Wikibase\Lib\Store\LatestRevisionIdResult Class Reference

Represents result of \Wikibase\Lib\Store\EntityRevisionLookup::getLatestRevisionId method call. More...

Public Member Functions
	onConcreteRevision (callable $handler)
	onRedirect (callable $handler)
	onNonexistentEntity (callable $handler)
	map ()

Static Public Member Functions
static	redirect ( $revisionId, EntityId $redirectsTo)
static	nonexistentEntity ()
static	concreteRevision ( $revisionId)

Private Member Functions
	__construct ( $type)

Static Private Member Functions
static	assertCorrectRevisionId ( $revisionId)

Private Attributes
const	REDIRECT = 'redirect'
	Constants to specify type of the result.
const	NONEXISTENT = 'nonexistent'
const	CONCRETE_REVISION = 'concrete revision'
	$type
	$handlers = []
	$revisionId
	$redirectsTo

Detailed Description

Represents result of \Wikibase\Lib\Store\EntityRevisionLookup::getLatestRevisionId method call.

Is immutable.

The idea behind the design is to force developer to handle all the possible cases.

How to create:

$concreteRevision = LatestRevisionIdResult::concreteRevision( 123 );
$revisionRedirectsToQ7 = LatestRevisionIdResult::redirect( 123, new ItemId( 'Q7' ) );
$entityDoesNotExist = LatestRevisionIdResult::nonexistentEntity();

Example of usage:

$result = $someResult->onRedirect( function ( int $revisionId, EntityId $redirectsTo ) {
        return 'redirect';
    } )
    ->onNonexistentEntity( function () {
        return 'nonexistent';
    } )
    ->onConcreteRevision( function ( int $revisionId ) {
        return 'concrete';
    } )
    ->map();
 
// $result will be one of 'redirect', 'nonexistent' or 'concrete' depending
// on the $someResult type

See also

\Wikibase\Lib\Store\EntityRevisionLookup::getLatestRevisionId

Copyright

GPL-2.0-or-later

Constructor & Destructor Documentation

__construct()

Wikibase\Lib\Store\LatestRevisionIdResult::__construct (   $type )

private

Member Function Documentation

assertCorrectRevisionId()

static Wikibase\Lib\Store\LatestRevisionIdResult::assertCorrectRevisionId (   $revisionId )

staticprivate

Parameters

mixed

$revisionId

Expected positive integer

Exceptions

Exception

concreteRevision()

static Wikibase\Lib\Store\LatestRevisionIdResult::concreteRevision (   $revisionId )

static

Parameters

int

$revisionId

Returns

self

map()

Wikibase\Lib\Store\LatestRevisionIdResult::map

(

)

Returns

mixed Returns value returned by one of the map functions

Exceptions

Exception If target handler throws an exception

Exceptions

LogicException If not all the handlers are specified

nonexistentEntity()

static Wikibase\Lib\Store\LatestRevisionIdResult::nonexistentEntity ( )

static

Returns

self

onConcreteRevision()

Wikibase\Lib\Store\LatestRevisionIdResult::onConcreteRevision

(

callable

$handler

)

Parameters

callable

$handler

Revision id will be given as a first argument

Returns

self

onNonexistentEntity()

Wikibase\Lib\Store\LatestRevisionIdResult::onNonexistentEntity

(

callable

$handler

)

Parameters

callable

$handler

Function with no arguments

Returns

self

onRedirect()

Wikibase\Lib\Store\LatestRevisionIdResult::onRedirect

(

callable

$handler

)

Parameters

callable

$handler

Revision id will be given as a first argument, EntityId to which revision redirects will be second argument

Returns

self

redirect()

static Wikibase\Lib\Store\LatestRevisionIdResult::redirect (   $revisionId, EntityId  $redirectsTo  )

static

Parameters

int	$revisionId
EntityId	$redirectsTo	(could be another redirect)

Returns

self

Member Data Documentation

$handlers

Wikibase\Lib\Store\LatestRevisionIdResult::$handlers = []

private

$redirectsTo

Wikibase\Lib\Store\LatestRevisionIdResult::$redirectsTo

private

$revisionId

Wikibase\Lib\Store\LatestRevisionIdResult::$revisionId

private

$type

Wikibase\Lib\Store\LatestRevisionIdResult::$type

private

CONCRETE_REVISION

const Wikibase\Lib\Store\LatestRevisionIdResult::CONCRETE_REVISION = 'concrete revision'

private

NONEXISTENT

const Wikibase\Lib\Store\LatestRevisionIdResult::NONEXISTENT = 'nonexistent'

private

REDIRECT

const Wikibase\Lib\Store\LatestRevisionIdResult::REDIRECT = 'redirect'

private

Constants to specify type of the result.

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

• lib/includes/Store/LatestRevisionIdResult.php