Win a copy of Machine Learning Systems: Designs that scale this week in the Scala forum
or Xamarin in Action: Creating native cross-platform mobile apps in the Android forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic

The Advantages of the Java EE 5 Platform  RSS feed

 
Ranch Hand
Posts: 70
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I was just reading an article on sun:

http://java.sun.com/developer/technicalArticles/Interviews/shannon_qa.html

if basically java ee 5 is doing away with deployment descriptors and putting in annotations.. wouldn't we be losing out on one of the major advantages of using deployment descriptors? for instance, with a deployment descriptor we can make changes and redeploy the app without recompiling or even touching the source code! but since they plan to use annotations to replace deployment descriptors, any modifications to the annotations would need us to recompile the source again right? or is my concept of annotations wrong? i'm unclear about this (annotations) feature of java 5.
 
Ranch Hand
Posts: 45
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
EJB 3.0 (JEE5) allows you to configure most application settings via annotations. But EJB 3.0 also supports XML files for overriding default annotation values and configuring external resources such as database connections. So, I guess it's all a matter of choice depending on the type of metadata: for metadata that is coupled to the classes, use annotations i.e. O/R annotations. For application-level metadata i.e AOP metadata, or DB metadata, use deployment descriptors.

Still, I guess building apps on JEE5 is not as flexible as doing so on Spring, especially when it comes to configuration choices.

/M

[ April 01, 2006: Message edited by: Manuel Palacio ]
[ April 01, 2006: Message edited by: Manuel Palacio ]
 
author
Ranch Hand
Posts: 288
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I agree with manuel and Spring is more flexible. Easier to unit test as well.
 
We've gotta get close enough to that helmet to pull the choke on it's engine and flood his mind! Or, we could just read this tiny ad:
Rocket Oven Kickstarter - from the trailboss
https://coderanch.com/t/695773/Rocket-Oven-Kickstarter-trailboss
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!