MediaWiki  1.28.1
ListDuplicatedFilesPage Class Reference

Special:ListDuplicatedFiles Lists all files where the current version is a duplicate of the current version of some other file. More...

Inheritance diagram for ListDuplicatedFilesPage:
Collaboration diagram for ListDuplicatedFilesPage:

Public Member Functions

 __construct ($name= 'ListDuplicatedFiles')
 
 formatResult ($skin, $result)
 
 getQueryInfo ()
 Get all the duplicates by grouping on sha1s. More...
 
 isExpensive ()
 
 isSyndicated ()
 
 preprocessResults ($db, $res)
 Pre-fill the link cache. More...
 
- Public Member Functions inherited from QueryPage
 closeList ()
 
 doFeed ($class= '', $limit=50)
 Similar to above, but packaging in a syndicated feed instead of a web page. More...
 
 doQuery ($offset=false, $limit=false)
 Somewhat deprecated, you probably want to be using execute() More...
 
 execute ($par)
 This is the actual workhorse. More...
 
 feedDesc ()
 
 feedItemAuthor ($row)
 
 feedItemDesc ($row)
 
 feedResult ($row)
 Override for custom handling. More...
 
 feedTitle ()
 
 feedUrl ()
 
 fetchFromCache ($limit, $offset=false)
 Fetch the query results from the query cache. More...
 
 formatResult ($skin, $result)
 Formats the results of the query for display. More...
 
 getCachedTimestamp ()
 
 getOrderFields ()
 Subclasses return an array of fields to order by here. More...
 
 getPageHeader ()
 The content returned by this function will be output before any result. More...
 
 getQueryInfo ()
 Subclasses return an SQL query here, formatted as an array with the following keys: tables => Table(s) for passing to Database::select() fields => Field(s) for passing to Database::select(), may be * conds => WHERE conditions options => options join_conds => JOIN conditions. More...
 
 getRecacheDB ()
 Get a DB connection to be used for slow recache queries. More...
 
 getSQL ()
 For back-compat, subclasses may return a raw SQL query here, as a string. More...
 
 isCacheable ()
 Is the output of this query cacheable? Non-cacheable expensive pages will be disabled in miser mode and will not have their results written to the querycache table. More...
 
 isCached ()
 Whether or not the output of the page in question is retrieved from the database cache. More...
 
 isExpensive ()
 Is this query expensive (for some definition of expensive)? Then we don't let it run in miser mode. More...
 
 isSyndicated ()
 Sometime we don't want to build rss / atom feeds. More...
 
 linkParameters ()
 If using extra form wheely-dealies, return a set of parameters here as an associative array. More...
 
 openList ($offset)
 
 preprocessResults ($db, $res)
 Do any necessary preprocessing of the result object. More...
 
 reallyDoQuery ($limit, $offset=false)
 Run the query and return the result. More...
 
 recache ($limit, $ignoreErrors=true)
 Clear the cache and save new results. More...
 
 setListoutput ($bool)
 A mutator for $this->listoutput;. More...
 
 sortDescending ()
 Override to sort by increasing values. More...
 
 tryLastResult ()
 Some special pages (for example SpecialListusers used to) might not return the current object formatted, but return the previous one instead. More...
 
 usesTimestamps ()
 Does this query return timestamps rather than integers in its 'value' field? If true, this class will convert 'value' to a UNIX timestamp for caching. More...
 
- Public Member Functions inherited from SpecialPage
 __construct ($name= '', $restriction= '', $listed=true, $function=false, $file= '', $includable=false)
 Default constructor for special pages Derivative classes should call this from their constructor Note that if the user does not have the required level, an error message will be displayed by the default execute() method, without the global function ever being called. More...
 
 addHelpLink ($to, $overrideBaseUrl=false)
 Adds help link with an icon via page indicators. More...
 
 checkPermissions ()
 Checks if userCanExecute, and if not throws a PermissionsError. More...
 
 checkReadOnly ()
 If the wiki is currently in readonly mode, throws a ReadOnlyError. More...
 
 displayRestrictionError ()
 Output an error message telling the user what access level they have to have. More...
 
 doesWrites ()
 Indicates whether this special page may perform database writes. More...
 
