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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\ServiceManager\Proxy;
use ProxyManager\Factory\LazyLoadingValueHolderFactory;
use ProxyManager\Proxy\LazyLoadingInterface;
use Zend\ServiceManager\DelegatorFactoryInterface;
use Zend\ServiceManager\Exception;
use Zend\ServiceManager\ServiceLocatorInterface;
/**
* Delegator factory responsible of instantiating lazy loading value holder proxies of
* given services at runtime
*
* @link https://github.com/Ocramius/ProxyManager/blob/master/docs/lazy-loading-value-holder.md
*/
class LazyServiceFactory implements DelegatorFactoryInterface
{
/**
* @var \ProxyManager\Factory\LazyLoadingValueHolderFactory
*/
protected $proxyFactory;
/**
* @var string[] map of service names to class names
*/
protected $servicesMap;
/**
* @param LazyLoadingValueHolderFactory $proxyFactory
* @param string[] $servicesMap a map of service names to class names of their
* respective classes
*/
public function __construct(LazyLoadingValueHolderFactory $proxyFactory, array $servicesMap)
{
$this->proxyFactory = $proxyFactory;
$this->servicesMap = $servicesMap;
}
/**
* {@inheritDoc}
*
* @return object|\ProxyManager\Proxy\LazyLoadingInterface|\ProxyManager\Proxy\ValueHolderInterface
*/
public function createDelegatorWithName(ServiceLocatorInterface $serviceLocator, $name, $requestedName, $callback)
{
$initializer = function (& $wrappedInstance, LazyLoadingInterface $proxy) use ($callback) {
$proxy->setProxyInitializer(null);
$wrappedInstance = call_user_func($callback);
return true;
};
if (isset($this->servicesMap[$requestedName])) {
return $this->proxyFactory->createProxy($this->servicesMap[$requestedName], $initializer);
} elseif (isset($this->servicesMap[$name])) {
return $this->proxyFactory->createProxy($this->servicesMap[$name], $initializer);
}
throw new Exception\InvalidServiceNameException(
sprintf('The requested service "%s" was not found in the provided services map', $requestedName)
);
}
}