Public Member Functions
	saveAll ($entity_guid, array $values)
	Cache metadata for an entity. More...

	loadAll ($entity_guid)
	Get the metadata for an entity. More...

	markOutOfSync ($entity_guid)
	Declare that there may be fetch-able metadata names in storage that this cache doesn't know about. More...

	isSynchronized ($entity_guid)
	Have all the metadata for this entity been cached? More...

	save ($entity_guid, $name, $value, $allow_multiple=false)
	Cache a piece of metadata. More...

	load ($entity_guid, $name)
	Warning: You should always call isKnown() beforehand to verify that this function's return value should be trusted (otherwise a null return value is ambiguous). More...

	markUnknown ($entity_guid, $name)
	Forget about this metadata entry. More...

	isKnown ($entity_guid, $name)
	If true, load() will return an accurate value for this name. More...

	markEmpty ($entity_guid, $name)
	Declare that metadata under this name is known to be not fetch-able from storage. More...

	clear ($entity_guid)
	Forget about all metadata for an entity. More...

	flush ()
	Clear entire cache and mark all entities as out of sync. More...

	setIgnoreAccess ($ignore)
	Use this value instead of calling elgg_get_ignore_access(). More...

	unsetIgnoreAccess ()
	Tell the cache to call elgg_get_ignore_access() to determing access status. More...

	invalidateByOptions ($action, array $options)
	Invalidate based on options passed to the global *_metadata functions. More...

	populateFromEntities ($guids)
	Populate the cache from a set of entities. More...

	filterMetadataHeavyEntities (array $guids, $limit=1024000)
	Filter out entities whose concatenated metadata values (INTs casted as string) exceed a threshold in characters. More...

Protected Member Functions
	getIgnoreAccess ()
	Get the ignore access value. More...

Protected Attributes
	$values = array()

	$isSynchronized = array()

	$ignoreAccess = null

Detailed Description

Definition at line 11 of file ElggVolatileMetadataCache.php.

Member Function Documentation

ElggVolatileMetadataCache::clear ( $entity_guid )

Forget about all metadata for an entity.

Parameters

int $entity_guid The GUID of the entity

Returns: void

Definition at line 183 of file ElggVolatileMetadataCache.php.

ElggVolatileMetadataCache::filterMetadataHeavyEntities	(	array	$guids,
			$limit = `1024000`
	)

Filter out entities whose concatenated metadata values (INTs casted as string) exceed a threshold in characters.

This could be used to avoid overpopulating the cache if RAM usage becomes an issue.

Parameters

array	$guids	GUIDs of entities to examine
int	$limit	Limit in characters of all metadata (with ints casted to strings)

Returns: array

Definition at line 335 of file ElggVolatileMetadataCache.php.

ElggVolatileMetadataCache::flush ( )

Clear entire cache and mark all entities as out of sync.

Returns: void

Definition at line 193 of file ElggVolatileMetadataCache.php.

ElggVolatileMetadataCache::getIgnoreAccess ( )

protected

Get the ignore access value.

Returns: bool

Definition at line 225 of file ElggVolatileMetadataCache.php.

ElggVolatileMetadataCache::invalidateByOptions	(		$action,
		array	$options
	)

Invalidate based on options passed to the global *_metadata functions.

Parameters

string	$action	Action performed on metadata. "delete", "disable", or "enable"
array	$options	Options passed to elgg_(delete\|disable\|enable)_metadata "guid" if given, invalidation will be limited to this entity "metadata_name" if given, invalidation will be limited to metadata with this name

Returns: void

Definition at line 242 of file ElggVolatileMetadataCache.php.

ElggVolatileMetadataCache::isKnown	(	$entity_guid,
		$name
	)

If true, load() will return an accurate value for this name.

Parameters

int	$entity_guid	The GUID of the entity
string	$name	The metadata name

Returns: bool

Definition at line 157 of file ElggVolatileMetadataCache.php.

ElggVolatileMetadataCache::isSynchronized ( $entity_guid )

Have all the metadata for this entity been cached?

Parameters

int $entity_guid The GUID of the entity

Returns: bool

Definition at line 80 of file ElggVolatileMetadataCache.php.

ElggVolatileMetadataCache::load	(	$entity_guid,
		$name
	)

Warning: You should always call isKnown() beforehand to verify that this function's return value should be trusted (otherwise a null return value is ambiguous).

Parameters

int	$entity_guid	The GUID of the entity
string	$name	The metadata name

Returns: array|string|int|null null = value does not exist

Definition at line 129 of file ElggVolatileMetadataCache.php.

ElggVolatileMetadataCache::loadAll ( $entity_guid )

Get the metadata for an entity.

Parameters

int $entity_guid The GUID of the entity

Returns: array

Definition at line 55 of file ElggVolatileMetadataCache.php.

ElggVolatileMetadataCache::markEmpty	(	$entity_guid,
		$name
	)

Declare that metadata under this name is known to be not fetch-able from storage.

Parameters

int	$entity_guid	The GUID of the entity
string	$name	The metadata name

Returns: array

Definition at line 173 of file ElggVolatileMetadataCache.php.

ElggVolatileMetadataCache::markOutOfSync ( $entity_guid )

Declare that there may be fetch-able metadata names in storage that this cache doesn't know about.

Parameters

int $entity_guid The GUID of the entity

Returns: void

Definition at line 70 of file ElggVolatileMetadataCache.php.

ElggVolatileMetadataCache::markUnknown	(	$entity_guid,
		$name
	)

Forget about this metadata entry.

We don't want to try to guess what the next fetch from storage will return

Parameters

int	$entity_guid	The GUID of the entity
string	$name	The metadata name

Returns: void

Definition at line 145 of file ElggVolatileMetadataCache.php.

ElggVolatileMetadataCache::populateFromEntities ( $guids )

Populate the cache from a set of entities.

Parameters

int | array $guids Array of or single GUIDs

Returns: void

Definition at line 269 of file ElggVolatileMetadataCache.php.

ElggVolatileMetadataCache::save	(	$entity_guid,
		$name,
		$value,
		$allow_multiple = `false`
	)

Cache a piece of metadata.

Parameters

int	$entity_guid	The GUID of the entity
string	$name	The metadata name
array \| int \| string \| null	$value	The metadata value. null means it is known that there is no fetch-able metadata under this name
bool	$allow_multiple	Can the metadata be an array