Examples of org.springframework.beans.support.PagedListHolder

Package org.springframework.beans.support

Examples of org.springframework.beans.support.PagedListHolder

org.springframework.beans.support.PagedListHolder
PagedListHolder is a simple state holder for handling lists of objects, separating them into pages. Page numbering starts with 0.
This is mainly targetted at usage in web UIs. Typically, an instance will be instantiated with a list of beans, put into the session, and exported as model. The properties can all be set/get programmatically, but the most common way will be data binding, i.e. populating the bean from request parameters. The getters will mainly be used by the view.
Supports sorting the underlying list via a {@link SortDefinition} implementation,available as property "sort". By default, a {@link MutableSortDefinition} instancewill be used, toggling the ascending value on setting the same property again.
The data binding names have to be called "pageSize" and "sort.ascending", as expected by BeanWrapper. Note that the names and the nesting syntax match the respective JSTL EL expressions, like "myModelAttr.pageSize" and "myModelAttr.sort.ascending". @author Juergen Hoeller @since 19.05.2003 @see #getPageList() @see org.springframework.beans.support.MutableSortDefinition

    if (account == null) {
      return new ModelAndView("Error", "message", "Invalid username or password.  Signon failed.");
    }
    else {
      UserSession userSession = new UserSession(account);
      PagedListHolder myList = new PagedListHolder(this.petStore.getProductListByCategory(account.getFavouriteCategoryId()));
      myList.setPageSize(4);
      userSession.setMyList(myList);
      request.getSession().setAttribute("userSession", userSession);
      String forwardAction = request.getParameter("forwardAction");
      if (forwardAction != null) {
        response.sendRedirect(forwardAction);

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    String keyword = request.getParameter("keyword");
    if (keyword != null) {
      if (!StringUtils.hasLength(keyword)) {
        return new ModelAndView("Error", "message", "Please enter a keyword to search for, then press the search button.");
      }
      PagedListHolder productList = new PagedListHolder(this.petStore.searchProductList(keyword.toLowerCase()));
      productList.setPageSize(4);
      request.getSession().setAttribute("SearchProductsController_productList", productList);
      return new ModelAndView("SearchProducts", "productList", productList);
    }
    else {
      String page = request.getParameter("page");
      PagedListHolder productList = (PagedListHolder) request.getSession().getAttribute("SearchProductsController_productList");
      if (productList == null) {
        return new ModelAndView("Error", "message", "Your session has timed out. Please start over again.");
      }
      if ("next".equals(page)) {
        productList.nextPage();
      }
      else if ("previous".equals(page)) {
        productList.previousPage();
      }
      return new ModelAndView("SearchProducts", "productList", productList);
    }
  }

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  public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
    Map model = new HashMap();
    String categoryId = request.getParameter("categoryId");
    if (categoryId != null) {
      Category category = this.petStore.getCategory(categoryId);
      PagedListHolder productList = new PagedListHolder(this.petStore.getProductListByCategory(categoryId));
      productList.setPageSize(4);
      request.getSession().setAttribute("ViewProductAction_category", category);
      request.getSession().setAttribute("ViewProductAction_productList", productList);
      model.put("category", category);
      model.put("productList", productList);
    }
    else {
      Category category = (Category) request.getSession().getAttribute("ViewProductAction_category");
      PagedListHolder productList = (PagedListHolder) request.getSession().getAttribute("ViewProductAction_productList");
      if (category == null || productList == null) {
        throw new IllegalStateException("Cannot find pre-loaded category and product list");
      }
      String page = request.getParameter("page");
      if ("next".equals(page)) {
        productList.nextPage();
      }
      else if ("previous".equals(page)) {
        productList.previousPage();
      }
      model.put("category", category);
      model.put("productList", productList);
    }
    return new ModelAndView("Category", model);

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  public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
    Map model = new HashMap();
    String productId = request.getParameter("productId");
    if (productId != null) {
      PagedListHolder itemList = new PagedListHolder(this.petStore.getItemListByProduct(productId));
      itemList.setPageSize(4);
      Product product = this.petStore.getProduct(productId);
      request.getSession().setAttribute("ViewProductAction_itemList", itemList);
      request.getSession().setAttribute("ViewProductAction_product", product);
      model.put("itemList", itemList);
      model.put("product", product);
    }
    else {
      PagedListHolder itemList = (PagedListHolder) request.getSession().getAttribute("ViewProductAction_itemList");
      Product product = (Product) request.getSession().getAttribute("ViewProductAction_product");
      String page = request.getParameter("page");
      if ("next".equals(page)) {
        itemList.nextPage();
      }
      else if ("previous".equals(page)) {
        itemList.previousPage();
      }
      model.put("itemList", itemList);
      model.put("product", product);
    }
    return new ModelAndView("Product", model);

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          "User ID already exists: choose a different ID.");
      return showForm(request, response, errors);
    }
    
    UserSession userSession = new UserSession(this.petStore.getAccount(accountForm.getAccount().getUsername()));
    PagedListHolder myList = new PagedListHolder(
        this.petStore.getProductListByCategory(accountForm.getAccount().getFavouriteCategoryId()));
    myList.setPageSize(4);
    userSession.setMyList(myList);
    request.getSession().setAttribute("userSession", userSession);
    return super.onSubmit(request, response, command, errors);
  }

