'cur', // 1.4
54  'ip_blocks_old', // Temporary in 1.6
55  'links', // 1.4
56  'linkscc', // 1.4
57  // 'math', // 1.18, but don't want to drop if math extension is enabled...
58  'old', // 1.4
59  'oldwatchlist', // pre 1.1?
60  'trackback', // 1.19
61  'user_rights', // 1.5
62  'validate', // 1.6
63  ];
64 
65  foreach ( $ancientTables as $table ) {
66  if ( $db->tableExists( $table, __METHOD__ ) ) {
67  $this->output( "Dropping table $table..." );
68  $db->dropTable( $table, __METHOD__ );
69  $this->output( "done.\n" );
70  }
71  }
72 
73  $this->output( "Cleaning up text table\n" );
74 
75  $oldIndexes = [
76  'old_namespace',
77  'old_timestamp',
78  'name_title_timestamp',
79  'user_timestamp',
80  'usertext_timestamp',
81  ];
82  foreach ( $oldIndexes as $index ) {
83  if ( $db->indexExists( 'text', $index, __METHOD__ ) ) {
84  $this->output( "Dropping index $index from the text table..." );
85  $db->query( "DROP INDEX " . $db->addIdentifierQuotes( $index )
86  . " ON " . $db->tableName( 'text' ) );
87  $this->output( "done.\n" );
88  }
89  }
90 
91  $oldFields = [
92  'old_namespace',
93  'old_title',
94  'old_comment',
95  'old_user',
96  'old_user_text',
97  'old_timestamp',
98  'old_minor_edit',
99  'inverse_timestamp',
100  ];
101  foreach ( $oldFields as $field ) {
102  if ( $db->fieldExists( 'text', $field, __METHOD__ ) ) {
103  $this->output( "Dropping the $field field from the text table..." );
104  $db->query( "ALTER TABLE " . $db->tableName( 'text' )
105  . " DROP COLUMN " . $db->addIdentifierQuotes( $field ) );
106  $this->output( "done.\n" );
107  }
108  }
109  $this->output( "Done!\n" );
110  }
111 }
112 
114 require_once RUN_MAINTENANCE_IF_MAIN;
$maintClass
$maintClass
Definition: cleanupAncientTables.php:113
Maintenance\addDescription
addDescription( $text)
Set the description text.
Definition: Maintenance.php:329
RUN_MAINTENANCE_IF_MAIN
require_once RUN_MAINTENANCE_IF_MAIN
Definition: maintenance.txt:50
Maintenance
Abstract maintenance class for quickly writing and churning out maintenance scripts with minimal effo...
Definition: maintenance.txt:39
php
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency which acts as the top level factory for services in MediaWiki which can be used to gain access to default instances of various services MediaWikiServices however also allows new services to be defined and default services to be redefined Services are defined or redefined by providing a callback the instantiator that will return a new instance of the service When it will create an instance of MediaWikiServices and populate it with the services defined in the files listed by thereby bootstrapping the DI framework Per $wgServiceWiringFiles lists includes ServiceWiring php
Definition: injection.txt:37
CleanupAncientTables\execute
execute()
Do the actual work.
Definition: cleanupAncientTables.php:40
CleanupAncientTables
Maintenance script to cleans up old database tables, dropping old indexes and fields.
Definition: cleanupAncientTables.php:32
Maintenance\addOption
addOption( $name, $description, $required=false, $withArg=false, $shortName=false, $multiOccurrence=false)
Add a parameter to the script.
Definition: Maintenance.php:248
DB_MASTER
const DB_MASTER
Definition: defines.php:26
CleanupAncientTables\__construct
__construct()
Default constructor.
Definition: cleanupAncientTables.php:34
as
This document is intended to provide useful advice for parties seeking to redistribute MediaWiki to end users It s targeted particularly at maintainers for Linux since it s been observed that distribution packages of MediaWiki often break We ve consistently had to recommend that users seeking support use official tarballs instead of their distribution s and this often solves whatever problem the user is having It would be nice if this could such as
Definition: distributors.txt:22
Maintenance\getDB
getDB( $db, $groups=[], $wiki=false)
Returns a database to be used by current maintenance script.
Definition: Maintenance.php:1373
Maintenance\error
error( $err, $die=0)
Throw an error to the user.
Definition: Maintenance.php:462
Maintenance\output
output( $out, $channel=null)
Throw some output to the user.
Definition: Maintenance.php:434
class
you have access to all of the normal MediaWiki so you can get a DB use the etc For full docs on the Maintenance class
Definition: maintenance.txt:56
Maintenance\hasOption
hasOption( $name)
Checks to see if a particular option exists.
Definition: Maintenance.php:269