Support Forums: Message List - EJB 3 callbacks: Feedback wanted http://www.theserverside.com Most recent forum messages en Jive Forums Silver 5.5.30 (www.jivesoftware.com) Tue, 18 Jun 2013 00:55:18 -0400 Are annotations "not breakable"? http://www.theserverside.com/discussions/thread.tss?thread_id=27958
I'm still an annotations novice... maybe somebody answer this for me...Can you enforce that an annotation can only be applied to a method with a *specific* signature? Can you prevent 2 of the same annotations being applied to...]]> Thu, 12 Aug 2004 14:05:38 -0400 Thu, 12 Aug 2004 14:05:38 -0400 Thu, 12 Aug 2004 14:05:38 -0400 Aug 12, 2004 Kyle Marvin 0 EJB 3 callbacks: Feedback wanted http://www.theserverside.com/discussions/thread.tss?thread_id=27958 ..but "one method per interface" would be stupid..
I don't see why it is stupid? Some interfaces have no methods at all(Serializable) and are very handy. If the four or so callback methods are truely separate concepts...]]> Thu, 12 Aug 2004 12:54:36 -0400 Thu, 12 Aug 2004 12:54:36 -0400 Thu, 12 Aug 2004 12:54:36 -0400 Aug 12, 2004 George Coller 0 EJB 3 callbacks: Feedback wanted http://www.theserverside.com/discussions/thread.tss?thread_id=27958 Im surprised Bill, Cameron and Gavin haven't posted to this Thread. Guys what are your thought on this?They'd prefer magic methods and annotations, but are afraid to say so. ;-)

SCNR,
Lars]]> Thu, 12 Aug 2004 07:34:38 -0400 Thu, 12 Aug 2004 07:34:38 -0400 Thu, 12 Aug 2004 07:34:38 -0400 Aug 12, 2004 Lars Stitz 0 EJB 3 callbacks: Feedback wanted http://www.theserverside.com/discussions/thread.tss?thread_id=27958 Thu, 12 Aug 2004 06:34:10 -0400 Thu, 12 Aug 2004 06:34:10 -0400 Thu, 12 Aug 2004 06:34:10 -0400 Aug 12, 2004 Smythe 1 EJB 3 callbacks: Feedback wanted http://www.theserverside.com/discussions/thread.tss?thread_id=27958 Thu, 12 Aug 2004 00:47:38 -0400 Thu, 12 Aug 2004 00:47:38 -0400 Thu, 12 Aug 2004 00:47:38 -0400 Aug 12, 2004 Paul Strack 1 EJB 3 callbacks: Feedback wanted http://www.theserverside.com/discussions/thread.tss?thread_id=27958
#1: is a flawed contract. would you trust in developers? I won't. In some hidden place of our pride, we are still...]]> Wed, 11 Aug 2004 15:50:35 -0400 Wed, 11 Aug 2004 15:50:35 -0400 Wed, 11 Aug 2004 15:50:35 -0400 Aug 11, 2004 Fernando Racca 2 Interfaces are easy http://www.theserverside.com/discussions/thread.tss?thread_id=27958
One idea I haven't seen would be to keep the current 2.x aggregated callback interface but change it to extend from new individual callback interfaces so a developer...]]> Wed, 11 Aug 2004 12:50:50 -0400 Wed, 11 Aug 2004 12:50:50 -0400 Wed, 11 Aug 2004 12:50:50 -0400 Aug 11, 2004 George Coller 0 James Gosling Decision Is Getting Old http://www.theserverside.com/discussions/thread.tss?thread_id=27958
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Our conclusion was that bound method references are unnecessary and detrimental to the language. This decision was made in consultation with Borland International, who had...]]> Wed, 11 Aug 2004 12:00:18 -0400 Wed, 11 Aug 2004 12:00:18 -0400 Wed, 11 Aug 2004 12:00:18 -0400 Aug 11, 2004 Mehul Patel 0 EJB 3 callbacks: Feedback wanted http://www.theserverside.com/discussions/thread.tss?thread_id=27958
Magic callbacks just sound dangerous:(

The drawbacks of option 2 are clearly and cleanly address by having a base class. In fact, I having been using such base classes and they work quite...]]> Wed, 11 Aug 2004 10:24:30 -0400 Wed, 11 Aug 2004 10:24:30 -0400 Wed, 11 Aug 2004 10:24:30 -0400 Aug 11, 2004 Prakash Malani 0 Are annotations &quot;not breakable&quot;? http://www.theserverside.com/discussions/thread.tss?thread_id=27958 I'm still an annotations novice... maybe somebody answer this for me...Can you enforce that an annotation can only be applied to a method with a *specific* signature? Can you prevent 2 of the same annotations being applied to different...]]> Wed, 11 Aug 2004 09:53:30 -0400 Wed, 11 Aug 2004 09:53:30 -0400 Wed, 11 Aug 2004 09:53:30 -0400 Aug 11, 2004 aXe ! 1 One way or the other... http://www.theserverside.com/discussions/thread.tss?thread_id=27958 Wed, 11 Aug 2004 09:48:46 -0400 Wed, 11 Aug 2004 09:48:46 -0400 Wed, 11 Aug 2004 09:48:46 -0400 Aug 11, 2004 tchadwick 0 EJB 3 callbacks: Feedback wanted http://www.theserverside.com/discussions/thread.tss?thread_id=27958
I've written a fair number of EJB's and I can't remember all that many times that I have needed to put something in the callback. Normally I've just had a bunch of empty methods sitting at the bottom of my bean file. Putting stuff in the...]]> Wed, 11 Aug 2004 08:00:58 -0400 Wed, 11 Aug 2004 08:00:58 -0400 Wed, 11 Aug 2004 08:00:58 -0400 Aug 11, 2004 carl marais 0 No Magic Please, We're British http://www.theserverside.com/discussions/thread.tss?thread_id=27958 No Magic Methods, Please!

I wonder where this idea ever came from. Horrible.

So,

1) Magic methods
No, no, NO! Nooooooooo!

2) Interface
It works, it's pure, it's beautiful. You...]]> Wed, 11 Aug 2004 07:07:40 -0400 Wed, 11 Aug 2004 07:07:40 -0400 Wed, 11 Aug 2004 07:07:40 -0400 Aug 11, 2004 Janne Haarni 0 EJB 3 callbacks: Feedback wanted http://www.theserverside.com/discussions/thread.tss?thread_id=27958 This is well explained in "Beyond Object-Oriented Programming"and very briefly resumed here http://www.cs.kuleuven.ac.be/~eddy/Szyperski.htmlSo what...]]> Wed, 11 Aug 2004 06:23:20 -0400 Wed, 11 Aug 2004 06:23:20 -0400 Wed, 11 Aug 2004 06:23:20 -0400 Aug 11, 2004 Juozas Baliuka 0 EJB 3 callbacks: Feedback wanted http://www.theserverside.com/discussions/thread.tss?thread_id=27958 BTW this kind of callback exists in JTA, it is TranastionSynchronization, Statefull bean can be a transaction listener. EntityManager can register callbacks too, it...]]> Wed, 11 Aug 2004 06:17:39 -0400 Wed, 11 Aug 2004 06:17:39 -0400 Wed, 11 Aug 2004 06:17:39 -0400 Aug 11, 2004 Juozas Baliuka 0