DependencyWrapper Class Reference

This class stores an arbitrary value along with its dependencies. More...

Collaboration diagram for DependencyWrapper:

Public Member Functions
	__construct ($value=false, $deps=[])
	Create an instance. More...
	getValue ()
	Get the user-defined value. More...
	initialiseDeps ()
	Initialise dependency values in preparation for storing. More...
	isExpired ()
	Returns true if any of the dependencies have expired. More...
	storeToCache ($cache, $key, $expiry=0)
	Store the wrapper to a cache. More...

Static Public Member Functions
static	getValueFromCache ($cache, $key, $expiry=0, $callback=false, $callbackParams=[], $deps=[])
	Attempt to get a value from the cache. More...

Private Attributes
CacheDependency[]	$deps
	$value

Detailed Description

This class stores an arbitrary value along with its dependencies.

Users should typically only use DependencyWrapper::getValueFromCache(), rather than instantiating one of these objects directly.

Definition at line 31 of file CacheDependency.php.

Constructor & Destructor Documentation

DependencyWrapper::__construct	(		$value = false,
			$deps = []
	)

Create an instance.

Parameters

mixed	$value	The user-supplied value
	CacheDependency|CacheDependency[]	$deps A dependency or dependency array. All dependencies must be objects implementing CacheDependency.

Definition at line 42 of file CacheDependency.php.

References $deps, and $value.

Member Function Documentation

DependencyWrapper::getValue

(

)

Get the user-defined value.

Returns

bool|mixed

Definition at line 81 of file CacheDependency.php.

References $value.

static DependencyWrapper::getValueFromCache (   $cache,   $key,   $expiry = 0,   $callback = false,   $callbackParams = [],   $deps = []  )

static

Attempt to get a value from the cache.

If the value is expired or missing, it will be generated with the callback function (if present), and the newly calculated value will be stored to the cache in a wrapper.

Parameters

BagOStuff	$cache	A cache object
string	$key	The cache key
int	$expiry	The expiry timestamp or interval in seconds
bool | callable	$callback	The callback for generating the value, or false
array	$callbackParams	The function parameters for the callback
array	$deps	The dependencies to store on a cache miss. Note: these are not the dependencies used on a cache hit! Cache hits use the stored dependency array.

Returns

mixed The value, or null if it was not present in the cache and no callback was defined.

Definition at line 114 of file CacheDependency.php.

References $cache, $value, and isExpired().

DependencyWrapper::initialiseDeps

(

)

Initialise dependency values in preparation for storing.

This must be called before serialization.

Definition at line 71 of file CacheDependency.php.

References as.

Referenced by storeToCache().

DependencyWrapper::isExpired

(

)

Returns true if any of the dependencies have expired.

Returns

bool

Definition at line 57 of file CacheDependency.php.

References as.

Referenced by getValueFromCache().

DependencyWrapper::storeToCache	(		$cache,
			$key,
			$expiry = 0
	)

Store the wrapper to a cache.

Parameters

BagOStuff	$cache
string	$key
int	$expiry

Definition at line 92 of file CacheDependency.php.

References $cache, and initialiseDeps().

Member Data Documentation

CacheDependency [] DependencyWrapper::$deps

private

Definition at line 34 of file CacheDependency.php.

Referenced by __construct().

DependencyWrapper::$value

private

Definition at line 32 of file CacheDependency.php.

Referenced by __construct(), getValue(), and getValueFromCache().

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

• includes/cache/CacheDependency.php