cartcheckoutaction.java

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/*
 * @author                        : Neelesh
 * @Version                       : 1.0
 *
 * Development Environment        : Oracle9i JDeveloper
 * Name of the File               : CartCheckoutAction.java
 * Creation/Modification History  :
 *
 * Neelesh   14-Jan-2003      Created
 *
 */
package oracle.otnsamples.vsm.actions.mall;


// Servlet and IP API
import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import oracle.otnsamples.util.MessageCache;
import oracle.otnsamples.vsm.actions.forms.ShippingAddressForm;
import oracle.otnsamples.vsm.services.ServiceException;
import oracle.otnsamples.vsm.services.ShoppingCart;
import oracle.otnsamples.vsm.services.data.Address;

import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;


/**
 * This Action class checks out the cart after updating the shipping address.
 * The action also indicates any errors that may have occured during checkout.
 * If the checkout action is successful, the cart bean is removed from the
 * session.
 *
 * @author Neelesh
 * @version 1.0
 */
public class CartCheckoutAction extends HomePageAction {
  /**
   * This is the action called from the Struts framework to update the shipping
   * address and checkout cart address for the current user so that the user
   * can change it if needed.
   *
   * @param <b>mapping</b> The ActionMapping used to select this instance.
   * @param <b>form</b> The optional ActionForm bean for this request.
   * @param <b>request</b> The HTTP Request we are processing.
   * @param <b>response</b> The HTTP Response we are processing.
   *
   * @return <b>ActionForward</b> - details of control forward.
   *
   * @throws <b>IOException</b>
   * @throws <b>ServletException</b>
   */
  public ActionForward execute(
                               ActionMapping mapping, ActionForm form,
                               HttpServletRequest request,
                               HttpServletResponse response)
                               throws IOException, ServletException {

    ShippingAddressForm addressForm = (ShippingAddressForm) form;
    ActionErrors errors             = new ActionErrors();

    if(request.getSession().getAttribute("_cart") != null) {
       ShoppingCart cart =
       (ShoppingCart) request.getSession().getAttribute("_cart");
      try {
        // update shipping address
        Address address = new Address();
        address.setAddress(addressForm.getAddress());
        address.setCity(addressForm.getCity());
        address.setCountry(addressForm.getCountry());
        address.setPhone(addressForm.getPhone());
        address.setState(addressForm.getState());
        address.setZip(addressForm.getZipAsInteger());
        cart.changeShippingAddress(address);

        // check out
        String errorMessage = cart.checkout();

        if(errorMessage != null) {
          errors.add(
                     "CheckoutError",
                     new ActionError("error.cart.outofstock", errorMessage));
          saveErrors(request, errors);
        } else {

          //remove the cart 
          ActionMessages messages = new ActionMessages();
          messages.add(
                       "CheckoutSuccess",
                       new ActionMessage("cart.checkout.success"));
          saveMessages(request, messages);
          cart.remove();
          request.getSession().removeAttribute("_cart");
        }
      } catch(ServiceException ex) {
         // handle errors
         servlet.log("CheckoutError", ex);
         errors.add(
                   "CheckoutError",
                   new ActionError(
                                   "error.displaycart",
                                   MessageCache.getMessage(
                                                           ex.getMessageCode(),
                                                           getLocale(request))));
        saveErrors(request, errors);
      } catch(Exception ex) {
        servlet.log("CheckoutError", ex);
        errors.add("CheckoutError", new ActionError("error.displaycart"));
        saveErrors(request, errors);
      }
    }

    // call super class method to set navigation related data
    super.execute(mapping, form, request, response);

    return mapping.findForward("success");
  }
}