<?php
/**
* Script to provide different examples of using the registry/service locator
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @author SoBeNoFear <ianunruh@gmail.com>
* @copyright 2007-2009 Ian Unruh
* @license LGPLv3 http://gnu.org/licenses/lgpl.txt
* @version 1.0
* @package RSL
*/
include_once 'Registry.class.php';
###################################################################################
## Provide a fake application class to test the registry on
###################################################################################
class App {
protected $r;
## This constructor demonstrates the ability to leave the registry instance
## in a property of the app; this shortens the amount of typing
public function __construct(){
## INSTANCE or SINGLETON both work; it's whatever you prefer
$this->r = Registry::instance();
}
## Call a property from a registry object with the magic method
public function who(){
return $this->r->user->name;
}
## Call a method from an abstract service
public function encrypt(){
$encryptionDriver = Registry::getConcrete('Encryption');
return $encryptionDriver->identify();
}
## Check a property from a registry object using quick access
public function checkConfig($key){
return Registry::singleton()->getObj('config')->$key;
}
}
###################################################################################
## A couple test classes you might want to share with the rest of your app
###################################################################################
class User {
public $name;
public function __construct($name){
$this->name = $name;
}
}
class Config {
public $settingOne = true;
public $settingTwo = false;
}
###################################################################################
## An encryption interface that can be interchanged
###################################################################################
interface IEncryption {
function identify();
}
class AESEncryption implements IEncryption {
public function identify(){
return "Hi, I'm AES encryption";
}
}
class BlowfishEncryption implements IEncryption {
public function identify(){
return "Hi, I'm Blowfish encryption";
}
}
###################################################################################
## Now grab registry and add classes
###################################################################################
$registry = Registry::singleton();
## You can turn the overwrite on and off (default: off)
$registry->setOverwrite(false);
## Magic method
$registry->user = new User('Tally');
## ArrayAccess method
$registry['config'] = new Config();
###################################################################################
## Service locator-specific functions
###################################################################################
## Bind an encryption interface to the abstract Encryption
Registry::bind('Encryption', 'BlowfishEncryption');
## Check if the interface is bound
echo "Encryption interface bound: ";
var_dump(Registry::bound('Encryption'));
echo "<br /><br />\n";
## Get a concrete object for encryption
$database = Registry::getConcrete('Encryption');
###################################################################################
## Call up the app and check if all these work
###################################################################################
$app = new App();
echo "Hi, my username is <b>{$app->who()}</b><br />
<br />
This app is using an encryption engine; It says:<br />
<b>{$app->encrypt()}</b><br />
<br />
I have a configuration item that is set to:<br />
<b>{$app->checkConfig('settingOne')}</b>";
###################################################################################
## Test the iterator interface
###################################################################################
echo "<pre>";
foreach(Registry::singleton() as $a=>$o){
echo "Alias/abstract <b>{$a}</b> is set to object/concrete: <b>";
var_dump($o);
echo "</b>\n";
}
echo "</pre>";
## Unbind the encryption interface
Registry::unbind('Encryption');
## Unset the User class
unset($registry->user);
###################################################################################
## Try to clone Registry class
###################################################################################
$newRegistry = clone($registry);
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