Cache/Backend/ZendPlatform.php

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Zend Framework

LICENSE

This source file is subject to the new BSD license that is bundled with this package in the file LICENSE.txt. It is also available through the world-wide-web at this URL: http://framework.zend.com/license/new-bsd If you did not receive a copy of the license and are unable to obtain it through the world-wide-web, please send an email to license@zend.com so we can send you a copy immediately.

Category: Zend
Copyright: Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
License: New BSD License
Package: Zend_Cache
Subpackage: Zend_Cache_Backend
Version: $Id: ZendPlatform.php 24593 2012-01-05 20:35:02Z matthew $

\Zend_Cache_Backend_ZendPlatform
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Package: Zend\Cache\Zend\Cache\Backend

Impementation of Zend Cache Backend using the Zend Platform (Output Content Caching)

Implements: \Zend_Cache_Backend_Interface
Parent(s): \Zend_Cache_Backend
Copyright: Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
License: New BSD License

Constants

 
                TAGS_PREFIX
                = "internal_ZPtag:"

internal ZP prefix

Properties

array $_directives = array('lifetime' => 3600, 'logging' => false, 'logger' => null)

inherited

Frontend or Core directives

Inherited from: \Zend_Cache_Backend::$$_directives

=====> (int) lifetime : - Cache lifetime (in seconds) - If null, the cache is valid forever

=====> (int) logging : - if set to true, a logging is activated throw Zend_Log

Default valuearray('lifetime' => 3600, 'logging' => false, 'logger' => null)Details

Type: array
Inherited_from: \Zend_Cache_Backend::$$_directives

array $_options = array()

inherited

Available options

Inherited from: \Zend_Cache_Backend::$$_options

Default valuearray()Details

Type: array
Inherited_from: \Zend_Cache_Backend::$$_options

Methods

__construct(array $options = array()) : void

Constructor Validate that the Zend Platform is loaded and licensed

Parameters

Name	Type	Description
$options	array	Associative array of options

Throws

Exception	Description
\Zend_Cache_Exception

_clean(string $dir, string $mode) : boolean

Clean a directory and recursivly go over it's subdirectories

Remove all the cached files that need to be cleaned (according to mode and files mtime)

Parameters

Name	Type	Description
$dir	string	Path of directory ot clean
$mode	string	The same parameter as in Zend_Cache_Backend_ZendPlatform::clean()

Returns

Type	Description
boolean	True if ok

_isGoodTmpDir(string $dir) : boolean

inherited

Verify if the given temporary directory is readable and writable

Inherited from: \Zend_Cache_Backend::_isGoodTmpDir()

Parameters

Name	Type	Description
$dir	string	temporary directory

Returns

Type	Description
boolean	true if the directory is ok

_log(string $message, $priority = 4) : void

inherited

Log a message at the WARN (4) priority.

Inherited from: \Zend_Cache_Backend::_log()

Parameters

Name	Type	Description
$message	string
$priority

Throws

Exception	Description
\Zend_Cache_Exception

_loggerSanity() : void

inherited

Make sure if we enable logging that the Zend_Log class is available.

Inherited from: \Zend_Cache_Backend::_loggerSanity()

Create a default log object if none is set.

Throws

Exception	Description
\Zend_Cache_Exception

_remove(string $file) : boolean

Remove a file

If we can't remove the file (because of locks or any problem), we will touch the file to invalidate it

Parameters

Name	Type	Description
$file	string	Complete file path

Returns

Type	Description
boolean	True if ok

clean(string $mode = \Zend_Cache::CLEANING_MODE_ALL, array $tags = array()) : boolean

Clean some cache records

Available modes are : Zend_Cache::CLEANING_MODE_ALL (default) => remove all cache entries ($tags is not used) Zend_Cache::CLEANING_MODE_OLD => remove too old cache entries ($tags is not used) This mode is not supported in this backend Zend_Cache::CLEANING_MODE_MATCHING_TAG => remove cache entries matching all given tags ($tags can be an array of strings or a single string) Zend_Cache::CLEANING_MODE_NOT_MATCHING_TAG => unsupported Zend_Cache::CLEANING_MODE_MATCHING_ANY_TAG => remove cache entries matching any given tags ($tags can be an array of strings or a single string)

Parameters

Name	Type	Description
$mode	string	Clean mode
$tags	array	Array of tags

Returns

Type	Description
boolean	True if no problem

Throws

Exception	Description
\Zend_Cache_Exception

getLifetime(int $specificLifetime) : int

inherited

Get the life time

Inherited from: \Zend_Cache_Backend::getLifetime()

if $specificLifetime is not false, the given specific life time is used else, the global lifetime is used

Parameters

Name	Type	Description
$specificLifetime	int

Returns

Type	Description
int	Cache life time

getOption(string $name) : mixed

inherited

Returns an option

Inherited from: \Zend_Cache_Backend::getOption()

Parameters

Name	Type	Description
$name	string	Optional, the options name to return

Returns

Type	Description
mixed

Throws

Exception	Description
\Zend_Cache_Exceptions

getTmpDir() : string

inherited

Determine system TMP directory and detect if we have read access

Inherited from: \Zend_Cache_Backend::getTmpDir()

inspired from Zend_File_Transfer_Adapter_Abstract

Returns

Type	Description
string

Throws

Exception	Description
\Zend_Cache_Exception	if unable to determine directory

isAutomaticCleaningAvailable() : boolean

inherited

Return true if the automatic cleaning is available for the backend

Inherited from: \Zend_Cache_Backend::isAutomaticCleaningAvailable()

DEPRECATED : use getCapabilities() instead

Returns

Type	Description
boolean

load(string $id, boolean $doNotTestCacheValidity = false) : string

Test if a cache is available for the given id and (if yes) return it (false else)

Note : return value is always "string" (unserialization is done by the core not by the backend)

Parameters

Name	Type	Description
$id	string	Cache id
$doNotTestCacheValidity	boolean	If set to true, the cache validity won't be tested

Returns

Type	Description
string	Cached data (or false)

remove(string $id) : boolean

Remove a cache record

Parameters

Name	Type	Description
$id	string	Cache id

Returns

Type	Description
boolean	True if no problem

save(string $data, string $id, array $tags = array(), int $specificLifetime = false) : boolean

Save some string datas into a cache record

Note : $data is always "string" (serialization is done by the core not by the backend)

Parameters

Name	Type	Description
$data	string	Data to cache
$id	string	Cache id
$tags	array	Array of strings, the cache record will be tagged by each string entry
$specificLifetime	int	If != false, set a specific lifetime for this cache record (null => infinite lifetime)

Returns

Type	Description
boolean	true if no problem

setDirectives(array $directives) : void

inherited

Set the frontend directives

Inherited from: \Zend_Cache_Backend_Interface::setDirectives()

Parameters

Name	Type	Description
$directives	array	assoc of directives

Throws

Exception	Description
\Zend_Cache_Exception

setOption(string $name, mixed $value) : void

inherited

Set an option

Inherited from: \Zend_Cache_Backend::setOption()

Parameters

Name	Type	Description
$name	string
$value	mixed

Throws

Exception	Description
\Zend_Cache_Exception

test(string $id) : mixed | false

Test if a cache is available or not (for the given id)

Parameters

Name	Type	Description
$id	string	Cache id

Returns

Type	Description
mixed \| false	false (a cache is not available) or "last modified" timestamp (int) of the available cache record

Cache/Backend/ZendPlatform.php

\Zend_Cache_Backend_ZendPlatformjump to top

Constants

Properties

Methods

\Zend_Cache_Backend_ZendPlatform
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