A BagOStuff object with no objects in it. More...

Inheritance diagram for EmptyBagOStuff:

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Collaboration diagram for EmptyBagOStuff:

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Public Member Functions
	add ( $key, $value, $exp=0)

	delete ( $key)
	Delete an item. More...

	merge ( $key, callable $callback, $exptime=0, $attempts=10, $flags=0)
	Merge changes into the existing cache value (possibly creating a new one) More...

	set ( $key, $value, $exp=0, $flags=0)
	Set an item. More...

Public Member Functions inherited from BagOStuff
	__construct (array $params=[])
	$params include: More...

	addBusyCallback (callable $workCallback)
	Let a callback be run to avoid wasting time on special blocking calls. More...

	changeTTL ( $key, $expiry=0)
	Reset the TTL on a key if it exists. More...

	clearLastError ()
	Clear the "last error" registry. More...

	decr ( $key, $value=1)
	Decrease stored value of $key by $value while preserving its TTL. More...

	deleteObjectsExpiringBefore ( $date, $progressCallback=false)
	Delete all objects expiring before a certain date. More...

	get ( $key, $flags=0, $oldFlags=null)
	Get an item with the given key. More...

	getLastError ()
	Get the "last error" registered; clearLastError() should be called manually. More...

	getMulti (array $keys, $flags=0)
	Get an associative array containing the item for each of the keys that have items. More...

	getQoS ( $flag)

	getScopedLock ( $key, $timeout=6, $expiry=30, $rclass='')
	Get a lightweight exclusive self-unlocking lock. More...

	getWithSetCallback ( $key, $ttl, $callback, $flags=0)
	Get an item with the given key, regenerating and setting it if not found. More...

	incr ( $key, $value=1)
	Increase stored value of $key by $value while preserving its TTL. More...

	incrWithInit ( $key, $ttl, $value=1, $init=1)
	Increase stored value of $key by $value while preserving its TTL. More...

	lock ( $key, $timeout=6, $expiry=6, $rclass='')
	Acquire an advisory lock on a key string. More...

	makeGlobalKey ()
	Make a global cache key. More...

	makeKey ()
	Make a cache key, scoped to this instance's keyspace. More...

	makeKeyInternal ( $keyspace, $args)
	Construct a cache key. More...

	modifySimpleRelayEvent (array $event)
	Modify a cache update operation array for EventRelayer::notify() More...

	setDebug ( $bool)

	setLogger (LoggerInterface $logger)

	setMulti (array $data, $exptime=0)
	Batch insertion. More...

	unlock ( $key)
	Release an advisory lock on a key string. More...

Protected Member Functions
	doGet ( $key, $flags=0)

Protected Member Functions inherited from BagOStuff
	cas ( $casToken, $key, $value, $exptime=0)
	Check and set an item. More...

	convertExpiry ( $exptime)
	Convert an optionally relative time to an absolute time. More...

	convertToRelative ( $exptime)
	Convert an optionally absolute expiry time to a relative time. More...

	debug ( $text)

	getWithToken ( $key, &$casToken, $flags=0)

	isInteger ( $value)
	Check if a value is an integer. More...

	mergeFlagMaps (array $bags)
	Merge the flag maps of one or more BagOStuff objects into a "lowest common denominator" map. More...

	mergeViaCas ( $key, $callback, $exptime=0, $attempts=10)

	mergeViaLock ( $key, $callback, $exptime=0, $attempts=10, $flags=0)

	setLastError ( $err)
	Set the "last error" registry. More...

Additional Inherited Members
Public Attributes inherited from BagOStuff
const	ERR_NO_RESPONSE = 1

const	ERR_NONE = 0
	Possible values for getLastError() More...

const	ERR_UNEXPECTED = 3

const	ERR_UNREACHABLE = 2

const	READ_LATEST = 1
	Bitfield constants for get()/getMulti() More...

const	READ_VERIFIED = 2

const	WRITE_CACHE_ONLY = 2

const	WRITE_SYNC = 1
	Bitfield constants for set()/merge() More...

