netstorebaseaction.java

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package netstore.framework;

import java.util.Collection;
import java.util.LinkedList;
import java.util.List;
import java.util.Locale;
import java.util.Iterator;
import javax.servlet.http.*;
import org.apache.struts.action.*;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import netstore.framework.util.IConstants;
import netstore.framework.exceptions.*;
import netstore.service.*;

/**
 * An abstract Action class that all Netstore action classes should extend.
 */
abstract public class NetstoreBaseAction extends Action {
	Log log = LogFactory.getLog(this.getClass());

	protected INetstoreService getNetstoreService() {
		// 得到工厂
		INetstoreServiceFactory factory = (INetstoreServiceFactory) getApplicationObject(IConstants.SERVICE_FACTORY_KEY);
		INetstoreService service = null;

		// 通过工厂得到代理
		try {
			service = factory.createService();
		} catch (Exception ex) {
			log.error("Problem creating the Netstore Service", ex);
		}
		return service;
	}

	protected CustServiceImpl getCustService() {
		INetstoreServiceFactory factory = (INetstoreServiceFactory) getApplicationObject(IConstants.SERVICE_FACTORY_KEY);
		CustServiceImpl service = null;
		try {
			service = factory.createCustService();
		} catch (Exception ex) {
			log.error("Problem creating the Netstore Service", ex);
		}
		return service;
	}

	protected ProdServiceImpl getProdService() {
		INetstoreServiceFactory factory = (INetstoreServiceFactory) getApplicationObject(IConstants.SERVICE_FACTORY_KEY);
		ProdServiceImpl service = null;
		try {
			service = factory.createProdService();
		} catch (Exception ex) {
			log.error("Problem creating the Netstore Service", ex);
		}
		return service;
	}

	protected OrderServiceImpl getOrderService() {
		INetstoreServiceFactory factory = (INetstoreServiceFactory) getApplicationObject(IConstants.SERVICE_FACTORY_KEY);
		OrderServiceImpl service = null;
		try {
			service = factory.createOrderService();
		} catch (Exception ex) {
			log.error("Problem creating the Netstore Service", ex);
		}
		return service;
	}

	/**
	 * Retrieve a session object based on the request and the attribute name.
	 */
	protected Object getSessionObject(HttpServletRequest req, String attrName) {
		Object sessionObj = null;
		HttpSession session = req.getSession(false);
		if (session != null) {
			sessionObj = session.getAttribute(attrName);
		}
		return sessionObj;
	}

	/**
	 * Return the instance of the ApplicationContainer object.
	 */
	protected ApplicationContainer getApplicationContainer() {
		return (ApplicationContainer) getApplicationObject(IConstants.APPLICATION_CONTAINER_KEY);
	}

	/**
	 * Retrieve the SessionContainer for the user tier to the request.
	 */
	protected SessionContainer getSessionContainer(HttpServletRequest request) {

		SessionContainer sessionContainer = (SessionContainer) getSessionObject(
				request, IConstants.SESSION_CONTAINER_KEY);

		// Create a SessionContainer for the user if it doesn't exist already
		if (sessionContainer == null) {
			sessionContainer = new SessionContainer();
			sessionContainer.setLocale(request.getLocale());
			HttpSession session = request.getSession(true);
			session.setAttribute(IConstants.SESSION_CONTAINER_KEY,
					sessionContainer);
		}

		return sessionContainer;
	}

	/**
	 * Retrieve an object from the application scope by its name. This is a
	 * convience method.
	 */
	protected Object getApplicationObject(String attrName) {
		return servlet.getServletContext().getAttribute(attrName);
	}

	public boolean isLoggedIn(HttpServletRequest request) {
		SessionContainer container = getSessionContainer(request);
		if (container.getCustomer() != null) {
			return true;
		} else {
			return false;
		}
	}
}