|Subject||Re: Non-numeric primary key|
> > The latter because I could used a uuid generator within my EJBAfter much testing and posting and feedbacks, I have decided to go
> > (http://www.activescript.co.uk/jguid.html) to get a (almost)
> Personally I have created an entity bean that manages groups of key.
> implementation details in the "EJB Design Patterns" book from
> TheServerSide.com (it is available for download there).
down the sequence blocks route (since it appears to be database
neutral, unlike auto increment, and being numeric is faster/easier to
index). My sequence blocks works on Long's so I am hoping that by the
time the system runs out of numbers I will be long gone (both
physically and metaphorically).
I implemented the code as suggested in the book (as above) which is
based on a submission by Jonathan Weedon from Borland Corporation.
Since the implementation was for WebLogic, there seems to be much more
granularity for setting the transaction isolation on a per entity
basis in WebLogic.
With Firebird on JBoss, I understand that the transaction isolation is
set on the firebird-ds.xml file (which is placed in the deploy
directory for the JBoss server, in my case it is default).
I found this, commented out, in that file
<!--additional properties. only use one way of setting tx
If I were to set TransactionIsolationName to TRANSACTION_SERIALIZABLE
would that apply to all entity beans for my deployment?
Also, what is the default locking behaviour in Firebird,
optimistic/pessimistic etc (any links on documentation pertaining to
this would be appreciated).