Any takers for this?
I just want to validate my code - that I'll be posting with an online article. I hope that way this question will not need to answered again and again. I know it has been answered earlier, but the mail achieves do not take it to conclusion.
Thanks in advance,
Harshal
Harshal D <[EMAIL PROTECTED]> wrote:
Hi,
While trying to decide a strategy for use of CASTOR in a heavily concurrent web app, I referred to the mail thread at: http://www.mail-archive.com/[EMAIL PROTECTED]/msg10198.html
Here Bruce says:
�Let's say that you have a threaded client that kicks off, say, ten> SR>threads that all use Castor, each of which grabs a Database object and> SR>each begins a transaction. Castor does not keep track of who is using> SR>what Database object so when one of the threads (clients) commits its> SR>transaction, Castor just commits the closest open transaction. This� SR>may or may not be the correct transaction to commit.�
The part that is confusing to me � �Castor does not keep track of who is using what Database object�Does this mean if 10 separate programs all use the same JDO instance but call getDatabse() and perform totally un related work � will still face the same problem? That is CASTOR will not know which database object to commit & close ? Even if �database object� is a local variable ?Can any one! please comment ?In my case I have a singleton that ensures there is only one JDO instance.
My client code looks like:
{
// The JDOObject is sort of a factory that returns the only JDO //instance. Every client gets a separate databse object
mySQLDB= JDOObject.getDatabase();
//Now I start the TXN
mySQLDB.begin();
// query and get results � do updates
mySQLDB.commit();
mySQLDB.close();
}
I am using STRUTS and this code appears in one Action class. I can synchronize the entire piece of code inside the braces ( �{�). But this exact similar code will be there in other Action classes. They may be querying updating different tables all together. If CASTOR just closes the �closest open transaction� � how will this affect?
THANKS A LOT for your help .
Do you Yahoo!?
Yahoo! Platinum - Watch CBS' NCAA March Madness, live on your desktop!
Do you Yahoo!?
Yahoo! Platinum - Watch CBS' NCAA March Madness, live on your desktop!
