DataUpdate Class Reference

Abstract base class for update jobs that do something with some secondary data extracted from article. More...

Inheritance diagram for DataUpdate:

Collaboration diagram for DataUpdate:

Public Member Functions
	__construct ()
	Constructor. More...
	beginTransaction ()
	Begin an appropriate transaction, if any. More...
	commitTransaction ()
	Commit the transaction started via beginTransaction, if any. More...
	rollbackTransaction ()
	Abort / roll back the transaction started via beginTransaction, if any. More...
Public Member Functions inherited from DeferrableUpdate
	doUpdate ()
	Perform the actual work. More...

Static Public Member Functions
static	runUpdates ( $updates)
	Convenience method, calls doUpdate() on every DataUpdate in the array. More...

Detailed Description

Abstract base class for update jobs that do something with some secondary data extracted from article.

Note

: subclasses should NOT start or commit transactions in their doUpdate() method, a transaction will automatically be wrapped around the update. If need be, subclasses can override the beginTransaction() and commitTransaction() methods.

Definition at line 32 of file DataUpdate.php.

Constructor & Destructor Documentation

__construct()

DataUpdate::__construct

(

)

Constructor.

Definition at line 36 of file DataUpdate.php.

Member Function Documentation

beginTransaction()

DataUpdate::beginTransaction

(

)

Begin an appropriate transaction, if any.

This default implementation does nothing.

Reimplemented in SqlDataUpdate.

Definition at line 44 of file DataUpdate.php.

commitTransaction()

DataUpdate::commitTransaction

(

)

Commit the transaction started via beginTransaction, if any.

This default implementation does nothing.

Reimplemented in SqlDataUpdate.

Definition at line 52 of file DataUpdate.php.

rollbackTransaction()

DataUpdate::rollbackTransaction

(

)

Abort / roll back the transaction started via beginTransaction, if any.

This default implementation does nothing.

Definition at line 60 of file DataUpdate.php.

runUpdates()

static DataUpdate::runUpdates (   $updates )

static

Convenience method, calls doUpdate() on every DataUpdate in the array.

This methods supports transactions logic by first calling beginTransaction() on all updates in the array, then calling doUpdate() on each, and, if all goes well, then calling commitTransaction() on each update. If an error occurs, rollbackTransaction() will be called on any update object that had beginTransaction() called but not yet commitTransaction().

This allows for limited transactional logic across multiple backends for storing secondary data.

Parameters

array

$updates

a list of DataUpdate instances

Exceptions

Exception|null

Definition at line 79 of file DataUpdate.php.

References array(), as, and wfDebug().

Referenced by WikiPage\doDeleteUpdates(), WikiPage\doEditUpdates(), ApiPurge\execute(), RefreshLinks\fixLinksFromArticle(), and RefreshLinksJob\runForTitle().

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

• includes/deferred/DataUpdate.php