September 2001
Intermediate to advanced
592 pages
18h 22m
English
Content preview from Enterprise JavaBeans, Third Edition
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Fitting the Pieces Together
To illustrate how a J2EE platform would be used, imagine using a J2EE server in Titan’s reservation system. To build this system, we would use the TravelAgent, Cabin, ProcessPayment, Customer, and other enterprise beans we defined in this book, along with web components that would provide an HTML interface.
The web components would access the enterprise beans in the same way that any Java client would, by using the enterprise beans’ remote and home interfaces. The web components would generate HTML to represent the reservation system.
Figure 17-5 shows a web page generated by a servlet or JSP page for the Titan reservation system. This web page was generated by web components on the J2EE server. At this point, the person using the reservation system has been guided through a login page, a customer selection page, and a cruise selection page and is about to choose an available cabin for the reservation.
Figure 17-5. HTML interface to the Titan reservation system
The list of available cabins was obtained from the TravelAgent EJB,
whose listAvailableCabins() method was invoked by the servlet that generated the web page. The list of cabins was used to create an HTML list box in a web page that was loaded into the user’s browser. When the user chooses a cabin and submits the selection, an HTTP request is sent to the J2EE server. The J2EE server receives the request ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.