 execute ($subPage)
 Default execute method Checks user permissions. More...
 
 getConfig ()
 Shortcut to get main config object. More...
 
 getContext ()
 Gets the context this SpecialPage is executed in. More...
 
 getDescription ()
 Returns the name that goes in the \<h1\> in the special page itself, and also the name that will be listed in Special:Specialpages. More...
 
 getFinalGroupName ()
 Get the group that the special page belongs in on Special:SpecialPage Use this method, instead of getGroupName to allow customization of the group name from the wiki side. More...
 
 getFullTitle ()
 Return the full title, including $par. More...
 
 getLanguage ()
 Shortcut to get user's language. More...
 
 getLinkRenderer ()
 
 getLocalName ()
 Get the localised name of the special page. More...
 
 getName ()
 Get the name of this Special Page. More...
 
 getOutput ()
 Get the OutputPage being used for this instance. More...
 
 getPageTitle ($subpage=false)
 Get a self-referential title object. More...
 
 getRequest ()
 Get the WebRequest being used for this instance. More...
 
 getRestriction ()
 Get the permission that a user must have to execute this page. More...
 
 getSkin ()
 Shortcut to get the skin being used for this instance. More...
 
 getTitle ($subpage=false)
 Get a self-referential title object. More...
 
 getUser ()
 Shortcut to get the User executing this instance. More...
 
 including ($x=null)
 Whether the special page is being evaluated via transclusion. More...
 
 isCached ()
 Is this page cached? Expensive pages are cached or disabled in miser mode. More...
 
 isExpensive ()
 Is this page expensive (for some definition of expensive)? Expensive pages are disabled or cached in miser mode. More...
 
 isIncludable ()
 Whether it's allowed to transclude the special page via {{Special:Foo/params}}. More...
 
 isListed ()
 Whether this special page is listed in Special:SpecialPages. More...
 
 isRestricted ()
 Can be overridden by subclasses with more complicated permissions schemes. More...
 
 listed ($x=null)
 Get or set whether this special page is listed in Special:SpecialPages. More...
 
 maxIncludeCacheTime ()
 How long to cache page when it is being included. More...
 
 msg ()
 Wrapper around wfMessage that sets the current context. More...
 
 outputHeader ($summaryMessageKey= '')
 Outputs a summary message on top of special pages Per default the message key is the canonical name of the special page May be overridden, i.e. More...
 
 prefixSearchSubpages ($search, $limit, $offset)
 Return an array of subpages beginning with $search that this special page will accept. More...
 
 requireLogin ($reasonMsg= 'exception-nologin-text', $titleMsg= 'exception-nologin')
 If the user is not logged in, throws UserNotLoggedIn error. More...
 
 run ($subPage)
 Entry point. More...
 
 setContext ($context)
 Sets the context this SpecialPage is executed in. More...
 
 setHeaders ()
 Sets headers - this should be called from the execute() method of all derived classes! More...
 
 setLinkRenderer (LinkRenderer $linkRenderer)
 
 setListed ($listed)
 Set whether this page is listed in Special:Specialpages, at run-time. More...
 
 userCanExecute (User $user)
 Checks if the given user (identified by an object) can execute this special page (as defined by $mRestriction). More...
 

Protected Member Functions

 getGroupName ()
 
- Protected Member Functions inherited from QueryPage
 getDBLimit ($uiLimit, $uiOffset)
 What is limit to fetch from DB. More...
 
 getLimitOffset ()
 Returns limit and offset, as returned by $this->getRequest()->getLimitOffset(). More...
 
 getMaxResults ()
 Get max number of results we can return in miser mode. More...
 
 outputResults ($out, $skin, $dbr, $res, $num, $offset)
 Format and output report results using the given information plus OutputPage. More...
 
 showEmptyText ()
 Outputs some kind of an informative message (via OutputPage) to let the user know that the query returned nothing and thus there's nothing to show. More...
 
