Class: TCacheManager

Source Location: /TCacheManager.php

Class Overview

TCacheManager class

Class Details

[line 35]
TCacheManager class

TCacheManager manages the caching of components. The creation of a PRADO component may be time consuming because it needs to read many files to finish the definition of a component. TCacheManager provides a way to accelerate this process by saving a serialized copy in memory and in file. An instantiation of the same typed component can then be directly unserialized from the copy which significantly shortens the time needed for creation.

version:	v1.0, last update on 2004/08/13 21:44:52
author:	Qiang Xue <qiang.xue@gmail.com>

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Variables

Constants

EXT_CACHE

Methods

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Class Methods

constructor __construct [line 73]

TCacheManager __construct(
mixed
$config)

Constructor.

Reads the configuration given in the app spec. In particular, the attribute 'enabled' and 'path' are read.

Parameters:

mixed

$config

the configuration.

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method cacheComponent [line 159]

void cacheComponent(
TComponent
$component)

Saves a component to cache.

This method saves the serialized component into memory and as a file (if necessary).

Derived classes may override this method to provide other ways of caching component. Be sure to override cloneComponent to make it consistent.

access:	public
see:	TCacheManager::cloneComponent()

Parameters:

TComponent

$component

the component to be cached

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method cloneComponent [line 119]

TComponent cloneComponent(
string
$type)

Creates a component from cache.

This method unserializes a component from memory or a file.

Derived classes may override this method to provide other ways of caching component. Be sure to override cacheComponent to make it consistent.

return:	the component created, null if failed.
access:	public
see:	TCacheManager::cacheComponent()

Parameters:

string

$type

the type of the component to be created

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method setCurrentModule [line 97]

void setCurrentModule(
string
$name)

Sets the current module name.

Since module is related with namespace partition, it is important for cache manager to know under which module (namespace) a component is created and cached. Module name affects the location a component is cached.

access:

public

Parameters:

string

$name

the module name

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Class Constants

EXT_CACHE = '.bin'

[line 40]

name extension to cache files (for storing serialized components)

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