The Elgg cache base class. More...

Inheritance diagram for Elgg\Cache\BaseCache:

Public Member Functions
	setVariable (string $variable, $value)
	Set a cache variable. More...

	getVariable (string $variable)
	Get variables for this cache. More...

	__get (string $key)
	Class member get overloading, returning key using $this->load defaults. More...

	__set (string $key, $value)
	Class member set overloading, setting a key using $this->save defaults. More...

	__isset (string $key)
	Supporting isset, using $this->load() with default values. More...

	__unset (string $key)
	Supporting unsetting of magic attributes. More...

	save ($key, $data, $expire_after=null)
	Save data in a cache. More...

	load ($key)
	Load data from the cache using a given key. More...

	delete ($key)
	Invalidate a key. More...

	clear ()
	Clear out all the contents of the cache. More...

	invalidate ()
	Invalidate the contents of the cache. More...

	purge ()
	Purge old/stale contents of the cache. More...

	disable ()
	Disable cache Do not write or read from cache. More...

	enable ()
	Enable disabled cache. More...

	populate (array $values, int $expires_after=null)
	Populate cache from an array of key => values. More...

	add (string $key, $data)
	Add a key only if it doesn't already exist. More...

	offsetSet ($offset, $value)
	Assigns a value for the specified key. More...

	offsetGet ($offset)
	Get the value for specified key. More...

	offsetUnset ($offset)
	Unsets a key. More...

	offsetExists ($offset)
	Does key exist. More...

Protected Attributes
bool	$disabled = false

Detailed Description

The Elgg cache base class.

This defines the interface for a cache (wherever that cache is stored).

Definition at line 9 of file BaseCache.php.

Member Function Documentation

Elgg\Cache\BaseCache::__get ( string $key )

Class member get overloading, returning key using $this->load defaults.

Parameters

string $key Name

Returns: mixed

Definition at line 50 of file BaseCache.php.

Elgg\Cache\BaseCache::__isset ( string $key )

Supporting isset, using $this->load() with default values.

Parameters

string $key The name of the attribute or metadata.

Returns: bool

Definition at line 73 of file BaseCache.php.

Elgg\Cache\BaseCache::__set	(	string	$key,
			$value
	)

Class member set overloading, setting a key using $this->save defaults.

Parameters

string	$key	Name
mixed	$value	Value

Returns: void

Definition at line 62 of file BaseCache.php.

Elgg\Cache\BaseCache::__unset ( string $key )

Supporting unsetting of magic attributes.

Parameters

string $key The name of the attribute or metadata.

Returns: void

Definition at line 84 of file BaseCache.php.

Elgg\Cache\BaseCache::add	(	string	$key,
			$data
	)

Add a key only if it doesn't already exist.

Implemented simply here, if you extend this class and your caching engine provides a better way then override this accordingly.

Parameters

string	$key	Name
mixed	$data	Value

Returns: bool

Definition at line 180 of file BaseCache.php.

Elgg\Cache\BaseCache::clear ( )

abstract

Clear out all the contents of the cache.

Returns: bool

Elgg\Cache\BaseCache::delete ( $key )

abstract

Invalidate a key.

Parameters

string $key Name

Returns: bool

Elgg\Cache\BaseCache::disable ( )

Disable cache Do not write or read from cache.

Returns: void

Definition at line 143 of file BaseCache.php.

Elgg\Cache\BaseCache::enable ( )

Enable disabled cache.

Returns: void

Definition at line 151 of file BaseCache.php.

Elgg\Cache\BaseCache::getVariable ( string $variable )

Get variables for this cache.

Parameters

string $variable Name

Returns: mixed The variable or null;

Definition at line 39 of file BaseCache.php.

Elgg\Cache\BaseCache::invalidate ( )

abstract

Invalidate the contents of the cache.

Returns: bool

Elgg\Cache\BaseCache::load ( $key )

abstract

Load data from the cache using a given key.

Parameters

string $key Name

Returns: mixed|null The stored data or null if it's a miss

Elgg\Cache\BaseCache::offsetExists ( $offset )

Does key exist.

See also: ::offsetExists()

Parameters

mixed $offset A key (offset) to check for.

Returns: bool

Definition at line 245 of file BaseCache.php.

Elgg\Cache\BaseCache::offsetGet ( $offset )

Get the value for specified key.

See also: ::offsetGet()

Parameters

mixed $offset The key (offset) to retrieve.

Returns: mixed

Definition at line 215 of file BaseCache.php.

Elgg\Cache\BaseCache::offsetSet	(	$offset,
		$value
	)

Assigns a value for the specified key.

Parameters

mixed	$offset	The key (offset) to assign the value to.
mixed	$value	The value to set.

Returns: void

See also: ::offsetSet()

Definition at line 201 of file BaseCache.php.

Elgg\Cache\BaseCache::offsetUnset ( $offset )

Unsets a key.

See also: ::offsetUnset()

Parameters

mixed $offset The key (offset) to unset.

Returns: void

Definition at line 229 of file BaseCache.php.

Elgg\Cache\BaseCache::populate	(	array	$values,
		int	$expires_after = `null`
	)

Populate cache from an array of key => values.

Parameters

array	$values	Values
int	$expires_after	Expiration duration

Returns: void

Definition at line 163 of file BaseCache.php.

Elgg\Cache\BaseCache::purge ( )

abstract

Purge old/stale contents of the cache.

Returns: bool

Elgg\Cache\BaseCache::save	(	$key,
		$data,
		$expire_after = `null`
	)

abstract

Save data in a cache.

Parameters

string	$key	Name
mixed	$data	Value
int	$expire_after	Number of seconds to expire the cache after

Returns: bool

Elgg\Cache\BaseCache::setVariable	(	string	$variable,
			$value
	)

Set a cache variable.

Parameters

string	$variable	Name
mixed	$value	Value

Returns: void

Definition at line 28 of file BaseCache.php.

Member Data Documentation

bool Elgg\Cache\BaseCache::$disabled = false

protected

Definition at line 18 of file BaseCache.php.

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

engine/classes/Elgg/Cache/BaseCache.php

Public Member Functions

Protected Attributes

Detailed Description

Member Function Documentation

Member Data Documentation