April 2003
Intermediate to advanced
750 pages
16h 53m
English
book
EJB 2.0 Development with WebSphere Studio Application Developer
by Ueli Wahli, Wouter Denayer, Lars Schunk, Deborah Shaddon, Martin Weiss
Content preview from EJB 2.0 Development with WebSphere Studio Application Developer
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EJB inheritance
Defining an enterprise bean as a subclass of another enterprise bean is not part of the Enterprise JavaBeans specification. However, in real-life applications, we need this essential feature of object-oriented programming. Direct inheritance is specific to WebSphere Application Server and Studio Application Developer.
Application Developer provides different mapping approaches for an inheritance hierarchy: a single table approach, and a root/leaf approach with foreign key related tables.
In addition, entity beans can inherit from regular Java classes.
Note
The support for EJB inheritance in the IBM tools is not new, and has been around since VisualAge for Java Version 3. EJB 2.0 still does not provide formal support for EJB inheritance, ...
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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.