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

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

Public Member Functions
	set ($entryIdentifier, $data, array $tags=array(), $lifetime=NULL)
	setCompression ($compression)
	get ($entryIdentifier)
	has ($entryIdentifier)
	remove ($entryIdentifier)
	findIdentifiersByTag ($tag)
	flush ()
	flushByTag ($tag)
	collectGarbage ()
	requireOnce ($identifier)
Public Member Functions inherited from TYPO3\CMS\Core\Cache\Backend\AbstractBackend
	__construct ($context, array $options=array())
	setCache (\TYPO3\CMS\Core\Cache\Frontend\FrontendInterface $cache)
	setDefaultLifetime ($defaultLifetime)

Additional Inherited Members
Public Attributes inherited from TYPO3\CMS\Core\Cache\Backend\AbstractBackend
const	DATETIME_EXPIRYTIME_UNLIMITED = '9999-12-31T23:59:59+0000'
const	UNLIMITED_LIFETIME = 0
Protected Member Functions inherited from TYPO3\CMS\Core\Cache\Backend\AbstractBackend
	calculateExpiryTime ($lifetime=NULL)
Protected Attributes inherited from TYPO3\CMS\Core\Cache\Backend\AbstractBackend
	$cache
	$cacheIdentifier
	$context
	$defaultLifetime = 3600

Detailed Description

This file is part of the TYPO3 CMS project.

It is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License, either version 2 of the License, or any later version.

For the full copyright and license information, please read the LICENSE.txt file that was distributed with this source code.

The TYPO3 project - inspiring people to share! A caching backend which forgets everything immediately

This file is a backport from FLOW3

Author

Robert Lemke rober.nosp@m.t@ty.nosp@m.po3.o.nosp@m.rg

Karsten Dambekalns karst.nosp@m.en@t.nosp@m.ypo3..nosp@m.org

Definition at line 25 of file NullBackend.php.

Member Function Documentation

collectGarbage()

TYPO3\CMS\Core\Cache\Backend\NullBackend::collectGarbage

(

)

Does nothing

Returns

void

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

Definition at line 122 of file NullBackend.php.

findIdentifiersByTag()

TYPO3\CMS\Core\Cache\Backend\NullBackend::findIdentifiersByTag

(

$tag

)

Returns an empty array

Parameters

string

$tag

ignored

Returns

array An empty array

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

Definition at line 91 of file NullBackend.php.

flush()

TYPO3\CMS\Core\Cache\Backend\NullBackend::flush

(

)

Does nothing

Returns

void

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

Definition at line 101 of file NullBackend.php.

flushByTag()

TYPO3\CMS\Core\Cache\Backend\NullBackend::flushByTag

(

$tag

)

Does nothing

Parameters

string

$tag

ignored

Returns

void

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

Definition at line 112 of file NullBackend.php.

get()

TYPO3\CMS\Core\Cache\Backend\NullBackend::get

(

$entryIdentifier

)

Returns False

Parameters

string

$entryIdentifier

ignored

Returns

boolean FALSE

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

Definition at line 58 of file NullBackend.php.

has()

TYPO3\CMS\Core\Cache\Backend\NullBackend::has

(

$entryIdentifier

)

Returns False

Parameters

string

$entryIdentifier

ignored

Returns

boolean FALSE

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

Definition at line 69 of file NullBackend.php.

remove()

TYPO3\CMS\Core\Cache\Backend\NullBackend::remove

(

$entryIdentifier

)

Does nothing

Parameters

string

$entryIdentifier

ignored

Returns

boolean FALSE

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

Definition at line 80 of file NullBackend.php.

requireOnce()

TYPO3\CMS\Core\Cache\Backend\NullBackend::requireOnce

(

$identifier

)

Does nothing

Parameters

string

$identifier

An identifier which describes the cache entry to load

Returns

void

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

Definition at line 133 of file NullBackend.php.

set()

TYPO3\CMS\Core\Cache\Backend\NullBackend::set	(		$entryIdentifier,
			$data,
		array	$tags = array(),
			$lifetime = NULL
	)

Acts as if it would save data

Parameters

string	$entryIdentifier	ignored
string	$data	ignored
array	$tags	ignored
integer	$lifetime	ignored

Returns

void

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

Definition at line 37 of file NullBackend.php.

setCompression()

TYPO3\CMS\Core\Cache\Backend\NullBackend::setCompression

(

$compression

)

Acts as if it would enable data compression

Parameters

boolean

$compression

ignored

Returns

void

Definition at line 47 of file NullBackend.php.