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// Prepare DAOs ItemDAO itemDAO = new ItemDAOHibernate(); UserDAO userDAO = new UserDAOHibernate(); // Load requested Item Item item = itemDAO.findById(itemId, true); // Get maximum and minimum bids for this Item Bid currentMaxBid = itemDAO.getMaxBid(itemId); Bid currentMinBid = itemDAO.getMinBid(itemId); // Load bidder User bidder = userDAO.findById(userId, false); try { Bid newBid = item.placeBid(bidder, bidAmount, currentMaxBid, currentMinBid); ... ... // Place new Bid into request context // Forward to success page

1. 2. 3.

Windows XP Professional also supplies a tool named Group Policy Result Tool, which is a command-line utility that helps you determine which policies are actually applied to a computer. You can start this tool by typing Gpresult.exe at the command prompt. The results, shown in Figure 16-7, show the policies in effect on the computer. Use the command Gpresult.exe / to get information on other uses for this tool.

Figure 16-7

} catch (BusinessException e) { ... // Forward to appropriate error page } }

The following questions are intended to reinforce key information presented in this lesson. If you are unable to answer a question, review the lesson materials and try the question again. You can find answers to the questions in the Questions and Answers section at the end of this chapter. 1. ______________________ is used to control settings on computers in a workgroup environment. 2. When multiple GPOs and the LGPO affecting a computer are combined, in what order are the policies resolved

Overview of Security Policy 16-15

You almost manage to avoid any dependency of controller code on Hibernate, except for one thing: You still need to instantiate a specific DAO implementation in the controller. One (not very sophisticated) way to avoid this dependency is the traditional abstract factory pattern. First, create an abstract factory for data-access objects:

3. You would use the ______________________ tool to view the actual settings affecting a computer and the source of those settings.

Local Security Policy is applied to a specific computer and is the only type of security policy you can use on computers that are members of a workgroup. You manage Local Security Policy by using the Local Security Policy tool found in the Administrative Tools folder. Group Policy is applied to sites, domains, and OUs in an Active Directory environment, and affects all computers or users that are members of the container to which the Group Policy is assigned. When a computer running Windows XP Professional is affected by Local Security Policy and Group Policy, those policies are applied in the following order: a. The LGPO is processed first. b. GPOs linked to the site are processed. c. GPOs linked to the domain are processed. d. GPOs linked to the OU are processed.

public abstract class DAOFactory { /** * Factory method for instantiation of concrete factories. */

Windows XP Professional provides two tools that help you work with policies. The RSoP tool lets you view the actual settings in effect on a computer and the source GPO of those settings. The Group Policy Result tool is a command-line utility that shows you the GPOs affecting a computer.

16-16

public static DAOFactory instance(Class factory) { try { return (DAOFactory)factory.newInstance(); } catch (Exception ex) { throw new RuntimeException( "Couldn't create DAOFactory: " + factory ); } } // Add public public public public public public } your DAO abstract abstract abstract abstract abstract abstract interfaces here ItemDAO getItemDAO(); CategoryDAO getCategoryDAO(); CommentDAO getCommentDAO(); UserDAO getUserDAO(); BillingDetailsDAO getBillingDetailsDAO(); ShipmentDAO getShipmentDAO();

16

a. Incorrect: You can add cabinet (.cab) files to an offline image by using DISM.exe. B. Correct: You cannot add Microsoft System Installer (.msi) packages to an offline image

In 7, Setting Up and Managing User Accounts, you learned about assigning user account passwords and how to unlock an account that was locked by the system. In this lesson, you learn how to improve the security of your user s passwords and how to control when the system locks out a user account.

This abstract factory can build and return any DAO. Now implement this factory for your Hibernate DAOs: