June 2004
Intermediate to advanced
792 pages
23h 17m
English
Content preview from Enterprise JavaBeans, Fourth Edition
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Chapter 19. EJB Design in the Real World
EJB changed rapidly over the past couple of years. Best practices for using EJBs “in the real world” are only now beginning to be documented, and there are already entire books on how to use EJBs. We cannot hope to cover everything in a single chapter. However, we can hit the important topics in designing EJBs for use in real-world business applications.
This chapter covers:
The questions you need to ask about your EJB container and database selections
beforeyou begin designing your EJBs.A step-by-step how-to for designing EJBs from functional requirements to completed EJB design, including the identification of potential base classes and EJB-helper classes.
Alternatives to EJB. There are places where Enterprise JavaBeans are not the best choice. The last section in this chapter helps you identify those places and introduces some alternatives.
Pre-Design: Containers and Databases
Before you begin designing your application, it is essential that you consider the execution environment in which your code is run. The execution environment includes your:
| Hardware platform |
| Operating system |
| Java Virtual Machine (JVM) implementation |
| Application server (EJB container) |
| Database server |
Each of these elements has a direct effect on your application design’s success. We won’t talk about hardware and operating systems (about which you may have little choice, anyway), and we’ll stay away from arguments about who has a better JVM. We’ll focus on the last two issues; ...
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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.