ElggCache Class Reference

The elgg cache superclass. More...

Inheritance diagram for ElggCache:

Public Member Functions
	__construct ()
	Set the constructor. More...
	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, $data)
	Add a key only if it doesn't already exist. More...
	offsetSet ($key, $value)
	Assigns a value for the specified key. More...
	offsetGet ($key)
	Get the value for specified key. More...
	offsetUnset ($key)
	Unsets a key. More...
	offsetExists ($key)
	Does key exist. More...

Protected Attributes
	$disabled = false

Detailed Description

The elgg cache superclass.

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

Definition at line 6 of file ElggCache.php.

Constructor & Destructor Documentation

ElggCache::__construct

(

)

Set the constructor.

Definition at line 22 of file ElggCache.php.

Member Function Documentation

ElggCache::__get

(

string

$key

)

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

Parameters

string

$key

Name

Returns

mixed

Definition at line 55 of file ElggCache.php.

ElggCache::__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 78 of file ElggCache.php.

ElggCache::__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 67 of file ElggCache.php.

ElggCache::__unset

(

string

$key

)

Supporting unsetting of magic attributes.

Parameters

string

$key

The name of the attribute or metadata.

Returns

void

Definition at line 89 of file ElggCache.php.

ElggCache::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 185 of file ElggCache.php.

ElggCache::clear ( )

abstract

Clear out all the contents of the cache.

Returns

bool

ElggCache::delete (   $key )

abstract

Invalidate a key.

Parameters

string

$key

Name

Returns

bool

ElggCache::disable

(

)

Disable cache Do not write or read from cache.

Returns

void

Definition at line 148 of file ElggCache.php.

ElggCache::enable

(

)

Enable disabled cache.

Returns

void

Definition at line 156 of file ElggCache.php.

ElggCache::getVariable

(

string

$variable

)

Get variables for this cache.

Parameters

string

$variable

Name

Returns

mixed The variable or null;

Definition at line 44 of file ElggCache.php.

ElggCache::invalidate ( )

abstract

Invalidate the contents of the cache.

Returns

bool

ElggCache::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

ElggCache::offsetExists

(

$key

)

Does key exist.

See also

::offsetExists()

Parameters

mixed

$key

A key (offset) to check for.

Returns

bool

Definition at line 250 of file ElggCache.php.

ElggCache::offsetGet

(

$key

)

Get the value for specified key.

See also

::offsetGet()

Parameters

mixed

$key

The key (offset) to retrieve.

Returns

mixed

Definition at line 220 of file ElggCache.php.

ElggCache::offsetSet	(		$key,
			$value
	)

Assigns a value for the specified key.

See also

::offsetSet()

Parameters

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

Returns

void

Definition at line 206 of file ElggCache.php.

ElggCache::offsetUnset

(

$key

)

Unsets a key.

See also

::offsetUnset()

Parameters

mixed

$key

The key (offset) to unset.

Returns

void

Definition at line 234 of file ElggCache.php.

ElggCache::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 168 of file ElggCache.php.

ElggCache::purge ( )

abstract

Purge old/stale contents of the cache.

Returns

bool

ElggCache::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

ElggCache::setVariable	(	string	$variable,
			$value
	)

Set a cache variable.

Parameters

string	$variable	Name
mixed	$value	Value

Returns

void

Definition at line 33 of file ElggCache.php.

Member Data Documentation

ElggCache::$disabled = false

protected

Definition at line 17 of file ElggCache.php.

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

• engine/classes/ElggCache.php