I have been studying 10.2 version. Thanks for guidance
On 7/24/07, Kristian Waagan <[EMAIL PROTECTED]> wrote: > > anuj bhargava wrote: > > Hello > > I am Anuj and I am working on my final year project for which i need to > > understand internals of derby specially locking. I have gone through > > transaction and lock modules in derby. but i still didn't get it fully. > > Is there any way or tool to trace functioning of derby like when a > > transaction comes, which function is used to form query tree and then > > optimization , and then how it interacts with lock manager like what > > type of lock it gets, which function is used to release locks and then > > commit transaction, where updated values before and after updatation > > are stored if transaction is update one. > > Hello Anuj, > > I am not aware of any such specialized tools. My advice would be to > (continue) read the code and see if there are any papers/writeups that > can give you an overview. Then maybe use a debugger to step through a > simple transaction. You can then also change things in the setup, like > the isolation level. > > I do not know much about the parser or optimizer, but I do know the > plans are created as generated Java byte code. There is an option to > dump the generated class files so that you can look at them (after using > a decompiler?). > > > There might be useful information here; > http://db.apache.org/derby/integrate/index.html (look in the left column > under Papers). I recommend looking at Dans presentation from Colorado > 2004 (Software Summit). > > Sorry I can't help you more, but maybe someone else will add some > valuable input. I think many people on the list are in release or > vacation mode, so a little patience and a reminder might pay off :) > > > Just out of curiosity, which version of Derby have you been studying? > There has been some changes in the areas you are looking into. > > > > regards, > -- > Kristian > > > > > Thx in anticipation > > Anuj > > > >
