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You acknowledge that Software is not designed, licensed or intended for use in the design, construction, operation or maintenance of any nuclear facility. $Id: AdventureComponentManager.java,v 1.1 2003/11/01 00:19:59 gmurray71 Exp $ */package com.sun.j2ee.blueprints.consumerwebsite;// j2ee importsimport javax.servlet.ServletContext;import javax.servlet.http.*;import java.beans.Beans;import com.sun.j2ee.blueprints.util.tracer.Debug;// WAF importsimport com.sun.j2ee.blueprints.waf.controller.web.WebComponentManager;// customer component importsimport com.sun.j2ee.blueprints.customer.CustomerFacade;// signon componentimport com.sun.j2ee.blueprints.signon.SignOnFacade;// Catalog importsimport com.sun.j2ee.blueprints.catalog.CatalogFacade;/**  * This class manages components used in the web tier *   */public class AdventureComponentManager extends WebComponentManager              implements HttpSessionListener {                public AdventureComponentManager () {    }        /**     *     * Initialize the component manager     *     */    public void init(HttpSession session) {        session.setAttribute(AdventureKeys.COMPONENT_MANAGER, this);        // intialize the adventure package        getCart(session);    }    /**     *     * Initialize what needs initialization     *     */    public void sessionCreated(HttpSessionEvent se) {        se.getSession().setAttribute(AdventureKeys.COMPONENT_MANAGER, this);        se.getSession().setAttribute(AdventureKeys.CART,                                                    getCart(se.getSession()));    }        public void sessionDestroyed(HttpSessionEvent se) {        // initialize the adventure package  try {      getCart(se.getSession());  } catch (Exception e) {      // swallow the session listener exception for now  }    }        public Cart getCart(HttpSession session) {        Cart cart = (Cart)session.getAttribute(AdventureKeys.CART);        if (cart == null) {           try {                cart = (Cart)Beans.instantiate(this.getClass().getClassLoader(),                                                            "com.sun.j2ee.blueprints.consumerwebsite.Cart");                session.setAttribute(AdventureKeys.CART, cart);            } catch (Exception ex) {                ex.printStackTrace();                Debug.print("Error instanciating Cart object: " + ex);            }        }        return cart;    }        /**     *  Keep only one copy of the Catalog Facade around     *  in the context to provide optimized creation of DAOs for     *  accessing signon data.     */    public CatalogFacade getCatalogFacade (HttpSession session) {        ServletContext context = session.getServletContext();        CatalogFacade catalogFacade = null;        if (context.getAttribute(AdventureKeys.CATALOG_FACADE) != null) {            catalogFacade = (CatalogFacade)context.getAttribute(AdventureKeys.CATALOG_FACADE);        } else {            catalogFacade = new CatalogFacade();            context.setAttribute(AdventureKeys.CATALOG_FACADE, catalogFacade);        }        return catalogFacade;    }        /**     *  Keep only one copy of the SignOn Facade around     *  in the context to provide optimized creation of DAOs for     *  accessing signon data.     */    public SignOnFacade getSignOnFacade (HttpSession session) {        ServletContext context = session.getServletContext();        SignOnFacade signOnFacade = null;        if (context.getAttribute(AdventureKeys.SIGN_ON_FACADE) != null) {            signOnFacade = (SignOnFacade)context.getAttribute(AdventureKeys.SIGN_ON_FACADE);        } else {            signOnFacade = new SignOnFacade();            context.setAttribute(AdventureKeys.SIGN_ON_FACADE, signOnFacade);        }        return signOnFacade;    }        /**     *  Keep only one copy of the Customer Facade around     *  in the context to provide optimized creation of DAOs for     *  accessing customer data.     */    public CustomerFacade getCustomerFacade (HttpSession session) {        ServletContext context = session.getServletContext();        CustomerFacade CustomerFacade = null;        if (context.getAttribute(AdventureKeys.CUSTOMER_FACADE) != null) {            CustomerFacade = (CustomerFacade)context.getAttribute(AdventureKeys.CUSTOMER_FACADE);        } else {            CustomerFacade = new CustomerFacade();            context.setAttribute(AdventureKeys.CUSTOMER_FACADE, CustomerFacade);        }        return CustomerFacade;    }}