MediaWiki  1.33.0
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1 <?php
26 require_once __DIR__ . '/Maintenance.php';
33 class RenameDbPrefix extends Maintenance {
34  public function __construct() {
35  parent::__construct();
36  $this->addOption( "old", "Old db prefix [0 for none]", true, true );
37  $this->addOption( "new", "New db prefix [0 for none]", true, true );
38  }
40  public function getDbType() {
41  return Maintenance::DB_ADMIN;
42  }
44  public function execute() {
45  global $wgDBname;
47  // Allow for no old prefix
48  if ( $this->getOption( 'old', 0 ) === '0' ) {
49  $old = '';
50  } else {
51  // Use nice safe, sane, prefixes
52  preg_match( '/^[a-zA-Z]+_$/', $this->getOption( 'old' ), $m );
53  $old = $m[0] ?? false;
54  }
55  // Allow for no new prefix
56  if ( $this->getOption( 'new', 0 ) === '0' ) {
57  $new = '';
58  } else {
59  // Use nice safe, sane, prefixes
60  preg_match( '/^[a-zA-Z]+_$/', $this->getOption( 'new' ), $m );
61  $new = $m[0] ?? false;
62  }
64  if ( $old === false || $new === false ) {
65  $this->fatalError( "Invalid prefix!" );
66  }
67  if ( $old === $new ) {
68  $this->output( "Same prefix. Nothing to rename!\n", true );
69  }
71  $this->output( "Renaming DB prefix for tables of $wgDBname from '$old' to '$new'\n" );
72  $count = 0;
74  $dbw = $this->getDB( DB_MASTER );
75  $res = $dbw->query( "SHOW TABLES " . $dbw->buildLike( $old, $dbw->anyString() ) );
76  foreach ( $res as $row ) {
77  // XXX: odd syntax. MySQL outputs an oddly cased "Tables of X"
78  // sort of message. Best not to try $row->x stuff...
79  $fields = get_object_vars( $row );
80  // Silly for loop over one field...
81  foreach ( $fields as $table ) {
82  // $old should be regexp safe ([a-zA-Z_])
83  $newTable = preg_replace( '/^' . $old . '/', $new, $table );
84  $this->output( "Renaming table $table to $newTable\n" );
85  $oldTableEnc = $dbw->addIdentifierQuotes( $table );
86  $newTableEnc = $dbw->addIdentifierQuotes( $newTable );
87  $dbw->query( "RENAME TABLE $oldTableEnc TO $newTableEnc" );
88  }
89  $count++;
90  }
91  $this->output( "Done! [$count tables]\n" );
92  }
93 }
96 require_once RUN_MAINTENANCE_IF_MAIN;
Do the actual work.
Definition: renameDbPrefix.php:44
Definition: renameDbPrefix.php:95
controlled by the following MediaWiki still creates a BagOStuff but calls it to it are no ops If the cache daemon can t be it should also disable itself fairly $wgDBname
Definition: memcached.txt:93
fatalError( $msg, $exitCode=1)
Output a message and terminate the current script.
Definition: Maintenance.php:485
Default constructor.
Definition: renameDbPrefix.php:34
Definition: maintenance.txt:50
Definition: database.txt:21
Abstract maintenance class for quickly writing and churning out maintenance scripts with minimal effo...
Definition: maintenance.txt:39
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:35
addOption( $name, $description, $required=false, $withArg=false, $shortName=false, $multiOccurrence=false)
Add a parameter to the script.
Definition: Maintenance.php:248
Does the script need different DB access? By default, we give Maintenance scripts normal rights to th...
Definition: renameDbPrefix.php:40
Definition: defines.php:26
const DB_ADMIN
Definition: Maintenance.php:79
Maintenance script that changes the prefix of database tables.
Definition: renameDbPrefix.php:33
getOption( $name, $default=null)
Get an option, or return the default.
Definition: Maintenance.php:283
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:9
getDB( $db, $groups=[], $wiki=false)
Returns a database to be used by current maintenance script.
Definition: Maintenance.php:1373
output( $out, $channel=null)
Throw some output to the user.
Definition: Maintenance.php:434
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:52