MediaWiki  1.23.14
alterSharedConstraints.php
Go to the documentation of this file.
1 <?php
30 require_once __DIR__ . '/../Maintenance.php';
31 
33  public function __construct() {
34  parent::__construct();
35  $this->mDescription = "Alter foreign key to reference master tables in shared database setup.";
36  }
37 
38  public function getDbType() {
39  return Maintenance::DB_ADMIN;
40  }
41 
42  public function execute() {
43  global $wgSharedDB, $wgSharedTables, $wgSharedPrefix, $wgDBprefix;
44 
45  if ( $wgSharedDB == null ) {
46  $this->output( "Database sharing is not enabled\n" );
47  return;
48  }
49 
50  $dbw = wfGetDB( DB_MASTER );
51  foreach ( $wgSharedTables as $table ) {
52  $stable = $dbw->tableNameInternal( $table );
53  if ( $wgSharedPrefix != null ) {
54  $ltable = preg_replace( "/^$wgSharedPrefix(.*)/i", "$wgDBprefix\\1", $stable );
55  } else {
56  $ltable = "{$wgDBprefix}{$stable}";
57  }
58 
59  $result = $dbw->query( "SELECT uc.constraint_name, uc.table_name, ucc.column_name, uccpk.table_name pk_table_name, uccpk.column_name pk_column_name, uc.delete_rule, uc.deferrable, uc.deferred
60  FROM user_constraints uc, user_cons_columns ucc, user_cons_columns uccpk
61  WHERE uc.constraint_type = 'R'
62  AND ucc.constraint_name = uc.constraint_name
63  AND uccpk.constraint_name = uc.r_constraint_name
64  AND uccpk.table_name = '$ltable'" );
65  while ( ( $row = $result->fetchRow() ) !== false ) {
66 
67  $this->output( "Altering {$row['constraint_name']} ..." );
68 
69  try {
70  $dbw->query( "ALTER TABLE {$row['table_name']} DROP CONSTRAINT {$wgDBprefix}{$row['constraint_name']}" );
71  } catch ( DBQueryError $exdb ) {
72  if ( $exdb->errno != 2443 ) {
73  throw $exdb;
74  }
75  }
76 
77  $deleteRule = $row['delete_rule'] == 'NO ACTION' ? '' : "ON DELETE {$row['delete_rule']}";
78  $dbw->query( "ALTER TABLE {$row['table_name']} ADD CONSTRAINT {$wgDBprefix}{$row['constraint_name']}
79  FOREIGN KEY ({$row['column_name']})
80  REFERENCES {$wgSharedDB}.$stable({$row['pk_column_name']})
81  {$deleteRule} {$row['deferrable']} INITIALLY {$row['deferred']}" );
82 
83  $this->output( "DONE\n" );
84  }
85  }
86  }
87 
88 }
89 
90 $maintClass = "AlterSharedConstraints";
91 require_once RUN_MAINTENANCE_IF_MAIN;
$result
The index of the header message $result[1]=The index of the body text message $result[2 through n]=Parameters passed to body text message. Please note the header message cannot receive/use parameters. 'ImportHandleLogItemXMLTag':When parsing a XML tag in a log item. $reader:XMLReader object $logInfo:Array of information Return false to stop further processing of the tag 'ImportHandlePageXMLTag':When parsing a XML tag in a page. $reader:XMLReader object $pageInfo:Array of information Return false to stop further processing of the tag 'ImportHandleRevisionXMLTag':When parsing a XML tag in a page revision. $reader:XMLReader object $pageInfo:Array of page information $revisionInfo:Array of revision information Return false to stop further processing of the tag 'ImportHandleToplevelXMLTag':When parsing a top level XML tag. $reader:XMLReader object Return false to stop further processing of the tag 'ImportHandleUploadXMLTag':When parsing a XML tag in a file upload. $reader:XMLReader object $revisionInfo:Array of information Return false to stop further processing of the tag 'InfoAction':When building information to display on the action=info page. $context:IContextSource object & $pageInfo:Array of information 'InitializeArticleMaybeRedirect':MediaWiki check to see if title is a redirect. $title:Title object for the current page $request:WebRequest $ignoreRedirect:boolean to skip redirect check $target:Title/string of redirect target $article:Article object 'InterwikiLoadPrefix':When resolving if a given prefix is an interwiki or not. Return true without providing an interwiki to continue interwiki search. $prefix:interwiki prefix we are looking for. & $iwData:output array describing the interwiki with keys iw_url, iw_local, iw_trans and optionally iw_api and iw_wikiid. 'InternalParseBeforeSanitize':during Parser 's internalParse method just before the parser removes unwanted/dangerous HTML tags and after nowiki/noinclude/includeonly/onlyinclude and other processings. Ideal for syntax-extensions after template/parser function execution which respect nowiki and HTML-comments. & $parser:Parser object & $text:string containing partially parsed text & $stripState:Parser 's internal StripState object 'InternalParseBeforeLinks':during Parser 's internalParse method before links but after nowiki/noinclude/includeonly/onlyinclude and other processings. & $parser:Parser object & $text:string containing partially parsed text & $stripState:Parser 's internal StripState object 'InvalidateEmailComplete':Called after a user 's email has been invalidated successfully. $user:user(object) whose email is being invalidated 'IRCLineURL':When constructing the URL to use in an IRC