- Protected Member Functions inherited from SpecialPage
 addFeedLinks ($params)
 Adds RSS/atom links. More...
 
 afterExecute ($subPage)
 Gets called after. More...
 
 beforeExecute ($subPage)
 Gets called before. More...
 
 checkLoginSecurityLevel ($level=null)
 Verifies that the user meets the security level, possibly reauthenticating them in the process. More...
 
 getCacheTTL ()
 
 getGroupName ()
 Under which header this special page is listed in Special:SpecialPages See messages 'specialpages-group-*' for valid names This method defaults to group 'other'. More...
 
 getLoginSecurityLevel ()
 Tells if the special page does something security-sensitive and needs extra defense against a stolen account (e.g. More...
 
 getRobotPolicy ()
 Return the robot policy. More...
 
 getSubpagesForPrefixSearch ()
 Return an array of subpages that this special page will accept for prefix searches. More...
 
 prefixSearchString ($search, $limit, $offset)
 Perform a regular substring search for prefixSearchSubpages. More...
 
 useTransactionalTimeLimit ()
 Call wfTransactionalTimeLimit() if this request was POSTed. More...
 

Additional Inherited Members

- Static Public Member Functions inherited from QueryPage
static getPages ()
 Get a list of query page classes and their associated special pages, for periodic updates. More...
 
- Static Public Member Functions inherited from SpecialPage
static getSafeTitleFor ($name, $subpage=false)
 Get a localised Title object for a page name with a possibly unvalidated subpage. More...
 
static getTitleFor ($name, $subpage=false, $fragment= '')
 Get a localised Title object for a specified special page name If you don't need a full Title object, consider using TitleValue through getTitleValueFor() below. More...
 
static getTitleValueFor ($name, $subpage=false, $fragment= '')
 Get a localised TitleValue object for a specified special page name. More...
 
- Static Protected Member Functions inherited from SpecialPage
static prefixSearchArray ($search, $limit, array $subpages, $offset)
 Helper function for implementations of prefixSearchSubpages() that filter the values in memory (as opposed to making a query). More...
 
- Protected Attributes inherited from QueryPage
 $cachedTimestamp = null
 
int $limit = 0
 
bool $listoutput = false
 Whether or not we want plain listoutput rather than an ordered list. More...
 
 $numRows
 The number of rows returned by the query. More...
 
int $offset = 0
 The offset and limit in use, as passed to the query() function. More...
 
 $shownavigation = true
 Whether to show prev/next links. More...
 
- Protected Attributes inherited from SpecialPage
IContextSource $mContext
 Current request context. More...
 
 $mIncludable
 
 $mIncluding
 
 $mName
 
 $mRestriction
 

Detailed Description

Special:ListDuplicatedFiles Lists all files where the current version is a duplicate of the current version of some other file.

Definition at line 32 of file SpecialListDuplicatedFiles.php.

Constructor & Destructor Documentation

ListDuplicatedFilesPage::__construct (   $name = 'ListDuplicatedFiles')

Definition at line 33 of file SpecialListDuplicatedFiles.php.

References $name.

Member Function Documentation

ListDuplicatedFilesPage::formatResult (   $skin,
  $result 
)
Parameters
Skin$skin
object$resultResult row
Returns
string

Definition at line 95 of file SpecialListDuplicatedFiles.php.

References SpecialPage\getTitleFor(), Title\makeTitle(), and SpecialPage\msg().

ListDuplicatedFilesPage::getGroupName ( )
protected

Definition at line 109 of file SpecialListDuplicatedFiles.php.

ListDuplicatedFilesPage::getQueryInfo ( )

Get all the duplicates by grouping on sha1s.

A cheaper (but less useful) version of this query would be to not care how many duplicates a particular file has, and do a self-join on image table. However this version should be no more expensive then Special:MostLinked, which seems to get handled fine with however we are doing cached special pages.

Returns
array

Definition at line 56 of file SpecialListDuplicatedFiles.php.

References NS_FILE.

ListDuplicatedFilesPage::isExpensive ( )

Definition at line 37 of file SpecialListDuplicatedFiles.php.

ListDuplicatedFilesPage::isSyndicated ( )

Definition at line 41 of file SpecialListDuplicatedFiles.php.

ListDuplicatedFilesPage::preprocessResults (   $db,
  $res 
)

Pre-fill the link cache.

Parameters
IDatabase$db
ResultWrapper$res

Definition at line 77 of file SpecialListDuplicatedFiles.php.

References $res, and as.


The documentation for this class was generated from the following file: