Inheritance diagram for Typo3DatabaseBackend:

Public Member Functions
	setCache (\TYPO3\CMS\Core\Cache\Frontend\FrontendInterface $cache)

	set ($entryIdentifier, $data, array $tags=array(), $lifetime=null)

	get ($entryIdentifier)

	has ($entryIdentifier)

	remove ($entryIdentifier)

	findIdentifiersByTag ($tag)

	flush ()

	flushByTag ($tag)

	collectGarbage ()

	getCacheTable ()

	getTagsTable ()

	setCompression ($compression)

	setCompressionLevel ($compressionLevel)

	getTableDefinitions ()

Public Member Functions inherited from AbstractBackend
	__construct ($context, array $options=array())

	setCache (\TYPO3\CMS\Core\Cache\Frontend\FrontendInterface $cache)

	setDefaultLifetime ($defaultLifetime)

Public Attributes
const	FAKED_UNLIMITED_EXPIRE = 2145909600

Public Attributes inherited from AbstractBackend
const	DATETIME_EXPIRYTIME_UNLIMITED = '9999-12-31T23:59:59+0000'

const	UNLIMITED_LIFETIME = 0

Protected Member Functions
	initializeCommonReferences ()

	flushByTagDbal ($tag)

	collectGarbageDbal ()

	throwExceptionIfFrontendDoesNotExist ()

Protected Member Functions inherited from AbstractBackend
	calculateExpiryTime ($lifetime=null)

Protected Attributes
	$cacheTable

	$tagsTable

	$compression = false

	$compressionLevel = -1

	$identifierField

	$expiresField

	$maximumLifetime

	$notExpiredStatement

	$expiredStatement

	$tableList

	$tableJoin

Protected Attributes inherited from AbstractBackend
	$cache

	$cacheIdentifier

	$context

	$defaultLifetime = 3600

Detailed Description

A caching backend which stores cache entries in database tables

Definition at line 21 of file Typo3DatabaseBackend.php.

Member Function Documentation

collectGarbage ( )

Does garbage collection

Returns: void

Implements BackendInterface.

Definition at line 316 of file Typo3DatabaseBackend.php.

References $GLOBALS, Typo3DatabaseBackend\collectGarbageDbal(), and Typo3DatabaseBackend\throwExceptionIfFrontendDoesNotExist().

collectGarbageDbal ( )

protected

Does garbage collection for DBAL databases

Returns: void

Definition at line 336 of file Typo3DatabaseBackend.php.

References $GLOBALS.

Referenced by Typo3DatabaseBackend\collectGarbage().

findIdentifiersByTag ( $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 identifiers of all matching entries. An empty array if no entries matched

Implements TaggableBackendInterface.

Definition at line 240 of file Typo3DatabaseBackend.php.

References $GLOBALS, and Typo3DatabaseBackend\throwExceptionIfFrontendDoesNotExist().

flush ( )

Removes all cache entries of this cache.

Returns: void

Implements BackendInterface.

Definition at line 261 of file Typo3DatabaseBackend.php.

References $GLOBALS, and Typo3DatabaseBackend\throwExceptionIfFrontendDoesNotExist().

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

Implements TaggableBackendInterface.

Definition at line 274 of file Typo3DatabaseBackend.php.

References $GLOBALS, Typo3DatabaseBackend\flushByTagDbal(), and Typo3DatabaseBackend\throwExceptionIfFrontendDoesNotExist().

flushByTagDbal ( $tag )

protected

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

Parameters

string $tag The tag the entries must have

Returns: void

Definition at line 295 of file Typo3DatabaseBackend.php.

References $GLOBALS.

Referenced by Typo3DatabaseBackend\flushByTag().

get ( $entryIdentifier )

Loads data from a cache file.

Parameters

string $entryIdentifier An identifier which describes the cache entry to load

Returns: mixed The cache entry's data as a string or FALSE if the cache entry could not be loaded

Implements BackendInterface.

Definition at line 170 of file Typo3DatabaseBackend.php.

References $GLOBALS, and Typo3DatabaseBackend\throwExceptionIfFrontendDoesNotExist().

getCacheTable ( )

Returns the table where the cache entries are stored.

Returns: string The cache table.

Definition at line 358 of file Typo3DatabaseBackend.php.

References Typo3DatabaseBackend\$cacheTable, and Typo3DatabaseBackend\throwExceptionIfFrontendDoesNotExist().

getTableDefinitions ( )

Calculate needed table definitions for this cache. This helper method is used by install tool and extension manager and is not part of the public API!

Returns: string SQL of table definitions

Definition at line 419 of file Typo3DatabaseBackend.php.

getTagsTable ( )

Gets the table where cache tags are stored.

Returns: string Name of the table storing tags

Definition at line 369 of file Typo3DatabaseBackend.php.

References Typo3DatabaseBackend\$tagsTable, and Typo3DatabaseBackend\throwExceptionIfFrontendDoesNotExist().

has ( $entryIdentifier )

Checks if a cache entry with the specified identifier exists.

Parameters

string $entryIdentifier Specifies the identifier to check for existence

Returns: bool TRUE if such an entry exists, FALSE if not

Implements BackendInterface.

Definition at line 194 of file Typo3DatabaseBackend.php.

References $GLOBALS, and Typo3DatabaseBackend\throwExceptionIfFrontendDoesNotExist().

initializeCommonReferences ( )

protected

Initializes common references used in this backend.

Returns: void

Definition at line 102 of file Typo3DatabaseBackend.php.

References $GLOBALS, and Typo3DatabaseBackend\$tagsTable.

Referenced by Typo3DatabaseBackend\setCache().

remove ( $entryIdentifier )

Removes all cache entries matching the specified identifier. Usually this only affects one entry.

Parameters

string $entryIdentifier Specifies the cache entry to remove

Returns: bool TRUE if (at least) an entry could be removed or FALSE if no entry was found

Implements BackendInterface.

Definition at line 216 of file Typo3DatabaseBackend.php.

References $GLOBALS, and Typo3DatabaseBackend\throwExceptionIfFrontendDoesNotExist().

set	(		$entryIdentifier,
			$data,
		array	$tags = `array()`,
			$lifetime = `null`
	)

Saves data in a cache file.

Parameters

string	$entryIdentifier	An identifier for this specific cache entry
string	$data	The data to be stored
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

Exceptions

\TYPO3\CMS\Core\Cache\Exception	if no cache frontend has been set.
\TYPO3\CMS\Core\Cache\Exception\InvalidDataException	if the data to be stored is not a string.

Implements BackendInterface.

Definition at line 124 of file Typo3DatabaseBackend.php.

References AbstractBackend\$defaultLifetime, $GLOBALS, Typo3DatabaseBackend\$maximumLifetime, and Typo3DatabaseBackend\throwExceptionIfFrontendDoesNotExist().

setCache ( \TYPO3\CMS\Core\Cache\Frontend\FrontendInterface $cache )

Set cache frontend instance and calculate data and tags table name

Parameters

\TYPO3\CMS\Core\Cache\Frontend\FrontendInterface $cache The frontend for this backend