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framework/control/injector/AopProxyService.php 1.5 KB
0084d336   Administrator   Importers CRUD
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  <?php
  
  /**
   * A class that proxies another, allowing various functionality to be
   * injected.
   * 
   * @package framework
   * @subpackage injector
   */
  class AopProxyService {
  	public $beforeCall = array();
  
  	public $afterCall = array();
  
  	public $proxied;
  	
  	/**
  	 * Because we don't know exactly how the proxied class is usually called,
  	 * provide a default constructor
  	 */
  	public function __construct() {
  		
  	}
  
  	public function __call($method, $args) {
  		if (method_exists($this->proxied, $method)) {
  			$continue = true;
  			$result = null;
  			
  			if (isset($this->beforeCall[$method])) {
  				$methods = $this->beforeCall[$method];
  				if (!is_array($methods)) {
  					$methods = array($methods);
  				}
  				foreach ($methods as $handler) {
  					$alternateReturn = null;
  					$proceed = $handler->beforeCall($this->proxied, $method, $args, $alternateReturn);
  					if ($proceed === false) {
  						$continue = false;
  						// if something is set in, use it
  						if ($alternateReturn) {
  							$result = $alternateReturn;
  						}
  					}
  				}
  			}
  
  			if ($continue) {
  				$result = call_user_func_array(array($this->proxied, $method), $args);
  			
  				if (isset($this->afterCall[$method])) {
  					$methods = $this->afterCall[$method];
  					if (!is_array($methods)) {
  						$methods = array($methods);
  					}
  					foreach ($methods as $handler) {
  						$return = $handler->afterCall($this->proxied, $method, $args, $result);
  						if (!is_null($return)) {
  							$result = $return;
  						}
  					}
  				}
  			}
  
  			return $result;
  		}
  	}
  }