Middleware.php
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<?php
/**
* Slim - a micro PHP 5 framework
*
* @author Josh Lockhart <info@slimframework.com>
* @copyright 2011 Josh Lockhart
* @link http://www.slimframework.com
* @license http://www.slimframework.com/license
* @version 2.6.1
* @package Slim
*
* MIT LICENSE
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
namespace Slim;
/**
* Middleware
*
* @package Slim
* @author Josh Lockhart
* @since 1.6.0
*/
abstract class Middleware
{
/**
* @var \Slim\Slim Reference to the primary application instance
*/
protected $app;
/**
* @var mixed Reference to the next downstream middleware
*/
protected $next;
/**
* Set application
*
* This method injects the primary Slim application instance into
* this middleware.
*
* @param \Slim\Slim $application
*/
final public function setApplication($application)
{
$this->app = $application;
}
/**
* Get application
*
* This method retrieves the application previously injected
* into this middleware.
*
* @return \Slim\Slim
*/
final public function getApplication()
{
return $this->app;
}
/**
* Set next middleware
*
* This method injects the next downstream middleware into
* this middleware so that it may optionally be called
* when appropriate.
*
* @param \Slim|\Slim\Middleware
*/
final public function setNextMiddleware($nextMiddleware)
{
$this->next = $nextMiddleware;
}
/**
* Get next middleware
*
* This method retrieves the next downstream middleware
* previously injected into this middleware.
*
* @return \Slim\Slim|\Slim\Middleware
*/
final public function getNextMiddleware()
{
return $this->next;
}
/**
* Call
*
* Perform actions specific to this middleware and optionally
* call the next downstream middleware.
*/
abstract public function call();
}