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1. Click Start, and then click Control Panel. 2. In the Control Panel window, click Network And Internet Connections. 3. In the Network And Internet Connections window, click Network Connections. 4. In the Network Connections window, click Create A New Connection. Windows XP Professional starts the New Connection Wizard. 5. On the Welcome To The New Connection Wizard page, click Next. The New Connection Wizard displays the Network Connection Type page. 6. Click Connect To The Network At My Workplace, and then click Next. The New Connection Wizard displays the Network Connection page. 7. Click Virtual Private Network Connection, and then click Next. The New Connection Wizard displays the Connection Name page. 8. In the Company Name text box, type Work, and then click Next. The New Connection Wizard displays the Public Network page. 9. Click Do Not Dial The Initial Connection, and then click Next. The New Connection Wizard displays the VPN Server Selection page. 10. In the Host Name Or IP Address text box, type 192.168.1.202, and then click Next.

Wireless networks are susceptible to many of the same faults as wired networks. Wireless computers use much of the same infrastructure, so DHCP, DNS, routing, and firewall problems can have the same effect as they would on wired systems. However, wireless networks are also subject to other types of problems that generally occur more frequently. Troubleshooters must be conscious of the types of issues that are most common for the platforms they re working on, so they don t waste time on areas that are unlikely to be the cause of the problem they are trying to resolve.

Note If your computer is on a network and there is a valid address that you can use to test your outbound connection, use that address instead of 192.168.1.202.

session.createCriteria(Item.class) .setFetchMode("bids", FetchMode.JOIN) .setFetchMode("seller", FetchMode.JOIN) .add( Restrictions.like("description", "%Foo%") );

The New Connection Wizard displays the Completing The New Connection Wizard page. 11. Review the information summary, and then click Finish. Windows XP Professional displays the Connect Work dialog box. 12. In the User Name text box, type Administrator and type password for the password.

Note If your computer is on a network and you entered a valid IP address in Step 8, enter a valid user name and password in Step 12.

Be careful, though. The same caveats as in HQL and JPA QL apply here: Eager fetching more than one collection in parallel (such as bids and images) results in an SQL Cartesian product that is probably slower than two separate queries. Limiting the resultset for pagination, if you use eager fetching for collections, is also done in-memory. However, dynamic fetching with Criteria and FetchMode is slightly different than in HQL and JPA QL: A Criteria query doesn t ignore the global fetching strategies as defined in the mapping metadata. For example, if the bids collection is mapped with fetch="join" or FetchType.EAGER, the following query results in an outer join of the ITEM and BID table:

Configuring Local Area Network (LAN) Connections 15-17

If your computer is a stand-alone computer, this operation will fail. If your computer is on a network and you entered a valid address in Step 8 and a valid user name and password in Step 11, a message will be displayed indicating that a connection has been made.

session.createCriteria(Item.class) .add( Restrictions.like("description", "%Foo%") );

14. If your connection failed, in the Error Connecting to Work dialog box, click Cancel. If you connected successfully to another computer, double-click the connection icon in the notification area, click Disconnect, and then click Yes. 15. Close all windows and log off.

Use the following questions to help determine whether you have learned enough to move on to the next lesson. If you have difficulty answering these questions, review the material in this lesson before beginning the next lesson. You can find answers to these questions in the Questions and Answers section at the end of this chapter. 1. What are the four outbound connection types that you can configure using the New Connection Wizard

The returned Item instances have their bids collections initialized and fully loaded. This doesn t happen with HQL or JPA QL unless you manually query with LEFT JOIN FETCH (or, of course, map the collection as lazy="false", which results in a second SQL query).

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15

edical students learn about hundreds of diseases, and it is typical for them to find the uncommon, peculiar ones to be more interesting than the familiar