Docs For Class lmbCmsApplication

Description

lmbFilterChain is an implementation of InterceptinfFilter design pattern.

lmbFilterChain contains registered filters and controls execution of the chain. Usually used as a FrontController in Limb based web applications (see web_app package)

lmbFilterChain can be an intercepting filter in its turn as well.

The best way to think about filters is as of a "russian nested doll", e.g:

// +-Filter A
// | +-Filter B
// | | +-Filter C
// | | |_
// | |_
// |_

To achieve this sample structure you should write the following code:

$chain = new lmbFilterChain();
$chain->registerFilter(new A());
$chain->registerFilter(new B());
$chain->registerFilter(new C());

Remember, it's the filter that decides whether to pass control to the underlying filter, this is done by calling filter chain instance next() method.

Usage example:

lmb_require('limb/filter_chain/src/lmbFilterChain.class.php');
//create new chain
$chain = new lmbFilterChain();
//register filter object in the chain
$chain->registerFilter(new MyFilter());
//register a handle for a filter in the chain
//in this case we can avoid PHP code parsing if
//this filter won't be processed
$chain->registerFilter(new lmbHandle('/path/to/MyFilter'));
//executes the chain
$chain->process();

version: $Id: lmbFilterChain.class.php 6243 2007-08-29 11:53:10Z pachanga $

Located in /cms/src/lmbCmsApplication.class.php (line 5)

lmbFilterChain
   |
   --lmbCmsApplication

Method Summary

lmbCmsApplication __construct ()

Variables

Inherited Variables

Inherited from lmbFilterChain

lmbFilterChain::$counter
lmbFilterChain::$filters

Methods

Constructor __construct (line 7)

lmbCmsApplication __construct ()

Redefinition of:

lmbFilterChain::__construct()

Inherited Methods

Inherited From lmbFilterChain

lmbFilterChain::__construct()
lmbFilterChain::getFilters()
lmbFilterChain::next()
lmbFilterChain::process()
lmbFilterChain::registerFilter()
lmbFilterChain::run()