notification. Callee may modify $url and $query, URL will be constructed as $url . $query & $url:URL to index.php & $query:Query string $rc:RecentChange object that triggered url generation 'IsFileCacheable':Override the result of Article::isFileCacheable()(if true) $article:article(object) being checked 'IsTrustedProxy':Override the result of wfIsTrustedProxy() $ip:IP being check $result:Change this value to override the result of wfIsTrustedProxy() 'IsUploadAllowedFromUrl':Override the result of UploadFromUrl::isAllowedUrl() $url:URL used to upload from & $allowed:Boolean indicating if uploading is allowed for given URL 'isValidEmailAddr':Override the result of User::isValidEmailAddr(), for instance to return false if the domain name doesn 't match your organization. $addr:The e-mail address entered by the user & $result:Set this and return false to override the internal checks 'isValidPassword':Override the result of User::isValidPassword() $password:The password entered by the user & $result:Set this and return false to override the internal checks $user:User the password is being validated for 'Language::getMessagesFileName':$code:The language code or the language we 're looking for a messages file for & $file:The messages file path, you can override this to change the location. 'LanguageGetNamespaces':Provide custom ordering for namespaces or remove namespaces. Do not use this hook to add namespaces. Use CanonicalNamespaces for that. & $namespaces:Array of namespaces indexed by their numbers 'LanguageGetMagic':DEPRECATED, use $magicWords in a file listed in $wgExtensionMessagesFiles instead. Use this to define synonyms of magic words depending of the language $magicExtensions:associative array of magic words synonyms $lang:language code(string) 'LanguageGetSpecialPageAliases':DEPRECATED, use $specialPageAliases in a file listed in $wgExtensionMessagesFiles instead. Use to define aliases of special pages names depending of the language $specialPageAliases:associative array of magic words synonyms $lang:language code(string) 'LanguageGetTranslatedLanguageNames':Provide translated language names. & $names:array of language code=> language name $code language of the preferred translations 'LanguageLinks':Manipulate a page 's language links. This is called in various places to allow extensions to define the effective language links for a page. $title:The page 's Title. & $links:Associative array mapping language codes to prefixed links of the form "language:title". & $linkFlags:Associative array mapping prefixed links to arrays of flags. Currently unused, but planned to provide support for marking individual language links in the UI, e.g. for featured articles. 'LinkBegin':Used when generating internal and interwiki links in Linker::link(), before processing starts. Return false to skip default processing and return $ret. See documentation for Linker::link() for details on the expected meanings of parameters. $skin:the Skin object $target:the Title that the link is pointing to & $html:the contents that the< a > tag should have(raw HTML) $result
Definition: hooks.txt:1528
DB_MASTER
const DB_MASTER
Definition: Defines.php:56
php
skin txt MediaWiki includes four core it has been set as the default in MediaWiki since the replacing Monobook it had been been the default skin since before being replaced by Vector largely rewritten in while keeping its appearance Several legacy skins were removed in the as the burden of supporting them became too heavy to bear Those in etc for skin dependent CSS etc for skin dependent JavaScript These can also be customised on a per user by etc This feature has led to a wide variety of user styles becoming that gallery is a good place to ending in php
Definition: skin.txt:62
AlterSharedConstraints\execute
execute()
Do the actual work.
Definition: alterSharedConstraints.php:42
wfGetDB
& wfGetDB( $db, $groups=array(), $wiki=false)
Get a Database object.
Definition: GlobalFunctions.php:3714
AlterSharedConstraints\getDbType
getDbType()
Does the script need different DB access? By default, we give Maintenance scripts normal rights to th...
Definition: alterSharedConstraints.php:38
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
DBQueryError
Definition: DatabaseError.php:306
global
when a variable name is used in a it is silently declared as a new masking the global
Definition: design.txt:93
Maintenance\DB_ADMIN
const DB_ADMIN
Definition: Maintenance.php:59
AlterSharedConstraints
When using shared tables that are referenced by foreign keys on local tables you have to change the c...
Definition: alterSharedConstraints.php:32
AlterSharedConstraints\__construct
__construct()
Default constructor.
Definition: alterSharedConstraints.php:33
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:9
$maintClass
$maintClass
Definition: alterSharedConstraints.php:90
Maintenance\output
output( $out, $channel=null)
Throw some output to the user.
Definition: Maintenance.php:314