External Service Example

FooController.php

class FooController extends ActionController {
	/**
	* @var \Vnd\Ext\Service\ItemService
	* @inject
	*/
	protected $itemService;
	
	pubflic function fooAction() {
		// Simple here, dont forget proper exception handling
		$this->view->assign('items', $this->itemService->getProcessedItems());
	}
}

ItemService.php

class ItemService implements SingletonInterface {

	/**
	* @var \Vnd\Ext\Domain\Repository\ItemRepository
	* @inject
	*/
	protected $itemRepository = NULL;
	
	/**
	* @var \Vnd\Ext\Service\ItemWebservice
	* @inject
	*/
	protected $itemWebService = NULL;

	public function initializeObject() {
		// prepare your webservervice or whatever
	}
	
	public function getProcessedItems() {
		$items = $this->itemRepository->findByParamter('..');
		// process items with your webservice
		$processedItems = array();
		foreach ($items as $item) {
			processedItems[] = $ths->itemWebService->checkAvailability($item);
		}
		return $processedItems;
	}

}