TYPO3\CMS\Core\Cache\Backend\AbstractBackend Class Reference

Inheritance diagram for TYPO3\CMS\Core\Cache\Backend\AbstractBackend:

Public Member Functions
	__construct ($context, array $options=[])
	setCache (\TYPO3\CMS\Core\Cache\Frontend\FrontendInterface $cache)
	setDefaultLifetime ($defaultLifetime)
Public Member Functions inherited from TYPO3\CMS\Core\Cache\Backend\BackendInterface
	set ($entryIdentifier, $data, array $tags=[], $lifetime=null)
	get ($entryIdentifier)
	has ($entryIdentifier)
	remove ($entryIdentifier)
	flush ()
	collectGarbage ()

Public Attributes
const	DATETIME_EXPIRYTIME_UNLIMITED = '9999-12-31T23:59:59+0000'
const	UNLIMITED_LIFETIME = 0

Protected Member Functions
	calculateExpiryTime ($lifetime=null)

Protected Attributes
	$cache
	$cacheIdentifier
	$context
	$defaultLifetime = 3600

Detailed Description

An abstract caching backend

This file is a backport from FLOW3

Definition at line 23 of file AbstractBackend.php.

Constructor & Destructor Documentation

__construct()

TYPO3\CMS\Core\Cache\Backend\AbstractBackend::__construct	(		$context,
		array	$options = []
	)

Constructs this backend

Parameters

string	$context	FLOW3's application context
array	$options	Configuration options - depends on the actual backend

Exceptions

Definition at line 65 of file AbstractBackend.php.

References TYPO3\CMS\Core\Cache\Backend\AbstractBackend\$context.

Member Function Documentation

calculateExpiryTime()

TYPO3\CMS\Core\Cache\Backend\AbstractBackend::calculateExpiryTime (   $lifetime = null )

protected

Calculates the expiry time by the given lifetime. If no lifetime is specified, the default lifetime is used.

Parameters

int

$lifetime

The lifetime in seconds

Returns

The expiry time

Definition at line 116 of file AbstractBackend.php.

References TYPO3\CMS\Core\Cache\Backend\AbstractBackend\$defaultLifetime.

setCache()

TYPO3\CMS\Core\Cache\Backend\AbstractBackend::setCache

(

\TYPO3\CMS\Core\Cache\Frontend\FrontendInterface

$cache

)

Sets a reference to the cache frontend which uses this backend

Parameters

\TYPO3\CMS\Core\Cache\Frontend\FrontendInterface

$cache

The frontend for this backend

Returns

void

Implements TYPO3\CMS\Core\Cache\Backend\BackendInterface.

Definition at line 87 of file AbstractBackend.php.

References TYPO3\CMS\Core\Cache\Backend\AbstractBackend\$cache.

setDefaultLifetime()

TYPO3\CMS\Core\Cache\Backend\AbstractBackend::setDefaultLifetime

(

$defaultLifetime

)

Sets the default lifetime for this cache backend

Parameters

int

$defaultLifetime

Default lifetime of this cache backend in seconds. If NULL is specified, the default lifetime is used. "0" means unlimited liftime.

Returns

void

Exceptions

Definition at line 101 of file AbstractBackend.php.

References TYPO3\CMS\Core\Cache\Backend\AbstractBackend\$defaultLifetime.

Member Data Documentation

$cache

TYPO3\CMS\Core\Cache\Backend\AbstractBackend::$cache

protected

Definition at line 32 of file AbstractBackend.php.

Referenced by TYPO3\CMS\Core\Cache\Backend\AbstractBackend\setCache().

$cacheIdentifier

TYPO3\CMS\Core\Cache\Backend\AbstractBackend::$cacheIdentifier

protected

Definition at line 37 of file AbstractBackend.php.

Referenced by TYPO3\CMS\Core\Cache\Backend\ApcBackend\set(), TYPO3\CMS\Core\Cache\Backend\ApcuBackend\set(), TYPO3\CMS\Core\Cache\Backend\MemcachedBackend\set(), and TYPO3\CMS\Core\Cache\Backend\Typo3DatabaseBackend\setCache().

$context

TYPO3\CMS\Core\Cache\Backend\AbstractBackend::$context

protected

Definition at line 48 of file AbstractBackend.php.

Referenced by TYPO3\CMS\Core\Cache\Backend\WincacheBackend\__construct(), TYPO3\CMS\Core\Cache\Backend\XcacheBackend\__construct(), TYPO3\CMS\Core\Cache\Backend\AbstractBackend\__construct(), TYPO3\CMS\Core\Cache\Backend\ApcBackend\__construct(), TYPO3\CMS\Core\Cache\Backend\ApcuBackend\__construct(), TYPO3\CMS\Core\Cache\Backend\MemcachedBackend\__construct(), and TYPO3\CMS\Core\Cache\Backend\RedisBackend\__construct().

$defaultLifetime

TYPO3\CMS\Core\Cache\Backend\AbstractBackend::$defaultLifetime = 3600

protected

Definition at line 55 of file AbstractBackend.php.

Referenced by TYPO3\CMS\Core\Cache\Backend\AbstractBackend\calculateExpiryTime(), TYPO3\CMS\Core\Cache\Backend\WincacheBackend\set(), TYPO3\CMS\Core\Cache\Backend\XcacheBackend\set(), TYPO3\CMS\Core\Cache\Backend\Typo3DatabaseBackend\set(), TYPO3\CMS\Core\Cache\Backend\ApcBackend\set(), TYPO3\CMS\Core\Cache\Backend\ApcuBackend\set(), TYPO3\CMS\Core\Cache\Backend\MemcachedBackend\set(), and TYPO3\CMS\Core\Cache\Backend\AbstractBackend\setDefaultLifetime().

DATETIME_EXPIRYTIME_UNLIMITED

const TYPO3\CMS\Core\Cache\Backend\AbstractBackend::DATETIME_EXPIRYTIME_UNLIMITED = '9999-12-31T23:59:59+0000'

Definition at line 25 of file AbstractBackend.php.

UNLIMITED_LIFETIME

const TYPO3\CMS\Core\Cache\Backend\AbstractBackend::UNLIMITED_LIFETIME = 0

Definition at line 26 of file AbstractBackend.php.