I don't think including an MBean pre-packaged to do this is a good move. The primary key of a table should be fairly carefully picked, and providing a key generator is encouraging people to use inappropriate primary keys.
How about providing an MBean which has _facilities_ for PK generation, but which requires the developer to provide a delegate class to do the actual generation? So it deals with all the JMX stuff, exposes itself via RMI, has a standard interface for getting an Object PK, but doesn't do any generation, just takes the name of a class to use as a generator as a parameter, loads that and then delegates generation to it?
Just my $0.02
--
Tom Cook
Systems Development
Australian Submarine Corporation
Mersey Road
Outer Harbour
+61 8 8348 7645
"From the instant I picked your book up, until the moment I put it down, I was convulsed with laughter. I fully intend to read it one day."
- Groucho Marx
-----Original Message-----
From: Kimpton,C (Chris) [SMTP:[EMAIL PROTECTED]]
Sent: Monday, January 15, 2001 6:53 PM
To: 'jBoss'
Subject: RE: [jBoss-User] Searching for a PK Generator Bean
Hi,
> do you guys think we should ship it as an MBean?
> many people seem to think this is needed
As one of the many people, I give it a +1.
|
|Take a look at the following thread from
|www.theserverside.com, they have a link to a fully
|implemented open source PK generator following the
|HIGH / LOW pattern in EJB:
|http://theserverside.com/discussion/thread.jsp?thread_id=1995
|
|HIGH/LOW Pattern:
|http://www.sdmagazine.com/articles/1999/0012/0012p/0012p.htm?topic=uml
|
|I have not used it, but have been researching the same
|thing today and this is what I found...
|
Equally, I have not used it - but need a PK generator bean...
Chris
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