TYPO3\CMS\Core\Cache\Frontend\FrontendInterface Interface Reference

Inheritance diagram for TYPO3\CMS\Core\Cache\Frontend\FrontendInterface:

Public Member Functions
	getIdentifier ()
	getBackend ()
	set ($entryIdentifier, $data, array $tags=[], $lifetime=null)
	get ($entryIdentifier)
	getByTag ($tag)
	has ($entryIdentifier)
	remove ($entryIdentifier)
	flush ()
	flushByTag ($tag)
	collectGarbage ()
	isValidEntryIdentifier ($identifier)
	isValidTag ($tag)

Public Attributes
const	TAG_CLASS = '%CLASS%'
const	TAG_PACKAGE = '%PACKAGE%'
const	PATTERN_ENTRYIDENTIFIER = '/^[a-zA-Z0-9_%\\-&]{1,250}$/'
const	PATTERN_TAG = '/^[a-zA-Z0-9_%\\-&]{1,250}$/'

Detailed Description

Contract for a Cache (frontend)

Definition at line 21 of file FrontendInterface.php.

Member Function Documentation

collectGarbage()

TYPO3\CMS\Core\Cache\Frontend\FrontendInterface::collectGarbage

(

)

Does garbage collection

Returns

void

Implemented in TYPO3\CMS\Core\Cache\Frontend\AbstractFrontend.

flush()

TYPO3\CMS\Core\Cache\Frontend\FrontendInterface::flush

(

)

Removes all cache entries of this cache.

Returns

void

Implemented in TYPO3\CMS\Core\Cache\Frontend\AbstractFrontend.

flushByTag()

TYPO3\CMS\Core\Cache\Frontend\FrontendInterface::flushByTag

(

$tag

)

Removes all cache entries of this cache which are tagged by the specified tag.

Parameters

string

$tag

The tag the entries must have

Returns

void

Implemented in TYPO3\CMS\Core\Cache\Frontend\AbstractFrontend.

get()

TYPO3\CMS\Core\Cache\Frontend\FrontendInterface::get

(

$entryIdentifier

)

Finds and returns data from the cache.

Parameters

string

$entryIdentifier

Something which identifies the cache entry - depends on concrete cache

Returns

mixed

Implemented in TYPO3\CMS\Core\Cache\Frontend\VariableFrontend, and TYPO3\CMS\Core\Cache\Frontend\StringFrontend.

getBackend()

TYPO3\CMS\Core\Cache\Frontend\FrontendInterface::getBackend

(

)

Returns the backend used by this cache

Returns

The backend used by this cache

Implemented in TYPO3\CMS\Core\Cache\Frontend\AbstractFrontend.

getByTag()

TYPO3\CMS\Core\Cache\Frontend\FrontendInterface::getByTag

(

$tag

)

Finds and returns all cache entries which are tagged by the specified tag.

Parameters

string

$tag

The tag to search for

Returns

array An array with the content of all matching entries. An empty array if no entries matched

Implemented in TYPO3\CMS\Core\Cache\Frontend\VariableFrontend, and TYPO3\CMS\Core\Cache\Frontend\StringFrontend.

getIdentifier()

TYPO3\CMS\Core\Cache\Frontend\FrontendInterface::getIdentifier

(

)

Returns this cache's identifier

Returns

string The identifier for this cache

Implemented in TYPO3\CMS\Core\Cache\Frontend\AbstractFrontend.

has()

TYPO3\CMS\Core\Cache\Frontend\FrontendInterface::has

(

$entryIdentifier

)

Checks if a cache entry with the specified identifier exists.

Parameters

string

$entryIdentifier

An identifier specifying the cache entry

Returns

bool TRUE if such an entry exists, FALSE if not

Implemented in TYPO3\CMS\Core\Cache\Frontend\AbstractFrontend.

isValidEntryIdentifier()

TYPO3\CMS\Core\Cache\Frontend\FrontendInterface::isValidEntryIdentifier

(

$identifier

)

Checks the validity of an entry identifier. Returns TRUE if it's valid.

Parameters

string

$identifier

An identifier to be checked for validity

Returns

bool

Implemented in TYPO3\CMS\Core\Cache\Frontend\AbstractFrontend.

isValidTag()

TYPO3\CMS\Core\Cache\Frontend\FrontendInterface::isValidTag

(

$tag

)

Checks the validity of a tag. Returns TRUE if it's valid.

Parameters

string

$tag

A tag to be checked for validity

Returns

bool

Implemented in TYPO3\CMS\Core\Cache\Frontend\AbstractFrontend.

remove()

TYPO3\CMS\Core\Cache\Frontend\FrontendInterface::remove

(

$entryIdentifier

)

Removes the given cache entry from the cache.

Parameters

string

$entryIdentifier

An identifier specifying the cache entry

Returns

bool TRUE if such an entry exists, FALSE if not

Implemented in TYPO3\CMS\Core\Cache\Frontend\AbstractFrontend.

set()

TYPO3\CMS\Core\Cache\Frontend\FrontendInterface::set	(		$entryIdentifier,
			$data,
		array	$tags = [],
			$lifetime = null
	)

Saves data in the cache.

Parameters

string	$entryIdentifier	Something which identifies the data - depends on concrete cache
mixed	$data	The data to cache - also depends on the concrete cache implementation
array	$tags	Tags to associate with this cache entry
int	$lifetime	Lifetime of this cache entry in seconds. If NULL is specified, the default lifetime is used. "0" means unlimited liftime.

Returns

void

Implemented in TYPO3\CMS\Core\Cache\Frontend\VariableFrontend, TYPO3\CMS\Core\Cache\Frontend\PhpFrontend, and TYPO3\CMS\Core\Cache\Frontend\StringFrontend.

Member Data Documentation

PATTERN_ENTRYIDENTIFIER

const TYPO3\CMS\Core\Cache\Frontend\FrontendInterface::PATTERN_ENTRYIDENTIFIER = '/^[a-zA-Z0-9_%\\-&]{1,250}$/'

Pattern an entry identifer must match.

Definition at line 34 of file FrontendInterface.php.

PATTERN_TAG

const TYPO3\CMS\Core\Cache\Frontend\FrontendInterface::PATTERN_TAG = '/^[a-zA-Z0-9_%\\-&]{1,250}$/'

Pattern a tag must match.

Definition at line 38 of file FrontendInterface.php.

TAG_CLASS

const TYPO3\CMS\Core\Cache\Frontend\FrontendInterface::TAG_CLASS = '%CLASS%'

"Magic" tag for class-related entries

Definition at line 26 of file FrontendInterface.php.

TAG_PACKAGE

const TYPO3\CMS\Core\Cache\Frontend\FrontendInterface::TAG_PACKAGE = '%PACKAGE%'

"Magic" tag for package-related entries

Definition at line 30 of file FrontendInterface.php.