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    if (keyword != null) {
      if (!StringUtils.hasLength(keyword)) {
        request.setAttribute("message", "Please enter a keyword to search for, then press the search button.");
        return mapping.findForward("failure");
      }
      PagedListHolder productList = new PagedListHolder(getPetStore().searchProductList(keyword.toLowerCase()));
      productList.setPageSize(4);
      request.getSession().setAttribute("SearchProductsAction_productList", productList);
      request.setAttribute("productList", productList);
      return mapping.findForward("success");
    }
    else {
      String page = request.getParameter("page");
      PagedListHolder productList = (PagedListHolder) request.getSession().getAttribute("SearchProductsAction_productList");
      if (productList == null) {
        request.setAttribute("message", "Your session has timed out. Please start over again.");
        return mapping.findForward("failure");
      }
      if ("next".equals(page)) {
        productList.nextPage();
      }
      else if ("previous".equals(page)) {
        productList.previousPage();
      }
      request.setAttribute("productList", productList);
      return mapping.findForward("success");
    }
  }

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        String forwardAction = acctForm.getForwardAction();
        acctForm = new AccountActionForm();
        acctForm.setForwardAction(forwardAction);
        acctForm.setAccount(account);
        acctForm.getAccount().setPassword(null);
        PagedListHolder myList = new PagedListHolder(getPetStore().getProductListByCategory(account.getFavouriteCategoryId()));
        myList.setPageSize(4);
        acctForm.setMyList(myList);
        request.getSession().setAttribute("accountForm", acctForm);
        if (acctForm.getForwardAction() == null || acctForm.getForwardAction().length() < 1) {
          return mapping.findForward("success");
        }

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  public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
    String categoryId = request.getParameter("categoryId");
    if (categoryId != null) {
      Category category = getPetStore().getCategory(categoryId);
      PagedListHolder productList = new PagedListHolder(getPetStore().getProductListByCategory(categoryId));
      productList.setPageSize(4);
      request.getSession().setAttribute("ViewProductAction_category", category);
      request.getSession().setAttribute("ViewProductAction_productList", productList);
      request.setAttribute("category", category);
      request.setAttribute("productList", productList);
    }
    else {
      Category category = (Category) request.getSession().getAttribute("ViewProductAction_category");
      PagedListHolder productList = (PagedListHolder) request.getSession().getAttribute("ViewProductAction_productList");
      if (category == null || productList == null) {
        throw new IllegalStateException("Cannot find pre-loaded category and product list");
      }
      String page = request.getParameter("page");
      if ("next".equals(page)) {
        productList.nextPage();
      }
      else if ("previous".equals(page)) {
        productList.previousPage();
      }
      request.setAttribute("category", category);
      request.setAttribute("productList", productList);
    }
    return mapping.findForward("success");

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public class ViewProductAction extends BaseAction {


  public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
    String productId = request.getParameter("productId");
    if (productId != null) {
      PagedListHolder itemList = new PagedListHolder(getPetStore().getItemListByProduct(productId));
      itemList.setPageSize(4);
      Product product = getPetStore().getProduct(productId);
      request.getSession().setAttribute("ViewProductAction_itemList", itemList);
      request.getSession().setAttribute("ViewProductAction_product", product);
      request.setAttribute("itemList", itemList);
      request.setAttribute("product", product);
    }
    else {
      PagedListHolder itemList = (PagedListHolder) request.getSession().getAttribute("ViewProductAction_itemList");
      Product product = (Product) request.getSession().getAttribute("ViewProductAction_product");
      String page = request.getParameter("page");
      if ("next".equals(page)) {
        itemList.nextPage();
      }
      else if ("previous".equals(page)) {
        itemList.previousPage();
      }
      request.setAttribute("itemList", itemList);
      request.setAttribute("product", product);
    }
    return mapping.findForward("success");

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      acctForm.getAccount().setListOption(request.getParameter("account.listOption") != null);
      acctForm.getAccount().setBannerOption(request.getParameter("account.bannerOption") != null);
      Account account = acctForm.getAccount();
      getPetStore().updateAccount(account);
      acctForm.setAccount(getPetStore().getAccount(account.getUsername()));
      PagedListHolder myList = new PagedListHolder(getPetStore().getProductListByCategory(account.getFavouriteCategoryId()));
      myList.setPageSize(4);
      acctForm.setMyList(myList);
      request.getSession().setAttribute("accountForm", acctForm);
      request.getSession().removeAttribute("workingAccountForm");
      return mapping.findForward("success");
    }

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Related Classes of org.springframework.beans.support.PagedListHolder

org.springframework.samples.jpetstore.web.spring.AccountFormController

org.springframework.samples.jpetstore.web.spring.SearchProductsController

org.springframework.samples.jpetstore.web.spring.SignonController

org.springframework.samples.jpetstore.web.spring.ViewCategoryController

org.springframework.samples.jpetstore.web.spring.ViewProductController

org.springframework.samples.jpetstore.web.struts.EditAccountAction

org.springframework.samples.jpetstore.web.struts.NewAccountAction

org.springframework.samples.jpetstore.web.struts.SearchProductsAction

org.springframework.samples.jpetstore.web.struts.SignonAction

org.springframework.samples.jpetstore.web.struts.ViewCategoryAction

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