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1 package org.springframework.samples.jpetstore.web.spring;
2
3 import java.util.HashMap  ;
4 import java.util.Map ;
5
6 import javax.servlet.http.HttpServletRequest ;
7 import javax.servlet.http.HttpServletResponse ;
8
9 import org.springframework.beans.support.PagedListHolder;
10 import org.springframework.samples.jpetstore.domain.Category;
11 import org.springframework.samples.jpetstore.domain.logic.PetStoreFacade;
12 import org.springframework.web.servlet.ModelAndView;
13 import org.springframework.web.servlet.mvc.Controller;
14
15
19 public class ViewCategoryController implements Controller {
20
21 private PetStoreFacade petStore;
22
23 public void setPetStore(PetStoreFacade petStore) {
24 this.petStore = petStore;
25 }
26
27 public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
28 Map model = new HashMap ();
29 String categoryId = request.getParameter("categoryId");
30 if (categoryId != null) {
31 Category category = this.petStore.getCategory(categoryId);
32 PagedListHolder productList = new PagedListHolder(this.petStore.getProductListByCategory(categoryId));
33 productList.setPageSize(4);
34 request.getSession().setAttribute("ViewProductAction_category", category);
35 request.getSession().setAttribute("ViewProductAction_productList", productList);
36 model.put("category", category);
37 model.put("productList", productList);
38 }
39 else {
40 Category category = (Category) request.getSession().getAttribute("ViewProductAction_category");
41 PagedListHolder productList = (PagedListHolder) request.getSession().getAttribute("ViewProductAction_productList");
42 if (category == null || productList == null) {
43 throw new IllegalStateException ("Cannot find pre-loaded category and product list");
44 }
45 String page = request.getParameter("page");
46 if ("next".equals(page)) {
47 productList.nextPage();
48 }
49 else if ("previous".equals(page)) {
50 productList.previousPage();
51 }
52 model.put("category", category);
53 model.put("productList", productList);
54 }
55 return new ModelAndView("Category", model);
56 }
57
58 }
59 |
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