Public Attributes inherited from IExpiringStore
const	ATTR_EMULATION = 1

const	ATTR_SYNCWRITES = 2

const	QOS_EMULATION_SQL = 1

const	QOS_SYNCWRITES_BE = 2

const	QOS_SYNCWRITES_NONE = 1

const	QOS_SYNCWRITES_QC = 3

const	QOS_SYNCWRITES_SS = 4

const	QOS_UNKNOWN = INF

const	TTL_DAY = 86400

const	TTL_HOUR = 3600

const	TTL_INDEFINITE = 0

const	TTL_MINUTE = 60

const	TTL_MONTH = 2592000

const	TTL_PROC_LONG = 30

const	TTL_PROC_SHORT = 3

const	TTL_WEEK = 604800

const	TTL_YEAR = 31536000

Protected Attributes inherited from BagOStuff
callback null	$asyncHandler

int[]	$attrMap = []
	Map of (ATTR_* class constant => QOS_* class constant) More...

callable[]	$busyCallbacks = []

string	$keyspace = 'local'

int	$lastError = self::ERR_NONE
	ERR_* class constant. More...

array[]	$locks = []
	Lock tracking. More...

LoggerInterface	$logger

int	$syncTimeout
	Seconds. More...

Detailed Description

A BagOStuff object with no objects in it.

Used to provide a no-op object to calling code.

Definition at line 29 of file EmptyBagOStuff.php.

Member Function Documentation

◆ add()

EmptyBagOStuff::add	(	$key,
		$value,
		$exptime = `0`
	)

Parameters

string	$key
mixed	$value
int	$exptime

Returns: bool Success

Reimplemented from BagOStuff.

Definition at line 34 of file EmptyBagOStuff.php.

◆ delete()

EmptyBagOStuff::delete ( $key )

Delete an item.

Parameters

string $key

Returns: bool True if the item was deleted or not found, false on failure

Reimplemented from BagOStuff.

Definition at line 42 of file EmptyBagOStuff.php.

◆ doGet()

EmptyBagOStuff::doGet	(	$key,
		$flags = `0`
	)

protected

Parameters

string	$key
int	$flags	Bitfield of BagOStuff::READ_* constants [optional]

Returns: mixed Returns false on failure and if the item does not exist

Reimplemented from BagOStuff.

Definition at line 30 of file EmptyBagOStuff.php.

◆ merge()

EmptyBagOStuff::merge	(		$key,
		callable	$callback,
			$exptime = `0`,
			$attempts = `10`,
			$flags = `0`
	)

Merge changes into the existing cache value (possibly creating a new one)

The callback function returns the new value given the current value (which will be false if not present), and takes the arguments: (this BagOStuff, cache key, current value, TTL). The TTL parameter is reference set to $exptime. It can be overriden in the callback.

Parameters

string	$key
callable	$callback	Callback method to be executed
int	$exptime	Either an interval in seconds or a unix timestamp for expiry
int	$attempts	The amount of times to attempt a merge in case of failure
int	$flags	Bitfield of BagOStuff::WRITE_* constants

Returns: bool Success

Exceptions

InvalidArgumentException

Reimplemented from BagOStuff.

Definition at line 46 of file EmptyBagOStuff.php.

◆ set()

EmptyBagOStuff::set	(	$key,
		$value,
		$exptime = `0`,
		$flags = `0`
	)

Set an item.

Parameters

string	$key
mixed	$value
int	$exptime	Either an interval in seconds or a unix timestamp for expiry
int	$flags	Bitfield of BagOStuff::WRITE_* constants

Returns: bool Success

Reimplemented from BagOStuff.

Definition at line 38 of file EmptyBagOStuff.php.

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

includes/libs/objectcache/EmptyBagOStuff.php

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ add()

◆ delete()

◆ doGet()

◆ merge()

◆ set()