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1 package org.springframework.samples.jpetstore.web.struts;
2
3 import javax.servlet.http.HttpServletRequest  ;
4 import javax.servlet.http.HttpServletResponse ;
5
6 import org.apache.struts.action.ActionForm;
7 import org.apache.struts.action.ActionForward;
8 import org.apache.struts.action.ActionMapping;
9
10 import org.springframework.beans.support.PagedListHolder;
11 import org.springframework.samples.jpetstore.domain.Category;
12
13 public class ViewCategoryAction extends BaseAction {
14
15 public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
16 String categoryId = request.getParameter("categoryId");
17 if (categoryId != null) {
18 Category category = getPetStore().getCategory(categoryId);
19 PagedListHolder productList = new PagedListHolder(getPetStore().getProductListByCategory(categoryId));
20 productList.setPageSize(4);
21 request.getSession().setAttribute("ViewProductAction_category", category);
22 request.getSession().setAttribute("ViewProductAction_productList", productList);
23 request.setAttribute("category", category);
24 request.setAttribute("productList", productList);
25 }
26 else {
27 Category category = (Category) request.getSession().getAttribute("ViewProductAction_category");
28 PagedListHolder productList = (PagedListHolder) request.getSession().getAttribute("ViewProductAction_productList");
29 if (category == null || productList == null) {
30 throw new IllegalStateException ("Cannot find pre-loaded category and product list");
31 }
32 String page = request.getParameter("page");
33 if ("next".equals(page)) {
34 productList.nextPage();
35 }
36 else if ("previous".equals(page)) {
37 productList.previousPage();
38 }
39 request.setAttribute("category", category);
40 request.setAttribute("productList", productList);
41 }
42 return mapping.findForward("success");
43 }
44
45 }
46 |
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