* return array( * 'session_containers' => array( * 'SessionContainer\sample', * 'my_sample_session_container', * 'MySessionContainer', * ), * ); * * * * $container = $services->get('MySessionContainer'); * */ class ContainerAbstractServiceFactory implements AbstractFactoryInterface { /** * Cached container configuration * * @var array */ protected $config; /** * Configuration key in which session containers live * * @var string */ protected $configKey = 'session_containers'; /** @var ManagerInterface */ protected $sessionManager; /** * Can we create an instance of the given service? (v3 usage). * * @param string $requestedName * @return bool */ public function canCreate(ContainerInterface $container, $requestedName) { $config = $this->getConfig($container); if (empty($config)) { return false; } $containerName = $this->normalizeContainerName($requestedName); return array_key_exists($containerName, $config); } /** * Can we create an instance of the given service? (v2 usage) * * @param string $name * @param string $requestedName * @return bool */ public function canCreateServiceWithName(ServiceLocatorInterface $container, $name, $requestedName) { return $this->canCreate($container, $requestedName); } /** * Create and return a named container (v3 usage). * * @param string $requestedName * @return Container */ public function __invoke(ContainerInterface $container, $requestedName, ?array $options = null) { $manager = $this->getSessionManager($container); return new Container($requestedName, $manager); } /** * Create and return a named container (v2 usage). * * @param string $name * @param string $requestedName * @return Container */ public function createServiceWithName(ServiceLocatorInterface $container, $name, $requestedName) { return $this($container, $requestedName); } /** * Retrieve config from service locator, and cache for later * * @return false|array */ protected function getConfig(ContainerInterface $container) { if (null !== $this->config) { return $this->config; } if (! $container->has('config')) { $this->config = []; return $this->config; } $config = $container->get('config'); if (! isset($config[$this->configKey]) || ! is_array($config[$this->configKey])) { $this->config = []; return $this->config; } $config = $config[$this->configKey]; $config = array_flip($config); $this->config = array_change_key_case($config); return $this->config; } /** * Retrieve the session manager instance, if any * * @return null|ManagerInterface */ protected function getSessionManager(ContainerInterface $container) { if ($this->sessionManager !== null) { return $this->sessionManager; } if ($container->has(ManagerInterface::class)) { $this->sessionManager = $container->get(ManagerInterface::class); } return $this->sessionManager; } /** * Normalize the container name in order to perform a lookup * * @param string $name * @return string */ protected function normalizeContainerName($name) { return strtolower($name); } }