RE: [Objectbridge-developers] LockStrategy

[Dixon-Peugh, D. <Dav...@tp...>]

Actually, the QuickMVC project has sort of fallen
by the wayside.  I still have some ideas, but I 
want to get Transactions into OJB first.

And as for the strategies, I think we actually have
RWRepeatableRead and RWUncommittedRead.  I think we
will get Phantom Rows no matter what.  (Until we 
rework the broker.)

David.


-----Original Message-----
From: Thomas Mahler [mailto:tho...@ho...]
Sent: Thursday, December 21, 2000 4:51 AM
To: Dixon-Peugh, David
Cc: 'obj...@li...'
Subject: Re: [Objectbridge-developers] LockStrategy


Hi David,

"Dixon-Peugh, David" wrote:
> 
> I have started some work on the Locking strategies.
> 
> There are now 4 different strategies, located in
> ojb.server.lockstrategy.  These are still pretty
> much in development for now.
> 
> Each one represents the 4 isolation levels as found here:
> http://www.tru64unix.compaq.com/data-access/doc/ODBC/Odbcref/rlock.htm

interesting reference!
> 
> The only ones I have any real faith in are:
>   RWUncommittedReadStrategy
>   RWSerializableStrategy

Same for me! I think the other two may fit well for RDBMS but not so
well for OO-programs.

> 
> (and even those I haven't quite convinced myself that they
> work.)
> 
> Integration of these into the application also hasn't happened.
> 
> I'll let you know when more gets done.
> 

David, what about your Quick-MVC project? Are you making progress?


I'm currently refactoring the Broker to use prepared statements. This
provides another performance boost because PS run much faster on most
RDBMS and the usage of Reflection for building statements can be
minimized.
Coding is finished, I'm doing final testing today and hope to get it
into CVS by tomorrow.

regards,

Thomas