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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Read-only methods
If you check the Console view, you can see test messages from the persister class. From this output you can see that even a get method invokes both the loadState and the storeState method of the persister class, and therefore the table is updated for every method.
For CMP entity beans, the container is smart enough to update the table only when the data has been modified.
For BMP entity beans, we have to implement this ourselves.
Making the BMP entity bean smarter
Because we implement the persistent logic, we have to add the code to make the BMP entity bean smarter and not update the table unnecessarily.
We add a dirty field that is set whenever the bean data is updated. In the ejbStore method, we then check the dirty flag ...
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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.